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denoland-deno/std/util/sha256.ts

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/*
* Adapted to deno from:
*
* [js-sha256]{@link https://github.com/emn178/js-sha256}
*
* @version 0.9.0
* @author Chen, Yi-Cyuan [emn178@gmail.com]
* @copyright Chen, Yi-Cyuan 2014-2017
* @license MIT
*/
export type Message = string | number[] | ArrayBuffer | Uint8Array;
const ERROR = "input is invalid type";
const HEX_CHARS = "0123456789abcdef".split("");
const EXTRA = [-2147483648, 8388608, 32768, 128] as const;
const SHIFT = [24, 16, 8, 0] as const;
// prettier-ignore
// dprint-ignore
const K = [
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
] as const;
const blocks: number[] = [];
export class Sha256 {
#block!: number;
#blocks!: number[];
#bytes!: number;
#finalized!: boolean;
#first!: boolean;
#h0!: number;
#h1!: number;
#h2!: number;
#h3!: number;
#h4!: number;
#h5!: number;
#h6!: number;
#h7!: number;
#hashed!: boolean;
#hBytes!: number;
#is224!: boolean;
#lastByteIndex = 0;
#start!: number;
constructor(is224 = false, sharedMemory = false) {
this.init(is224, sharedMemory);
}
protected init(is224: boolean, sharedMemory: boolean): void {
if (sharedMemory) {
blocks[0] = blocks[16] = blocks[1] = blocks[2] = blocks[3] = blocks[4] = blocks[5] = blocks[6] = blocks[7] = blocks[8] = blocks[9] = blocks[10] = blocks[11] = blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
this.#blocks = blocks;
} else {
this.#blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
}
if (is224) {
this.#h0 = 0xc1059ed8;
this.#h1 = 0x367cd507;
this.#h2 = 0x3070dd17;
this.#h3 = 0xf70e5939;
this.#h4 = 0xffc00b31;
this.#h5 = 0x68581511;
this.#h6 = 0x64f98fa7;
this.#h7 = 0xbefa4fa4;
} else {
// 256
this.#h0 = 0x6a09e667;
this.#h1 = 0xbb67ae85;
this.#h2 = 0x3c6ef372;
this.#h3 = 0xa54ff53a;
this.#h4 = 0x510e527f;
this.#h5 = 0x9b05688c;
this.#h6 = 0x1f83d9ab;
this.#h7 = 0x5be0cd19;
}
this.#block = this.#start = this.#bytes = this.#hBytes = 0;
this.#finalized = this.#hashed = false;
this.#first = true;
this.#is224 = is224;
}
/** Update hash
*
* @param message The message you want to hash.
*/
update(message: Message): this {
if (this.#finalized) {
return this;
}
let msg: string | number[] | Uint8Array | undefined;
if (typeof message !== "string") {
if (typeof message === "object") {
if (message === null) {
throw new Error(ERROR);
} else if (message instanceof ArrayBuffer) {
msg = new Uint8Array(message);
} else if (!Array.isArray(message)) {
if (!ArrayBuffer.isView(message)) {
throw new Error(ERROR);
}
}
} else {
