HMAC Hashes + SipHash (v12)

Revision 12 of this benchmark created on


Description

SHA1 and RIPEMD-160 and SipHash HMAC

Preparation HTML

<script src="//rawgithub.com/jedisct1/siphash-js/master/lib/siphash.js"></script>
<script src="//www.dchest.org/blake2s-js/blake2s.js"></script>

Setup

var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
    
    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    
    function hex_sha512(s) {
      return rstr2hex(rstr_sha512(str2rstr_utf8(s)));
    }
    
    function b64_sha512(s) {
      return rstr2b64(rstr_sha512(str2rstr_utf8(s)));
    }
    
    function any_sha512(s, e) {
      return rstr2any(rstr_sha512(str2rstr_utf8(s)), e);
    }
    
    function hex_hmac_sha512(k, d) {
      return rstr2hex(rstr_hmac_sha512(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function b64_hmac_sha512(k, d) {
      return rstr2b64(rstr_hmac_sha512(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function any_hmac_sha512(k, d, e) {
      return rstr2any(rstr_hmac_sha512(str2rstr_utf8(k), str2rstr_utf8(d)), e);
    }
    
    /*
     * Perform a simple self-test to see if the VM is working
     */
    
    function sha512_vm_test() {
      return hex_sha512("abc").toLowerCase() == "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a" + "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f";
    }
    
    /*
     * Calculate the SHA-512 of a raw string
     */
    
    function rstr_sha512(s) {
      return binb2rstr(binb_sha512(rstr2binb(s), s.length * 8));
    }
    
    /*
     * Calculate the HMAC-SHA-512 of a key and some data (raw strings)
     */
    
    function rstr_hmac_sha512(key, data) {
      var bkey = rstr2binb(key);
      if (bkey.length > 32) bkey = binb_sha512(bkey, key.length * 8);
    
      var ipad = Array(32),
        opad = Array(32);
      for (var i = 0; i < 32; i++) {
        ipad[i] = bkey[i] ^ 0x36363636;
        opad[i] = bkey[i] ^ 0x5C5C5C5C;
      }
    
      var hash = binb_sha512(ipad.concat(rstr2binb(data)), 1024 + data.length * 8);
      return binb2rstr(binb_sha512(opad.concat(hash), 1024 + 512));
    }
    
    /*
     * Convert a raw string to a hex string
     */
    
    function rstr2hex(input) {
      try {
        hexcase
      } catch (e) {
        hexcase = 0;
      }
      var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
      var output = "";
      var x;
      for (var i = 0; i < input.length; i++) {
        x = input.charCodeAt(i);
        output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
      }
      return output;
    }
    
    /*
     * Convert a raw string to a base-64 string
     */
    
    function rstr2b64(input) {
      try {
        b64pad
      } catch (e) {
        b64pad = '';
      }
      var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
      var output = "";
      var len = input.length;
      for (var i = 0; i < len; i += 3) {
        var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
        for (var j = 0; j < 4; j++) {
          if (i * 8 + j * 6 > input.length * 8) output += b64pad;
          else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
        }
      }
      return output;
    }
    
    /*
     * Convert a raw string to an arbitrary string encoding
     */
    
    function rstr2any(input, encoding) {
      var divisor = encoding.length;
      var i, j, q, x, quotient;
    
      /* Convert to an array of 16-bit big-endian values, forming the dividend */
      var dividend = Array(Math.ceil(input.length / 2));
      for (i = 0; i < dividend.length; i++) {
        dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
      }
    
      /*
       * Repeatedly perform a long division. The binary array forms the dividend,
       * the length of the encoding is the divisor. Once computed, the quotient
       * forms the dividend for the next step. All remainders are stored for later
       * use.
       */
      var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));
      var remainders = Array(full_length);
      for (j = 0; j < full_length; j++) {
        quotient = Array();
        x = 0;
        for (i = 0; i < dividend.length; i++) {
          x = (x << 16) + dividend[i];
          q = Math.floor(x / divisor);
          x -= q * divisor;
          if (quotient.length > 0 || q > 0) quotient[quotient.length] = q;
        }
        remainders[j] = x;
        dividend = quotient;
      }
    
