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Proposal: CKM_SHA512_224, CKM_SHA512_256, CKM_SHA512_T


On 08/05/2013 06:20 PM, Michael StJohns wrote: There's some disconnect going on here. SHA1 has been deprecated/prohibited only for signatures, it's still permitted for general hashes, KDFs, PRFs and HMACs. So for the current document, its perfectly acceptable to talk about 160 bit lengths. For non-digital signature uses (i.e. for applications that don't depend on collision resistance) there is no known weakness in SHA-1. These applications can continue using SHA-1. There won't be a compliance issue regarding this (again, in non-digital signature applications). The question remains: where would SHA-512/160 be needed today and in the future? I don't see such a use.

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