allowed by SP 800-135 Revision 1. package ssh import ( _ "crypto/internal/fips140/check" "hash" ) type Direction struct { ivTag []byte keyTag []byte macKeyTag []byte } var ServerKeys, ClientKeys Direction func init() { ServerKeys = Direction{[]byte{'B'}, []byte{'D'}, []byte{'F'}} ClientKeys = Direction{[]byte{'A'}, []byte{'C'}, []byte{'E'}} } func Keys[Hash hash.Hash](hash func() Hash, d Direction, K, H, sessionID []byte, ivKeyLen, keyLen, macKeyLen int, ) (ivKey, key, macKey []byte) { h := hash()...