How to use Digest method of crypto Package

Best K6 code snippet using crypto.Digest

sha512.go

Source:sha512.go Github

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1// Copyright 2009 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4// Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/2565// hash algorithms as defined in FIPS 180-4.6package sha5127import (8 "crypto"9 "hash"10)11func init() {12 crypto.RegisterHash(crypto.SHA384, New384)13 crypto.RegisterHash(crypto.SHA512, New)14 crypto.RegisterHash(crypto.SHA512_224, New512_224)15 crypto.RegisterHash(crypto.SHA512_256, New512_256)16}17const (18 // Size is the size, in bytes, of a SHA-512 checksum.19 Size = 6420 // Size224 is the size, in bytes, of a SHA-512/224 checksum.21 Size224 = 2822 // Size256 is the size, in bytes, of a SHA-512/256 checksum.23 Size256 = 3224 // Size384 is the size, in bytes, of a SHA-384 checksum.25 Size384 = 4826 // BlockSize is the block size, in bytes, of the SHA-512/224,27 // SHA-512/256, SHA-384 and SHA-512 hash functions.28 BlockSize = 12829)30const (31 chunk = 12832 init0 = 0x6a09e667f3bcc90833 init1 = 0xbb67ae8584caa73b34 init2 = 0x3c6ef372fe94f82b35 init3 = 0xa54ff53a5f1d36f136 init4 = 0x510e527fade682d137 init5 = 0x9b05688c2b3e6c1f38 init6 = 0x1f83d9abfb41bd6b39 init7 = 0x5be0cd19137e217940 init0_224 = 0x8c3d37c819544da241 init1_224 = 0x73e1996689dcd4d642 init2_224 = 0x1dfab7ae32ff9c8243 init3_224 = 0x679dd514582f9fcf44 init4_224 = 0x0f6d2b697bd44da845 init5_224 = 0x77e36f7304c4894246 init6_224 = 0x3f9d85a86a1d36c847 init7_224 = 0x1112e6ad91d692a148 init0_256 = 0x22312194fc2bf72c49 init1_256 = 0x9f555fa3c84c64c250 init2_256 = 0x2393b86b6f53b15151 init3_256 = 0x963877195940eabd52 init4_256 = 0x96283ee2a88effe353 init5_256 = 0xbe5e1e255386399254 init6_256 = 0x2b0199fc2c85b8aa55 init7_256 = 0x0eb72ddc81c52ca256 init0_384 = 0xcbbb9d5dc1059ed857 init1_384 = 0x629a292a367cd50758 init2_384 = 0x9159015a3070dd1759 init3_384 = 0x152fecd8f70e593960 init4_384 = 0x67332667ffc00b3161 init5_384 = 0x8eb44a876858151162 init6_384 = 0xdb0c2e0d64f98fa763 init7_384 = 0x47b5481dbefa4fa464)65// digest represents the partial evaluation of a checksum.66type digest struct {67 h [8]uint6468 x [chunk]byte69 nx int70 len uint6471 function crypto.Hash72}73func (d *digest) Reset() {74 switch d.function {75 case crypto.SHA384:76 d.h[0] = init0_38477 d.h[1] = init1_38478 d.h[2] = init2_38479 d.h[3] = init3_38480 d.h[4] = init4_38481 d.h[5] = init5_38482 d.h[6] = init6_38483 d.h[7] = init7_38484 case crypto.SHA512_224:85 d.h[0] = init0_22486 d.h[1] = init1_22487 d.h[2] = init2_22488 d.h[3] = init3_22489 d.h[4] = init4_22490 d.h[5] = init5_22491 d.h[6] = init6_22492 d.h[7] = init7_22493 case crypto.SHA512_256:94 d.h[0] = init0_25695 d.h[1] = init1_25696 d.h[2] = init2_25697 d.h[3] = init3_25698 d.h[4] = init4_25699 d.h[5] = init5_256100 d.h[6] = init6_256101 d.h[7] = init7_256102 default:103 d.h[0] = init0104 d.h[1] = init1105 d.h[2] = init2106 d.h[3] = init3107 d.h[4] = init4108 d.h[5] = init5109 d.h[6] = init6110 d.h[7] = init7111 }112 d.nx = 0113 d.len = 0114}115// New returns a new hash.Hash computing the SHA-512 checksum.116func New() hash.Hash {117 d := &digest{function: crypto.SHA512}118 d.Reset()119 return d120}121// New512_224 returns a new hash.Hash computing the SHA-512/224 checksum.122func New512_224() hash.Hash {123 d := &digest{function: crypto.SHA512_224}124 d.Reset()125 return d126}127// New512_256 returns a new hash.Hash computing the SHA-512/256 checksum.128func New512_256() hash.Hash {129 d := &digest{function: crypto.SHA512_256}130 d.Reset()131 return d132}133// New384 returns a new hash.Hash computing the SHA-384 checksum.134func New384() hash.Hash {135 d := &digest{function: crypto.SHA384}136 d.Reset()137 return d138}139func (d *digest) Size() int {140 switch d.function {141 case crypto.SHA512_224:142 return Size224143 case crypto.SHA512_256:144 return Size256145 case crypto.SHA384:146 return Size384147 default:148 return Size149 }150}151func (d *digest) BlockSize() int { return BlockSize }152func (d *digest) Write(p []byte) (nn int, err error) {153 nn = len(p)154 d.len += uint64(nn)155 if d.nx > 0 {156 n := copy(d.x[d.nx:], p)157 d.nx += n158 if d.nx == chunk {159 block(d, d.x[:])160 d.nx = 0161 }162 p = p[n:]163 }164 if len(p) >= chunk {165 n := len(p) &^ (chunk - 1)166 block(d, p[:n])167 p = p[n:]168 }169 if len(p) > 0 {170 d.nx = copy(d.x[:], p)171 }172 return173}174func (d0 *digest) Sum(in []byte) []byte {175 // Make a copy of d0 so that caller can keep writing and summing.176 d := new(digest)177 *d = *d0178 hash := d.checkSum()179 switch d.function {180 case crypto.SHA384:181 return append(in, hash[:Size384]...)182 case crypto.SHA512_224:183 return append(in, hash[:Size224]...)184 case crypto.SHA512_256:185 return append(in, hash[:Size256]...)186 default:187 return append(in, hash[:]...)188 }189}190func (d *digest) checkSum() [Size]byte {191 // Padding. Add a 1 bit and 0 bits until 112 bytes mod 128.192 len := d.len193 var tmp [128]byte194 tmp[0] = 0x80195 if len%128 < 112 {196 d.Write(tmp[0 : 112-len%128])197 } else {198 d.Write(tmp[0 : 128+112-len%128])199 }200 // Length in bits.201 len <<= 3202 for i := uint(0); i < 16; i++ {203 tmp[i] = byte(len >> (120 - 8*i))204 }205 d.Write(tmp[0:16])206 if d.nx != 0 {207 panic("d.nx != 0")208 }209 h := d.h[:]210 if d.function == crypto.SHA384 {211 h = d.h[:6]212 }213 var digest [Size]byte214 for i, s := range h {215 digest[i*8] = byte(s >> 56)216 digest[i*8+1] = byte(s >> 48)217 digest[i*8+2] = byte(s >> 40)218 digest[i*8+3] = byte(s >> 32)219 digest[i*8+4] = byte(s >> 24)220 digest[i*8+5] = byte(s >> 16)221 digest[i*8+6] = byte(s >> 8)222 digest[i*8+7] = byte(s)223 }224 return digest225}226// Sum512 returns the SHA512 checksum of the data.227func Sum512(data []byte) [Size]byte {228 d := digest{function: crypto.SHA512}229 d.Reset()230 d.Write(data)231 return d.checkSum()232}233// Sum384 returns the SHA384 checksum of the data.234func Sum384(data []byte) (sum384 [Size384]byte) {235 d := digest{function: crypto.SHA384}236 d.Reset()237 d.Write(data)238 sum := d.checkSum()239 copy(sum384[:], sum[:Size384])240 return241}242// Sum512_224 returns the Sum512/224 checksum of the data.243func Sum512_224(data []byte) (sum224 [Size224]byte) {244 d := digest{function: crypto.SHA512_224}245 d.Reset()246 d.Write(data)247 sum := d.checkSum()248 copy(sum224[:], sum[:Size224])249 return250}251// Sum512_256 returns the Sum512/256 checksum of the data.252func Sum512_256(data []byte) (sum256 [Size256]byte) {253 d := digest{function: crypto.SHA512_256}254 d.Reset()255 d.Write(data)256 sum := d.checkSum()257 copy(sum256[:], sum[:Size256])258 return259}...

