Introduction This document specifies the algorithm identifiers and specifies parameters for the message digest algorithms SHA-224@ SHA-256@ SHA-384@ and SHA-512 for use with the Cryptographic Message Syntax (CMS) [RFC5652]. The message digest algorithms are defined in [SHS] and reference code is provided in [RFC4634]. This document also specifies the algorithm identifiers and parameters for use of SHA-224@ SHA-256@ SHA-384@ and SHA-512 with DSA [DSS]@ RSA (RSASSA-PKCS1-v1_5) [RFC3447]@ and ECDSA [DSS]. This document does not define new identifiers; they are taken from [RFC3874]@ [RFC4055]@ and [RFC5758]. Additionally@ the parameters follow the conventions specified therein. Therefore@ there is no Abstract Syntax Notation One (ASN.1) module included in this document. Note that [RFC4231] specifies the conventions for the message authentication code (MAC) algorithms: Hashed MAC (HMAC) with SHA-224@ HMAC with SHA-256@ HMAC with SHA-384@ and HMAC with SHA-512. In the CMS@ the various algorithm identifiers use the AlgorithmIdentifier syntax@ which is included here for convenience: AlgorithmIdentifier ::= SEQUENCE { algorithm OBJECT IDENTIFIER@ parameters ANY DEFINED BY algorithm OPTIONAL } This document also specifies the SMIMECapabilities attribute values [RFC5751] for each algorithm. The values provided are for the SMIMECapability field@ which is included here for convenience: SMIMECapability ::= SEQUENCE { capabilityID OBJECT IDENTIFIER@ parameters ANY DEFINED BY capabilityID OPTIONAL }
RFC 5754-2010 history
2010RFC 5754-2010 Using SHA2 Algorithms with Cryptographic Message Syntax (Updates: 3370)