13. Informative References (资料性引用)

• [RFC2712] "Addition of Kerberos Cipher Suites to Transport Layer Security (TLS)", RFC 2712, October 1999.
• [X509-4th] ITU-T Recommendation X.509 (2000), "The Directory: Public key and attribute certificate frameworks".
• [X509-4th-TC1] ITU-T Recommendation X.509(2000) Corrigendum 1(2001).