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kms-signer.go

Source:kms-signer.go Github

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...15// KMSSigner is an interface for an opaque private key that can be used for16// signing operations. For example, an RSA key kept in a hardware module.17type KMSSigner interface {18 crypto.Signer19 Digest() crypto.Hash20}21// kmsSigner is a key22type kmsSigner struct {23 ctx context.Context24 client *cloudkms.KeyManagementClient25 keyName string26 publicKey crypto.PublicKey27 digest crypto.Hash28 forceDigest bool29}30// CryptoHashLookup maps crypto.hash to string name31var CryptoHashLookup = map[crypto.Hash]string{32 crypto.MD4: "MD4",33 crypto.SHA1: "SHA1",34 crypto.SHA224: "SHA224",35 crypto.SHA256: "SHA256",36 crypto.SHA384: "SHA384",37 crypto.SHA512: "SHA512",38 crypto.MD5SHA1: "MD5SHA1",39 crypto.RIPEMD160: "RIPEMD160",40 crypto.SHA3_224: "SHA3_224",41 crypto.SHA3_256: "SHA3_256",42 crypto.SHA3_384: "SHA3_384",43 crypto.SHA3_512: "SHA3_512",44 crypto.SHA512_224: "SHA512_224",45 crypto.SHA512_256: "SHA512_256",46 crypto.BLAKE2s_256: "BLAKE2s_256",47 crypto.BLAKE2b_256: "BLAKE2b_256",48 crypto.BLAKE2b_384: "BLAKE2b_384",49 crypto.BLAKE2b_512: "BLAKE2b_512",50}51// NewKMSSigner creates a new instance52func NewKMSSigner(keyName string, forceDigest bool) (signer KMSSigner, err error) {53 // Create the KMS client.54 ctx := context.Background()55 client, err := cloudkms.NewKeyManagementClient(ctx)56 if err != nil {57 log.Fatal(err)58 }59 // Retrieve the public key from KMS.60 response, err := client.GetPublicKey(ctx, &kmspb.GetPublicKeyRequest{Name: keyName})61 if err != nil {62 return nil, fmt.Errorf("GetPublicKey: %v", err)63 }64 // Parse the key.65 block, _ := pem.Decode([]byte(response.Pem))66 abstractKey, err := x509.ParsePKIXPublicKey(block.Bytes)67 if err != nil {68 return nil, fmt.Errorf("x509.ParsePKIXPublicKey: %+v", err)69 }70 var publicKey crypto.PublicKey71 var digestType crypto.Hash72 switch abstractKey.(type) {73 case *rsa.PublicKey:74 publicKey = abstractKey.(*rsa.PublicKey)75 keySize := publicKey.(*rsa.PublicKey).Size() * 876 switch keySize {77 case 2048:78 fallthrough79 case 3072:80 digestType = crypto.SHA25681 case 4096:82 digestType = crypto.SHA51283 default:84 return nil, fmt.Errorf("unsupported RSA key size %v", keySize)85 }86 case *ecdsa.PublicKey:87 publicKey = abstractKey.(*ecdsa.PublicKey)88 bitSize := publicKey.(*ecdsa.PublicKey).Curve.Params().BitSize89 switch bitSize {90 case 256:91 digestType = crypto.SHA25692 case 384:93 digestType = crypto.SHA38494 default:95 return nil, fmt.Errorf("unsupported ECDSA bit size %v", bitSize)96 }97 default:98 return nil, fmt.Errorf("key %q is not supported format", keyName)99 }100 return &kmsSigner{101 keyName: keyName,102 ctx: ctx,103 client: client,104 publicKey: publicKey,105 digest: digestType,106 forceDigest: forceDigest,107 }, nil108}109// Sign with key110func (kmss *kmsSigner) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) (signature []byte, err error) {111 // Check opts to see if the digest algo matches112 if !kmss.forceDigest && opts.HashFunc() != kmss.digest {113 return nil, fmt.Errorf("Requested hash: %v, supported hash %v", CryptoHashLookup[opts.HashFunc()], CryptoHashLookup[kmss.digest])114 }115 // Build the request.116 var digestPayload kmspb.Digest117 switch kmss.digest {118 case crypto.SHA256:119 digestPayload = kmspb.Digest{120 Digest: &kmspb.Digest_Sha256{121 Sha256: digest,122 },123 }124 case crypto.SHA384:125 digestPayload = kmspb.Digest{126 Digest: &kmspb.Digest_Sha384{127 Sha384: digest,128 },129 }130 case crypto.SHA512:131 digestPayload = kmspb.Digest{132 Digest: &kmspb.Digest_Sha512{133 Sha512: digest,134 },135 }136 }137 req := &kmspb.AsymmetricSignRequest{138 Name: kmss.keyName,139 Digest: &digestPayload,140 }141 // Query the API.142 res, err := kmss.client.AsymmetricSign(kmss.ctx, req)143 if err != nil {144 return nil, fmt.Errorf("%v\nrequested hash: %v", err, CryptoHashLookup[opts.HashFunc()])145 }146 return res.Signature, nil147}148// Public fetches public key149func (kmss *kmsSigner) Public() crypto.PublicKey {150 return kmss.publicKey151}152// Digest returns hash algo used for this key153func (kmss *kmsSigner) Digest() crypto.Hash {154 return kmss.digest155}...

