CertiGuide to Security+  9  Chapter 4:  Basics of Cryptography (Domain 4.0; 15%)       9  4.4  Standards and Protocols

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IETF, the Internet Engineering Task Force, is responsible for the Internet protocol standards, which include cryptography as used on the Internet.

The IETF PKIX (public key infrastructure X.509) committee is involved in the issues of public key management and public key systems. PKIX defines standards for the format of a certificate and the protocols needed to authenticate and issue certificates to entities. Certificates, as defined by PKIX, can be used by the TLS and IPSEC protocols. There are also IETF committees working on secure email – S/MIME (using PKIX keys) and PGP/MIME (using its own key management scheme).

While many standards are still under development, the IETF has already issued a number of RFC’s relevant to public-key cryptography, including the MD5 message digest algorithm, key exchange algorithms, certificate revocation list profile, online certificate status protocol, etc.

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