      /* Convert the remainders to the output string */
      var output = "";
      for (i = remainders.length - 1; i >= 0; i--)
        output += encoding.charAt(remainders[i]);
    
      return output;
    }
    
    /*
     * Encode a string as utf-8.
     * For efficiency, this assumes the input is valid utf-16.
     */
    
    function str2rstr_utf8(input) {
      var output = "";
      var i = -1;
      var x, y;
    
      while (++i < input.length) { /* Decode utf-16 surrogate pairs */
        x = input.charCodeAt(i);
        y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
        if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
          x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
          i++;
        }
    
        /* Encode output as utf-8 */
        if (x <= 0x7F) output += String.fromCharCode(x);
        else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
        else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
        else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
      }
      return output;
    }
    
    /*
     * Encode a string as utf-16
     */
    
    function str2rstr_utf16le(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
      return output;
    }
    
    function str2rstr_utf16be(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
      return output;
    }
    
    /*
     * Convert a raw string to an array of big-endian words
     * Characters >255 have their high-byte silently ignored.
     */
    
    function rstr2binb(input) {
      var output = Array(input.length >> 2);
      for (var i = 0; i < output.length; i++)
        output[i] = 0;
      for (var i = 0; i < input.length * 8; i += 8)
        output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (24 - i % 32);
      return output;
    }
    
    /*
     * Convert an array of big-endian words to a string
     */
    
    function binb2rstr(input) {
      var output = "";
      for (var i = 0; i < input.length * 32; i += 8)
        output += String.fromCharCode((input[i >> 5] >>> (24 - i % 32)) & 0xFF);
      return output;
    }
    
    /*
     * Calculate the SHA-512 of an array of big-endian dwords, and a bit length
     */
    var sha512_k;
    
    function binb_sha512(x, len) {
      if (sha512_k == undefined) {
        //SHA512 constants
        sha512_k = new Array(
          new int64(0x428a2f98, -685199838), new int64(0x71374491, 0x23ef65cd), new int64(-1245643825, -330482897), new int64(-373957723, -2121671748), new int64(0x3956c25b, -213338824), new int64(0x59f111f1, -1241133031), new int64(-1841331548, -1357295717), new int64(-1424204075, -630357736), new int64(-670586216, -1560083902), new int64(0x12835b01, 0x45706fbe), new int64(0x243185be, 0x4ee4b28c), new int64(0x550c7dc3, -704662302), new int64(0x72be5d74, -226784913), new int64(-2132889090, 0x3b1696b1), new int64(-1680079193, 0x25c71235), new int64(-1046744716, -815192428), new int64(-459576895, -1628353838), new int64(-272742522, 0x384f25e3), new int64(0xfc19dc6, -1953704523), new int64(0x240ca1cc, 0x77ac9c65), new int64(0x2de92c6f, 0x592b0275), new int64(0x4a7484aa, 0x6ea6e483), new int64(0x5cb0a9dc, -1119749164), new int64(0x76f988da, -2096016459), new int64(-1740746414, -295247957), new int64(-1473132947, 0x2db43210), new int64(-1341970488, -1728372417), new int64(-1084653625, -1091629340), new int64(-958395405, 0x3da88fc2), new int64(-710438585, -1828018395), new int64(0x6ca6351, -536640913), new int64(0x14292967, 0xa0e6e70), new int64(0x27b70a85, 0x46d22ffc), new int64(0x2e1b2138, 0x5c26c926), new int64(0x4d2c6dfc, 0x5ac42aed), new int64(0x53380d13, -1651133473), new int64(0x650a7354, -1951439906), new int64(0x766a0abb, 0x3c77b2a8), new int64(-2117940946, 0x47edaee6), new int64(-1838011259, 0x1482353b), new int64(-1564481375, 0x4cf10364), new int64(-1474664885, -1136513023), new int64(-1035236496, -789014639), new int64(-949202525, 0x654be30), new int64(-778901479, -688958952), new int64(-694614492, 0x5565a910), new int64(-200395387, 0x5771202a), new int64(0x106aa070, 0x32bbd1b8), new int64(0x19a4c116, -1194143544), new int64(0x1e376c08, 0x5141ab53), new int64(0x2748774c, -544281703), new int64(0x34b0bcb5, -509917016), new int64(0x391c0cb3, -976659869), new int64(0x4ed8aa4a, -482243893), new int64(0x5b9cca4f, 0x7763e373), new int64(0x682e6ff3, -692930397), new int64(0x748f82ee, 0x5defb2fc), new int64(0x78a5636f, 0x43172f60), new int64(-2067236844, -1578062990), new int64(-1933114872, 0x1a6439ec), new int64(-1866530822, 0x23631e28), new int64(-1538233109, -561857047), new int64(-1090935817, -1295615723), new int64(-965641998, -479046869), new int64(-903397682, -366583396), new int64(-779700025, 0x21c0c207), new int64(-354779690, -840897762), new int64(-176337025, -294727304), new int64(0x6f067aa, 0x72176fba), new int64(0xa637dc5, -1563912026), new int64(0x113f9804, -1090974290), new int64(0x1b710b35, 0x131c471b), new int64(0x28db77f5, 0x23047d84), new int64(0x32caab7b, 0x40c72493), new int64(0x3c9ebe0a, 0x15c9bebc), new int64(0x431d67c4, -1676669620), new int64(0x4cc5d4be, -885112138), new int64(0x597f299c, -60457430), new int64(0x5fcb6fab, 0x3ad6faec), new int64(0x6c44198c, 0x4a475817));
      }
    
