@technobuddha/library

<!doctype html> <html lang="en"> <head> <title>Code coverage report for sha224.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="prettify.css" /> <link rel="stylesheet" href="base.css" /> <link rel="shortcut icon" type="image/x-icon" href="favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="index.html">All files</a> sha224.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 100% Statements 115/115 </div> <div class='fl pad1y space-right2'> 100% Branches 11/11 </div> <div class='fl pad1y space-right2'> 100% Functions 8/8 </div> <div class='fl pad1y space-right2'> 100% Lines 115/115 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. <template id="filterTemplate"> <div class="quiet"> Filter: <input type="search" id="fileSearch"> </div> </template> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a href='#L13'>13</a> <a name='L14'></a><a href='#L14'>14</a> <a name='L15'></a><a href='#L15'>15</a> <a name='L16'></a><a href='#L16'>16</a> <a name='L17'></a><a href='#L17'>17</a> <a name='L18'></a><a href='#L18'>18</a> <a name='L19'></a><a href='#L19'>19</a> <a name='L20'></a><a href='#L20'>20</a> <a name='L21'></a><a href='#L21'>21</a> <a name='L22'></a><a 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21x 21x 21x 21x 21x 21x 21x   21x 21x 336x 336x 336x 336x 336x 336x 21x 1008x 1008x   21x 1344x 1344x   1344x 1344x 1344x 1344x 1344x 1344x 1344x 1344x 1344x   21x 21x 21x 21x 21x 21x 21x 21x 21x   1x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 1x  </td><td class="text"><pre class="prettyprint lang-js">/* eslint-disable no-bitwise */ import { ch } from './ch.ts'; import { int32 } from './int32.ts'; import { maj } from './maj.ts'; import { ShaBase } from './sha-base.ts';   /** * Constants used in the SHA-224 and SHA-256 cryptographic hash functions. * * These 32-bit integer values are the first 32 bits of the fractional parts of the cube roots of the first 64 prime numbers. * They are used as round constants in the main compression function of the SHA-2 family of algorithms. * @see [FIPS PUB 180-4, Section 4.2.2](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf) * @internal */ const K = [ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, ];   /** * Computes the SHA-224/SHA-256 σ₀ (sigma0) function for a 32-bit integer. * * This function performs a bitwise rotation and XOR combination as defined in the SHA-2 specification: * σ₀(x) = ROTR²(x) ⊕ ROTR¹³(x) ⊕ ROTR²²(x) * @param x - The 32-bit integer input. * @returns The result of applying the σ₀ function to the input. * @internal */ function sigma0(x: number): number { return ((x >>> 2) | (x << 30)) ^ ((x >>> 13) | (x << 19)) ^ ((x >>> 22) | (x << 10)); }   /** * Computes the SHA-224/SHA-256 σ₁ (sigma1) function for a 32-bit integer. * * This function performs bitwise right rotations and XORs as defined in the SHA-2 specification: * σ₁(x) = ROTR⁶(x) ⊕ ROTR¹¹(x) ⊕ ROTR²⁵(x) * @param x - The 32-bit integer input. * @returns The result of applying the σ₁ function to the input. * @internal */ function sigma1(x: number): number { return ((x >>> 6) | (x << 26)) ^ ((x >>> 11) | (x << 21)) ^ ((x >>> 25) | (x << 7)); }   /** * Computes the SHA-224/SHA-256 σ₀ (gamma0) function for a 32-bit integer. * * This function performs a bitwise rotation and shift, then combines the results using XOR, * as defined in the SHA-2 specification: * σ₀(x) = ROTR⁷(x) ⊕ ROTR¹⁸(x) ⊕ SHR³(x) * @param x - The 32-bit integer input. * @returns The result of the σ₀ transformation. * @internal */ function gamma0(x: number): number { return ((x >>> 7) | (x << 25)) ^ ((x >>> 18) | (x << 14)) ^ (x >>> 3); }   /** * Computes the SHA-224/SHA-256 