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Digest

Using AI Code Generation

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1import (2func main() {3 file, err := os.Open("1.go")4 if err != nil {5 fmt.Println(err)6 }7 defer file.Close()8 hash := md5.New()9 if _, err := io.Copy(hash, file); err != nil {10 fmt.Println(err)11 }12 hashInBytes := hash.Sum(nil)[:16]13 fmt.Printf("%x", hashInBytes)14}15import (16func main() {17 data := []byte("Hello World")18 fmt.Printf("%x", md5.Sum(data))19}20import (21func main() {22 file, err := os.Open("1.go")23 if err != nil {24 fmt.Println(err)25 }26 defer file.Close()27 hash := md5.New()28 if _, err := io.Copy(hash, file); err != nil {29 fmt.Println(err)30 }31 hashInBytes := hash.Sum(nil)[:16]32 fmt.Printf("%x", hashInBytes)33}34import (35func main() {36 data := []byte("Hello World")37 fmt.Printf("%x", md5.Sum(data))38}39import (40func main() {41 file, err := os.Open("1.go")

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Digest

Using AI Code Generation

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1import (2func main() {3 hash := sha1.New()4 hash.Write([]byte(input))5 sha1HashInBytes := hash.Sum(nil)6 sha1HashInString := hex.EncodeToString(sha1HashInBytes)7 fmt.Println("SHA1: ", sha1HashInString)8 hash = sha256.New()9 hash.Write([]byte(input))10 sha256HashInBytes := hash.Sum(nil)11 sha256HashInString := hex.EncodeToString(sha256HashInBytes)12 fmt.Println("SHA256: ", sha256HashInString)13 hash = sha512.New()14 hash.Write([]byte(input))15 sha512HashInBytes := hash.Sum(nil)16 sha512HashInString := hex.EncodeToString(sha512HashInBytes)17 fmt.Println("SHA512: ", sha512HashInString)18 hash = md5.New()19 hash.Write([]byte(input))20 md5HashInBytes := hash.Sum(nil)21 md5HashInString := hex.EncodeToString(md5HashInBytes)22 fmt.Println("MD5: ", md5HashInString)23 hash = sha1.New()24 hash.Write([]byte(input))25 sha1HashInBytes = hash.Sum(nil)26 sha1HashInString = hex.EncodeToString(sha1HashInBytes)27 fmt.Println("SHA1: ", sha1HashInString)28 hash = sha256.New()29 hash.Write([]byte(input))30 sha256HashInBytes = hash.Sum(nil)31 sha256HashInString = hex.EncodeToString(sha256HashInBytes)32 fmt.Println("SHA256: ", sha256HashInString)33 hash = sha512.New()34 hash.Write([]byte(input))35 sha512HashInBytes = hash.Sum(nil)

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Digest

Using AI Code Generation

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1import (2func main() {3h := sha256.New()4io.WriteString(h, str)5fmt.Printf("%x", h.Sum(nil))6}

