SRTP and ICM References September, 2005 This document provides references for the various cryptographic functions used in libSRTP and libaesicm. Secure RTP is defined in RFC 3711, which is included in this distribution for convenience. The counter mode definition is in Section 4.1.1 of the SRTP draft. SHA-1 is defined in FIPS-180-1, available online at the NIST website. HMAC is defined in RFC2104, and HMAC-SHA1 test vectors are available in RFC2202, which are available online at http://www.ietf.org/rfc/ ICM is defined by draft-irtf-cfrg-icm-00.txt, and its application in ISMAcryp (the Internet Streaming Media Alliance 1.0 Encryption and Authentication) is defined in that specification. It is available from http://www.isma.tv/.