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diff --git a/src/sha256_nice.js b/src/sha256_nice.js
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+/* A JavaScript implementation of the SHA family of hashes, as defined in FIPS PUB 180-2
+ * as well as the corresponding HMAC implementation as defined in FIPS PUB 198a
+ * Version 1.2 Copyright Brian Turek 2009
+ * Distributed under the BSD License
+ * See http://jssha.sourceforge.net/ for more information
+ *
+ * Several functions taken from Paul Johnson
+ */
+
+function jsSHA(srcString, inputFormat) {
+
+ jsSHA.charSize = 8;
+ jsSHA.b64pad = "";
+ jsSHA.hexCase = 0;
+
+ var sha224 = null;
+ var sha256 = null;
+
+ var str2binb = function (str) {
+ var bin = [];
+ var mask = (1 << jsSHA.charSize) - 1;
+ var length = str.length * jsSHA.charSize;
+
+ for (var i = 0; i < length; i += jsSHA.charSize) {
+ bin[i >> 5] |= (str.charCodeAt(i / jsSHA.charSize) & mask) << (32 - jsSHA.charSize - i % 32);
+ }
+
+ return bin;
+ };
+
+ var hex2binb = function (str) {
+ var bin = [];
+ var length = str.length;
+
+ for (var i = 0; i < length; i += 2) {
+ var num = parseInt(str.substr(i, 2), 16);
+ if (!isNaN(num)) {
+ bin[i >> 3] |= num << (24 - (4 * (i % 8)));
+ } else {
+ return "INVALID HEX STRING";
+ }
+ }
+
+ return bin;
+ };
+
+ var strBinLen = null;
+ var strToHash = null;
+
+ if ("HEX" === inputFormat) {
+ if (0 !== (srcString.length % 2)) {
+ return "TEXT MUST BE IN BYTE INCREMENTS";
+ }
+ strBinLen = srcString.length * 4;
+ strToHash = hex2binb(srcString);
+ } else if (("ASCII" === inputFormat) ||
+ ('undefined' === typeof(inputFormat))) {
+ strBinLen = srcString.length * jsSHA.charSize;
+ strToHash = str2binb(srcString);
+ } else {
+ return "UNKNOWN TEXT INPUT TYPE";
+ }
+
+ var binb2hex = function (binarray) {
+ var hex_tab = jsSHA.hexCase ? "0123456789ABCDEF" : "0123456789abcdef";
+ var str = "";
+ var length = binarray.length * 4;
+
+ for (var i = 0; i < length; i++) {
+ str += hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xF) + hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xF);
+ }
+
+ return str;
+ };
+
+ var binb2b64 = function (binarray) {
+ var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ var str = "";
+ var length = binarray.length * 4;
+ for (var i = 0; i < length; i += 3)
+ {
+ var triplet = (((binarray[i >> 2] >> 8 * (3 - i % 4)) & 0xFF) << 16) | (((binarray[i + 1 >> 2] >> 8 * (3 - (i + 1) % 4)) & 0xFF) << 8) | ((binarray[i + 2 >> 2] >> 8 * (3 - (i + 2) % 4)) & 0xFF);
+ for (var j = 0; j < 4; j++) {
+ if (i * 8 + j * 6 > binarray.length * 32) {
+ str += jsSHA.b64pad;
+ } else {
+ str += tab.charAt((triplet >> 6 * (3 - j)) & 0x3F);
+ }
+ }
+ }
+ return str;
+ };
+
+ var rotr = function (x, n) {
+ if (n < 32) {
+ return (x >>> n) | (x << (32 - n));
+ } else {
+ return x;
+ }
+ };
+
+ var shr = function (x, n) {
+ if (n < 32) {
+ return x >>> n;
+ } else {
+ return 0;
+ }
+ };
+
+ var ch = function (x, y, z) {
+ return (x & y) ^ (~x & z);
+ };
+
+ var maj = function (x, y, z) {
+ return (x & y) ^ (x & z) ^ (y & z);
+ };
+
+ var sigma0 = function (x) {
+ return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22);
+ };
+
+ var sigma1 = function (x) {
+ return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25);
+ };
+
+ var gamma0 = function (x) {
+ return rotr(x, 7) ^ rotr(x, 18) ^ shr(x, 3);
+ };
+
+ var gamma1 = function (x) {
+ return rotr(x, 17) ^ rotr(x, 19) ^ shr(x, 10);
+ };
+
+ var safeAdd_2 = function (x, y) {
+ var lsw = (x & 0xFFFF) + (y & 0xFFFF);
+ var msw = (x >>> 16) + (y >>> 16) + (lsw >>> 16);
+
+ return ((msw & 0xFFFF) << 16) | (lsw & 0xFFFF);
+ };
+
+ var safeAdd_4 = function (a, b, c, d) {
+ var lsw = (a & 0xFFFF) + (b & 0xFFFF) + (c & 0xFFFF) + (d & 0xFFFF);
+ var msw = (a >>> 16) + (b >>> 16) + (c >>> 16) + (d >>> 16) + (lsw >>> 16);
+
+ return ((msw & 0xFFFF) << 16) | (lsw & 0xFFFF);
+ };
+
+ var safeAdd_5 = function (a, b, c, d, e) {
