http://www.rfc-editor.org/rfc/rfc4056.txt
RFC 4056: Use of the RSASSA-PSS Signature Algorithm in Cryptographic Message Syntax (CMS), J. Schaad2005-06-01T23:00:00-00:00This document specifies the conventions for using the RSASSA-PSS (RSA Probabilistic Signature Scheme) digital signature algorithm with the Cryptographic Message Syntax (CMS). [STANDARDS-TRACK]