JezK

Edit File: sha256.js

/**
 * [js-sha256]{@link https://github.com/emn178/js-sha256}
 *
 * @version 0.11.0
 * @author Chen, Yi-Cyuan [emn178@gmail.com]
 * @copyright Chen, Yi-Cyuan 2014-2024
 * @license MIT
 */
/*jslint bitwise: true */
(function () {
    'use strict';

var blocks = [];

if (root.JS_SHA256_NO_NODE_JS || !Array.isArray) {
        Array.isArray = function (obj) {
            return Object.prototype.toString.call(obj) === '[object Array]';
        };
    }

if (ARRAY_BUFFER && (root.JS_SHA256_NO_ARRAY_BUFFER_IS_VIEW || !ArrayBuffer.isView)) {
        ArrayBuffer.isView = function (obj) {
            return typeof obj === 'object' && obj.buffer && obj.buffer.constructor === ArrayBuffer;
        };
    }

var createOutputMethod = function (outputType, is224) {
        return function (message) {
            return new Sha256(is224, true).update(message)[outputType]();
        };
    };

var createHmacOutputMethod = function (outputType, is224) {
        return function (key, message) {
            return new HmacSha256(key, is224, true).update(message)[outputType]();
        };
    };

function Sha256(is224, sharedMemory) {
        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];
        }

if (is224) {
            this.h0 = 0xc1059ed8;
            this.h1 = 0x367cd507;
            this.h2 = 0x3070dd17;
            this.h3 = 0xf70e5939;
            this.h4 = 0xffc00b31;
            this.h5 = 0x68581511;
            this.h6 = 0x64f98fa7;
            this.h7 = 0xbefa4fa4;
        } else { // 256
            this.h0 = 0x6a09e667;
            this.h1 = 0xbb67ae85;
            this.h2 = 0x3c6ef372;
            this.h3 = 0xa54ff53a;
            this.h4 = 0x510e527f;
            this.h5 = 0x9b05688c;
            this.h6 = 0x1f83d9ab;
            this.h7 = 0x5be0cd19;
        }

this.block = this.start = this.bytes = this.hBytes = 0;
        this.finalized = this.hashed = false;
        this.first = true;
        this.is224 = is224;
    }

Sha256.prototype.update = function (message) {
        if (this.finalized) {
            return;
        }
        var notString, type = typeof message;
        if (type !== 'string') {
            if (type === 'object') {
                if (message === null) {
                    throw new Error(ERROR);
                } else if (ARRAY_BUFFER && message.constructor === ArrayBuffer) {
                    message = new Uint8Array(message);
                } else if (!Array.isArray(message)) {
                    if (!ARRAY_BUFFER || !ArrayBuffer.isView(message)) {
                        throw new Error(ERROR);
                    }
                }
            } else {
                throw new Error(ERROR);
            }
            notString = true;
        }
        var code, index = 0, i, length = message.length, blocks = this.blocks;
        while (index < length) {
            if (this.hashed) {
                this.hashed = false;
                blocks[0] = this.block;
                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;
    };

Sha256.prototype.finalize = function () {
        if (this.finalized) {
            return;
        }
        this.finalized = true;
        var 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();
    };

Sha256.prototype.hash = function () {
        var a = this.h0, b = this.h1, c = this.h2, d = this.h3, e = this.h4, f = this.h5, g = this.h6,
            h = this.h7, blocks = this.blocks, j, s0, s1, maj, t1, t2, ch, ab, da, cd, bc;

for (j = 16; j < 64; ++j) {
            // rightrotate
            t1 = blocks[j - 15];
            s0 = ((t1 >>> 7) | (t1 << 25)) ^ ((t1 >>> 18) | (t1 << 14)) ^ (t1 >>> 3);
            t1 = blocks[j - 2];
            s1 = ((t1 >>> 17) | (t1 << 15)) ^ ((t1 >>> 19) | (t1 << 13)) ^ (t1 >>> 10);
            blocks[j] = blocks[j - 16] + s0 + blocks[j - 7] + s1 << 0;
        }

