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Move std/util/sha1.ts to ES private fields (#5053)
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Kitson Kelly
GitHub
parent
0f3e6e2eea
commit
1560af2b6e
1 changed files with 69 additions and 70 deletions
139
std/util/sha1.ts
139
std/util/sha1.ts
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@ -6,7 +6,6 @@
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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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@ -15,40 +14,40 @@ 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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#blocks: Uint32Array;
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#block: number;
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#start: number;
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#bytes: number;
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#hBytes: number;
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#finalized: boolean;
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#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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#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 = false) {
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if (sharedMemory) {
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this._blocks = blocks.fill(0, 0, 17);
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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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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.#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.#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): Sha1 {
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if (this._finalized) {
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if (this.#finalized) {
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return this;
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}
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let notString = true;
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@ -64,14 +63,14 @@ export class Sha1 {
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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 start = this.#start;
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const length = message.length || 0;
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const blocks = this._blocks;
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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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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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@ -104,54 +103,54 @@ export class Sha1 {
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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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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.#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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this.#hashed = true;
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} else {
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this._start = i;
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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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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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return this;
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}
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finalize(): void {
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if (this._finalized) {
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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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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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this.#block = blocks[16];
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if (i >= 56) {
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if (!this._hashed) {
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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[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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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 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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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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@ -266,21 +265,21 @@ export class Sha1 {
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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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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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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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@ -333,11 +332,11 @@ export class Sha1 {
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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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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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@ -369,7 +368,7 @@ export class Sha1 {
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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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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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