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From plusplusjia...@apache.org
Subject [27/50] [abbrv] directory-kerby git commit: DIRKRB-382 Promote kerby-config and kerby-util as top level modules, getting rid of lib
Date Thu, 30 Jul 2015 06:24:34 GMT
http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/Base64.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/Base64.java b/kerby-util/src/main/java/org/apache/kerby/util/Base64.java
new file mode 100644
index 0000000..143c8cc
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/Base64.java
@@ -0,0 +1,1048 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kerby.util;
+
+import java.math.BigInteger;
+
+/**
+ * Provides Base64 encoding and decoding as defined by RFC 2045.
+ *
+ * <p>
+ * This class implements section <cite>6.8. Base64 Content-Transfer-Encoding</cite> from RFC 2045 <cite>Multipurpose
+ * Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies</cite> by Freed and Borenstein.
+ * </p>
+ * <p>
+ * The class can be parameterized in the following manner with various constructors:
+ * <ul>
+ * <li>URL-safe mode: Default off.</li>
+ * <li>Line length: Default 76. Line length that aren't multiples of 4 will still essentially end up being multiples of
+ * 4 in the encoded data.
+ * <li>Line separator: Default is CRLF ("\r\n")</li>
+ * </ul>
+ * </p>
+ * <p>
+ * Since this class operates directly on byte streams, and not character streams, it is hard-coded to only encode/decode
+ * character encodings which are compatible with the lower 127 ASCII chart (ISO-8859-1, Windows-1252, UTF-8, etc).
+ * </p>
+ *
+ * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a>
+ * @author Apache Software Foundation
+ * @since 1.0
+ * @version $Id: Base64.java 155 2009-09-17 21:00:58Z julius $
+ */
+public class Base64 {
+    private static final int DEFAULT_BUFFER_RESIZE_FACTOR = 2;
+
+    private static final int DEFAULT_BUFFER_SIZE = 8192;
+
+    /**
+     * Chunk size per RFC 2045 section 6.8.
+     *
+     * <p>
+     * The {@value} character limit does not count the trailing CRLF, but counts all other characters, including any
+     * equal signs.
+     * </p>
+     *
+     * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045 section 6.8</a>
+     */
+    static final int CHUNK_SIZE = 76;
+
+    /**
+     * Chunk separator per RFC 2045 section 2.1.
+     *
+     * <p>
+     * N.B. The next major release may break compatibility and make this field private.
+     * </p>
+     *
+     * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045 section 2.1</a>
+     */
+    static final byte[] CHUNK_SEPARATOR = {'\r', '\n'};
+
+    /**
+     * This array is a lookup table that translates 6-bit positive integer index values into their "Base64 Alphabet"
+     * equivalents as specified in Table 1 of RFC 2045.
+     *
+     * Thanks to "commons" project in ws.apache.org for this code.
+     * http://svn.apache.org/repos/asf/webservices/commons/trunk/modules/util/
+     */
+    private static final byte[] STANDARD_ENCODE_TABLE = {
+            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+            'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+            'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+            'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
+    };
+
+    /**
+     * This is a copy of the STANDARD_ENCODE_TABLE above, but with + and /
+     * changed to - and _ to make the encoded Base64 results more URL-SAFE.
+     * This table is only used when the Base64's mode is set to URL-SAFE.
+     */
+    private static final byte[] URL_SAFE_ENCODE_TABLE = {
+            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+            'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+            'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+            'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '_'
+    };
+
+    /**
+     * Byte used to pad output.
+     */
+    private static final byte PAD = '=';
+
+    /**
+     * This array is a lookup table that translates Unicode characters drawn from the "Base64 Alphabet" (as specified in
+     * Table 1 of RFC 2045) into their 6-bit positive integer equivalents. Characters that are not in the Base64
+     * alphabet but fall within the bounds of the array are translated to -1.
+     *
+     * Note: '+' and '-' both decode to 62. '/' and '_' both decode to 63. This means decoder seamlessly handles both
+     * URL_SAFE and STANDARD base64. (The encoder, on the other hand, needs to know ahead of time what to emit).
+     *
+     * Thanks to "commons" project in ws.apache.org for this code.
+     * http://svn.apache.org/repos/asf/webservices/commons/trunk/modules/util/
+     */
+    private static final byte[] DECODE_TABLE = {
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, 52, 53, 54,
+            55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4,
+            5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+            24, 25, -1, -1, -1, -1, 63, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+            35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+    };
+
+    /** Mask used to extract 6 bits, used when encoding */
+    private static final int MASK_6BITS = 0x3f;
+
+    /** Mask used to extract 8 bits, used in decoding base64 bytes */
+    private static final int MASK_8BITS = 0xff;
+
+    // The static final fields above are used for the original static byte[] methods on Base64.
+    // The private member fields below are used with the new streaming approach, which requires
+    // some state be preserved between calls of encode() and decode().
+
+    /**
+     * Encode table to use: either STANDARD or URL_SAFE. Note: the DECODE_TABLE above remains static because it is able
+     * to decode both STANDARD and URL_SAFE streams, but the encodeTable must be a member variable so we can switch
+     * between the two modes.
+     */
+    private final byte[] encodeTable;
+
+    /**
+     * Line length for encoding. Not used when decoding. A value of zero or less implies no chunking of the base64
+     * encoded data.
+     */
+    private final int lineLength;
+
+    /**
+     * Line separator for encoding. Not used when decoding. Only used if lineLength > 0.
+     */
+    private final byte[] lineSeparator;
+
+    /**
+     * Convenience variable to help us determine when our buffer is going to run out of room and needs resizing.
+     * <code>decodeSize = 3 + lineSeparator.length;</code>
+     */
+    private final int decodeSize;
+
+    /**
+     * Convenience variable to help us determine when our buffer is going to run out of room and needs resizing.
+     * <code>encodeSize = 4 + lineSeparator.length;</code>
+     */
+    private final int encodeSize;
+
+    /**
+     * Buffer for streaming.
+     */
+    private byte[] buffer;
+
+    /**
+     * Position where next character should be written in the buffer.
+     */
+    private int pos;
+
+    /**
+     * Position where next character should be read from the buffer.
+     */
+    private int readPos;
+
+    /**
+     * Variable tracks how many characters have been written to the current line. Only used when encoding. We use it to
+     * make sure each encoded line never goes beyond lineLength (if lineLength > 0).
+     */
+    private int currentLinePos;
+
+    /**
+     * Writes to the buffer only occur after every 3 reads when encoding, an every 4 reads when decoding. This variable
+     * helps track that.
+     */
+    private int modulus;
+
+    /**
+     * Boolean flag to indicate the EOF has been reached. Once EOF has been reached, this Base64 object becomes useless,
+     * and must be thrown away.
+     */
+    private boolean eof;
+
+    /**
+     * Place holder for the 3 bytes we're dealing with for our base64 logic. Bitwise operations store and extract the
+     * base64 encoding or decoding from this variable.
+     */
+    private int x;
+
+    /**
+     * Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.
+     * <p>
+     * When encoding the line length is 76, the line separator is CRLF, and the encoding table is STANDARD_ENCODE_TABLE.
+     * </p>
+     *
+     * <p>
+     * When decoding all variants are supported.
+     * </p>
+     */
+    public Base64() {
+        this(false);
+    }
+
+    /**
+     * Creates a Base64 codec used for decoding (all modes) and encoding in the given URL-safe mode.
+     * <p>
+     * When encoding the line length is 76, the line separator is CRLF, and the encoding table is STANDARD_ENCODE_TABLE.
+     * </p>
+     *
+     * <p>
+     * When decoding all variants are supported.
+     * </p>
+     *
+     * @param urlSafe
+     *            if <code>true</code>, URL-safe encoding is used. In most cases this should be set to
+     *            <code>false</code>.
+     * @since 1.4
+     */
+    public Base64(boolean urlSafe) {
+        this(CHUNK_SIZE, CHUNK_SEPARATOR, urlSafe);
+    }
+
+    /**
+     * Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.
+     * <p>
+     * When encoding the line length is given in the constructor, the line separator is CRLF, and the encoding table is
+     * STANDARD_ENCODE_TABLE.
+     * </p>
+     * <p>
+     * Line lengths that aren't multiples of 4 will still essentially end up being multiples of 4 in the encoded data.
+     * </p>
+     * <p>
+     * When decoding all variants are supported.
+     * </p>
+     *
+     * @param lineLength
+     *            Each line of encoded data will be at most of the given length (rounded down to nearest multiple of 4).
