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## 8.1 Available MAC algorithms

`GCRY_MAC_NONE`

This is not a real algorithm but used by some functions as an error return value. This constant is guaranteed to have the value

`0`

.`GCRY_MAC_HMAC_SHA256`

This is keyed-hash message authentication code (HMAC) message authentication algorithm based on the SHA-256 hash algorithm.

`GCRY_MAC_HMAC_SHA224`

This is HMAC message authentication algorithm based on the SHA-224 hash algorithm.

`GCRY_MAC_HMAC_SHA512`

This is HMAC message authentication algorithm based on the SHA-512 hash algorithm.

`GCRY_MAC_HMAC_SHA384`

This is HMAC message authentication algorithm based on the SHA-384 hash algorithm.

`GCRY_MAC_HMAC_SHA1`

This is HMAC message authentication algorithm based on the SHA-1 hash algorithm.

`GCRY_MAC_HMAC_MD5`

This is HMAC message authentication algorithm based on the MD5 hash algorithm.

`GCRY_MAC_HMAC_MD4`

This is HMAC message authentication algorithm based on the MD4 hash algorithm.

`GCRY_MAC_HMAC_RMD160`

This is HMAC message authentication algorithm based on the RIPE-MD-160 hash algorithm.

`GCRY_MAC_HMAC_WHIRLPOOL`

This is HMAC message authentication algorithm based on the WHIRLPOOL hash algorithm.

`GCRY_MAC_HMAC_GOSTR3411_94`

This is HMAC message authentication algorithm based on the GOST R 34.11-94 hash algorithm.

`GCRY_MAC_HMAC_STRIBOG256`

This is HMAC message authentication algorithm based on the 256-bit hash algorithm described in GOST R 34.11-2012.

`GCRY_MAC_HMAC_STRIBOG512`

This is HMAC message authentication algorithm based on the 512-bit hash algorithm described in GOST R 34.11-2012.

`GCRY_MAC_CMAC_AES`

This is CMAC (Cipher-based MAC) message authentication algorithm based on the AES block cipher algorithm.

`GCRY_MAC_CMAC_3DES`

This is CMAC message authentication algorithm based on the three-key EDE Triple-DES block cipher algorithm.

`GCRY_MAC_CMAC_CAMELLIA`

This is CMAC message authentication algorithm based on the Camellia block cipher algorithm.

`GCRY_MAC_CMAC_CAST5`

This is CMAC message authentication algorithm based on the CAST128-5 block cipher algorithm.

`GCRY_MAC_CMAC_BLOWFISH`

This is CMAC message authentication algorithm based on the Blowfish block cipher algorithm.

`GCRY_MAC_CMAC_TWOFISH`

This is CMAC message authentication algorithm based on the Twofish block cipher algorithm.

`GCRY_MAC_CMAC_SERPENT`

This is CMAC message authentication algorithm based on the Serpent block cipher algorithm.

`GCRY_MAC_CMAC_SEED`

This is CMAC message authentication algorithm based on the SEED block cipher algorithm.

`GCRY_MAC_CMAC_RFC2268`

This is CMAC message authentication algorithm based on the Ron’s Cipher 2 block cipher algorithm.

`GCRY_MAC_CMAC_IDEA`

This is CMAC message authentication algorithm based on the IDEA block cipher algorithm.

`GCRY_MAC_CMAC_GOST28147`

This is CMAC message authentication algorithm based on the GOST 28147-89 block cipher algorithm.

`GCRY_MAC_GMAC_AES`

This is GMAC (GCM mode based MAC) message authentication algorithm based on the AES block cipher algorithm.

`GCRY_MAC_GMAC_CAMELLIA`

This is GMAC message authentication algorithm based on the Camellia block cipher algorithm.

`GCRY_MAC_GMAC_TWOFISH`

This is GMAC message authentication algorithm based on the Twofish block cipher algorithm.

`GCRY_MAC_GMAC_SERPENT`

This is GMAC message authentication algorithm based on the Serpent block cipher algorithm.

`GCRY_MAC_GMAC_SEED`

This is GMAC message authentication algorithm based on the SEED block cipher algorithm.

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