case MD5:
		return "MD5"
	case SHA1:
		return "SHA-1"
	case SHA224:
		return "SHA-224"
	case SHA256:
		return "SHA-256"
	case SHA384:
		return "SHA-384"
	case SHA512:
		return "SHA-512"
	case MD5SHA1:
		return "MD5+SHA1"
	case RIPEMD160:
		return "RIPEMD-160"
	case SHA3_224:
		return "SHA3-224"
	case SHA3_256:
		return "SHA3-256"
	case SHA3_384:
		return "SHA3-384"
	case SHA3_512:

// concatenation of an MD5 and SHA1 hash.
func md5SHA1Hash(slices [][]byte) []byte {
	md5sha1 := make([]byte, md5.Size+sha1.Size)
	hmd5 := md5.New()
	for _, slice := range slices {
		hmd5.Write(slice)
	}
	copy(md5sha1, hmd5.Sum(nil))
	copy(md5sha1[md5.Size:], sha1Hash(slices))
	return md5sha1
}

// hashForServerKeyExchange hashes the given slices and returns their digest

}

// cryptoHashToMD converts a crypto.Hash
// to a BoringCrypto *C.GO_EVP_MD.
func cryptoHashToMD(ch crypto.Hash) *C.GO_EVP_MD {
	switch ch {
	case crypto.MD5:
		return C._goboringcrypto_EVP_md5()
	case crypto.MD5SHA1:
		return C._goboringcrypto_EVP_md5_sha1()
	case crypto.SHA1:
		return C._goboringcrypto_EVP_sha1()
	case crypto.SHA224:
		return C._goboringcrypto_EVP_sha224()
	case crypto.SHA256:

	}
	if expectedSigType := signaturePKCS1v15; expectedSigType != sigType {
		t.Errorf("RSA: expected signature type %#x, got %#x", expectedSigType, sigType)
	}
	if expectedHashFunc := crypto.MD5SHA1; expectedHashFunc != hashFunc {
		t.Errorf("RSA: expected hash %#x, got %#x", expectedHashFunc, hashFunc)
	}

	sigType, hashFunc, err = legacyTypeAndHashFromPublicKey(testECDSAPrivateKey.Public())
	if err != nil {

// signature algorithm negotiation.
func legacyTypeAndHashFromPublicKey(pub crypto.PublicKey) (sigType uint8, hash crypto.Hash, err error) {
	switch pub.(type) {
	case *rsa.PublicKey:
		return signaturePKCS1v15, crypto.MD5SHA1, nil
	case *ecdsa.PublicKey:
		return signatureECDSA, crypto.SHA1, nil
	case ed25519.PublicKey:
		// RFC 8422 specifies support for Ed25519 in TLS 1.0 and 1.1,

	crypto.SHA512:    {0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40},
	crypto.MD5SHA1:   {}, // A special TLS case which doesn't use an ASN1 prefix.
	crypto.RIPEMD160: {0x30, 0x20, 0x30, 0x08, 0x06, 0x06, 0x28, 0xcf, 0x06, 0x03, 0x00, 0x31, 0x04, 0x14},
}

		{"BLAKE2b_512", Const, 9},
		{"BLAKE2s_256", Const, 9},
		{"Decrypter", Type, 5},
		{"DecrypterOpts", Type, 5},
		{"Hash", Type, 0},
		{"MD4", Const, 0},
		{"MD5", Const, 0},
		{"MD5SHA1", Const, 0},
		{"PrivateKey", Type, 0},
		{"PublicKey", Type, 2},
		{"RIPEMD160", Const, 0},
		{"RegisterHash", Func, 0},
		{"SHA1", Const, 0},
		{"SHA224", Const, 0},
		{"SHA256", Const, 0},

pkg container/ring, method (*Ring) Unlink(int) *Ring
pkg container/ring, type Ring struct
pkg container/ring, type Ring struct, Value interface{}
pkg crypto, const MD4 Hash
pkg crypto, const MD5 Hash
pkg crypto, const MD5SHA1 Hash
pkg crypto, const RIPEMD160 Hash
pkg crypto, const SHA1 Hash
pkg crypto, const SHA224 Hash
pkg crypto, const SHA256 Hash
pkg crypto, const SHA384 Hash
pkg crypto, const SHA512 Hash

pkg compress/zlib, const BestSpeed = 1
pkg compress/zlib, const DefaultCompression = -1
pkg compress/zlib, const NoCompression = 0
pkg crypto, const MD4 = 1
pkg crypto, const MD5 = 2
pkg crypto, const MD5SHA1 = 8
pkg crypto, const RIPEMD160 = 9
pkg crypto, const SHA1 = 3
pkg crypto, const SHA224 = 4
pkg crypto, const SHA256 = 5
pkg crypto, const SHA384 = 6
pkg crypto, const SHA512 = 7
pkg crypto/aes, const BlockSize = 16