throw new Error(ERROR);
}
}
if (msg === undefined) {
msg = message as string | number[];
}
let index = 0;
const length = msg.length;
const blocks = this.#blocks;
while (index < length) {
let i: number;
if (this.#hashed) {
this.#hashed = false;
blocks[0] = this.#block;
blocks[16] = blocks[1] = blocks[2] = blocks[3] = blocks[4] = blocks[5] = blocks[6] = blocks[7] = blocks[8] = blocks[9] = blocks[10] = blocks[11] = blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
if (typeof msg !== "string") {
for (i = this.#start; index < length && i < 64; ++index) {
blocks[i >> 2] |= msg[index] << SHIFT[i++ & 3];
}
} else {
for (i = this.#start; index < length && i < 64; ++index) {
let code = msg.charCodeAt(index);
if (code < 0x80) {
blocks[i >> 2] |= code << SHIFT[i++ & 3];
} else if (code < 0x800) {
blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else if (code < 0xd800 || code >= 0xe000) {
blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else {
code =
0x10000 +
(((code & 0x3ff) << 10) | (msg.charCodeAt(++index) & 0x3ff));
blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
}
}
}
this.#lastByteIndex = i;
this.#bytes += i - this.#start;
if (i >= 64) {
this.#block = blocks[16];
this.#start = i - 64;
this.hash();
this.#hashed = true;
} else {
this.#start = i;
}
}
if (this.#bytes > 4294967295) {
this.#hBytes += (this.#bytes / 4294967296) << 0;
this.#bytes = this.#bytes % 4294967296;
}
return this;
}
protected finalize(): void {
if (this.#finalized) {
return;
}
this.#finalized = true;
const blocks = this.#blocks;
const i = this.#lastByteIndex;
blocks[16] = this.#block;
blocks[i >> 2] |= EXTRA[i & 3];
this.#block = blocks[16];
if (i >= 56) {
if (!this.#hashed) {
this.hash();
}
blocks[0] = this.#block;
blocks[16] = blocks[1] = blocks[2] = blocks[3] = blocks[4] = blocks[5] = blocks[6] = blocks[7] = blocks[8] = blocks[9] = blocks[10] = blocks[11] = blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
blocks[14] = (this.#hBytes << 3) | (this.#bytes >>> 29);
blocks[15] = this.#bytes << 3;
this.hash();
}
protected hash(): void {
let a = this.#h0;
let b = this.#h1;
let c = this.#h2;
let d = this.#h3;
let e = this.#h4;
let f = this.#h5;
let g = this.#h6;
let h = this.#h7;
const blocks = this.#blocks;
let s0: number;
let s1: number;
let maj: number;
let t1: number;
let t2: number;
let ch: number;
let ab: number;
let da: number;
let cd: number;
let bc: number;
for (let j = 16; j < 64; ++j) {
// rightrotate
t1 = blocks[j - 15];
s0 = ((t1 >>> 7) | (t1 << 25)) ^ ((t1 >>> 18) | (t1 << 14)) ^ (t1 >>> 3);
t1 = blocks[j - 2];
s1 =