      //Initial hash values
      var H = new Array(
        new int64(0x6a09e667, -205731576), new int64(-1150833019, -2067093701), new int64(0x3c6ef372, -23791573), new int64(-1521486534, 0x5f1d36f1), new int64(0x510e527f, -1377402159), new int64(-1694144372, 0x2b3e6c1f), new int64(0x1f83d9ab, -79577749), new int64(0x5be0cd19, 0x137e2179));
    
      var T1 = new int64(0, 0),
        T2 = new int64(0, 0),
        a = new int64(0, 0),
        b = new int64(0, 0),
        c = new int64(0, 0),
        d = new int64(0, 0),
        e = new int64(0, 0),
        f = new int64(0, 0),
        g = new int64(0, 0),
        h = new int64(0, 0),
    
    
        //Temporary variables not specified by the document
        s0 = new int64(0, 0),
        s1 = new int64(0, 0),
        Ch = new int64(0, 0),
        Maj = new int64(0, 0),
        r1 = new int64(0, 0),
        r2 = new int64(0, 0),
        r3 = new int64(0, 0);
      var j, i;
      var W = new Array(80);
      for (i = 0; i < 80; i++)
        W[i] = new int64(0, 0);
    
      // append padding to the source string. The format is described in the FIPS.
      x[len >> 5] |= 0x80 << (24 - (len & 0x1f));
      x[((len + 128 >> 10) << 5) + 31] = len;
    
      for (i = 0; i < x.length; i += 32) //32 dwords is the block size
      {
        int64copy(a, H[0]);
        int64copy(b, H[1]);
        int64copy(c, H[2]);
        int64copy(d, H[3]);
        int64copy(e, H[4]);
        int64copy(f, H[5]);
        int64copy(g, H[6]);
        int64copy(h, H[7]);
    
        for (j = 0; j < 16; j++) {
          W[j].h = x[i + 2 * j];
          W[j].l = x[i + 2 * j + 1];
        }
    
        for (j = 16; j < 80; j++) {
          //sigma1
          int64rrot(r1, W[j - 2], 19);
          int64revrrot(r2, W[j - 2], 29);
          int64shr(r3, W[j - 2], 6);
          s1.l = r1.l ^ r2.l ^ r3.l;
          s1.h = r1.h ^ r2.h ^ r3.h;
          //sigma0
          int64rrot(r1, W[j - 15], 1);
          int64rrot(r2, W[j - 15], 8);
          int64shr(r3, W[j - 15], 7);
          s0.l = r1.l ^ r2.l ^ r3.l;
          s0.h = r1.h ^ r2.h ^ r3.h;
    
          int64add4(W[j], s1, W[j - 7], s0, W[j - 16]);
        }
    
        for (j = 0; j < 80; j++) {
          //Ch
          Ch.l = (e.l & f.l) ^ (~e.l & g.l);
          Ch.h = (e.h & f.h) ^ (~e.h & g.h);
    
          //Sigma1
          int64rrot(r1, e, 14);
          int64rrot(r2, e, 18);
          int64revrrot(r3, e, 9);
          s1.l = r1.l ^ r2.l ^ r3.l;
          s1.h = r1.h ^ r2.h ^ r3.h;
    
