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How to use md5 method of crypto Package

Best K6 code snippet using crypto.md5

prf.go

Source:prf.go

...4package tls5import (6	"crypto"7	"crypto/hmac"8	"crypto/md5"9	"crypto/sha1"10	"crypto/sha256"11	"crypto/sha512"12	"errors"13	"hash"14)15// Split a premaster secret in two as specified in RFC 4346, section 5.16func splitPreMasterSecret(secret []byte) (s1, s2 []byte) {17	s1 = secret[0 : (len(secret)+1)/2]18	s2 = secret[len(secret)/2:]19	return20}21// pHash implements the P_hash function, as defined in RFC 4346, section 5.22func pHash(result, secret, seed []byte, hash func() hash.Hash) {23	h := hmac.New(hash, secret)24	h.Write(seed)25	a := h.Sum(nil)26	j := 027	for j < len(result) {28		h.Reset()29		h.Write(a)30		h.Write(seed)31		b := h.Sum(nil)32		todo := len(b)33		if j+todo > len(result) {34			todo = len(result) - j35		}36		copy(result[j:j+todo], b)37		j += todo38		h.Reset()39		h.Write(a)40		a = h.Sum(nil)41	}42}43// prf10 implements the TLS 1.0 pseudo-random function, as defined in RFC 2246, section 5.44func prf10(result, secret, label, seed []byte) {45	hashSHA1 := sha1.New46	hashMD5 := md5.New47	labelAndSeed := make([]byte, len(label)+len(seed))48	copy(labelAndSeed, label)49	copy(labelAndSeed[len(label):], seed)50	s1, s2 := splitPreMasterSecret(secret)51	pHash(result, s1, labelAndSeed, hashMD5)52	result2 := make([]byte, len(result))53	pHash(result2, s2, labelAndSeed, hashSHA1)54	for i, b := range result2 {55		result[i] ^= b56	}57}58// prf12 implements the TLS 1.2 pseudo-random function, as defined in RFC 5246, section 5.59func prf12(hashFunc func() hash.Hash) func(result, secret, label, seed []byte) {60	return func(result, secret, label, seed []byte) {61		labelAndSeed := make([]byte, len(label)+len(seed))62		copy(labelAndSeed, label)63		copy(labelAndSeed[len(label):], seed)64		pHash(result, secret, labelAndSeed, hashFunc)65	}66}67// prf30 implements the SSL 3.0 pseudo-random function, as defined in68// www.mozilla.org/projects/security/pki/nss/ssl/draft302.txt section 6.69func prf30(result, secret, label, seed []byte) {70	hashSHA1 := sha1.New()71	hashMD5 := md5.New()72	done := 073	i := 074	// RFC5246 section 6.3 says that the largest PRF output needed is 12875	// bytes. Since no more ciphersuites will be added to SSLv3, this will76	// remain true. Each iteration gives us 16 bytes so 10 iterations will77	// be sufficient.78	var b [11]byte79	for done < len(result) {80		for j := 0; j <= i; j++ {81			b[j] = 'A' + byte(i)82		}83		hashSHA1.Reset()84		hashSHA1.Write(b[:i+1])85		hashSHA1.Write(secret)86		hashSHA1.Write(seed)87		digest := hashSHA1.Sum(nil)88		hashMD5.Reset()89		hashMD5.Write(secret)90		hashMD5.Write(digest)91		done += copy(result[done:], hashMD5.Sum(nil))92		i++93	}94}95const (96	tlsRandomLength      = 32 // Length of a random nonce in TLS 1.1.97	masterSecretLength   = 48 // Length of a master secret in TLS 1.1.98	finishedVerifyLength = 12 // Length of verify_data in a Finished message.99)100var masterSecretLabel = []byte("master secret")101var keyExpansionLabel = []byte("key expansion")102var clientFinishedLabel = []byte("client finished")103var serverFinishedLabel = []byte("server finished")104func prfAndHashForVersion(version uint16, suite *cipherSuite) (func(result, secret, label, seed []byte), crypto.Hash) {105	switch version {106	case VersionSSL30:107		return prf30, crypto.Hash(0)108	case VersionTLS10, VersionTLS11:109		return prf10, crypto.Hash(0)110	case VersionTLS12:111		if suite.flags&suiteSHA384 != 0 {112			return prf12(sha512.New384), crypto.SHA384113		}114		return prf12(sha256.New), crypto.SHA256115	default:116		