mirror of
https://github.com/denoland/deno.git
synced 2024-11-27 16:10:57 -05:00
382 lines
10 KiB
TypeScript
382 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 = [-2147483648, 8388608, 32768, 128];
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const SHIFT = [24, 16, 8, 0];
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const blocks = [];
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export class Sha1 {
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blocks;
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block;
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start;
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bytes;
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hBytes;
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finalized;
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hashed;
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first;
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h0 = 0x67452301;
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h1 = 0xefcdab89;
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h2 = 0x98badcfe;
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h3 = 0x10325476;
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h4 = 0xc3d2e1f0;
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lastByteIndex = 0;
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constructor(sharedMemory: boolean = false) {
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if (sharedMemory) {
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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;
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this.blocks = blocks;
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} else {
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this.blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
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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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this.first = true;
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}
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update(data: string | ArrayBuffer) {
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if (this.finalized) {
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return;
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}
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let message;
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let notString = typeof data !== "string";
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if (notString && data instanceof ArrayBuffer) {
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message = new Uint8Array(data);
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} else {
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message = data;
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}
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let code,
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index = 0,
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i,
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length = message.length || 0,
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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[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;
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}
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if (notString) {
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for (i = this.start; index < length && i < 64; ++index) {
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blocks[i >> 2] |= message[index] << SHIFT[i++ & 3];
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}
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} else {
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for (i = this.start; index < length && i < 64; ++index) {
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code = message.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) | (message.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 - this.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 % 4294967296;
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}
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return this;
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}
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finalize() {
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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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let blocks = this.blocks,
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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[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;
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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() {
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let a = this.h0,
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b = this.h1,
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c = this.h2,
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d = this.h3,
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e = this.h4;
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let f,
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j,
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t,
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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() {
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this.finalize();
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let h0 = this.h0,
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h1 = this.h1,
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h2 = this.h2,
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h3 = this.h3,
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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() {
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return this.hex();
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}
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digest() {
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this.finalize();
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let h0 = this.h0,
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h1 = this.h1,
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h2 = this.h2,
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h3 = this.h3,
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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() {
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return this.digest();
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}
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arrayBuffer() {
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this.finalize();
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let buffer = new ArrayBuffer(20);
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let dataView = new DataView(buffer);
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dataView.setUint32(0, this.h0);
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dataView.setUint32(4, this.h1);
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dataView.setUint32(8, this.h2);
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dataView.setUint32(12, this.h3);
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dataView.setUint32(16, this.h4);
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return buffer;
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}
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}
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