+     *            If lineLength <= 0, then the output will not be divided into lines (chunks). Ignored when decoding.
+     * @since 1.4
+     */
+    public Base64(int lineLength) {
+        this(lineLength, CHUNK_SEPARATOR);
+    }
+
+    /**
+     * Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.
+     * <p>
+     * When encoding the line length and line separator are given in the constructor, and the encoding table is
+     * STANDARD_ENCODE_TABLE.
+     * </p>
+     * <p>
+     * Line lengths that aren't multiples of 4 will still essentially end up being multiples of 4 in the encoded data.
+     * </p>
+     * <p>
+     * When decoding all variants are supported.
+     * </p>
+     *
+     * @param lineLength
+     *            Each line of encoded data will be at most of the given length (rounded down to nearest multiple of 4).
+     *            If lineLength <= 0, then the output will not be divided into lines (chunks). Ignored when decoding.
+     * @param lineSeparator
+     *            Each line of encoded data will end with this sequence of bytes.
+     * @throws IllegalArgumentException
+     *             Thrown when the provided lineSeparator included some base64 characters.
+     * @since 1.4
+     */
+    public Base64(int lineLength, byte[] lineSeparator) {
+        this(lineLength, lineSeparator, false);
+    }
+
+    /**
+     * Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.
+     * <p>
+     * When encoding the line length and line separator are given in the constructor, and the encoding table is
+     * STANDARD_ENCODE_TABLE.
+     * </p>
+     * <p>
+     * Line lengths that aren't multiples of 4 will still essentially end up being multiples of 4 in the encoded data.
+     * </p>
+     * <p>
+     * When decoding all variants are supported.
+     * </p>
+     *
+     * @param lineLength
+     *            Each line of encoded data will be at most of the given length (rounded down to nearest multiple of 4).
+     *            If lineLength <= 0, then the output will not be divided into lines (chunks). Ignored when decoding.
+     * @param lineSeparator
+     *            Each line of encoded data will end with this sequence of bytes.
+     * @param urlSafe
+     *            Instead of emitting '+' and '/' we emit '-' and '_' respectively. urlSafe is only applied to encode
+     *            operations. Decoding seamlessly handles both modes.
+     * @throws IllegalArgumentException
+     *             The provided lineSeparator included some base64 characters. That's not going to work!
+     * @since 1.4
+     */
+    public Base64(int lineLength, byte[] lineSeparator, boolean urlSafe) {
+        if (lineSeparator == null) {
+            lineLength = 0;  // disable chunk-separating
+            lineSeparator = CHUNK_SEPARATOR;  // this just gets ignored
+        }
+        this.lineLength = lineLength > 0 ? (lineLength / 4) * 4 : 0;
+        this.lineSeparator = new byte[lineSeparator.length];
+        System.arraycopy(lineSeparator, 0, this.lineSeparator, 0, lineSeparator.length);
+        if (lineLength > 0) {
+            this.encodeSize = 4 + lineSeparator.length;
+        } else {
+            this.encodeSize = 4;
+        }
+        this.decodeSize = this.encodeSize - 1;
+        if (containsBase64Byte(lineSeparator)) {
+            String sep = Utf8.toString(lineSeparator);
+            throw new IllegalArgumentException("lineSeperator must not contain base64 characters: [" + sep + "]");
+        }
+        this.encodeTable = urlSafe ? URL_SAFE_ENCODE_TABLE : STANDARD_ENCODE_TABLE;
+    }
+
+    /**
+     * Returns our current encode mode. True if we're URL-SAFE, false otherwise.
+     *
+     * @return true if we're in URL-SAFE mode, false otherwise.
+     * @since 1.4
+     */
+    public boolean isUrlSafe() {
+        return this.encodeTable == URL_SAFE_ENCODE_TABLE;
+    }
+
+    /**
+     * Returns true if this Base64 object has buffered data for reading.
+     *
+     * @return true if there is Base64 object still available for reading.
+     */
+    boolean hasData() {
+        return this.buffer != null;
+    }
+
+    /**
+     * Returns the amount of buffered data available for reading.
+     *
+     * @return The amount of buffered data available for reading.
+     */
+    int avail() {
+        return buffer != null ? pos - readPos : 0;
+    }
+
+    /** Doubles our buffer. */
+    private void resizeBuffer() {
+        if (buffer == null) {
+            buffer = new byte[DEFAULT_BUFFER_SIZE];
+            pos = 0;
+            readPos = 0;
+        } else {
+            byte[] b = new byte[buffer.length * DEFAULT_BUFFER_RESIZE_FACTOR];
+            System.arraycopy(buffer, 0, b, 0, buffer.length);
+            buffer = b;
+        }
+    }
+
+    /**
+     * Extracts buffered data into the provided byte[] array, starting at position bPos, up to a maximum of bAvail
+     * bytes. Returns how many bytes were actually extracted.
+     *
+     * @param b
+     *            byte[] array to extract the buffered data into.
+     * @param bPos
+     *            position in byte[] array to start extraction at.
+     * @param bAvail
+     *            amount of bytes we're allowed to extract. We may extract fewer (if fewer are available).
+     * @return The number of bytes successfully extracted into the provided byte[] array.
+     */
+    int readResults(byte[] b, int bPos, int bAvail) {
+        if (buffer != null) {
+            int len = Math.min(avail(), bAvail);
+            if (buffer != b) {
+                System.arraycopy(buffer, readPos, b, bPos, len);
+                readPos += len;
+                if (readPos >= pos) {
+                    buffer = null;
+                }
+            } else {
+                // Re-using the original consumer's output array is only
+                // allowed for one round.
+                buffer = null;
+            }
+            return len;
+        }
+        return eof ? -1 : 0;
+    }
+
+    /**
+     * Sets the streaming buffer. This is a small optimization where we try to buffer directly to the consumer's output
+     * array for one round (if the consumer calls this method first) instead of starting our own buffer.
+     *
+     * @param out
+     *            byte[] array to buffer directly to.
+     * @param outPos
+     *            Position to start buffering into.
+     * @param outAvail
+     *            Amount of bytes available for direct buffering.
+     */
+    void setInitialBuffer(byte[] out, int outPos, int outAvail) {
+        // We can re-use consumer's original output array under
+        // special circumstances, saving on some System.arraycopy().
+        if (out != null && out.length == outAvail) {
+            buffer = out;
+            pos = outPos;
+            readPos = outPos;
+        }
+    }
+
+    /**
+     * <p>
+     * Encodes all of the provided data, starting at inPos, for inAvail bytes. Must be called at least twice: once with
+     * the data to encode, and once with inAvail set to "-1" to alert encoder that EOF has been reached, so flush last
+     * remaining bytes (if not multiple of 3).
+     * </p>
+     * <p>
+     * Thanks to "commons" project in ws.apache.org for the bitwise operations, and general approach.
+     * http://svn.apache.org/repos/asf/webservices/commons/trunk/modules/util/
+     * </p>
+     *
+     * @param in
+     *            byte[] array of binary data to base64 encode.
+     * @param inPos
+     *            Position to start reading data from.
+     * @param inAvail
+     *            Amount of bytes available from input for encoding.
+     */
+    void encode(byte[] in, int inPos, int inAvail) {
+        if (eof) {
+            return;
+        }
+        // inAvail < 0 is how we're informed of EOF in the underlying data we're
+        // encoding.
+        if (inAvail < 0) {
+            eof = true;
+            if (buffer == null || buffer.length - pos < encodeSize) {
+                resizeBuffer();
+            }
+            switch (modulus) {
+                case 1 :
+                    buffer[pos++] = encodeTable[(x >> 2) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[(x << 4) & MASK_6BITS];
+                    // URL-SAFE skips the padding to further reduce size.
+                    if (encodeTable == STANDARD_ENCODE_TABLE) {
+                        buffer[pos++] = PAD;
+                        buffer[pos++] = PAD;
+                    }
+                    break;
+
+                case 2 :
+                    buffer[pos++] = encodeTable[(x >> 10) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[(x >> 4) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[(x << 2) & MASK_6BITS];
+                    // URL-SAFE skips the padding to further reduce size.