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Digest

Using AI Code Generation

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1import (2func main() {3 file, err := os.Open("1.go")4 if err != nil {5 panic(err)6 }7 defer file.Close()8 hash := md5.New()9 if _, err := io.Copy(hash, file); err != nil {10 panic(err)11 }12 hashInBytes := hash.Sum(nil)[:16]

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Digest

Using AI Code Generation

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1import (2func main() {3 h := sha256.New()4 h.Write([]byte("Hello World!"))5 bs := h.Sum(nil)6 fmt.Println(bs)7}8import (9func main() {10 h := md5.New()11 h.Write([]byte("Hello World!"))12 bs := h.Sum(nil)13 fmt.Println(bs)14}15import (16func main() {17 h := sha1.New()18 h.Write([]byte("Hello World!"))19 bs := h.Sum(nil)20 fmt.Println(bs)21}

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Digest

Using AI Code Generation

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1import (2func main() {3 fmt.Println("Unhashed String: ", str)4 hash := md5.New()5 io.WriteString(hash, str)6 fmt.Println("Hashed String: ", hash.Sum(nil))7}8import (9func main() {10 fmt.Println("Unhashed String: ", str)11 hash := sha1.New()12 hash.Write([]byte(str))13 fmt.Println("Hashed String: ", hash.Sum(nil))14}

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Digest

Using AI Code Generation

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1import (2func main() {3 h := sha256.New()4 h.Write([]byte("Hello World"))5 bs := h.Sum(nil)6 fmt.Println(bs)7}8import (9func main() {10 h := sha256.New()11 bs := h.Sum([]byte("Hello World"))12 fmt.Println(bs)13}14import (15func main() {16 bs := sha256.Sum256([]byte("Hello World"))17 fmt.Println(bs)18}19import (20func main() {21 bs := sha256.Sum224([]byte("Hello World"))22 fmt.Println(bs)23}

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Digest

Using AI Code Generation

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1import (2func main() {3 data := []byte("Hello World")4 hash := md5.Sum(data)5 fmt.Printf("%x", hash)6}7import (8func main() {9 data := []byte("Hello World")10 hash := md5.Sum(data)11 fmt.Printf("%x12 str := hex.EncodeToString(hash[:])13 fmt.Println(str)14}15import (16func main() {17 data := []byte("Hello World")18 hash := md5.Sum(data)19 fmt.Printf("%x20 str := hex.EncodeToString(hash[:])21 fmt.Println(str)

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