Cryptographic Token Interface Standard

PKCS#11

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SHA-1-HMAC

The SHA-1-HMAC mechanism, denoted CKM_SHA_1_HMAC, is a special case of the general-length SHA-1-HMAC mechanism in Section 12.29.2.

It has no parameter, and always produces an output of length 20.

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RSA Security Inc. Public-Key Cryptography Standards - PKCS#11 - v211