+                    if (encodeTable == STANDARD_ENCODE_TABLE) {
+                        buffer[pos++] = PAD;
+                    }
+                    break;
+                default:
+                    break;
+            }
+            if (lineLength > 0 && pos > 0) {
+                System.arraycopy(lineSeparator, 0, buffer, pos, lineSeparator.length);
+                pos += lineSeparator.length;
+            }
+        } else {
+            for (int i = 0; i < inAvail; i++) {
+                if (buffer == null || buffer.length - pos < encodeSize) {
+                    resizeBuffer();
+                }
+                modulus = (++modulus) % 3;
+                int b = in[inPos++];
+                if (b < 0) {
+                    b += 256;
+                }
+                x = (x << 8) + b;
+                if (0 == modulus) {
+                    buffer[pos++] = encodeTable[(x >> 18) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[(x >> 12) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[(x >> 6) & MASK_6BITS];
+                    buffer[pos++] = encodeTable[x & MASK_6BITS];
+                    currentLinePos += 4;
+                    if (lineLength > 0 && lineLength <= currentLinePos) {
+                        System.arraycopy(lineSeparator, 0, buffer, pos, lineSeparator.length);
+                        pos += lineSeparator.length;
+                        currentLinePos = 0;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * <p>
+     * Decodes all of the provided data, starting at inPos, for inAvail bytes. Should be called at least twice: once
+     * with the data to decode, and once with inAvail set to "-1" to alert decoder that EOF has been reached. The "-1"
+     * call is not necessary when decoding, but it doesn't hurt, either.
+     * </p>
+     * <p>
+     * Ignores all non-base64 characters. This is how chunked (e.g. 76 character) data is handled, since CR and LF are
+     * silently ignored, but has implications for other bytes, too. This method subscribes to the garbage-in,
+     * garbage-out philosophy: it will not check the provided data for validity.
+     * </p>
+     * <p>
+     * Thanks to "commons" project in ws.apache.org for the bitwise operations, and general approach.
+     * http://svn.apache.org/repos/asf/webservices/commons/trunk/modules/util/
+     * </p>
+     *
+     * @param in
+     *            byte[] array of ascii data to base64 decode.
+     * @param inPos
+     *            Position to start reading data from.
+     * @param inAvail
+     *            Amount of bytes available from input for encoding.
+     */
+    void decode(byte[] in, int inPos, int inAvail) {
+        if (eof) {
+            return;
+        }
+        if (inAvail < 0) {
+            eof = true;
+        }
+        for (int i = 0; i < inAvail; i++) {
+            if (buffer == null || buffer.length - pos < decodeSize) {
+                resizeBuffer();
+            }
+            byte b = in[inPos++];
+            if (b == PAD) {
+                // We're done.
+                eof = true;
+                break;
+            } else {
+                if (b >= 0 && b < DECODE_TABLE.length) {
+                    int result = DECODE_TABLE[b];
+                    if (result >= 0) {
+                        modulus = (++modulus) % 4;
+                        x = (x << 6) + result;
+                        if (modulus == 0) {
+                            buffer[pos++] = (byte) ((x >> 16) & MASK_8BITS);
+                            buffer[pos++] = (byte) ((x >> 8) & MASK_8BITS);
+                            buffer[pos++] = (byte) (x & MASK_8BITS);
+                        }
+                    }
+                }
+            }
+        }
+
+        // Two forms of EOF as far as base64 decoder is concerned: actual
+        // EOF (-1) and first time '=' character is encountered in stream.
+        // This approach makes the '=' padding characters completely optional.
+        if (eof && modulus != 0) {
+            x = x << 6;
+            switch (modulus) {
+                case 2 :
+                    x = x << 6;
+                    buffer[pos++] = (byte) ((x >> 16) & MASK_8BITS);
+                    break;
+                case 3 :
+                    buffer[pos++] = (byte) ((x >> 16) & MASK_8BITS);
+                    buffer[pos++] = (byte) ((x >> 8) & MASK_8BITS);
+                    break;
+                default :
+                    break;
+            }
+        }
+    }
+
+    /**
+     * Returns whether or not the <code>octet</code> is in the base 64 alphabet.
+     *
+     * @param octet
+     *            The value to test
+     * @return <code>true</code> if the value is defined in the the base 64 alphabet, <code>false</code> otherwise.
+     * @since 1.4
+     */
+    public static boolean isBase64(byte octet) {
+        return octet == PAD || octet >= 0 && octet < DECODE_TABLE.length && DECODE_TABLE[octet] != -1;
+    }
+
+    /**
+     * Tests a given byte array to see if it contains only valid characters within the Base64 alphabet. Currently the
+     * method treats whitespace as valid.
+     *
+     * @param arrayOctet
+     *            byte array to test
+     * @return <code>true</code> if all bytes are valid characters in the Base64 alphabet or if the byte array is empty;
+     *         false, otherwise
+     */
+    public static boolean isArrayByteBase64(byte[] arrayOctet) {
+        for (int i = 0; i < arrayOctet.length; i++) {
+            if (!isBase64(arrayOctet[i]) && !isWhiteSpace(arrayOctet[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Tests a given byte array to see if it contains only valid characters within the Base64 alphabet.
+     *
+     * @param arrayOctet
+     *            byte array to test
+     * @return <code>true</code> if any byte is a valid character in the Base64 alphabet; false herwise
+     */
+    private static boolean containsBase64Byte(byte[] arrayOctet) {
+        for (int i = 0; i < arrayOctet.length; i++) {
+            if (isBase64(arrayOctet[i])) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm but does not chunk the output.
+     *
+     * @param binaryData
+     *            binary data to encode
+     * @return byte[] containing Base64 characters in their UTF-8 representation.
+     */
+    public static byte[] encodeBase64(byte[] binaryData) {
+        return encodeBase64(binaryData, false);
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm into 76 character blocks separated by CRLF.
+     *
+     * @param binaryData
+     *            binary data to encode
+     * @return String containing Base64 characters.
+     * @since 1.4
+     */
+    public static String encodeBase64String(byte[] binaryData) {
+        return Utf8.toString(encodeBase64(binaryData, true));
+    }
+
+    /**
+     * Encodes binary data using a URL-safe variation of the base64 algorithm but does not chunk the output. The
+     * url-safe variation emits - and _ instead of + and / characters.
+     *
+     * @param binaryData
+     *            binary data to encode
+     * @return byte[] containing Base64 characters in their UTF-8 representation.
+     * @since 1.4
+     */
+    public static byte[] encodeBase64URLSafe(byte[] binaryData) {
+        return encodeBase64(binaryData, false, true);
+    }
+
+    /**
+     * Encodes binary data using a URL-safe variation of the base64 algorithm but does not chunk the output. The
+     * url-safe variation emits - and _ instead of + and / characters.
+     *
+     * @param binaryData
+     *            binary data to encode
+     * @return String containing Base64 characters
+     * @since 1.4
+     */
+    public static String encodeBase64URLSafeString(byte[] binaryData) {
+        return Utf8.toString(encodeBase64(binaryData, false, true));
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm and chunks the encoded output into 76 character blocks
+     *
+     * @param binaryData
+     *            binary data to encode
+     * @return Base64 characters chunked in 76 character blocks
+     */
+    public static byte[] encodeBase64Chunked(byte[] binaryData) {
+        return encodeBase64(binaryData, true);
+    }
+
+    /**
+     * Decodes an Object using the base64 algorithm. This method is provided in order to satisfy the requirements of the
+     * Decoder interface, and will throw a DecoderException if the supplied object is not of type byte[] or String.
+     *
+     * @param pObject
+     *            Object to decode
+     * @return An object (of type byte[]) containing the binary data which corresponds to the byte[] or String supplied.
+     */
+    public Object decode(Object pObject) {
+        if (pObject instanceof byte[]) {
+            return decode((byte[]) pObject);
+        } else if (pObject instanceof String) {
+            return decode((String) pObject);
+        } else {
+            throw new IllegalArgumentException("Parameter supplied to Base64 decode is not a byte[] or a String");
+        }
+    }
+
+    /**
+     * Decodes a String containing containing characters in the Base64 alphabet.
+     *
+     * @param pArray
+     *            A String containing Base64 character data
+     * @return a byte array containing binary data
+     * @since 1.4
+     */
+    public byte[] decode(String pArray) {
+        return decode(Utf8.toBytes(pArray));
+    }
+
+    /**
+     * Decodes a byte[] containing containing characters in the Base64 alphabet.
+     *
+     * @param pArray
+     *            A byte array containing Base64 character data
+     * @return a byte array containing binary data
+     */
+    public byte[] decode(byte[] pArray) {
+        reset();
+        if (pArray == null || pArray.length == 0) {
+            return pArray;
+        }
+        long len = (pArray.length * 3) / 4;
+        byte[] buf = new byte[(int) len];
+        setInitialBuffer(buf, 0, buf.length);
+        decode(pArray, 0, pArray.length);
+        decode(pArray, 0, -1); // Notify decoder of EOF.
