IETF RFC 5035
Enhanced Security Services (ESS) Update: Adding CertID Algorithm Agility
|Publication Date:||1 August 2007|
In the original Enhanced Security Services for S/MIME document (RFC 2634), a structure for cryptographically linking the certificate to be used in validation with the signature was introduced; this structure was hardwired to use SHA-1. This document allows for the structure to have algorithm agility and defines a new attribute for this purpose.