vt-crypt: Support signing and verify signed MACs

[GoogleCodeExporter]

Provide helper methods for signing a MAC and verifying MAC signatures.

Our implementation of these can be found here:
http://svn.shibboleth.net/view/java-opensaml/trunk/opensaml-security-api/src/mai
n/java/org/opensaml/xml/security/SigningUtil.java?revision=2850&view=markup

Original issue reported on code.google.com by claj...@gmail.com on 6 Dec 2011 at 3:40

[GoogleCodeExporter]

This is an enhancement request.

Original comment by marvin.addison@gmail.com on 20 Dec 2011 at 3:17

• Added labels: Type-Enhancement
• Removed labels: Type-Defect

[GoogleCodeExporter]

Original comment by marvin.addison@gmail.com on 5 Mar 2012 at 6:47

[GoogleCodeExporter]

Just now getting to analyzing requirements for this.  There are two distinct 
operations related to signing in the class you cited:

 - Generation of a MAC from a key (which in your particular case is a private)
 - Signing and verification of a MAC

I don't read the first case from the issue description.  We should probably add 
first-class support for HMAC operations, as we've done with other crypto 
primitives, but that's a much larger scope task.

As for signing and verification of MACs, it appears to be a special case of 
digital signatures generally.  Can you explain why the existing support for 
digital signatures is insufficient for your needs?

Original comment by marvin.addison@gmail.com on 3 Apr 2012 at 4:14

[GoogleCodeExporter]

Closing with WONTFIX since it appears the issue has been abandoned by 
submitter. We can reopen in the future if the original requirements are 
clarified.

Original comment by marvin.addison@gmail.com on 21 Feb 2013 at 8:47

• Changed state: WontFix