MAC Algorithm Name,Reference,Note hmac-sha1,[RFC4253],Section 6.4 hmac-sha1-96,[RFC4253],Section 6.4 hmac-md5,[RFC4253],Section 6.4 hmac-md5-96,[RFC4253],Section 6.4 none,[RFC4253],Section 6.4 AEAD_AES_128_GCM,[RFC5647],Section 6.1 AEAD_AES_256_GCM,[RFC5647],Section 6.2 hmac-sha2-256,[RFC6668],Section 2 hmac-sha2-512,[RFC6668],Section 2