((t1 >>> 17) | (t1 << 15)) ^ ((t1 >>> 19) | (t1 << 13)) ^ (t1 >>> 10);
blocks[j] = (blocks[j - 16] + s0 + blocks[j - 7] + s1) << 0;
}
bc = b & c;
for (let j = 0; j < 64; j += 4) {
if (this.#first) {
if (this.#is224) {
ab = 300032;
t1 = blocks[0] - 1413257819;
h = (t1 - 150054599) << 0;
d = (t1 + 24177077) << 0;
} else {
ab = 704751109;
t1 = blocks[0] - 210244248;
h = (t1 - 1521486534) << 0;
d = (t1 + 143694565) << 0;
}
this.#first = false;
} else {
s0 =
((a >>> 2) | (a << 30)) ^
((a >>> 13) | (a << 19)) ^
((a >>> 22) | (a << 10));
s1 =
((e >>> 6) | (e << 26)) ^
((e >>> 11) | (e << 21)) ^
((e >>> 25) | (e << 7));
ab = a & b;
maj = ab ^ (a & c) ^ bc;
ch = (e & f) ^ (~e & g);
t1 = h + s1 + ch + K[j] + blocks[j];
t2 = s0 + maj;
h = (d + t1) << 0;
d = (t1 + t2) << 0;
}
s0 =
((d >>> 2) | (d << 30)) ^
((d >>> 13) | (d << 19)) ^
((d >>> 22) | (d << 10));
s1 =
((h >>> 6) | (h << 26)) ^
((h >>> 11) | (h << 21)) ^
((h >>> 25) | (h << 7));
da = d & a;
maj = da ^ (d & b) ^ ab;
ch = (h & e) ^ (~h & f);
t1 = g + s1 + ch + K[j + 1] + blocks[j + 1];
t2 = s0 + maj;
g = (c + t1) << 0;
c = (t1 + t2) << 0;
s0 =
((c >>> 2) | (c << 30)) ^
((c >>> 13) | (c << 19)) ^
((c >>> 22) | (c << 10));
s1 =
((g >>> 6) | (g << 26)) ^
((g >>> 11) | (g << 21)) ^
((g >>> 25) | (g << 7));
cd = c & d;
maj = cd ^ (c & a) ^ da;
ch = (g & h) ^ (~g & e);
t1 = f + s1 + ch + K[j + 2] + blocks[j + 2];
t2 = s0 + maj;
f = (b + t1) << 0;
b = (t1 + t2) << 0;
s0 =
((b >>> 2) | (b << 30)) ^
((b >>> 13) | (b << 19)) ^
((b >>> 22) | (b << 10));
s1 =
((f >>> 6) | (f << 26)) ^
((f >>> 11) | (f << 21)) ^
((f >>> 25) | (f << 7));
bc = b & c;
maj = bc ^ (b & d) ^ cd;
ch = (f & g) ^ (~f & h);
t1 = e + s1 + ch + K[j + 3] + blocks[j + 3];
t2 = s0 + maj;
e = (a + t1) << 0;
a = (t1 + t2) << 0;
}
this.#h0 = (this.#h0 + a) << 0;
this.#h1 = (this.#h1 + b) << 0;
this.#h2 = (this.#h2 + c) << 0;
this.#h3 = (this.#h3 + d) << 0;
this.#h4 = (this.#h4 + e) << 0;
this.#h5 = (this.#h5 + f) << 0;
this.#h6 = (this.#h6 + g) << 0;
this.#h7 = (this.#h7 + h) << 0;
}
/** Return hash in hex string. */
hex(): string {
this.finalize();
const h0 = this.#h0;
const h1 = this.#h1;
const h2 = this.#h2;
const h3 = this.#h3;
const h4 = this.#h4;
const h5 = this.#h5;
const h6 = this.#h6;
const h7 = this.#h7;
let hex =
HEX_CHARS[(h0 >> 28) & 0x0f] +
HEX_CHARS[(h0 >> 24) & 0x0f] +
HEX_CHARS[(h0 >> 20) & 0x0f] +
HEX_CHARS[(h0 >> 16) & 0x0f] +
HEX_CHARS[(h0 >> 12) & 0x0f] +
HEX_CHARS[(h0 >> 8) & 0x0f] +
HEX_CHARS[(h0 >> 4) & 0x0f] +
HEX_CHARS[h0 & 0x0f] +
HEX_CHARS[(h1 >> 28) & 0x0f] +
HEX_CHARS[(h1 >> 24) & 0x0f] +
HEX_CHARS[(h1 >> 20) & 0x0f] +
