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RFC 4210 defines the Certificate Menagement Protocol (CMP)
RFC 4211 defines the Certificate Request Message Format (CRMF) which is used by CMP
This draft tries to specify Transport Protocols for CMP
OpenSSL is the base of CMP for OpenSSL
Cryptlib was the first server implementation CMP for OpenSSL did interoperate with.
Insta DefSec produces the Instaâ„¢ Certifier whose interoperability is work in progress right now.
EJBCA is a J2EE Certificate Authority. It might be supported by CMP for OpenSSL soon.
Wireshark dissects CMP version 2 HTTP messages since version 0.99.7. The TCP transport of the draft mentioned above is possible with recent SVN revisions (post 1.0.0).
Subversion is used for version control
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