bc = b & c;
        for (j = 0; j < 64; j += 4) {
            if (this.first) {
                if (this.is224) {
                    ab = 300032;
                    t1 = blocks[0] - 1413257819;
                    h = t1 - 150054599 << 0;
                    d = t1 + 24177077 << 0;
                } else {
                    ab = 704751109;
                    t1 = blocks[0] - 210244248;
                    h = t1 - 1521486534 << 0;
                    d = t1 + 143694565 << 0;
                }
                this.first = false;
            } else {
                s0 = ((a >>> 2) | (a << 30)) ^ ((a >>> 13) | (a << 19)) ^ ((a >>> 22) | (a << 10));
                s1 = ((e >>> 6) | (e << 26)) ^ ((e >>> 11) | (e << 21)) ^ ((e >>> 25) | (e << 7));
                ab = a & b;
                maj = ab ^ (a & c) ^ bc;
                ch = (e & f) ^ (~e & g);
                t1 = h + s1 + ch + K[j] + blocks[j];
                t2 = s0 + maj;
                h = d + t1 << 0;
                d = t1 + t2 << 0;
            }
            s0 = ((d >>> 2) | (d << 30)) ^ ((d >>> 13) | (d << 19)) ^ ((d >>> 22) | (d << 10));
            s1 = ((h >>> 6) | (h << 26)) ^ ((h >>> 11) | (h << 21)) ^ ((h >>> 25) | (h << 7));
            da = d & a;
            maj = da ^ (d & b) ^ ab;
            ch = (h & e) ^ (~h & f);
            t1 = g + s1 + ch + K[j + 1] + blocks[j + 1];
            t2 = s0 + maj;
            g = c + t1 << 0;
            c = t1 + t2 << 0;
            s0 = ((c >>> 2) | (c << 30)) ^ ((c >>> 13) | (c << 19)) ^ ((c >>> 22) | (c << 10));
            s1 = ((g >>> 6) | (g << 26)) ^ ((g >>> 11) | (g << 21)) ^ ((g >>> 25) | (g << 7));
            cd = c & d;
            maj = cd ^ (c & a) ^ da;
            ch = (g & h) ^ (~g & e);
            t1 = f + s1 + ch + K[j + 2] + blocks[j + 2];
            t2 = s0 + maj;
            f = b + t1 << 0;
            b = t1 + t2 << 0;
            s0 = ((b >>> 2) | (b << 30)) ^ ((b >>> 13) | (b << 19)) ^ ((b >>> 22) | (b << 10));
            s1 = ((f >>> 6) | (f << 26)) ^ ((f >>> 11) | (f << 21)) ^ ((f >>> 25) | (f << 7));
            bc = b & c;
            maj = bc ^ (b & d) ^ cd;
            ch = (f & g) ^ (~f & h);
            t1 = e + s1 + ch + K[j + 3] + blocks[j + 3];
            t2 = s0 + maj;
            e = a + t1 << 0;
            a = t1 + t2 << 0;
            this.chromeBugWorkAround = true;
        }

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.h5 = this.h5 + f << 0;
        this.h6 = this.h6 + g << 0;
        this.h7 = this.h7 + h << 0;
    };