          //Sigma0
          int64rrot(r1, a, 28);
          int64revrrot(r2, a, 2);
          int64revrrot(r3, a, 7);
          s0.l = r1.l ^ r2.l ^ r3.l;
          s0.h = r1.h ^ r2.h ^ r3.h;
    
          //Maj
          Maj.l = (a.l & b.l) ^ (a.l & c.l) ^ (b.l & c.l);
          Maj.h = (a.h & b.h) ^ (a.h & c.h) ^ (b.h & c.h);
    
          int64add5(T1, h, s1, Ch, sha512_k[j], W[j]);
          int64add(T2, s0, Maj);
    
          int64copy(h, g);
          int64copy(g, f);
          int64copy(f, e);
          int64add(e, d, T1);
          int64copy(d, c);
          int64copy(c, b);
          int64copy(b, a);
          int64add(a, T1, T2);
        }
        int64add(H[0], H[0], a);
        int64add(H[1], H[1], b);
        int64add(H[2], H[2], c);
        int64add(H[3], H[3], d);
        int64add(H[4], H[4], e);
        int64add(H[5], H[5], f);
        int64add(H[6], H[6], g);
        int64add(H[7], H[7], h);
      }
    
      //represent the hash as an array of 32-bit dwords
      var hash = new Array(16);
      for (i = 0; i < 8; i++) {
        hash[2 * i] = H[i].h;
        hash[2 * i + 1] = H[i].l;
      }
      return hash;
    }
    
    //A constructor for 64-bit numbers
    
    
    function int64(h, l) {
      this.h = h;
      this.l = l;
      //this.toString = int64toString;
    }
    
    //Copies src into dst, assuming both are 64-bit numbers
    
    
    function int64copy(dst, src) {
      dst.h = src.h;
      dst.l = src.l;
    }
    
    //Right-rotates a 64-bit number by shift
    //Won't handle cases of shift>=32
    //The function revrrot() is for that
    
    
    function int64rrot(dst, x, shift) {
      dst.l = (x.l >>> shift) | (x.h << (32 - shift));
      dst.h = (x.h >>> shift) | (x.l << (32 - shift));
    }
    
    //Reverses the dwords of the source and then rotates right by shift.
    //This is equivalent to rotation by 32+shift
    
    
    function int64revrrot(dst, x, shift) {
      dst.l = (x.h >>> shift) | (x.l << (32 - shift));
      dst.h = (x.l >>> shift) | (x.h << (32 - shift));
    }
    
    //Bitwise-shifts right a 64-bit number by shift
    //Won't handle shift>=32, but it's never needed in SHA512
    
    
    function int64shr(dst, x, shift) {
      dst.l = (x.l >>> shift) | (x.h << (32 - shift));
      dst.h = (x.h >>> shift);
    }
    
    //Adds two 64-bit numbers
    //Like the original implementation, does not rely on 32-bit operations
    
    
    function int64add(dst, x, y) {
      var w0 = (x.l & 0xffff) + (y.l & 0xffff);
      var w1 = (x.l >>> 16) + (y.l >>> 16) + (w0 >>> 16);
      var w2 = (x.h & 0xffff) + (y.h & 0xffff) + (w1 >>> 16);
      var w3 = (x.h >>> 16) + (y.h >>> 16) + (w2 >>> 16);
      dst.l = (w0 & 0xffff) | (w1 << 16);
      dst.h = (w2 & 0xffff) | (w3 << 16);
    }
    
    //Same, except with 4 addends. Works faster than adding them one by one.
    
    
    function int64add4(dst, a, b, c, d) {
      var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff);
      var w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (w0 >>> 16);
      var w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (w1 >>> 16);
      var w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (w2 >>> 16);
      dst.l = (w0 & 0xffff) | (w1 << 16);
      dst.h = (w2 & 0xffff) | (w3 << 16);
    }
    
    //Same, except with 5 addends
    
    
    function int64add5(dst, a, b, c, d, e) {
      var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff) + (e.l & 0xffff);
      var w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (e.l >>> 16) + (w0 >>> 16);
      var w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (e.h & 0xffff) + (w1 >>> 16);
      var w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (e.h >>> 16) + (w2 >>> 16);
      dst.l = (w0 & 0xffff) | (w1 << 16);
      dst.h = (w2 & 0xffff) | (w3 << 16);
    }
    var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
    
