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denoland-deno/std/hash/sha1.ts
Andrey Trebler 2d5abbe909
fix(std/hash): SHA1 hash of Uint8Array (#5086)
2020-05-18 00:04:11 +02:00

382 lines
11 KiB
TypeScript
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/*
* [js-sha1]{@link https://github.com/emn178/js-sha1}
*
* @version 0.6.0
* @author Chen, Yi-Cyuan [emn178@gmail.com]
* @copyright Chen, Yi-Cyuan 2014-2017
* @license MIT
*/
export type Message = string | number[] | ArrayBuffer;
const HEX_CHARS = "0123456789abcdef".split("");
const EXTRA = [-2147483648, 8388608, 32768, 128] as const;
const SHIFT = [24, 16, 8, 0] as const;
const blocks: number[] = [];
export class Sha1 {
#blocks!: number[];
#block!: number;
#start!: number;
#bytes!: number;
#hBytes!: number;
#finalized!: boolean;
#hashed!: boolean;
#h0 = 0x67452301;
#h1 = 0xefcdab89;
#h2 = 0x98badcfe;
#h3 = 0x10325476;
#h4 = 0xc3d2e1f0;
#lastByteIndex = 0;
constructor(sharedMemory = false) {
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];
}
this.#h0 = 0x67452301;
this.#h1 = 0xefcdab89;
this.#h2 = 0x98badcfe;
this.#h3 = 0x10325476;
this.#h4 = 0xc3d2e1f0;
this.#block = this.#start = this.#bytes = this.#hBytes = 0;
this.#finalized = this.#hashed = false;
}
update(message: Message): this {
if (this.#finalized) {
return this;
}
let msg: string | number[] | Uint8Array | undefined;
if (message instanceof ArrayBuffer) {
msg = new Uint8Array(message);
} else {
msg = message;
}
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 >>> 0;
}
return this;
}
private 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();
}
private hash(): void {
let a = this.#h0;
let b = this.#h1;
let c = this.#h2;
let d = this.#h3;
let e = this.#h4;
let f: number;
let j: number;
let t: number;
const blocks = this.#blocks;
for (j = 16; j < 80; ++j) {
t = blocks[j - 3] ^ blocks[j - 8] ^ blocks[j - 14] ^ blocks[j - 16];
blocks[j] = (t << 1) | (t >>> 31);
}
for (j = 0; j < 20; j += 5) {
f = (b & c) | (~b & d);
t = (a << 5) | (a >>> 27);
e = (t + f + e + 1518500249 + blocks[j]) >>> 0;
b = (b << 30) | (b >>> 2);
f = (a & b) | (~a & c);
t = (e << 5) | (e >>> 27);
d = (t + f + d + 1518500249 + blocks[j + 1]) >>> 0;
a = (a << 30) | (a >>> 2);
f = (e & a) | (~e & b);
t = (d << 5) | (d >>> 27);
c = (t + f + c + 1518500249 + blocks[j + 2]) >>> 0;
e = (e << 30) | (e >>> 2);
f = (d & e) | (~d & a);
t = (c << 5) | (c >>> 27);
b = (t + f + b + 1518500249 + blocks[j + 3]) >>> 0;
d = (d << 30) | (d >>> 2);
f = (c & d) | (~c & e);
t = (b << 5) | (b >>> 27);
a = (t + f + a + 1518500249 + blocks[j + 4]) >>> 0;
c = (c << 30) | (c >>> 2);
}
for (; j < 40; j += 5) {
f = b ^ c ^ d;
t = (a << 5) | (a >>> 27);
e = (t + f + e + 1859775393 + blocks[j]) >>> 0;
b = (b << 30) | (b >>> 2);
f = a ^ b ^ c;
t = (e << 5) | (e >>> 27);
d = (t + f + d + 1859775393 + blocks[j + 1]) >>> 0;
a = (a << 30) | (a >>> 2);
f = e ^ a ^ b;
t = (d << 5) | (d >>> 27);
c = (t + f + c + 1859775393 + blocks[j + 2]) >>> 0;
e = (e << 30) | (e >>> 2);
f = d ^ e ^ a;
t = (c << 5) | (c >>> 27);
b = (t + f + b + 1859775393 + blocks[j + 3]) >>> 0;
d = (d << 30) | (d >>> 2);
f = c ^ d ^ e;
t = (b << 5) | (b >>> 27);
a = (t + f + a + 1859775393 + blocks[j + 4]) >>> 0;
c = (c << 30) | (c >>> 2);
}
for (; j < 60; j += 5) {
f = (b & c) | (b & d) | (c & d);
t = (a << 5) | (a >>> 27);
e = (t + f + e - 1894007588 + blocks[j]) >>> 0;
b = (b << 30) | (b >>> 2);
f = (a & b) | (a & c) | (b & c);
t = (e << 5) | (e >>> 27);
d = (t + f + d - 1894007588 + blocks[j + 1]) >>> 0;
a = (a << 30) | (a >>> 2);
f = (e & a) | (e & b) | (a & b);
t = (d << 5) | (d >>> 27);
c = (t + f + c - 1894007588 + blocks[j + 2]) >>> 0;
e = (e << 30) | (e >>> 2);
f = (d & e) | (d & a) | (e & a);
t = (c << 5) | (c >>> 27);
b = (t + f + b - 1894007588 + blocks[j + 3]) >>> 0;
d = (d << 30) | (d >>> 2);
f = (c & d) | (c & e) | (d & e);
t = (b << 5) | (b >>> 27);
a = (t + f + a - 1894007588 + blocks[j + 4]) >>> 0;
c = (c << 30) | (c >>> 2);
}
for (; j < 80; j += 5) {
f = b ^ c ^ d;
t = (a << 5) | (a >>> 27);
e = (t + f + e - 899497514 + blocks[j]) >>> 0;
b = (b << 30) | (b >>> 2);
f = a ^ b ^ c;
t = (e << 5) | (e >>> 27);
d = (t + f + d - 899497514 + blocks[j + 1]) >>> 0;
a = (a << 30) | (a >>> 2);
f = e ^ a ^ b;
t = (d << 5) | (d >>> 27);
c = (t + f + c - 899497514 + blocks[j + 2]) >>> 0;
e = (e << 30) | (e >>> 2);
f = d ^ e ^ a;
t = (c << 5) | (c >>> 27);
b = (t + f + b - 899497514 + blocks[j + 3]) >>> 0;
d = (d << 30) | (d >>> 2);
f = c ^ d ^ e;
t = (b << 5) | (b >>> 27);
a = (t + f + a - 899497514 + blocks[j + 4]) >>> 0;
c = (c << 30) | (c >>> 2);
}
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;
}
hex(): string {
this.finalize();
const h0 = this.#h0;
const h1 = this.#h1;
const h2 = this.#h2;
const h3 = this.#h3;
const h4 = this.#h4;
return (
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]
);
}
toString(): string {
return this.hex();
}
digest(): number[] {
this.finalize();
const h0 = this.#h0;
const h1 = this.#h1;
const h2 = this.#h2;
const h3 = this.#h3;
const h4 = this.#h4;
return [
(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,
];
}
array(): number[] {
return this.digest();
}
arrayBuffer(): ArrayBuffer {
this.finalize();
const buffer = new ArrayBuffer(20);
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);
return buffer;
}
}
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