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Title : Using HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 With IPsec
Author(s) : S. Kelly, S. Frankel
Filename : draft-kelly-ipsec-ciph-sha2-01.txt
Pages : 14
Date : 2007-1-8
This specification describes the use of HMAC in conjunction with the
SHA-256, SHA-384, and SHA-512 algorithms in IPsec. These algorithms
may be used as the basis for data origin authentication and integrity
verification mechanisms for the AH, ESP, IKE and IKEv2 protocols, and
also as Pseudo-Random Functions (PRFs) for IKE and IKEv2. Truncated
output lengths are specified for the authentication-related variants,
with the corresponding algorithms designated as HMAC-SHA-256-128,
HMAC-SHA-384-192, and HMAC-SHA-512-256. The PRF variants are not
truncated, and are called HMAC-SHA-PRF-256, HMAC-SHA-PRF-384, and
HMAC-SHA-PRF-512.
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