mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
374 lines
10 KiB
TypeScript
374 lines
10 KiB
TypeScript
/*
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* [js-sha1]{@link https://github.com/emn178/js-sha1}
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*
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* @version 0.6.0
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* @author Chen, Yi-Cyuan [emn178@gmail.com]
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* @copyright Chen, Yi-Cyuan 2014-2017
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* @license MIT
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*/
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/*jslint bitwise: true */
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const HEX_CHARS = "0123456789abcdef".split("");
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const EXTRA = Uint32Array.of(-2147483648, 8388608, 32768, 128);
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const SHIFT = Uint32Array.of(24, 16, 8, 0);
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const blocks = new Uint32Array(80);
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export class Sha1 {
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private _blocks: Uint32Array;
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private _block: number;
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private _start: number;
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private _bytes: number;
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private _hBytes: number;
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private _finalized: boolean;
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private _hashed: boolean;
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private _h0 = 0x67452301;
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private _h1 = 0xefcdab89;
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private _h2 = 0x98badcfe;
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private _h3 = 0x10325476;
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private _h4 = 0xc3d2e1f0;
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private _lastByteIndex = 0;
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constructor(sharedMemory = false) {
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if (sharedMemory) {
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this._blocks = blocks.fill(0, 0, 17);
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} else {
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this._blocks = new Uint32Array(80);
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}
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this._h0 = 0x67452301;
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this._h1 = 0xefcdab89;
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this._h2 = 0x98badcfe;
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this._h3 = 0x10325476;
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this._h4 = 0xc3d2e1f0;
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this._block = this._start = this._bytes = this._hBytes = 0;
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this._finalized = this._hashed = false;
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}
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update(data: string | ArrayBuffer | ArrayBufferView): void {
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if (this._finalized) {
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return;
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}
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let notString = true;
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let message;
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if (data instanceof ArrayBuffer) {
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message = new Uint8Array(data);
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} else if (ArrayBuffer.isView(data)) {
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message = new Uint8Array(data.buffer);
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} else {
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notString = false;
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message = String(data);
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}
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let code;
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let index = 0;
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let i;
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const start = this._start;
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const length = message.length || 0;
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const blocks = this._blocks;
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while (index < length) {
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if (this._hashed) {
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this._hashed = false;
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blocks[0] = this._block;
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blocks.fill(0, 1, 17);
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}
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if (notString) {
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for (i = start; index < length && i < 64; ++index) {
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blocks[i >> 2] |= (message[index] as number) << SHIFT[i++ & 3];
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}
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} else {
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for (i = start; index < length && i < 64; ++index) {
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code = (message as string).charCodeAt(index);
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if (code < 0x80) {
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blocks[i >> 2] |= code << SHIFT[i++ & 3];
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} else if (code < 0x800) {
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blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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} else if (code < 0xd800 || code >= 0xe000) {
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blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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} else {
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code =
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0x10000 +
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(((code & 0x3ff) << 10) |
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((message as string).charCodeAt(++index) & 0x3ff));
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blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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}
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}
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}
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this._lastByteIndex = i;
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this._bytes += i - start;
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if (i >= 64) {
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this._block = blocks[16];
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this._start = i - 64;
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this.hash();
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this._hashed = true;
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} else {
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this._start = i;
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}
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}
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if (this._bytes > 4294967295) {
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this._hBytes += (this._bytes / 4294967296) >>> 0;
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this._bytes = this._bytes >>> 0;
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}
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}
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finalize(): void {
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if (this._finalized) {
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return;
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}