panic("unknown version")117	}118}119func prfForVersion(version uint16, suite *cipherSuite) func(result, secret, label, seed []byte) {120	prf, _ := prfAndHashForVersion(version, suite)121	return prf122}123// masterFromPreMasterSecret generates the master secret from the pre-master124// secret. See http://tools.ietf.org/html/rfc5246#section-8.1125func masterFromPreMasterSecret(version uint16, suite *cipherSuite, preMasterSecret, clientRandom, serverRandom []byte) []byte {126	var seed [tlsRandomLength * 2]byte127	copy(seed[0:len(clientRandom)], clientRandom)128	copy(seed[len(clientRandom):], serverRandom)129	masterSecret := make([]byte, masterSecretLength)130	prfForVersion(version, suite)(masterSecret, preMasterSecret, masterSecretLabel, seed[0:])131	return masterSecret132}133// keysFromMasterSecret generates the connection keys from the master134// secret, given the lengths of the MAC key, cipher key and IV, as defined in135// RFC 2246, section 6.3.136func keysFromMasterSecret(version uint16, suite *cipherSuite, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) {137	var seed [tlsRandomLength * 2]byte138	copy(seed[0:len(clientRandom)], serverRandom)139	copy(seed[len(serverRandom):], clientRandom)140	n := 2*macLen + 2*keyLen + 2*ivLen141	keyMaterial := make([]byte, n)142	prfForVersion(version, suite)(keyMaterial, masterSecret, keyExpansionLabel, seed[0:])143	clientMAC = keyMaterial[:macLen]144	keyMaterial = keyMaterial[macLen:]145	serverMAC = keyMaterial[:macLen]146	keyMaterial = keyMaterial[macLen:]147	clientKey = keyMaterial[:keyLen]148	keyMaterial = keyMaterial[keyLen:]149	serverKey = keyMaterial[:keyLen]150	keyMaterial = keyMaterial[keyLen:]151	clientIV = keyMaterial[:ivLen]152	keyMaterial = keyMaterial[ivLen:]153	serverIV = keyMaterial[:ivLen]154	return155}156// lookupTLSHash looks up the corresponding crypto.Hash for a given157// TLS hash identifier.158func lookupTLSHash(hash uint8) (crypto.Hash, error) {159	switch hash {160	case hashSHA1:161		return crypto.SHA1, nil162	case hashSHA256:163		return crypto.SHA256, nil164	case hashSHA384:165		return crypto.SHA384, nil166	default:167		return 0, errors.New("tls: unsupported hash algorithm")168	}169}170func newFinishedHash(version uint16, cipherSuite *cipherSuite) finishedHash {171	var buffer []byte172	if version == VersionSSL30 || version >= VersionTLS12 {173		buffer = []byte{}174	}175	prf, hash := prfAndHashForVersion(version, cipherSuite)176	if hash != 0 {177		return finishedHash{hash.New(), hash.New(), nil, nil, buffer, version, prf}178	}179	return finishedHash{sha1.New(), sha1.New(), md5.New(), md5.New(), buffer, version, prf}180}181// A finishedHash calculates the hash of a set of handshake messages suitable182// for including in a Finished message.183type finishedHash struct {184	client hash.Hash185	server hash.Hash186	// Prior to TLS 1.2, an additional MD5 hash is required.187	clientMD5 hash.Hash188	serverMD5 hash.Hash189	// In TLS 1.2, a full buffer is sadly required.190	buffer []byte191	version uint16192	prf     func(result, secret, label, seed []byte)193}194func (h *finishedHash) Write(msg []byte) (n int, err error) {195	h.client.Write(msg)196	h.server.Write(msg)197	if h.version < VersionTLS12 {198		h.clientMD5.Write(msg)199		h.serverMD5.Write(msg)200	}201	if h.buffer != nil {202		h.buffer = append(h.buffer, msg...)203	}204	return len(msg), nil205}206func (h finishedHash) Sum() []byte {207	if h.version >= VersionTLS12 {208		return h.client.Sum(nil)209	}210	out := make([]byte, 0, md5.Size+sha1.Size)211	out = h.clientMD5.Sum(out)212	return h.client.Sum(out)213}214// finishedSum30 calculates the contents of the verify_data member of a