    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    
    function hex_md5(s) {
      return rstr2hex(rstr_md5(str2rstr_utf8(s)));
    }
    
    function b64_md5(s) {
      return rstr2b64(rstr_md5(str2rstr_utf8(s)));
    }
    
    function any_md5(s, e) {
      return rstr2any(rstr_md5(str2rstr_utf8(s)), e);
    }
    
    function hex_hmac_md5(k, d) {
      return rstr2hex(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function b64_hmac_md5(k, d) {
      return rstr2b64(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function any_hmac_md5(k, d, e) {
      return rstr2any(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)), e);
    }
    
    /*
     * Perform a simple self-test to see if the VM is working
     */
    
    function md5_vm_test() {
      return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72";
    }
    
    /*
     * Calculate the MD5 of a raw string
     */
    
    function rstr_md5(s) {
      return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));
    }
    
    /*
     * Calculate the HMAC-MD5, of a key and some data (raw strings)
     */
    
    function rstr_hmac_md5(key, data) {
      var bkey = rstr2binl(key);
      if (bkey.length > 16) bkey = binl_md5(bkey, key.length * 8);
    
      var ipad = Array(16),
        opad = Array(16);
      for (var i = 0; i < 16; i++) {
        ipad[i] = bkey[i] ^ 0x36363636;
        opad[i] = bkey[i] ^ 0x5C5C5C5C;
      }
    
      var hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
      return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));
    }
    
    /*
     * Convert a raw string to a hex string
     */
    
    function rstr2hex(input) {
      try {
        hexcase
      } catch (e) {
        hexcase = 0;
      }
      var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
      var output = "";
      var x;
      for (var i = 0; i < input.length; i++) {
        x = input.charCodeAt(i);
        output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
      }
      return output;
    }
    
    /*
     * Convert a raw string to a base-64 string
     */
    
    function rstr2b64(input) {
      try {
        b64pad
      } catch (e) {
        b64pad = '';
      }
      var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
      var output = "";
      var len = input.length;
      for (var i = 0; i < len; i += 3) {
        var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
        for (var j = 0; j < 4; j++) {
          if (i * 8 + j * 6 > input.length * 8) output += b64pad;
          else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
        }
      }
      return output;
    }
    
    /*
     * Convert a raw string to an arbitrary string encoding
     */
    
    function rstr2any(input, encoding) {
      var divisor = encoding.length;
      var i, j, q, x, quotient;
    
      /* Convert to an array of 16-bit big-endian values, forming the dividend */
      var dividend = Array(Math.ceil(input.length / 2));
      for (i = 0; i < dividend.length; i++) {
        dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
      }
    
      /*
       * Repeatedly perform a long division. The binary array forms the dividend,
       * the length of the encoding is the divisor. Once computed, the quotient
       * forms the dividend for the next step. All remainders are stored for later
       * use.
       */
      var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));
      var remainders = Array(full_length);
      for (j = 0; j < full_length; j++) {
        quotient = Array();
        x = 0;
        for (i = 0; i < dividend.length; i++) {
          x = (x << 16) + dividend[i];
          q = Math.floor(x / divisor);
          x -= q * divisor;
          if (quotient.length > 0 || q > 0) quotient[quotient.length] = q;
        }
        remainders[j] = x;
        dividend = quotient;
      }
    
      /* Convert the remainders to the output string */
      var output = "";
      for (i = remainders.length - 1; i >= 0; i--)
        output += encoding.charAt(remainders[i]);
    
      return output;
    }
    
    /*
     * Encode a string as utf-8.
     * For efficiency, this assumes the input is valid utf-16.
     */
    
    function str2rstr_utf8(input) {
      var output = "";
      var i = -1;
      var x, y;
    
      while (++i < input.length) { /* Decode utf-16 surrogate pairs */
        x = input.charCodeAt(i);
        y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
        if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
          x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
          i++;
        }
    
        /* Encode output as utf-8 */
        if (x <= 0x7F) output += String.fromCharCode(x);
        else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
        else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
        else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
      }
      return output;
    }
    
    /*
     * Encode a string as utf-16
     */
    
    function str2rstr_utf16le(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
      return output;
    }
    
    function str2rstr_utf16be(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
      return output;
    }
    