+
+        // Would be nice to just return buf (like we sometimes do in the encode
+        // logic), but we have no idea what the line-length was (could even be
+        // variable).  So we cannot determine ahead of time exactly how big an
+        // array is necessary.  Hence the need to construct a 2nd byte array to
+        // hold the final result:
+
+        byte[] result = new byte[pos];
+        readResults(result, 0, result.length);
+        return result;
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.
+     *
+     * @param binaryData
+     *            Array containing binary data to encode.
+     * @param isChunked
+     *            if <code>true</code> this encoder will chunk the base64 output into 76 character blocks
+     * @return Base64-encoded data.
+     * @throws IllegalArgumentException
+     *             Thrown when the input array needs an output array bigger than {@link Integer#MAX_VALUE}
+     */
+    public static byte[] encodeBase64(byte[] binaryData, boolean isChunked) {
+        return encodeBase64(binaryData, isChunked, false);
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.
+     *
+     * @param binaryData
+     *            Array containing binary data to encode.
+     * @param isChunked
+     *            if <code>true</code> this encoder will chunk the base64 output into 76 character blocks
+     * @param urlSafe
+     *            if <code>true</code> this encoder will emit - and _ instead of the usual + and / characters.
+     * @return Base64-encoded data.
+     * @throws IllegalArgumentException
+     *             Thrown when the input array needs an output array bigger than {@link Integer#MAX_VALUE}
+     * @since 1.4
+     */
+    public static byte[] encodeBase64(byte[] binaryData, boolean isChunked, boolean urlSafe) {
+        return encodeBase64(binaryData, isChunked, urlSafe, Integer.MAX_VALUE);
+    }
+
+    /**
+     * Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.
+     *
+     * @param binaryData
+     *            Array containing binary data to encode.
+     * @param isChunked
+     *            if <code>true</code> this encoder will chunk the base64 output into 76 character blocks
+     * @param urlSafe
+     *            if <code>true</code> this encoder will emit - and _ instead of the usual + and / characters.
+     * @param maxResultSize
+     *            The maximum result size to accept.
+     * @return Base64-encoded data.
+     * @throws IllegalArgumentException
+     *             Thrown when the input array needs an output array bigger than maxResultSize
+     * @since 1.4
+     */
+    public static byte[] encodeBase64(byte[] binaryData, boolean isChunked, boolean urlSafe, int maxResultSize) {
+        if (binaryData == null || binaryData.length == 0) {
+            return binaryData;
+        }
+
+        long len = getEncodeLength(binaryData, CHUNK_SIZE, CHUNK_SEPARATOR);
+        if (len > maxResultSize) {
+            throw new IllegalArgumentException("Input array too big, the output array would be bigger ("
+                    + len + ") than the specified maxium size of " + maxResultSize);
+        }
+
+        Base64 b64 = isChunked ? new Base64(urlSafe) : new Base64(0, CHUNK_SEPARATOR, urlSafe);
+        return b64.encode(binaryData);
+    }
+
+    /**
+     * Decodes a Base64 String into octets
+     *
+     * @param base64String
+     *            String containing Base64 data
+     * @return Array containing decoded data.
+     * @since 1.4
+     */
+    public static byte[] decodeBase64(String base64String) {
+        return new Base64().decode(base64String);
+    }
+
+    /**
+     * Decodes Base64 data into octets
+     *
+     * @param base64Data
+     *            Byte array containing Base64 data
+     * @return Array containing decoded data.
+     */
+    public static byte[] decodeBase64(byte[] base64Data) {
+        return new Base64().decode(base64Data);
+    }
+
+    /**
+     * Discards any whitespace from a base-64 encoded block.
+     *
+     * @param data
+     *            The base-64 encoded data to discard the whitespace from.
+     * @return The data, less whitespace (see RFC 2045).
+     * @deprecated This method is no longer needed
+     */
+    static byte[] discardWhitespace(byte[] data) {
+        byte[] groomedData = new byte[data.length];
+        int bytesCopied = 0;
+        for (int i = 0; i < data.length; i++) {
+            switch (data[i]) {
+                case ' ' :
+                case '\n' :
+                case '\r' :
+                case '\t' :
+                    break;
+                default :
+                    groomedData[bytesCopied++] = data[i];
+            }
+        }
+        byte[] packedData = new byte[bytesCopied];
+        System.arraycopy(groomedData, 0, packedData, 0, bytesCopied);
+        return packedData;
+    }
+
+    /**
+     * Checks if a byte value is whitespace or not.
+     *
+     * @param byteToCheck
+     *            the byte to check
+     * @return true if byte is whitespace, false otherwise
+     */
+    private static boolean isWhiteSpace(byte byteToCheck) {
+        switch (byteToCheck) {
+            case ' ' :
+            case '\n' :
+            case '\r' :
+            case '\t' :
+                return true;
+            default :
+                return false;
+        }
+    }
+
+    // Implementation of the Encoder Interface
+
+    /**
+     * Encodes an Object using the base64 algorithm. This method is provided in order to satisfy the requirements of the
+     * Encoder interface, and will throw an EncoderException if the supplied object is not of type byte[].
+     *
+     * @param pObject
+     *            Object to encode
+     * @return An object (of type byte[]) containing the base64 encoded data which corresponds to the byte[] supplied.
+     */
+    public Object encode(Object pObject) {
+        if (!(pObject instanceof byte[])) {
+            throw new IllegalArgumentException("Parameter supplied to Base64 encode is not a byte[]");
+        }
+        return encode((byte[]) pObject);
+    }
+
+    /**
+     * Encodes a byte[] containing binary data, into a String containing characters in the Base64 alphabet.
+     *
+     * @param pArray
+     *            a byte array containing binary data
+     * @return A String containing only Base64 character data
+     * @since 1.4
+     */
+    public String encodeToString(byte[] pArray) {
+        return Utf8.toString(encode(pArray));
+    }
+
+    /**
+     * Encodes a byte[] containing binary data, into a byte[] containing characters in the Base64 alphabet.
+     *
+     * @param pArray
+     *            a byte array containing binary data
+     * @return A byte array containing only Base64 character data
+     */
+    public byte[] encode(byte[] pArray) {
+        reset();
+        if (pArray == null || pArray.length == 0) {
+            return pArray;
+        }
+        long len = getEncodeLength(pArray, lineLength, lineSeparator);
+        byte[] buf = new byte[(int) len];
+        setInitialBuffer(buf, 0, buf.length);
+        encode(pArray, 0, pArray.length);
+        encode(pArray, 0, -1); // Notify encoder of EOF.
+        // Encoder might have resized, even though it was unnecessary.
+        if (buffer != buf) {
+            readResults(buf, 0, buf.length);
+        }
+        // In URL-SAFE mode we skip the padding characters, so sometimes our
+        // final length is a bit smaller.
+        if (isUrlSafe() && pos < buf.length) {
+            byte[] smallerBuf = new byte[pos];
+            System.arraycopy(buf, 0, smallerBuf, 0, pos);
+            buf = smallerBuf;
+        }
+        return buf;
+    }
+
+    /**
+     * Pre-calculates the amount of space needed to base64-encode the supplied array.
+     *
+     * @param pArray byte[] array which will later be encoded
+     * @param chunkSize line-length of the output (<= 0 means no chunking) between each
+     *        chunkSeparator (e.g. CRLF).
+     * @param chunkSeparator the sequence of bytes used to separate chunks of output (e.g. CRLF).
+     *
+     * @return amount of space needed to encoded the supplied array.  Returns
+     *         a long since a max-len array will require Integer.MAX_VALUE + 33%.
+     */
+    private static long getEncodeLength(byte[] pArray, int chunkSize, byte[] chunkSeparator) {
+        // base64 always encodes to multiples of 4.