HEX_CHARS[(h1 >> 16) & 0x0f] +
HEX_CHARS[(h1 >> 12) & 0x0f] +
HEX_CHARS[(h1 >> 8) & 0x0f] +
HEX_CHARS[(h1 >> 4) & 0x0f] +
HEX_CHARS[h1 & 0x0f] +
HEX_CHARS[(h2 >> 28) & 0x0f] +
HEX_CHARS[(h2 >> 24) & 0x0f] +
HEX_CHARS[(h2 >> 20) & 0x0f] +
HEX_CHARS[(h2 >> 16) & 0x0f] +
HEX_CHARS[(h2 >> 12) & 0x0f] +
HEX_CHARS[(h2 >> 8) & 0x0f] +
HEX_CHARS[(h2 >> 4) & 0x0f] +
HEX_CHARS[h2 & 0x0f] +
HEX_CHARS[(h3 >> 28) & 0x0f] +
HEX_CHARS[(h3 >> 24) & 0x0f] +
HEX_CHARS[(h3 >> 20) & 0x0f] +
HEX_CHARS[(h3 >> 16) & 0x0f] +
HEX_CHARS[(h3 >> 12) & 0x0f] +
HEX_CHARS[(h3 >> 8) & 0x0f] +
HEX_CHARS[(h3 >> 4) & 0x0f] +
HEX_CHARS[h3 & 0x0f] +
HEX_CHARS[(h4 >> 28) & 0x0f] +
HEX_CHARS[(h4 >> 24) & 0x0f] +
HEX_CHARS[(h4 >> 20) & 0x0f] +
HEX_CHARS[(h4 >> 16) & 0x0f] +
HEX_CHARS[(h4 >> 12) & 0x0f] +
HEX_CHARS[(h4 >> 8) & 0x0f] +
HEX_CHARS[(h4 >> 4) & 0x0f] +
HEX_CHARS[h4 & 0x0f] +
HEX_CHARS[(h5 >> 28) & 0x0f] +
HEX_CHARS[(h5 >> 24) & 0x0f] +
HEX_CHARS[(h5 >> 20) & 0x0f] +
HEX_CHARS[(h5 >> 16) & 0x0f] +
HEX_CHARS[(h5 >> 12) & 0x0f] +
HEX_CHARS[(h5 >> 8) & 0x0f] +
HEX_CHARS[(h5 >> 4) & 0x0f] +
HEX_CHARS[h5 & 0x0f] +
HEX_CHARS[(h6 >> 28) & 0x0f] +
HEX_CHARS[(h6 >> 24) & 0x0f] +
HEX_CHARS[(h6 >> 20) & 0x0f] +
HEX_CHARS[(h6 >> 16) & 0x0f] +
HEX_CHARS[(h6 >> 12) & 0x0f] +
HEX_CHARS[(h6 >> 8) & 0x0f] +
HEX_CHARS[(h6 >> 4) & 0x0f] +
HEX_CHARS[h6 & 0x0f];
if (!this.#is224) {
hex +=
HEX_CHARS[(h7 >> 28) & 0x0f] +
HEX_CHARS[(h7 >> 24) & 0x0f] +
HEX_CHARS[(h7 >> 20) & 0x0f] +
HEX_CHARS[(h7 >> 16) & 0x0f] +
HEX_CHARS[(h7 >> 12) & 0x0f] +
HEX_CHARS[(h7 >> 8) & 0x0f] +
HEX_CHARS[(h7 >> 4) & 0x0f] +
HEX_CHARS[h7 & 0x0f];
}
return hex;
}
/** Return hash in hex string. */
toString(): string {
return this.hex();
}
/** Return hash in integer array. */
digest(): number[] {
this.finalize();
const h0 = this.#h0;
const h1 = this.#h1;
const h2 = this.#h2;
const h3 = this.#h3;
const h4 = this.#h4;
const h5 = this.#h5;
const h6 = this.#h6;
const h7 = this.#h7;
const arr = [
(h0 >> 24) & 0xff,
(h0 >> 16) & 0xff,
(h0 >> 8) & 0xff,
h0 & 0xff,
(h1 >> 24) & 0xff,
(h1 >> 16) & 0xff,
(h1 >> 8) & 0xff,
h1 & 0xff,
(h2 >> 24) & 0xff,
(h2 >> 16) & 0xff,
(h2 >> 8) & 0xff,
h2 & 0xff,
(h3 >> 24) & 0xff,
(h3 >> 16) & 0xff,
(h3 >> 8) & 0xff,
h3 & 0xff,
(h4 >> 24) & 0xff,
(h4 >> 16) & 0xff,
(h4 >> 8) & 0xff,
h4 & 0xff,
(h5 >> 24) & 0xff,
(h5 >> 16) & 0xff,
(h5 >> 8) & 0xff,
h5 & 0xff,
(h6 >> 24) & 0xff,
(h6 >> 16) & 0xff,
(h6 >> 8) & 0xff,
h6 & 0xff,
];
if (!this.#is224) {
arr.push(
(h7 >> 24) & 0xff,
(h7 >> 16) & 0xff,
(h7 >> 8) & 0xff,
h7 & 0xff
);
}
return arr;
}
/** Return hash in integer array. */
array(): number[] {