    /*
     * Convert a raw string to an array of little-endian words
     * Characters >255 have their high-byte silently ignored.
     */
    
    function rstr2binl(input) {
      var output = Array(input.length >> 2);
      for (var i = 0; i < output.length; i++)
        output[i] = 0;
      for (var i = 0; i < input.length * 8; i += 8)
        output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
      return output;
    }
    
    /*
     * Convert an array of little-endian words to a string
     */
    
    function binl2rstr(input) {
      var output = "";
      for (var i = 0; i < input.length * 32; i += 8)
        output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
      return output;
    }
    
    /*
     * Calculate the MD5 of an array of little-endian words, and a bit length.
     */
    
    function binl_md5(x, len) { /* append padding */
      x[len >> 5] |= 0x80 << ((len) % 32);
      x[(((len + 64) >>> 9) << 4) + 14] = len;
    
      var a = 1732584193;
      var b = -271733879;
      var c = -1732584194;
      var d = 271733878;
    
      for (var i = 0; i < x.length; i += 16) {
        var olda = a;
        var oldb = b;
        var oldc = c;
        var oldd = d;
    
        a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
        d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
        c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
        b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
        a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
        d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
        c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
        b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
        a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
        d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
        c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
        b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
        a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
        d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
        c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
        b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
    
        a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
        d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
        c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
        b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
        a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
        d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
        c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
        b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
        a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
        d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
        c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
        b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
        a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
        d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
        c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
        b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
    
        a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
        d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
        c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
        b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
        a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
        d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
        c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
        b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
        a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
        d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
        c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
        b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
        a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
        d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
        c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
        b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
    
        a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
        d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
        c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
        b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
        a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
        d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
        c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
        b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
        a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
        d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
        c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
        b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
        a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
        d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
        c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
        b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
    
        a = safe_add(a, olda);
        b = safe_add(b, oldb);
        c = safe_add(c, oldc);
        d = safe_add(d, oldd);
      }
      return Array(a, b, c, d);
    }
    
    /*
     * These functions implement the four basic operations the algorithm uses.
     */
    
    function md5_cmn(q, a, b, x, s, t) {
      return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
    }
    
    function md5_ff(a, b, c, d, x, s, t) {
      return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
    }
    
    function md5_gg(a, b, c, d, x, s, t) {
      return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
    }
    
    function md5_hh(a, b, c, d, x, s, t) {
      return md5_cmn(b ^ c ^ d, a, b, x, s, t);
    }
    
    function md5_ii(a, b, c, d, x, s, t) {
      return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
    }
    
    /*
     * Add integers, wrapping at 2^32. This uses 16-bit operations internally
     * to work around bugs in some JS interpreters.
     */
    
    function safe_add(x, y) {
      var lsw = (x & 0xFFFF) + (y & 0xFFFF);
      var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
      return (msw << 16) | (lsw & 0xFFFF);
    }
    
    /*
     * Bitwise rotate a 32-bit number to the left.
     */
    
    function bit_rol(num, cnt) {
      return (num << cnt) | (num >>> (32 - cnt));
    }
    var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
    
    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    
    function hex_sha1(s) {
      return rstr2hex(rstr_sha1(str2rstr_utf8(s)));
    }
    
    function b64_sha1(s) {
      return rstr2b64(rstr_sha1(str2rstr_utf8(s)));
    }
    
    function any_sha1(s, e) {
      return rstr2any(rstr_sha1(str2rstr_utf8(s)), e);
    }
    
    function hex_hmac_sha1(k, d) {
      return rstr2hex(rstr_hmac_sha1(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function b64_hmac_sha1(k, d) {
      return rstr2b64(rstr_hmac_sha1(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function any_hmac_sha1(k, d, e) {
      return rstr2any(rstr_hmac_sha1(str2rstr_utf8(k), str2rstr_utf8(d)), e);
    }
    
    /*
     * Perform a simple self-test to see if the VM is working
     */
    
    function sha1_vm_test() {
      return hex_sha1("abc").toLowerCase() == "a9993e364706816aba3e25717850c26c9cd0d89d";
    }
    
    /*
     * Calculate the SHA1 of a raw string
     */
    
    function rstr_sha1(s) {
      return binb2rstr(binb_sha1(rstr2binb(s), s.length * 8));
    }
    
