On Tue, Feb 14, 2012, Roumen Petrov wrote:

> Dr. Stephen Henson wrote:
> >On Wed, Feb 01, 2012, Roumen Petrov wrote:
> [SNIP]
> >Looking into this there is a long standing incompatibility between
> >various functions that use mdc2 for signatures. Since SSLeay the
> >function RSA_sign() using mdc2 as an argument uses a DigestInfo
> >structure whereas using EVP ends up with a different octet string
> >format signature. It's only when the signature code was revised to
> >use RSA_sign more extensively that this is more apparent. How
> >widespread is use of mdc2 for signatures and certificates?
> mdc2 is not important for certificates as the list of certificates
> included in some linux distributions does not include such
> certificates.
> 

Should be fixed now, see:

http://cvs.openssl.org/chngview?cn=22124

to make OpenSSL understand both formats when verifying and:

http://cvs.openssl.org/chngview?cn=22126

to use the same format as older versions of OpenSSL when creating signatures.

Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org
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