+        chunkSize = (chunkSize / 4) * 4;
+
+        long len = (pArray.length * 4) / 3;
+        long mod = len % 4;
+        if (mod != 0) {
+            len += 4 - mod;
+        }
+        if (chunkSize > 0) {
+            boolean lenChunksPerfectly = len % chunkSize == 0;
+            len += (len / chunkSize) * chunkSeparator.length;
+            if (!lenChunksPerfectly) {
+                len += chunkSeparator.length;
+            }
+        }
+        return len;
+    }
+
+    // Implementation of integer encoding used for crypto
+    /**
+     * Decodes a byte64-encoded integer according to crypto standards such as W3C's XML-Signature
+     *
+     * @param pArray
+     *            a byte array containing base64 character data
+     * @return A BigInteger
+     * @since 1.4
+     */
+    public static BigInteger decodeInteger(byte[] pArray) {
+        return new BigInteger(1, decodeBase64(pArray));
+    }
+
+    /**
+     * Encodes to a byte64-encoded integer according to crypto standards such as W3C's XML-Signature
+     *
+     * @param bigInt
+     *            a BigInteger
+     * @return A byte array containing base64 character data
+     * @throws NullPointerException
+     *             if null is passed in
+     * @since 1.4
+     */
+    public static byte[] encodeInteger(BigInteger bigInt) {
+        if (bigInt == null) {
+            throw new NullPointerException("encodeInteger called with null parameter");
+        }
+        return encodeBase64(toIntegerBytes(bigInt), false);
+    }
+
+    /**
+     * Returns a byte-array representation of a <code>BigInteger</code> without sign bit.
+     *
+     * @param bigInt
+     *            <code>BigInteger</code> to be converted
+     * @return a byte array representation of the BigInteger parameter
+     */
+    static byte[] toIntegerBytes(BigInteger bigInt) {
+        int bitlen = bigInt.bitLength();
+        // round bitlen
+        bitlen = ((bitlen + 7) >> 3) << 3;
+        byte[] bigBytes = bigInt.toByteArray();
+
+        if (bigInt.bitLength() % 8 != 0 && (bigInt.bitLength() / 8 + 1) == bitlen / 8) {
+            return bigBytes;
+        }
+        // set up params for copying everything but sign bit
+        int startSrc = 0;
+        int len = bigBytes.length;
+
+        // if bigInt is exactly byte-aligned, just skip signbit in copy
+        if (bigInt.bitLength() % 8 == 0) {
+            startSrc = 1;
+            len--;
+        }
+        int startDst = bitlen / 8 - len; // to pad w/ nulls as per spec
+        byte[] resizedBytes = new byte[bitlen / 8];
+        System.arraycopy(bigBytes, startSrc, resizedBytes, startDst, len);
+        return resizedBytes;
+    }
+
+    /**
+     * Resets this Base64 object to its initial newly constructed state.
+     */
+    private void reset() {
+        buffer = null;
+        pos = 0;
+        readPos = 0;
+        currentLinePos = 0;
+        modulus = 0;
+        eof = false;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/Base64InputStream.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/Base64InputStream.java b/kerby-util/src/main/java/org/apache/kerby/util/Base64InputStream.java
new file mode 100644
index 0000000..52bab54
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/Base64InputStream.java
@@ -0,0 +1,174 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kerby.util;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Provides Base64 encoding and decoding in a streaming fashion (unlimited size). When encoding the default lineLength
+ * is 76 characters and the default lineEnding is CRLF, but these can be overridden by using the appropriate
+ * constructor.
+ * <p>
+ * The default behaviour of the Base64InputStream is to DECODE, whereas the default behaviour of the Base64OutputStream
+ * is to ENCODE, but this behaviour can be overridden by using a different constructor.
+ * </p>
+ * <p>
+ * This class implements section <cite>6.8. Base64 Content-Transfer-Encoding</cite> from RFC 2045 <cite>Multipurpose
+ * Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies</cite> by Freed and Borenstein.
+ * </p>
+ * <p>
+ * Since this class operates directly on byte streams, and not character streams, it is hard-coded to only encode/decode
+ * character encodings which are compatible with the lower 127 ASCII chart (ISO-8859-1, Windows-1252, UTF-8, etc).
+ * </p>
+ *
+ * @author Apache Software Foundation
+ * @version $Id: Base64InputStream.java 155 2009-09-17 21:00:58Z julius $
+ * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a>
+ * @since 1.4
+ */
+public class Base64InputStream extends FilterInputStream {
+
+    private final boolean doEncode;
+
+    private final Base64 base64;
+
+    private final byte[] singleByte = new byte[1];
+
+    /**
+     * Creates a Base64InputStream such that all data read is Base64-decoded from the original provided InputStream.
+     *
+     * @param in
+     *            InputStream to wrap.
+     */
+    public Base64InputStream(InputStream in) {
+        this(in, false);
+    }
+
+    /**
+     * Creates a Base64InputStream such that all data read is either Base64-encoded or Base64-decoded from the original
+     * provided InputStream.
+     *
+     * @param in
+     *            InputStream to wrap.
+     * @param doEncode
+     *            true if we should encode all data read from us, false if we should decode.
+     */
+    public Base64InputStream(InputStream in, boolean doEncode) {
+        super(in);
+        this.doEncode = doEncode;
+        this.base64 = new Base64();
+    }
+
+    /**
+     * Creates a Base64InputStream such that all data read is either Base64-encoded or Base64-decoded from the original
+     * provided InputStream.
+     *
+     * @param in
+     *            InputStream to wrap.
+     * @param doEncode
+     *            true if we should encode all data read from us, false if we should decode.
+     * @param lineLength
+     *            If doEncode is true, each line of encoded data will contain lineLength characters (rounded down to
+     *            nearest multiple of 4). If lineLength <=0, the encoded data is not divided into lines. If doEncode is
+     *            false, lineLength is ignored.
+     * @param lineSeparator
+     *            If doEncode is true, each line of encoded data will be terminated with this byte sequence (e.g. \r\n).
+     *            If lineLength <= 0, the lineSeparator is not used. If doEncode is false lineSeparator is ignored.
+     */
+    public Base64InputStream(InputStream in, boolean doEncode, int lineLength, byte[] lineSeparator) {
+        super(in);
+        this.doEncode = doEncode;
+        this.base64 = new Base64(lineLength, lineSeparator);
+    }
+
+    /**
+     * Reads one <code>byte</code> from this input stream.
+     *
+     * @return the byte as an integer in the range 0 to 255. Returns -1 if EOF has been reached.
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     */
+    public int read() throws IOException {
+        int r = read(singleByte, 0, 1);
+        while (r == 0) {
+            r = read(singleByte, 0, 1);
+        }
+        if (r > 0) {
+            return singleByte[0] < 0 ? 256 + singleByte[0] : singleByte[0];
+        }
+        return -1;
+    }
+
+    /**
+     * Attempts to read <code>len</code> bytes into the specified <code>b</code> array starting at <code>offset</code>
+     * from this InputStream.
+     *
+     * @param b
+     *            destination byte array
+     * @param offset
+     *            where to start writing the bytes
+     * @param len
+     *            maximum number of bytes to read
+     *
+     * @return number of bytes read
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     * @throws NullPointerException
+     *             if the byte array parameter is null
+     * @throws IndexOutOfBoundsException
+     *             if offset, len or buffer size are invalid
+     */
+    public int read(byte[] b, int offset, int len) throws IOException {
+        if (b == null) {
+            throw new NullPointerException();
+        } else if (offset < 0 || len < 0) {
+            throw new IndexOutOfBoundsException();
+        } else if (offset > b.length || offset + len > b.length) {
+            throw new IndexOutOfBoundsException();
+        } else if (len == 0) {
+            return 0;
+        } else {
+            if (!base64.hasData()) {
+                byte[] buf = new byte[doEncode ? 4096 : 8192];
+                int c = in.read(buf);
+                // A little optimization to avoid System.arraycopy()
+                // when possible.
+                if (c > 0 && b.length == len) {
+                    base64.setInitialBuffer(b, offset, len);
+                }
+                if (doEncode) {
+                    base64.encode(buf, 0, c);
+                } else {
+                    base64.decode(buf, 0, c);
+                }
+            }
+            return base64.readResults(b, offset, len);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @return false
+     */
+    public boolean markSupported() {
+        return false; // not an easy job to support marks
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/Base64OutputStream.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/Base64OutputStream.java b/kerby-util/src/main/java/org/apache/kerby/util/Base64OutputStream.java
new file mode 100644
index 0000000..b2e09ba
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/Base64OutputStream.java
@@ -0,0 +1,198 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kerby.util;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Provides Base64 encoding and decoding in a streaming fashion (unlimited size). When encoding the default lineLength
+ * is 76 characters and the default lineEnding is CRLF, but these can be overridden by using the appropriate
+ * constructor.
+ * <p>
+ * The default behaviour of the Base64OutputStream is to ENCODE, whereas the default behaviour of the Base64InputStream
+ * is to DECODE. But this behaviour can be overridden by using a different constructor.