    /*
     * Calculate the HMAC-SHA1 of a key and some data (raw strings)
     */
    
    function rstr_hmac_sha1(key, data) {
      var bkey = rstr2binb(key);
      if (bkey.length > 16) bkey = binb_sha1(bkey, key.length * 8);
    
      var ipad = Array(16),
        opad = Array(16);
      for (var i = 0; i < 16; i++) {
        ipad[i] = bkey[i] ^ 0x36363636;
        opad[i] = bkey[i] ^ 0x5C5C5C5C;
      }
    
      var hash = binb_sha1(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
      return binb2rstr(binb_sha1(opad.concat(hash), 512 + 160));
    }
    
    /*
     * Convert a raw string to a hex string
     */
    
    function rstr2hex(input) {
      try {
        hexcase
      } catch (e) {
        hexcase = 0;
      }
      var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
      var output = "";
      var x;
      for (var i = 0; i < input.length; i++) {
        x = input.charCodeAt(i);
        output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
      }
      return output;
    }
    
    /*
     * Convert a raw string to a base-64 string
     */
    
    function rstr2b64(input) {
      try {
        b64pad
      } catch (e) {
        b64pad = '';
      }
      var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
      var output = "";
      var len = input.length;
      for (var i = 0; i < len; i += 3) {
        var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
        for (var j = 0; j < 4; j++) {
          if (i * 8 + j * 6 > input.length * 8) output += b64pad;
          else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
        }
      }
      return output;
    }
    
    /*
     * Convert a raw string to an arbitrary string encoding
     */
    
    function rstr2any(input, encoding) {
      var divisor = encoding.length;
      var remainders = Array();
      var i, q, x, quotient;
    
      /* Convert to an array of 16-bit big-endian values, forming the dividend */
      var dividend = Array(Math.ceil(input.length / 2));
      for (i = 0; i < dividend.length; i++) {
        dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
      }
    
      /*
       * Repeatedly perform a long division. The binary array forms the dividend,
       * the length of the encoding is the divisor. Once computed, the quotient
       * forms the dividend for the next step. We stop when the dividend is zero.
       * All remainders are stored for later use.
       */
      while (dividend.length > 0) {
        quotient = Array();
        x = 0;
        for (i = 0; i < dividend.length; i++) {
          x = (x << 16) + dividend[i];
          q = Math.floor(x / divisor);
          x -= q * divisor;
          if (quotient.length > 0 || q > 0) quotient[quotient.length] = q;
        }
        remainders[remainders.length] = x;
        dividend = quotient;
      }
    
      /* Convert the remainders to the output string */
      var output = "";
      for (i = remainders.length - 1; i >= 0; i--)
        output += encoding.charAt(remainders[i]);
    
      /* Append leading zero equivalents */
      var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)))
      for (i = output.length; i < full_length; i++)
        output = encoding[0] + output;
    
      return output;
    }
    
    /*
     * Encode a string as utf-8.
     * For efficiency, this assumes the input is valid utf-16.
     */
    
    function str2rstr_utf8(input) {
      var output = "";
      var i = -1;
      var x, y;
    
      while (++i < input.length) { /* Decode utf-16 surrogate pairs */
        x = input.charCodeAt(i);
        y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
        if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
          x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
          i++;
        }
    
        /* Encode output as utf-8 */
        if (x <= 0x7F) output += String.fromCharCode(x);
        else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
        else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
        else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
      }
      return output;
    }
    
    /*
     * Encode a string as utf-16
     */
    
    function str2rstr_utf16le(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
      return output;
    }
    
    function str2rstr_utf16be(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
      return output;
    }
    
    /*
     * Convert a raw string to an array of big-endian words
     * Characters >255 have their high-byte silently ignored.
     */
    
    function rstr2binb(input) {
      var output = Array(input.length >> 2);
      for (var i = 0; i < output.length; i++)
        output[i] = 0;
      for (var i = 0; i < input.length * 8; i += 8)
        output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (24 - i % 32);
      return output;
    }
    
    /*
     * Convert an array of big-endian words to a string
     */
    
    function binb2rstr(input) {
      var output = "";
      for (var i = 0; i < input.length * 32; i += 8)
        output += String.fromCharCode((input[i >> 5] >>> (24 - i % 32)) & 0xFF);
      return output;
    }
    