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this._finalized = true;
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const blocks = this._blocks;
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const i = this._lastByteIndex;
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blocks[16] = this._block;
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blocks[i >> 2] |= EXTRA[i & 3];
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this._block = blocks[16];
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if (i >= 56) {
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if (!this._hashed) {
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this.hash();
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}
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blocks[0] = this._block;
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blocks.fill(0, 1, 17);
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}
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blocks[14] = (this._hBytes << 3) | (this._bytes >>> 29);
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blocks[15] = this._bytes << 3;
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this.hash();
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}
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hash(): void {
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let a = this._h0;
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let b = this._h1;
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let c = this._h2;
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let d = this._h3;
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let e = this._h4;
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let f, j, t;
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const blocks = this._blocks;
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for (j = 16; j < 80; ++j) {
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t = blocks[j - 3] ^ blocks[j - 8] ^ blocks[j - 14] ^ blocks[j - 16];
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blocks[j] = (t << 1) | (t >>> 31);
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}
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for (j = 0; j < 20; j += 5) {
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f = (b & c) | (~b & d);
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t = (a << 5) | (a >>> 27);
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e = (t + f + e + 1518500249 + blocks[j]) >>> 0;
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b = (b << 30) | (b >>> 2);
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f = (a & b) | (~a & c);
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t = (e << 5) | (e >>> 27);
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d = (t + f + d + 1518500249 + blocks[j + 1]) >>> 0;
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a = (a << 30) | (a >>> 2);
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f = (e & a) | (~e & b);
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t = (d << 5) | (d >>> 27);
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c = (t + f + c + 1518500249 + blocks[j + 2]) >>> 0;
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e = (e << 30) | (e >>> 2);
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f = (d & e) | (~d & a);
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t = (c << 5) | (c >>> 27);
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b = (t + f + b + 1518500249 + blocks[j + 3]) >>> 0;
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d = (d << 30) | (d >>> 2);
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f = (c & d) | (~c & e);
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t = (b << 5) | (b >>> 27);
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a = (t + f + a + 1518500249 + blocks[j + 4]) >>> 0;
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c = (c << 30) | (c >>> 2);
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}
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for (; j < 40; j += 5) {
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f = b ^ c ^ d;
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t = (a << 5) | (a >>> 27);
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e = (t + f + e + 1859775393 + blocks[j]) >>> 0;
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b = (b << 30) | (b >>> 2);
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f = a ^ b ^ c;
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t = (e << 5) | (e >>> 27);
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d = (t + f + d + 1859775393 + blocks[j + 1]) >>> 0;
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a = (a << 30) | (a >>> 2);
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f = e ^ a ^ b;
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t = (d << 5) | (d >>> 27);
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c = (t + f + c + 1859775393 + blocks[j + 2]) >>> 0;
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e = (e << 30) | (e >>> 2);
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f = d ^ e ^ a;
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t = (c << 5) | (c >>> 27);
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b = (t + f + b + 1859775393 + blocks[j + 3]) >>> 0;
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d = (d << 30) | (d >>> 2);
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f = c ^ d ^ e;
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t = (b << 5) | (b >>> 27);
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a = (t + f + a + 1859775393 + blocks[j + 4]) >>> 0;
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c = (c << 30) | (c >>> 2);
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}
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for (; j < 60; j += 5) {
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f = (b & c) | (b & d) | (c & d);
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t = (a << 5) | (a >>> 27);
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e = (t + f + e - 1894007588 + blocks[j]) >>> 0;
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b = (b << 30) | (b >>> 2);
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f = (a & b) | (a & c) | (b & c);
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t = (e << 5) | (e >>> 27);
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d = (t + f + d - 1894007588 + blocks[j + 1]) >>> 0;
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a = (a << 30) | (a >>> 2);
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f = (e & a) | (e & b) | (a & b);
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t = (d << 5) | (d >>> 27);
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c = (t + f + c - 1894007588 + blocks[j + 2]) >>> 0;
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e = (e << 30) | (e >>> 2);
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f = (d & e) | (d & a) | (e & a);
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t = (c << 5) | (c >>> 27);
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b = (t + f + b - 1894007588 + blocks[j + 3]) >>> 0;
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d = (d << 30) | (d >>> 2);
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f = (c & d) | (c & e) | (d & e);
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t = (b << 5) | (b >>> 27);
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a = (t + f + a - 1894007588 + blocks[j + 4]) >>> 0;
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c = (c << 30) | (c >>> 2);
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}
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for (; j < 80; j += 5) {
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f = b ^ c ^ d;
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t = (a << 5) | (a >>> 27);
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e = (t + f + e - 899497514 + blocks[j]) >>> 0;
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b = (b << 30) | (b >>> 2);
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f = a ^ b ^ c;
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t = (e << 5) | (e >>> 27);
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d = (t + f + d - 899497514 + blocks[j + 1]) >>> 0;
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a = (a << 30) | (a >>> 2);