+ * </p>
+ * <p>
+ * This class implements section <cite>6.8. Base64 Content-Transfer-Encoding</cite> from RFC 2045 <cite>Multipurpose
+ * Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies</cite> by Freed and Borenstein.
+ * </p>
+ * <p>
+ * Since this class operates directly on byte streams, and not character streams, it is hard-coded to only encode/decode
+ * character encodings which are compatible with the lower 127 ASCII chart (ISO-8859-1, Windows-1252, UTF-8, etc).
+ * </p>
+ *
+ * @author Apache Software Foundation
+ * @version $Id$
+ * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a>
+ * @since 1.4
+ */
+public class Base64OutputStream extends FilterOutputStream {
+    private final boolean doEncode;
+
+    private final Base64 base64;
+
+    private final byte[] singleByte = new byte[1];
+
+    /**
+     * Creates a Base64OutputStream such that all data written is Base64-encoded to the original provided OutputStream.
+     *
+     * @param out
+     *            OutputStream to wrap.
+     */
+    public Base64OutputStream(OutputStream out) {
+        this(out, true);
+    }
+
+    /**
+     * Creates a Base64OutputStream such that all data written is either Base64-encoded or Base64-decoded to the
+     * original provided OutputStream.
+     *
+     * @param out
+     *            OutputStream to wrap.
+     * @param doEncode
+     *            true if we should encode all data written to us, false if we should decode.
+     */
+    public Base64OutputStream(OutputStream out, boolean doEncode) {
+        super(out);
+        this.doEncode = doEncode;
+        this.base64 = new Base64();
+    }
+
+    /**
+     * Creates a Base64OutputStream such that all data written is either Base64-encoded or Base64-decoded to the
+     * original provided OutputStream.
+     *
+     * @param out
+     *            OutputStream to wrap.
+     * @param doEncode
+     *            true if we should encode all data written to us, false if we should decode.
+     * @param lineLength
+     *            If doEncode is true, each line of encoded data will contain lineLength characters (rounded down to
+     *            nearest multiple of 4). If lineLength <=0, the encoded data is not divided into lines. If doEncode is
+     *            false, lineLength is ignored.
+     * @param lineSeparator
+     *            If doEncode is true, each line of encoded data will be terminated with this byte sequence (e.g. \r\n).
+     *            If lineLength <= 0, the lineSeparator is not used. If doEncode is false lineSeparator is ignored.
+     */
+    public Base64OutputStream(OutputStream out, boolean doEncode, int lineLength, byte[] lineSeparator) {
+        super(out);
+        this.doEncode = doEncode;
+        this.base64 = new Base64(lineLength, lineSeparator);
+    }
+
+    /**
+     * Writes the specified <code>byte</code> to this output stream.
+     *
+     * @param i
+     *            source byte
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     */
+    public void write(int i) throws IOException {
+        singleByte[0] = (byte) i;
+        write(singleByte, 0, 1);
+    }
+
+    /**
+     * Writes <code>len</code> bytes from the specified <code>b</code> array starting at <code>offset</code> to this
+     * output stream.
+     *
+     * @param b
+     *            source byte array
+     * @param offset
+     *            where to start reading the bytes
+     * @param len
+     *            maximum number of bytes to write
+     *
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     * @throws NullPointerException
+     *             if the byte array parameter is null
+     * @throws IndexOutOfBoundsException
+     *             if offset, len or buffer size are invalid
+     */
+    public void write(byte[] b, int offset, int len) throws IOException {
+        if (b == null) {
+            throw new NullPointerException();
+        } else if (offset < 0 || len < 0) {
+            throw new IndexOutOfBoundsException();
+        } else if (offset > b.length || offset + len > b.length) {
+            throw new IndexOutOfBoundsException();
+        } else if (len > 0) {
+            if (doEncode) {
+                base64.encode(b, offset, len);
+            } else {
+                base64.decode(b, offset, len);
+            }
+            flush(false);
+        }
+    }
+
+    /**
+     * Flushes this output stream and forces any buffered output bytes to be written out to the stream. If propogate is
+     * true, the wrapped stream will also be flushed.
+     *
+     * @param propogate
+     *            boolean flag to indicate whether the wrapped OutputStream should also be flushed.
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     */
+    private void flush(boolean propogate) throws IOException {
+        int avail = base64.avail();
+        if (avail > 0) {
+            byte[] buf = new byte[avail];
+            int c = base64.readResults(buf, 0, avail);
+            if (c > 0) {
+                out.write(buf, 0, c);
+            }
+        }
+        if (propogate) {
+            out.flush();
+        }
+    }
+
+    /**
+     * Flushes this output stream and forces any buffered output bytes to be written out to the stream.
+     *
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     */
+    public void flush() throws IOException {
+        flush(true);
+    }
+
+    /**
+     * Closes this output stream and releases any system resources associated with the stream.
+     *
+     * @throws java.io.IOException
+     *             if an I/O error occurs.
+     */
+    public void close() throws IOException {
+        // Notify encoder of EOF (-1).
+        if (doEncode) {
+            base64.encode(singleByte, 0, -1);
+        } else {
+            base64.decode(singleByte, 0, -1);
+        }
+        flush();
+        out.close();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/Hex.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/Hex.java b/kerby-util/src/main/java/org/apache/kerby/util/Hex.java
new file mode 100644
index 0000000..ec61298
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/Hex.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.kerby.util;
+
+/**
+ * Utility class for dealing with hex-encoding of binary data.
+ *
+ * @author <a href="mailto:juliusdavies@cucbc.com">juliusdavies@gmail.com</a>
+ * @since 13-Nov-2007
+ */
+public class Hex {
+
+    public static byte[] decode(String s) {
+        byte[] b = new byte[s.length() / 2];
+        for (int i = 0; i < b.length; i++) {
+            String hex = s.substring(2 * i, 2 * (i + 1));
+            b[i] = (byte) Integer.parseInt(hex, 16);
+        }
+        return b;
+    }
+
+    public static byte[] decode(byte[] hexString) {
+        byte[] b = new byte[hexString.length / 2];
+        char[] chars = new char[2];
+        for (int i = 0; i < b.length; i++) {
+            chars[0] = (char) hexString[2 * i];
+            chars[1] = (char) hexString[2 * i + 1];
+            String hex = new String(chars);
+            b[i] = (byte) Integer.parseInt(hex, 16);
+        }
+        return b;
+    }
+
+    public static String encode(byte[] b) {
+        return encode(b, 0, b.length);
+    }
+
+    public static String encode(byte[] b, int offset, int length) {
+        StringBuffer buf = new StringBuffer();
+        int len = Math.min(offset + length, b.length);
+        for (int i = offset; i < len; i++) {
+            int c = (int) b[i];
+            if (c < 0) {
+                c = c + 256;
+            }
+            if (c >= 0 && c <= 15) {
+                buf.append('0');
+            }
+            buf.append(Integer.toHexString(c));
+        }
+        return buf.toString();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/HexUtil.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/HexUtil.java b/kerby-util/src/main/java/org/apache/kerby/util/HexUtil.java
new file mode 100644
index 0000000..39442ee
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/HexUtil.java
@@ -0,0 +1,59 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.util;
+
+public final class HexUtil {
+    private HexUtil() { }
+
+    private static final String HEX_CHARS_STR = "0123456789ABCDEF";
+    private static final char[] HEX_CHARS = HEX_CHARS_STR.toCharArray();
+
+    /**
+     * Convert bytes into format as:
+     * 02020080
+     */
+    public static String bytesToHex(byte[] bytes) {
+        int len = bytes.length * 2;
+        char[] hexChars = new char[len];
+        for (int j = 0; j < bytes.length; j++) {
+            int v = bytes[j] & 0xFF;
+            hexChars[j * 2] = HEX_CHARS[v >>> 4];
+            hexChars[j * 2 + 1] = HEX_CHARS[v & 0x0F];
+        }
+
+        return new String(hexChars);
+    }
+
+    /**
+     * Convert hex string like follows into byte array
+     * 02020080
+     */
+    public static byte[] hex2bytes(String hexString) {
+        hexString = hexString.toUpperCase();
+        int len = hexString.length() / 2;
+        byte[] bytes = new byte[len];
+        char[] hexChars = hexString.toCharArray();
+        for (int i = 0, j = 0; i < len; ++i) {
+            bytes[i] = (byte) ((HEX_CHARS_STR.indexOf(hexChars[j++]) << 4) + HEX_CHARS_STR.indexOf(hexChars[j++]));
+        }
+
+        return bytes;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/IOUtil.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/IOUtil.java b/kerby-util/src/main/java/org/apache/kerby/util/IOUtil.java
new file mode 100644
index 0000000..3e52932
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/IOUtil.java
@@ -0,0 +1,106 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ *
+ */
+package org.apache.kerby.util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+
+/**
+ * Some IO and file related utilities.