return this.digest();
}
/** Return hash in ArrayBuffer. */
arrayBuffer(): ArrayBuffer {
this.finalize();
const buffer = new ArrayBuffer(this.#is224 ? 28 : 32);
const dataView = new DataView(buffer);
dataView.setUint32(0, this.#h0);
dataView.setUint32(4, this.#h1);
dataView.setUint32(8, this.#h2);
dataView.setUint32(12, this.#h3);
dataView.setUint32(16, this.#h4);
dataView.setUint32(20, this.#h5);
dataView.setUint32(24, this.#h6);
if (!this.#is224) {
dataView.setUint32(28, this.#h7);
}
return buffer;
}
}
export class HmacSha256 extends Sha256 {
#inner: boolean;
#is224: boolean;
#oKeyPad: number[];
#sharedMemory: boolean;
constructor(secretKey: Message, is224 = false, sharedMemory = false) {
super(is224, sharedMemory);
let key: number[] | Uint8Array | undefined;
if (typeof secretKey === "string") {
const bytes: number[] = [];
const length = secretKey.length;
let index = 0;
for (let i = 0; i < length; ++i) {
let code = secretKey.charCodeAt(i);
if (code < 0x80) {
bytes[index++] = code;
} else if (code < 0x800) {
bytes[index++] = 0xc0 | (code >> 6);
bytes[index++] = 0x80 | (code & 0x3f);
} else if (code < 0xd800 || code >= 0xe000) {
bytes[index++] = 0xe0 | (code >> 12);
bytes[index++] = 0x80 | ((code >> 6) & 0x3f);
bytes[index++] = 0x80 | (code & 0x3f);
} else {
code =
0x10000 +
(((code & 0x3ff) << 10) | (secretKey.charCodeAt(++i) & 0x3ff));
bytes[index++] = 0xf0 | (code >> 18);
bytes[index++] = 0x80 | ((code >> 12) & 0x3f);
bytes[index++] = 0x80 | ((code >> 6) & 0x3f);
bytes[index++] = 0x80 | (code & 0x3f);
}
}
key = bytes;
} else {
if (typeof secretKey === "object") {
if (secretKey === null) {
throw new Error(ERROR);
} else if (secretKey instanceof ArrayBuffer) {
key = new Uint8Array(secretKey);
} else if (!Array.isArray(secretKey)) {
if (!ArrayBuffer.isView(secretKey)) {
throw new Error(ERROR);
}
}
} else {
throw new Error(ERROR);
}
}
if (key === undefined) {
key = secretKey as number[] | Uint8Array;
}
if (key.length > 64) {
key = new Sha256(is224, true).update(key).array();
}
const oKeyPad: number[] = [];
const iKeyPad: number[] = [];
for (let i = 0; i < 64; ++i) {
const b = key[i] || 0;
oKeyPad[i] = 0x5c ^ b;
iKeyPad[i] = 0x36 ^ b;
}
this.update(iKeyPad);
this.#oKeyPad = oKeyPad;
this.#inner = true;
this.#is224 = is224;
this.#sharedMemory = sharedMemory;
}
protected finalize(): void {
super.finalize();
if (this.#inner) {
this.#inner = false;
const innerHash = this.array();
super.init(this.#is224, this.#sharedMemory);
this.update(this.#oKeyPad);
this.update(innerHash);
super.finalize();
}
}
}
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