SSLv3215// Finished message given the MD5 and SHA1 hashes of a set of handshake216// messages.217func finishedSum30(md5, sha1 hash.Hash, masterSecret []byte, magic []byte) []byte {218	md5.Write(magic)219	md5.Write(masterSecret)220	md5.Write(ssl30Pad1[:])221	md5Digest := md5.Sum(nil)222	md5.Reset()223	md5.Write(masterSecret)224	md5.Write(ssl30Pad2[:])225	md5.Write(md5Digest)226	md5Digest = md5.Sum(nil)227	sha1.Write(magic)228	sha1.Write(masterSecret)229	sha1.Write(ssl30Pad1[:40])230	sha1Digest := sha1.Sum(nil)231	sha1.Reset()232	sha1.Write(masterSecret)233	sha1.Write(ssl30Pad2[:40])234	sha1.Write(sha1Digest)235	sha1Digest = sha1.Sum(nil)236	ret := make([]byte, len(md5Digest)+len(sha1Digest))237	copy(ret, md5Digest)238	copy(ret[len(md5Digest):], sha1Digest)239	return ret240}241var ssl3ClientFinishedMagic = [4]byte{0x43, 0x4c, 0x4e, 0x54}242var ssl3ServerFinishedMagic = [4]byte{0x53, 0x52, 0x56, 0x52}243// clientSum returns the contents of the verify_data member of a client's244// Finished message.245func (h finishedHash) clientSum(masterSecret []byte) []byte {246	if h.version == VersionSSL30 {247		return finishedSum30(h.clientMD5, h.client, masterSecret, ssl3ClientFinishedMagic[:])248	}249	out := make([]byte, finishedVerifyLength)250	h.prf(out, masterSecret, clientFinishedLabel, h.Sum())251	return out252}253// serverSum returns the contents of the verify_data member of a server's254// Finished message.255func (h finishedHash) serverSum(masterSecret []byte) []byte {256	if h.version == VersionSSL30 {257		return finishedSum30(h.serverMD5, h.server, masterSecret, ssl3ServerFinishedMagic[:])258	}259	out := make([]byte, finishedVerifyLength)260	h.prf(out, masterSecret, serverFinishedLabel, h.Sum())261	return out262}263// selectClientCertSignatureAlgorithm returns a signatureAndHash to sign a264// client's CertificateVerify with, or an error if none can be found.265func (h finishedHash) selectClientCertSignatureAlgorithm(serverList []signatureAndHash, sigType uint8) (signatureAndHash, error) {266	if h.version < VersionTLS12 {267		// Nothing to negotiate before TLS 1.2.268		return signatureAndHash{signature: sigType}, nil269	}270	for _, v := range serverList {271		if v.signature == sigType && isSupportedSignatureAndHash(v, supportedSignatureAlgorithms) {272			return v, nil273		}274	}275	return signatureAndHash{}, errors.New("tls: no supported signature algorithm found for signing client certificate")276}277// hashForClientCertificate returns a digest, hash function, and TLS 1.2 hash278// id suitable for signing by a TLS client certificate.279func (h finishedHash) hashForClientCertificate(signatureAndHash signatureAndHash, masterSecret []byte) ([]byte, crypto.Hash, error) {280	if (h.version == VersionSSL30 || h.version >= VersionTLS12) && h.buffer == nil {281		panic("a handshake hash for a client-certificate was requested after discarding the handshake buffer")282	}283	if h.version == VersionSSL30 {284		if signatureAndHash.signature != signatureRSA {285			return nil, 0, errors.New("tls: unsupported signature type for client certificate")286		}287		md5Hash := md5.New()288		md5Hash.Write(h.buffer)289		sha1Hash := sha1.New()290		sha1Hash.Write(h.buffer)291		return finishedSum30(md5Hash, sha1Hash, masterSecret, nil), crypto.MD5SHA1, nil292	}293	if h.version >= VersionTLS12 {294		hashAlg, err := lookupTLSHash(signatureAndHash.hash)295		if err != nil {296			return nil, 0, err297		}298		hash := hashAlg.New()299		hash.Write(h.buffer)300		return hash.Sum(nil), hashAlg, nil301	}302	if signatureAndHash.signature == signatureECDSA {303		return h.server.Sum(nil), crypto.SHA1, nil304	}305	return h.Sum(), crypto.MD5SHA1, nil...