+ */
+public final class IOUtil {
+    private IOUtil() { }
+
+    public static byte[] readInputStream(InputStream in) throws IOException {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        byte[] buffer = new byte[1024];
+        int length = 0;
+        while ((length = in.read(buffer)) != -1) {
+            baos.write(buffer, 0, length);
+        }
+        return baos.toByteArray();
+    }
+
+    public static void readInputStream(InputStream in,
+                                       byte[] buf) throws IOException {
+        int toRead = buf.length;
+        int off = 0;
+        while (toRead > 0) {
+            int ret = in.read(buf, off, toRead);
+            if (ret < 0) {
+                throw new IOException("Bad inputStream, premature EOF");
+            }
+            toRead -= ret;
+            off += ret;
+        }
+    }
+
+    /**
+     * Read an input stream and return the content as string assuming UTF8.
+     * @param in
+     * @return
+     * @throws IOException
+     */
+    public static String readInput(InputStream in) throws IOException {
+        byte[] content = readInputStream(in);
+        return Utf8.toString(content);
+    }
+
+    /**
+     * Read a file and return the content as string assuming UTF8.
+     * @param file
+     * @return
+     * @throws IOException
+     */
+    public static String readFile(File file) throws IOException {
+        long len = 0;
+        if (file.length() >= Integer.MAX_VALUE) {
+            throw new IOException("Too large file, unexpected!");
+        } else {
+            len = file.length();
+        }
+        byte[] buf = new byte[(int) len];
+
+        InputStream is = new FileInputStream(file);
+        readInputStream(is, buf);
+
+        return Utf8.toString(buf);
+    }
+
+    /**
+     * Write a file with the content assuming UTF8.
+     * @param content
+     * @param file
+     * @throws IOException
+     */
+    public static void writeFile(String content, File file) throws IOException {
+        FileOutputStream outputStream = new FileOutputStream(file);
+        FileChannel fc = outputStream.getChannel();
+
+        ByteBuffer buffer = ByteBuffer.wrap(Utf8.toBytes(content));
+        fc.write(buffer);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/NetworkUtil.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/NetworkUtil.java b/kerby-util/src/main/java/org/apache/kerby/util/NetworkUtil.java
new file mode 100644
index 0000000..6f8c57d
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/NetworkUtil.java
@@ -0,0 +1,48 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ *
+ */
+package org.apache.kerby.util;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+
+/**
+ * Some network related utilities.
+ */
+public final class NetworkUtil {
+    private NetworkUtil() { }
+
+    /**
+     * Get a server socket point for server, either TCP or UDP.
+     * @return server socket point
+     */
+    public static int getServerPort() {
+        int serverPort = 0;
+
+        try {
+            ServerSocket serverSocket = new ServerSocket(0);
+            serverPort = serverSocket.getLocalPort();
+            serverSocket.close();
+        } catch (IOException e) {
+            throw new RuntimeException("Failed to get a server socket point");
+        }
+
+        return serverPort;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/OSUtil.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/OSUtil.java b/kerby-util/src/main/java/org/apache/kerby/util/OSUtil.java
new file mode 100644
index 0000000..d6dbcd2
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/OSUtil.java
@@ -0,0 +1,62 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ *
+ */
+package org.apache.kerby.util;
+
+/**
+ * An OS related utility, mainly detecting what's the platform it's rnning on.
+ */
+public final class OSUtil {
+    private OSUtil() { }
+
+    private static final String OS =
+            System.getProperty("os.name").toLowerCase();
+
+    public static boolean isWindows() {
+        return OS.contains("win");
+    }
+
+    public static boolean isMac() {
+        return OS.contains("mac");
+    }
+
+    public static boolean isUnix() {
+        return OS.contains("nix") || OS.contains("nux") || OS.contains("aix");
+    }
+
+    public static boolean isSolaris() {
+        return OS.contains("sunos");
+    }
+
+    public static void main(String[] args) {
+        System.out.println(OS);
+
+        if (isWindows()) {
+            System.out.println("This is Windows");
+        } else if (isMac()) {
+            System.out.println("This is Mac");
+        } else if (isUnix()) {
+            System.out.println("This is Unix or Linux");
+        } else if (isSolaris()) {
+            System.out.println("This is Solaris");
+        } else {
+            System.out.println("Your OS is not support!!");
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/SysUtil.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/SysUtil.java b/kerby-util/src/main/java/org/apache/kerby/util/SysUtil.java
new file mode 100644
index 0000000..d607871
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/SysUtil.java
@@ -0,0 +1,35 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ *
+ */
+package org.apache.kerby.util;
+
+import java.io.File;
+
+/**
+ * A system related utility.
+ */
+public final class SysUtil {
+    private SysUtil() { }
+
+    public static File getTempDir() {
+        String tmpDir = System.getProperty("java.io.tmpdir");
+        return new File(tmpDir);
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/kerby-util/src/main/java/org/apache/kerby/util/Utf8.java
----------------------------------------------------------------------
diff --git a/kerby-util/src/main/java/org/apache/kerby/util/Utf8.java b/kerby-util/src/main/java/org/apache/kerby/util/Utf8.java
new file mode 100644
index 0000000..4952665
--- /dev/null
+++ b/kerby-util/src/main/java/org/apache/kerby/util/Utf8.java
@@ -0,0 +1,42 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ *
+ */
+package org.apache.kerby.util;
+
+import java.io.UnsupportedEncodingException;
+
+public final class Utf8 {
+    private Utf8() { }
+
+    public static String toString(byte[] bytes) {
+        try {
+            return new String(bytes, "UTF-8");
+        } catch (UnsupportedEncodingException uee) {
+            throw new RuntimeException("UTF8 unavailable", uee);
+        }
+    }
+
+    public static byte[] toBytes(String s) {
+        try {
+            return s.getBytes("UTF-8");
+        } catch (UnsupportedEncodingException uee) {
+            throw new RuntimeException("UTF8 unavailable", uee);
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/lib/README.md
----------------------------------------------------------------------
diff --git a/lib/README.md b/lib/README.md
deleted file mode 100644
index 92c7329..0000000
--- a/lib/README.md
+++ /dev/null
@@ -1 +0,0 @@
-This contains all the libraries that the Kerberos implementation relies on.
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/lib/kerby-config/README
----------------------------------------------------------------------
diff --git a/lib/kerby-config/README b/lib/kerby-config/README
deleted file mode 100644
index 37eb019..0000000
--- a/lib/kerby-config/README
+++ /dev/null
@@ -1 +0,0 @@
-An unified configuration API that crosses various popular configuration formats like XML, JSON, INI and etc.
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/lib/kerby-config/pom.xml
----------------------------------------------------------------------
diff --git a/lib/kerby-config/pom.xml b/lib/kerby-config/pom.xml
deleted file mode 100644
index 1499d09..0000000
--- a/lib/kerby-config/pom.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License. See accompanying LICENSE file.
--->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-
-  <parent>
-    <groupId>org.apache.kerby</groupId>
-    <artifactId>lib</artifactId>
-    <version>1.0-SNAPSHOT</version>
-  </parent>
-
-  <modelVersion>4.0.0</modelVersion>
-
-  <artifactId>kerby-config</artifactId>
-  <name>Kerby Config</name>
-  <description>Kerby config library</description>
-
-  <dependencies>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
-    </dependency>
-  </dependencies>
-</project>

http://git-wip-us.apache.org/repos/asf/directory-kerby/blob/6bb66073/lib/kerby-config/src/main/java/org/apache/kerby/config/Conf.java
----------------------------------------------------------------------
diff --git a/lib/kerby-config/src/main/java/org/apache/kerby/config/Conf.java b/lib/kerby-config/src/main/java/org/apache/kerby/config/Conf.java
deleted file mode 100644
index a207f52..0000000
--- a/lib/kerby-config/src/main/java/org/apache/kerby/config/Conf.java
+++ /dev/null
@@ -1,342 +0,0 @@
-/**
- *  Licensed to the Apache Software Foundation (ASF) under one
- *  or more contributor license agreements.  See the NOTICE file
- *  distributed with this work for additional information
- *  regarding copyright ownership.  The ASF licenses this file
- *  to you under the Apache License, Version 2.0 (the
- *  "License"); you may not use this file except in compliance
- *  with the License.  You may obtain a copy of the License at
- *  
- *    http://www.apache.org/licenses/LICENSE-2.0
- *  
- *  Unless required by applicable law or agreed to in writing,
- *  software distributed under the License is distributed on an
- *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- *  KIND, either express or implied.  See the License for the
- *  specific language governing permissions and limitations
- *  under the License. 
