hashKey is also used in the KMA codepath to hash large nonces. aes.EncryptBlockInternal(&g.cipher, g.hashKey[:], g.hashKey[:]) } // ghashAsm uses the GHASH algorithm to hash data with the given key. The initial // hash value is given by hash which will be updated with the new hash value. // The length of data must be a multiple of 16-bytes. // //go:noescape func ghashAsm(key *gcmHashKey, hash *[16]byte, data []byte) // paddedGHASH pads data with zeroes until its length is a multiple of // 16-bytes....