+ var lsw = (a & 0xFFFF) + (b & 0xFFFF) + (c & 0xFFFF) + (d & 0xFFFF) +
+ (e & 0xFFFF);
+ var msw = (a >>> 16) + (b >>> 16) + (c >>> 16) + (d >>> 16) +
+ (e >>> 16) + (lsw >>> 16);
+
+ return ((msw & 0xFFFF) << 16) | (lsw & 0xFFFF);
+ };
+
+ var coreSHA2 = function (message, messageLen, variant) {
+ var W = [];
+ var a, b, c, d, e, f, g, h;
+ var T1, T2;
+ var H;
+ var 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
+ ];
+
+ if (variant === "SHA-224") {
+ H = [
+ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
+ 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4
+ ];
+ } else {
+ H = [
+ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
+ 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19
+ ];
+ }
+
+ message[messageLen >> 5] |= 0x80 << (24 - messageLen % 32);
+ message[((messageLen + 1 + 64 >> 9) << 4) + 15] = messageLen;
+
+ var appendedMessageLength = message.length;
+
+ for (var i = 0; i < appendedMessageLength; i += 16) {
+ a = H[0];
+ b = H[1];
+ c = H[2];
+ d = H[3];
+ e = H[4];
+ f = H[5];
+ g = H[6];
+ h = H[7];
+
+ for (var t = 0; t < 64; t++) {
+ if (t < 16) {
+ W[t] = message[t + i];
+ } else {
+ W[t] = safeAdd_4(gamma1(W[t - 2]), W[t - 7], gamma0(W[t - 15]), W[t - 16]);
+ }
+
+ T1 = safeAdd_5(h, sigma1(e), ch(e, f, g), K[t], W[t]);
+ T2 = safeAdd_2(sigma0(a), maj(a, b, c));
+ h = g;
+ g = f;
+ f = e;
+ e = safeAdd_2(d, T1);
+ d = c;
+ c = b;
+ b = a;
+ a = safeAdd_2(T1, T2);
+ }
+
+ H[0] = safeAdd_2(a, H[0]);
+ H[1] = safeAdd_2(b, H[1]);
+ H[2] = safeAdd_2(c, H[2]);
+ H[3] = safeAdd_2(d, H[3]);
+ H[4] = safeAdd_2(e, H[4]);
+ H[5] = safeAdd_2(f, H[5]);
+ H[6] = safeAdd_2(g, H[6]);
+ H[7] = safeAdd_2(h, H[7]);
+ }
+
+ switch (variant) {
+ case "SHA-224":
+ return [
+ H[0], H[1], H[2], H[3],
+ H[4], H[5], H[6]
+ ];
+ case "SHA-256":
+ return H;
+ default:
+ return [];
+ }
+ };
+
+ this.getHash = function (variant, format) {
+ var formatFunc = null;
+ var message = strToHash.slice();
+
+ switch (format) {
+ case "HEX":
+ formatFunc = binb2hex;
+ break;
+ case "B64":
+ formatFunc = binb2b64;
+ break;
+ default:
+ return "FORMAT NOT RECOGNIZED";
+ }
+
+ switch (variant) {
+ case "SHA-224":
+ if (sha224 === null) {
+ sha224 = coreSHA2(message, strBinLen, variant);
+ }
+ return formatFunc(sha224);
+ case "SHA-256":
+ if (sha256 === null) {
+ sha256 = coreSHA2(message, strBinLen, variant);
+ }
+ return formatFunc(sha256);
+ default:
+ return "HASH NOT RECOGNIZED";
+ }
+ };
+
+ this.getHMAC = function (key, inputFormat, variant, outputFormat) {
+ var formatFunc = null;
+ var keyToUse = null;
+ var keyWithIPad = [];
+ var keyWithOPad = [];
+ var retVal = null;
+ var keyBinLen = null;
+ var hashBitSize = null;
+
+ switch (outputFormat) {
+ case "HEX":
+ formatFunc = binb2hex;
+ break;
+ case "B64":
+ formatFunc = binb2b64;
+ break;
+ default:
+ return "FORMAT NOT RECOGNIZED";
+ }
+
+ switch (variant) {
+ case "SHA-224":
+ hashBitSize = 224;
+ break;
+ case "SHA-256":
+ hashBitSize = 256;
+ break;
+ default:
+ return "HASH NOT RECOGNIZED";
+ }
+
+ if ("HEX" === inputFormat) {
+ if (0 !== (key.length % 2)) {
+ return "KEY MUST BE IN BYTE INCREMENTS";
+ }
+ keyToUse = hex2binb(key);
+ keyBinLen = key.length * 4;
+ } else if ("ASCII" === inputFormat) {
+ keyToUse = str2binb(key);
+ keyBinLen = key.length * jsSHA.charSize;
+ } else {
+ return "UNKNOWN KEY INPUT TYPE";
+ }
+
+ if (512 < keyBinLen) {
+ keyToUse = coreSHA2(keyToUse, keyBinLen, variant);
+ keyToUse[15] &= 0xFFFFFF00;
+ } else if (512 > keyBinLen) {
+ keyToUse[15] &= 0xFFFFFF00;
+ }
+
+ for (var i = 0; i <= 15; i++) {
+ keyWithIPad[i] = keyToUse[i] ^ 0x36363636;
+ keyWithOPad[i] = keyToUse[i] ^ 0x5C5C5C5C;
+ }
+
+ retVal = coreSHA2(keyWithIPad.concat(strToHash), 512 + strBinLen, variant);
+ retVal = coreSHA2(keyWithOPad.concat(retVal), 512 + hashBitSize, variant);
+
+ return (formatFunc(retVal));
+ };
+}
generated by cgit v1.1 at 2025-06-03 07:04:21 +0000