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denoland-deno/ws/sha1.ts

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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
*/
/*jslint bitwise: true */
const HEX_CHARS = "0123456789abcdef".split("");
const EXTRA = [-2147483648, 8388608, 32768, 128];
const SHIFT = [24, 16, 8, 0];
const blocks = [];
export class Sha1 {
blocks;
block;
start;
bytes;
hBytes;
finalized;
hashed;
first;
h0 = 0x67452301;
h1 = 0xefcdab89;
h2 = 0x98badcfe;
h3 = 0x10325476;
h4 = 0xc3d2e1f0;
lastByteIndex = 0;
constructor(sharedMemory: boolean = 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;
this.first = true;
}
update(data: string | ArrayBuffer) {
if (this.finalized) {
return;
}
let message;
let notString = typeof data !== "string";
if (notString && data instanceof ArrayBuffer) {
message = new Uint8Array(data);
} else {
message = data;
}
let code,
index = 0,
i,
length = message.length || 0,
blocks = this.blocks;
while (index < length) {
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 (notString) {
for (i = this.start; index < length && i < 64; ++index) {
blocks[i >> 2] |= message[index] << SHIFT[i++ & 3];
}
} else {
for (i = this.start; index < length && i < 64; ++index) {
code = message.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) | (message.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;
}
finalize() {
if (this.finalized) {
return;
}
this.finalized = true;
let blocks = this.blocks,
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();
}
hash() {
let a = this.h0,
b = this.h1,
c = this.h2,
d = this.h3,
e = this.h4;
let f,
j,
t,
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() {
this.finalize();
let h0 = this.h0,
h1 = this.h1,
h2 = this.h2,
h3 = this.h3,
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() {
return this.hex();
}
digest() {
this.finalize();
let h0 = this.h0,
h1 = this.h1,
h2 = this.h2,
h3 = this.h3,
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() {
return this.digest();
}
arrayBuffer() {
this.finalize();
let buffer = new ArrayBuffer(20);
let 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;
}
}