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From "Colm O hEigeartaigh (JIRA)" <>
Subject [jira] [Commented] (WSS-399) WSS4J: cannot set DigestMethod for KEYTRANSPORT_RSAOEP though requested by W3C
Date Mon, 13 Aug 2012 10:00:38 GMT


Colm O hEigeartaigh commented on WSS-399:

In WSS4J 1.6.8 you will be able to configure a digest algorithm to use with RSA OAEP either
programmatically via WSSecEncrypt or else via the "encryptionDigestAlgorithm" configuration

> WSS4J: cannot set DigestMethod for KEYTRANSPORT_RSAOEP though requested by W3C
> ------------------------------------------------------------------------------
>                 Key: WSS-399
>                 URL:
>             Project: WSS4J
>          Issue Type: Bug
>          Components: WSS4J Core
>    Affects Versions: 1.6.7
>         Environment: any
>            Reporter: Stefan
>            Assignee: Colm O hEigeartaigh
>             Fix For: 1.6.8
> As stated on (and
there should be the possibility to set the message digest that is listed as MANDATORY (and
shall be set in the generated output).
> 5.4.2 RSA-OAEP
> Identifier:
> The RSAES-OAEP-ENCRYPT algorithm, as specified in RFC 2437 [PKCS1], takes three parameters.
The two user specified parameters are a MANDATORY message digest function and an OPTIONAL
encoding octet string OAEPparams. The message digest function is indicated by the Algorithm
attribute of a child ds:DigestMethod element and the mask generation function, the third parameter,
is always MGF1 with SHA1 (mgf1SHA1Identifier). Both the message digest and mask generation
functions are used in the EME-OAEP-ENCODE operation as part of RSAES-OAEP-ENCRYPT. The encoding
octet string is the base64 decoding of the content of an optional OAEPparams child element
. If no OAEPparams child is provided, a null string is used.

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