SHA512_HMAC_INTS_PER_BLOCK
uint64_t sha_ipad[SHA512_HMAC_INTS_PER_BLOCK];
uint64_t sha_opad[SHA512_HMAC_INTS_PER_BLOCK];
sha_ipad, sha_opad, SHA512_HMAC_INTS_PER_BLOCK,
uint64_t sha_ipad[SHA512_HMAC_INTS_PER_BLOCK];
uint64_t sha_opad[SHA512_HMAC_INTS_PER_BLOCK];
sha_ipad, sha_opad, SHA512_HMAC_INTS_PER_BLOCK,