- *  
- */
-package org.apache.kerby.config;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import java.util.Set;
-
-public class Conf implements Config {
-    private static final Logger LOGGER = LoggerFactory.getLogger(Conf.class);
-
-    private List<ConfigLoader> resourceConfigs;
-    private final ConfigImpl config;
-    private final Map<String, String> setValues;
-    private boolean needReload;
-
-    public Conf() {
-        this.resourceConfigs = new ArrayList<ConfigLoader>(1);
-        this.config = new ConfigImpl("Conf");
-        this.setValues = new HashMap<>(10);
-        this.needReload = true;
-
-        addMapConfig(setValues);
-    }
-
-    public void addXmlConfig(File xmlFile) throws IOException {
-        addResource(Resource.createXmlResource(xmlFile));
-    }
-
-    public void addIniConfig(File iniFile) throws IOException {
-        addResource(Resource.createIniResource(iniFile));
-    }
-
-    public void addJsonConfig(File jsonFile) throws IOException {
-        addResource(Resource.createJsonResource(jsonFile));
-    }
-
-    public void addPropertiesConfig(File propertiesFile) throws IOException {
-        addResource(Resource.createPropertiesFileResource(propertiesFile));
-    }
-
-    public void addPropertiesConfig(Properties propertiesConfig) {
-        addResource(Resource.createPropertiesResource(propertiesConfig));
-    }
-
-    public void addMapConfig(Map<String, String> mapConfig) {
-        addResource(Resource.createMapResource(mapConfig));
-    }
-
-    public void addResource(Resource resource) {
-        ConfigLoader loader = getLoader(resource);
-        resourceConfigs.add(loader);
-        needReload = true;
-    }
-
-    private static ConfigLoader getLoader(Resource resource) {
-        ConfigLoader loader = null;
-
-        Class<? extends ConfigLoader> loaderClass = resource.getFormat().getLoaderClass();
-        try {
-            loader = loaderClass.newInstance();
-        } catch (Exception e) {
-            LOGGER.error("Failed to create " + Conf.class.getPackage().getName()
-                    + " for " + loaderClass.getName(), e);
-            throw new RuntimeException("Failed to create "
-                    + Conf.class.getPackage().getName() + " for " + loaderClass.getName(), e);
-        }
-        loader.setResource(resource);
-        return loader;
-    }
-
-    private void checkAndLoad() {
-        if (needReload) {
-            reload();
-            needReload = false;
-        }
-    }
-
-    public void reload() {
-        config.reset();
-
-        for (ConfigLoader loader : resourceConfigs) {
-            Config loaded = loader.load();
-            config.add(loaded);
-        }
-    }
-
-    @Override
-    public String getResource() {
-        checkAndLoad();
-        return config.getResource();
-    }
-
-    @Override
-    public Set<String> getNames() {
-        checkAndLoad();
-        return config.getNames();
-    }
-
-    @Override
-    public String getString(String name) {
-        checkAndLoad();
-        return config.getString(name);
-    }
-
-    @Override
-    public String getString(ConfigKey name) {
-        checkAndLoad();
-        return config.getString(name);
-    }
-
-    @Override
-    public String getString(String name, String defaultValue) {
-        checkAndLoad();
-        return config.getString(name, defaultValue);
-    }
-
-    @Override
-    public void setString(String name, String value) {
-        setValues.put(name, value);
-    }
-
-    @Override
-    public void setString(ConfigKey name, String value) {
-        setString(name.getPropertyKey(), value);
-    }
-
-    @Override
-    public String getTrimmed(String name) {
-        checkAndLoad();
-        return config.getTrimmed(name);
-    }
-
-    @Override
-    public String getTrimmed(ConfigKey name) {
-        checkAndLoad();
-        return config.getTrimmed(name);
-    }
-
-    @Override
-    public Boolean getBoolean(String name) {
-        checkAndLoad();
-        return config.getBoolean(name);
-    }
-
-    @Override
-    public Boolean getBoolean(ConfigKey name) {
-        checkAndLoad();
-        return config.getBoolean(name);
-    }
-
-    @Override
-    public Boolean getBoolean(String name, boolean defaultValue) {
-        checkAndLoad();
-        return config.getBoolean(name, defaultValue);
-    }
-
-    @Override
-    public void setBoolean(String name, boolean value) {
-        setString(name, String.valueOf(value));
-    }
-
-    @Override
-    public void setBoolean(ConfigKey name, boolean value) {
-        setString(name.getPropertyKey(), String.valueOf(value));
-    }
-
-    @Override
-    public Integer getInt(String name) {
-        checkAndLoad();
-        return config.getInt(name);
-    }
-
-    @Override
-    public Integer getInt(ConfigKey name) {
-        checkAndLoad();
-        return config.getInt(name);
-    }
-
-    @Override
-    public Integer getInt(String name, int defaultValue) {
-        checkAndLoad();
-        return config.getInt(name, defaultValue);
-    }
-
-    @Override
-    public void setInt(String name, int value) {
-        setString(name, String.valueOf(value));
-    }
-
-    @Override
-    public void setInt(ConfigKey name, int value) {
-        setString(name.getPropertyKey(), String.valueOf(value));
-    }
-
-    @Override
-    public Long getLong(String name) {
-        checkAndLoad();
-        return config.getLong(name);
-    }
-
-    @Override
-    public Long getLong(ConfigKey name) {
-        checkAndLoad();
-        return config.getLong(name);
-    }
-
-    @Override
-    public Long getLong(String name, long defaultValue) {
-        checkAndLoad();
-        return config.getLong(name, defaultValue);
-    }
-
-    @Override
-    public void setLong(String name, long value) {
-        setString(name, String.valueOf(value));
-    }
-
-    @Override
-    public void setLong(ConfigKey name, long value) {
-        setString(name.getPropertyKey(), String.valueOf(value));
-    }
-
-    @Override
-    public Float getFloat(String name) {
-        checkAndLoad();
-        return config.getFloat(name);
-    }
-
-    @Override
-    public Float getFloat(ConfigKey name) {
-        checkAndLoad();
-        return config.getFloat(name);
-    }
-
-    @Override
-    public Float getFloat(String name, float defaultValue) {
-        checkAndLoad();
-        return config.getFloat(name, defaultValue);
-    }
-
-    @Override
-    public void setFloat(String name, float value) {
-        setString(name, String.valueOf(value));
-    }
-
-    @Override
-    public void setFloat(ConfigKey name, float value) {
-        setString(name.getPropertyKey(), String.valueOf(value));
-    }
-
-    @Override
-    public List<String> getList(String name) {
-        checkAndLoad();
-        return config.getList(name);
-    }
-
-    @Override
-    public List<String> getList(String name, String[] defaultValue) {
-        checkAndLoad();
-        return config.getList(name, defaultValue);
-    }
-
-    @Override
-    public List<String> getList(ConfigKey name) {
-        checkAndLoad();
-        return config.getList(name);
-    }
-
-    @Override
-    public Config getConfig(String name) {
-        checkAndLoad();
-        return config.getConfig(name);
-    }
-
-    @Override
-    public Config getConfig(ConfigKey name) {
-        checkAndLoad();
-        return config.getConfig(name);
-    }
-
-    @Override
-    public Class<?> getClass(String name) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getClass(name);
-    }
-
-    @Override
-    public Class<?> getClass(String name, Class<?> defaultValue) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getClass(name, defaultValue);
-    }
-
-    @Override
-    public Class<?> getClass(ConfigKey name) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getClass(name);
-    }
-
-    @Override
-    public <T> T getInstance(String name) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getInstance(name);
-    }
-
-    @Override
-    public <T> T getInstance(ConfigKey name) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getInstance(name);
-    }
-
-    @Override
-    public <T> T getInstance(String name, Class<T> xface) throws ClassNotFoundException {
-        checkAndLoad();
-        return config.getInstance(name, xface);
-    }
-}
\ No newline at end of file


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