md5

Using AI Code Generation

1import (2func main() {3    data := []byte("Hello World")4    fmt.Printf("%x", md5.Sum(data))5}6import (7func main() {8    h := sha1.New()9    h.Write([]byte(s))10    bs := h.Sum(nil)11    fmt.Println(s)12    fmt.Printf("%x",

md5

Using AI Code Generation

1import (2func main() {3	h := md5.New()4	io.WriteString(h, "hello world")5	fmt.Printf("%x", h.Sum(nil))6}7import (8func main() {9	h := sha1.New()10	io.WriteString(h, "hello world")11	fmt.Printf("%x", h.Sum(nil))12}13import (14func main() {15	h := sha256.New()16	io.WriteString(h, "hello world")17	fmt.Printf("%x", h.Sum(nil))18}19import (20func main() {21	h := sha512.New()22	io.WriteString(h, "hello world")23	fmt.Printf("%x", h.Sum(nil))24}25import (26func main() {27	h := sha3.New256()28	io.WriteString(h, "hello world")29	fmt.Printf("%x", h.Sum(nil))30}31import (32func main() {33	h := sha3.New512()34	io.WriteString(h, "hello world")35	fmt.Printf("%x", h.Sum(nil))36}

md5

Using AI Code Generation

1import (2func main() {3	h := md5.New()4	h.Write([]byte("hello world"))5	fmt.Printf("%x", h.Sum(nil))6}7import (8func main() {9	file, err := os.Open("1.go")10	if err != nil {11		fmt.Println(err)12	}13	defer file.Close()14	h := md5.New()15	if _, err := io.Copy(h, file); err != nil {16		fmt.Println(err)17	}18	fmt.Printf("%x", h.Sum(nil))19}20import (21func main() {22	h := sha1.New()23	h.Write([]byte("hello world"))24	fmt.Printf("%x", h.Sum(nil))25}26import (27func main() {28	file, err := os.Open("1.go")29	if err != nil {30		fmt.Println(err)

md5

Using AI Code Generation

1import (2func main() {3    fmt.Println("MD5:")4    data := []byte("This is a sample string")5    fmt.Printf("%x6", md5.Sum(data))7}8import (9func main() {10    fmt.Println("SHA-1:"

md5

Using AI Code Generation

1import (2func main() {3 data := []byte(str)4 md5hash := md5.Sum(data)5 fmt.Printf("%x6}

md5

Using AI Code Generation

1import (2func main() {3 data := []byte("hello world")4 md5result := md5.Sum(data)5 fmt.Println(md5result)6}

md5

Using AI Code Generation

1import (2func main() {3 hash := md5.Sum([]byte(str))4 fmt.Printf("%x", hash)5}6import (7func main() {

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