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Move std/util/sha1.ts to ES private fields (#5053)

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Kitson Kelly 2020-05-03 22:45:40 +10:00 committed by GitHub
parent 0f3e6e2eea
commit 1560af2b6e
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1 changed files with 69 additions and 70 deletions
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139
std/util/sha1.ts
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@ -6,7 +6,6 @@
* @copyright Chen, Yi-Cyuan 2014-2017
* @license MIT
*/
/*jslint bitwise: true */
const HEX_CHARS = "0123456789abcdef".split("");
const EXTRA = Uint32Array.of(-2147483648, 8388608, 32768, 128);
@ -15,40 +14,40 @@ const SHIFT = Uint32Array.of(24, 16, 8, 0);
const blocks = new Uint32Array(80);
export class Sha1 {
private _blocks: Uint32Array;
private _block: number;
private _start: number;
private _bytes: number;
private _hBytes: number;
private _finalized: boolean;
private _hashed: boolean;
#blocks: Uint32Array;
#block: number;
#start: number;
#bytes: number;
#hBytes: number;
#finalized: boolean;
#hashed: boolean;
private _h0 = 0x67452301;
private _h1 = 0xefcdab89;
private _h2 = 0x98badcfe;
private _h3 = 0x10325476;
private _h4 = 0xc3d2e1f0;
private _lastByteIndex = 0;
#h0 = 0x67452301;
#h1 = 0xefcdab89;
#h2 = 0x98badcfe;
#h3 = 0x10325476;
#h4 = 0xc3d2e1f0;
#lastByteIndex = 0;
constructor(sharedMemory = false) {
if (sharedMemory) {
this._blocks = blocks.fill(0, 0, 17);
this.#blocks = blocks.fill(0, 0, 17);
} else {
this._blocks = new Uint32Array(80);
this.#blocks = new Uint32Array(80);
}
this._h0 = 0x67452301;
this._h1 = 0xefcdab89;
this._h2 = 0x98badcfe;
this._h3 = 0x10325476;
this._h4 = 0xc3d2e1f0;
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.#block = this.#start = this.#bytes = this.#hBytes = 0;
this.#finalized = this.#hashed = false;
}
update(data: string | ArrayBuffer | ArrayBufferView): Sha1 {
if (this._finalized) {
if (this.#finalized) {
return this;
}
let notString = true;
@ -64,14 +63,14 @@ export class Sha1 {
let code;
let index = 0;
let i;
const start = this._start;
const start = this.#start;
const length = message.length || 0;
const blocks = this._blocks;
const blocks = this.#blocks;
while (index < length) {
if (this._hashed) {
this._hashed = false;
blocks[0] = this._block;
if (this.#hashed) {
this.#hashed = false;
blocks[0] = this.#block;
blocks.fill(0, 1, 17);
}
@ -104,54 +103,54 @@ export class Sha1 {
}
}
this._lastByteIndex = i;
this._bytes += i - start;
this.#lastByteIndex = i;
this.#bytes += i - start;
if (i >= 64) {
this._block = blocks[16];
this._start = i - 64;
this.#block = blocks[16];
this.#start = i - 64;
this.hash();
this._hashed = true;
this.#hashed = true;
} else {
this._start = i;
this.#start = i;
}
}
if (this._bytes > 4294967295) {
this._hBytes += (this._bytes / 4294967296) >>> 0;
this._bytes = this._bytes >>> 0;
if (this.#bytes > 4294967295) {
this.#hBytes += (this.#bytes / 4294967296) >>> 0;
this.#bytes = this.#bytes >>> 0;
}
return this;
}
finalize(): void {
if (this._finalized) {
if (this.#finalized) {
return;
}
this._finalized = true;
const blocks = this._blocks;
const i = this._lastByteIndex;
blocks[16] = this._block;
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];
this.#block = blocks[16];
if (i >= 56) {
if (!this._hashed) {
if (!this.#hashed) {
this.hash();
}
blocks[0] = this._block;
blocks[0] = this.#block;
blocks.fill(0, 1, 17);
}
blocks[14] = (this._hBytes << 3) | (this._bytes >>> 29);
blocks[15] = this._bytes << 3;
blocks[14] = (this.#hBytes << 3) | (this.#bytes >>> 29);
blocks[15] = this.#bytes << 3;
this.hash();
}
hash(): void {
let a = this._h0;
let b = this._h1;
let c = this._h2;
let d = this._h3;
let e = this._h4;
let a = this.#h0;
let b = this.#h1;
let c = this.#h2;
let d = this.#h3;
let e = this.#h4;
let f, j, t;
const blocks = this._blocks;
const blocks = this.#blocks;
for (j = 16; j < 80; ++j) {
t = blocks[j - 3] ^ blocks[j - 8] ^ blocks[j - 14] ^ blocks[j - 16];
@ -266,21 +265,21 @@ export class Sha1 {
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;
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;
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] +
@ -333,11 +332,11 @@ export class Sha1 {
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 h0 = this.#h0;
const h1 = this.#h1;
const h2 = this.#h2;
const h3 = this.#h3;
const h4 = this.#h4;
return [
(h0 >> 24) & 0xff,
@ -369,7 +368,7 @@ export class Sha1 {
arrayBuffer(): ArrayBuffer {
this.finalize();
return Uint32Array.of(this._h0, this._h1, this._h2, this._h3, this._h4)
return Uint32Array.of(this.#h0, this.#h1, this.#h2, this.#h3, this.#h4)
.buffer;
}
}