σ₁ (gamma1) function for a 32-bit integer. * * This function performs bitwise operations as defined in the SHA-2 specification: * σ₁(x) = ROTR^17(x) XOR ROTR^19(x) XOR SHR^10(x) * where: * - ROTR^n(x) is the right rotation of x by n bits, * - SHR^n(x) is the right shift of x by n bits. * @param x - The 32-bit integer input. * @returns The result of applying the σ₁ function to the input. * @internal */ function gamma1(x: number): number { return ((x >>> 17) | (x << 15)) ^ ((x >>> 19) | (x << 13)) ^ (x >>> 10); }   /** * Secure Hash Algorithm, SHA2 SHA-224 * @example * ```typescript * const sha224 = new Sha224(); * sha224.update('hello world', 'utf8'); * sha224.digest('hex'); * // '23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7' * ``` * ```typescript * const sha224 = new Sha224(); * sha224.update(new Uint8Array([0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64])); * sha224.digest('hex'); * // '23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7' * ``` * @group Binary * @category Hash */ export class Sha224 extends ShaBase { private a = 0xc1059ed8; private b = 0x367cd507; private c = 0x3070dd17; private d = 0xf70e5939; private e = 0xffc00b31; private f = 0x68581511; private g = 0x64f98fa7; private h = 0xbefa4fa4; private readonly w: number[];   /** * Creates a new SHA-224 hash instance and initializes its internal state. * * @remarks * The internal state variables are set to the initial SHA-224 constants as specified * in FIPS PUB 180-4. Use {@link update} to process data and {@link digest} to retrieve the hash. */ public constructor() { super(64, 56); this.w = Array.from({ length: 64 }); }   protected override updateCounters(buffer: Uint8Array): void { const { w } = this; let a = int32(this.a); let b = int32(this.b); let c = int32(this.c); let d = int32(this.d); let e = int32(this.e); let f = int32(this.f); let g = int32(this.g); let h = int32(this.h);   let i: number; for (i = 0; i < 16; ++i) { w[i] = (buffer[i * 4 + 0] << 24) | (buffer[i * 4 + 1] << 16) | (buffer[i * 4 + 2] << 8) | buffer[i * 4 + 3]; } for (; i < 64; ++i) { w[i] = int32(gamma1(w[i - 2]) + w[i - 7] + gamma0(w[i - 15]) + w[i - 16]); }   for (let j = 0; j < 64; ++j) { const T1 = int32(h + sigma1(e) + ch(e, f, g) + int32(K[j]) + w[j]); const T2 = int32(sigma0(a) + maj(a, b, c));   h = g; g = f; f = e; e = int32(d + T1); d = c; c = b; b = a; a = int32(T1 + T2); }   this.a = int32(a + this.a); this.b = int32(b + this.b); this.c = int32(c + this.c); this.d = int32(d + this.d); this.e = int32(e + this.e); this.f = int32(f + this.f); this.g = int32(g + this.g); this.h = int32(h + this.h); }   protected override hash(): Uint8Array { return new Uint8Array([ (this.a & 0xff000000) >> 24, (this.a & 0x00ff0000) >> 16, (this.a & 0x0000ff00) >> 8, this.a & 0x000000ff, (this.b & 0xff000000) >> 24, (this.b & 0x00ff0000) >> 16, (this.b & 0x0000ff00) >> 8, this.b & 0x000000ff, (this.c & 0xff000000) >> 24, (this.c & 0x00ff0000) >> 16, (this.c & 0x0000ff00) >> 8, this.c & 0x000000ff, (this.d & 0xff000000) >> 24, (this.d & 0x00ff0000) >> 16, (this.d & 0x0000ff00) >> 8, this.d & 0x000000ff, (this.e & 0xff000000) >> 24, (this.e & 0x00ff0000) >> 16, (this.e & 0x0000ff00) >> 8, this.e & 0x000000ff, (this.f & 0xff000000) >> 24, (this.f & 0x00ff0000) >> 16, (this.f & 0x0000ff00) >> 8, this.f & 0x000000ff, (this.g & 0xff000000) >> 24, (this.g & 0x00ff0000) >> 16, (this.g & 0x0000ff00) >> 8, this.g & 0x000000ff, ]); } }  </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-09-10T15:22:40.218Z </div> <script src="prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="sorter.js"></script> <script src="block-navigation.js"></script> </body> </html>