Sha256.prototype.hex = function () {
        this.finalize();

var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5,
            h6 = this.h6, h7 = this.h7;

var hex = 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] +
            HEX_CHARS[(h5 >>> 28) & 0x0F] + HEX_CHARS[(h5 >>> 24) & 0x0F] +
            HEX_CHARS[(h5 >>> 20) & 0x0F] + HEX_CHARS[(h5 >>> 16) & 0x0F] +
            HEX_CHARS[(h5 >>> 12) & 0x0F] + HEX_CHARS[(h5 >>> 8) & 0x0F] +
            HEX_CHARS[(h5 >>> 4) & 0x0F] + HEX_CHARS[h5 & 0x0F] +
            HEX_CHARS[(h6 >>> 28) & 0x0F] + HEX_CHARS[(h6 >>> 24) & 0x0F] +
            HEX_CHARS[(h6 >>> 20) & 0x0F] + HEX_CHARS[(h6 >>> 16) & 0x0F] +
            HEX_CHARS[(h6 >>> 12) & 0x0F] + HEX_CHARS[(h6 >>> 8) & 0x0F] +
            HEX_CHARS[(h6 >>> 4) & 0x0F] + HEX_CHARS[h6 & 0x0F];
        if (!this.is224) {
            hex += HEX_CHARS[(h7 >>> 28) & 0x0F] + HEX_CHARS[(h7 >>> 24) & 0x0F] +
                HEX_CHARS[(h7 >>> 20) & 0x0F] + HEX_CHARS[(h7 >>> 16) & 0x0F] +
                HEX_CHARS[(h7 >>> 12) & 0x0F] + HEX_CHARS[(h7 >>> 8) & 0x0F] +
                HEX_CHARS[(h7 >>> 4) & 0x0F] + HEX_CHARS[h7 & 0x0F];
        }
        return hex;
    };

Sha256.prototype.toString = Sha256.prototype.hex;

Sha256.prototype.digest = function () {
        this.finalize();

var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5,
            h6 = this.h6, h7 = this.h7;

var arr = [
            (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,
            (h5 >>> 24) & 0xFF, (h5 >>> 16) & 0xFF, (h5 >>> 8) & 0xFF, h5 & 0xFF,
            (h6 >>> 24) & 0xFF, (h6 >>> 16) & 0xFF, (h6 >>> 8) & 0xFF, h6 & 0xFF
        ];
        if (!this.is224) {
            arr.push((h7 >>> 24) & 0xFF, (h7 >>> 16) & 0xFF, (h7 >>> 8) & 0xFF, h7 & 0xFF);
        }
        return arr;
    };

Sha256.prototype.array = Sha256.prototype.digest;

Sha256.prototype.arrayBuffer = function () {
        this.finalize();

var buffer = new ArrayBuffer(this.is224 ? 28 : 32);
        var 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);
        dataView.setUint32(20, this.h5);
        dataView.setUint32(24, this.h6);
        if (!this.is224) {
            dataView.setUint32(28, this.h7);
        }
        return buffer;
    };

if (key.length > 64) {
            key = (new Sha256(is224, true)).update(key).array();
        }

var oKeyPad = [], iKeyPad = [];
        for (i = 0; i < 64; ++i) {
            var b = key[i] || 0;
            oKeyPad[i] = 0x5c ^ b;
            iKeyPad[i] = 0x36 ^ b;
        }

Sha256.call(this, is224, sharedMemory);

this.update(iKeyPad);
        this.oKeyPad = oKeyPad;
        this.inner = true;
        this.sharedMemory = sharedMemory;
    }
    HmacSha256.prototype = new Sha256();

HmacSha256.prototype.finalize = function () {
        Sha256.prototype.finalize.call(this);
        if (this.inner) {
            this.inner = false;
            var innerHash = this.array();
            Sha256.call(this, this.is224, this.sharedMemory);
            this.update(this.oKeyPad);
            this.update(innerHash);
            Sha256.prototype.finalize.call(this);
        }
    };

var exports = createMethod();
    exports.sha256 = exports;
    exports.sha224 = createMethod(true);
    exports.sha256.hmac = createHmacMethod();
    exports.sha224.hmac = createHmacMethod(true);

if (COMMON_JS) {
        module.exports = exports;
    } else {
        root.sha256 = exports.sha256;
        root.sha224 = exports.sha224;
        if (AMD) {
            define(function () {
                return exports;
            });
        }
    }
})();