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f = e ^ a ^ b;
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t = (d << 5) | (d >>> 27);
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c = (t + f + c - 899497514 + blocks[j + 2]) >>> 0;
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e = (e << 30) | (e >>> 2);
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f = d ^ e ^ a;
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t = (c << 5) | (c >>> 27);
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b = (t + f + b - 899497514 + blocks[j + 3]) >>> 0;
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d = (d << 30) | (d >>> 2);
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f = c ^ d ^ e;
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t = (b << 5) | (b >>> 27);
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a = (t + f + a - 899497514 + blocks[j + 4]) >>> 0;
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c = (c << 30) | (c >>> 2);
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}
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this._h0 = (this._h0 + a) >>> 0;
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this._h1 = (this._h1 + b) >>> 0;
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this._h2 = (this._h2 + c) >>> 0;
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this._h3 = (this._h3 + d) >>> 0;
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this._h4 = (this._h4 + e) >>> 0;
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}
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hex(): string {
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this.finalize();
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const h0 = this._h0;
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const h1 = this._h1;
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const h2 = this._h2;
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const h3 = this._h3;
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const h4 = this._h4;
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return (
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HEX_CHARS[(h0 >> 28) & 0x0f] +
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HEX_CHARS[(h0 >> 24) & 0x0f] +
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HEX_CHARS[(h0 >> 20) & 0x0f] +
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HEX_CHARS[(h0 >> 16) & 0x0f] +
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HEX_CHARS[(h0 >> 12) & 0x0f] +
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HEX_CHARS[(h0 >> 8) & 0x0f] +
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HEX_CHARS[(h0 >> 4) & 0x0f] +
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HEX_CHARS[h0 & 0x0f] +
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HEX_CHARS[(h1 >> 28) & 0x0f] +
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HEX_CHARS[(h1 >> 24) & 0x0f] +
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HEX_CHARS[(h1 >> 20) & 0x0f] +
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HEX_CHARS[(h1 >> 16) & 0x0f] +
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HEX_CHARS[(h1 >> 12) & 0x0f] +
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HEX_CHARS[(h1 >> 8) & 0x0f] +
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HEX_CHARS[(h1 >> 4) & 0x0f] +
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HEX_CHARS[h1 & 0x0f] +
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HEX_CHARS[(h2 >> 28) & 0x0f] +
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HEX_CHARS[(h2 >> 24) & 0x0f] +
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HEX_CHARS[(h2 >> 20) & 0x0f] +
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HEX_CHARS[(h2 >> 16) & 0x0f] +
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HEX_CHARS[(h2 >> 12) & 0x0f] +
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HEX_CHARS[(h2 >> 8) & 0x0f] +
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HEX_CHARS[(h2 >> 4) & 0x0f] +
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HEX_CHARS[h2 & 0x0f] +
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HEX_CHARS[(h3 >> 28) & 0x0f] +
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HEX_CHARS[(h3 >> 24) & 0x0f] +
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HEX_CHARS[(h3 >> 20) & 0x0f] +
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HEX_CHARS[(h3 >> 16) & 0x0f] +
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HEX_CHARS[(h3 >> 12) & 0x0f] +
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HEX_CHARS[(h3 >> 8) & 0x0f] +
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HEX_CHARS[(h3 >> 4) & 0x0f] +
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HEX_CHARS[h3 & 0x0f] +
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HEX_CHARS[(h4 >> 28) & 0x0f] +
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HEX_CHARS[(h4 >> 24) & 0x0f] +
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HEX_CHARS[(h4 >> 20) & 0x0f] +
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HEX_CHARS[(h4 >> 16) & 0x0f] +
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HEX_CHARS[(h4 >> 12) & 0x0f] +
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HEX_CHARS[(h4 >> 8) & 0x0f] +
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HEX_CHARS[(h4 >> 4) & 0x0f] +
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HEX_CHARS[h4 & 0x0f]
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);
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}
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toString(): string {
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return this.hex();
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}
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digest(): number[] {
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this.finalize();
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const h0 = this._h0;
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const h1 = this._h1;
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const h2 = this._h2;
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const h3 = this._h3;
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const h4 = this._h4;
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return [
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(h0 >> 24) & 0xff,
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(h0 >> 16) & 0xff,
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(h0 >> 8) & 0xff,
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h0 & 0xff,
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(h1 >> 24) & 0xff,
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(h1 >> 16) & 0xff,
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(h1 >> 8) & 0xff,
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h1 & 0xff,
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(h2 >> 24) & 0xff,
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(h2 >> 16) & 0xff,
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(h2 >> 8) & 0xff,
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h2 & 0xff,
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(h3 >> 24) & 0xff,
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(h3 >> 16) & 0xff,
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(h3 >> 8) & 0xff,
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h3 & 0xff,
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(h4 >> 24) & 0xff,
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(h4 >> 16) & 0xff,
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(h4 >> 8) & 0xff,
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h4 & 0xff
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];
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}
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array(): number[] {
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return this.digest();
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}
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arrayBuffer(): ArrayBuffer {
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this.finalize();
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return Uint32Array.of(this._h0, this._h1, this._h2, this._h3, this._h4)
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.buffer;
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}
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}
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