Digital signature...

From: Pieter Philippaerts (
Date: 07/07/03

Date: Mon, 7 Jul 2003 04:44:09 +0200

Does anyone know how to specify a hash algorithm other than MD5 and SHA1 in
the RSAPKCS1SignatureDeformatter class?
The hash algorithm I'm using is an algorithm that concatenates the MD5 and
SHA1 hashes, but whenever I specify the name of my algorithm and call the
VerifySignature method of the RSAPKCS1SignatureDeformatter it throws a
CryptographicUnexpectedOperationException error that tells me it cannot find
"a required object identifier".

Are hash algorithms other than MD5 and SHA-1 currently unsupported in the
RSAPKCS1SignatureDeformatter class?

Pieter Philippaerts