    /*
     * Calculate the SHA-1 of an array of big-endian words, and a bit length
     */
    
    function binb_sha1(x, len) { /* append padding */
      x[len >> 5] |= 0x80 << (24 - len % 32);
      x[((len + 64 >> 9) << 4) + 15] = len;
    
      var w = Array(80);
      var a = 1732584193;
      var b = -271733879;
      var c = -1732584194;
      var d = 271733878;
      var e = -1009589776;
    
      for (var i = 0; i < x.length; i += 16) {
        var olda = a;
        var oldb = b;
        var oldc = c;
        var oldd = d;
        var olde = e;
    
        for (var j = 0; j < 80; j++) {
          if (j < 16) w[j] = x[i + j];
          else w[j] = bit_rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
          var t = safe_add(safe_add(bit_rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
          e = d;
          d = c;
          c = bit_rol(b, 30);
          b = a;
          a = t;
        }
    
        a = safe_add(a, olda);
        b = safe_add(b, oldb);
        c = safe_add(c, oldc);
        d = safe_add(d, oldd);
        e = safe_add(e, olde);
      }
      return Array(a, b, c, d, e);
    
    }
    
    /*
     * Perform the appropriate triplet combination function for the current
     * iteration
     */
    
    function sha1_ft(t, b, c, d) {
      if (t < 20) return (b & c) | ((~b) & d);
      if (t < 40) return b ^ c ^ d;
      if (t < 60) return (b & c) | (b & d) | (c & d);
      return b ^ c ^ d;
    }
    
    /*
     * Determine the appropriate additive constant for the current iteration
     */
    
    function sha1_kt(t) {
      return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : (t < 60) ? -1894007588 : -899497514;
    }
    
    /*
     * Add integers, wrapping at 2^32. This uses 16-bit operations internally
     * to work around bugs in some JS interpreters.
     */
    
    function safe_add(x, y) {
      var lsw = (x & 0xFFFF) + (y & 0xFFFF);
      var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
      return (msw << 16) | (lsw & 0xFFFF);
    }
    
    /*
     * Bitwise rotate a 32-bit number to the left.
     */
    
    function bit_rol(num, cnt) {
      return (num << cnt) | (num >>> (32 - cnt));
    }
    var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
    
    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    
    function hex_sha256(s) {
      return rstr2hex(rstr_sha256(str2rstr_utf8(s)));
    }
    
    function b64_sha256(s) {
      return rstr2b64(rstr_sha256(str2rstr_utf8(s)));
    }
    
    function any_sha256(s, e) {
      return rstr2any(rstr_sha256(str2rstr_utf8(s)), e);
    }
    
    function hex_hmac_sha256(k, d) {
      return rstr2hex(rstr_hmac_sha256(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function b64_hmac_sha256(k, d) {
      return rstr2b64(rstr_hmac_sha256(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function any_hmac_sha256(k, d, e) {
      return rstr2any(rstr_hmac_sha256(str2rstr_utf8(k), str2rstr_utf8(d)), e);
    }
    
    /*
     * Perform a simple self-test to see if the VM is working
     */
    
    function sha256_vm_test() {
      return hex_sha256("abc").toLowerCase() == "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad";
    }
    
    /*
     * Calculate the sha256 of a raw string
     */
    
    function rstr_sha256(s) {
      return binb2rstr(binb_sha256(rstr2binb(s), s.length * 8));
    }
    
    /*
     * Calculate the HMAC-sha256 of a key and some data (raw strings)
     */
    
    function rstr_hmac_sha256(key, data) {
      var bkey = rstr2binb(key);
      if (bkey.length > 16) bkey = binb_sha256(bkey, key.length * 8);
    
      var ipad = Array(16),
        opad = Array(16);
      for (var i = 0; i < 16; i++) {
        ipad[i] = bkey[i] ^ 0x36363636;
        opad[i] = bkey[i] ^ 0x5C5C5C5C;
      }
    
      var hash = binb_sha256(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
      return binb2rstr(binb_sha256(opad.concat(hash), 512 + 256));
    }
    
    /*
     * Convert a raw string to a hex string
     */
    
    function rstr2hex(input) {
      try {
        hexcase
      } catch (e) {
        hexcase = 0;
      }
      var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
      var output = "";
      var x;
      for (var i = 0; i < input.length; i++) {
        x = input.charCodeAt(i);
        output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
      }
      return output;
    }
    
    /*
     * Convert a raw string to a base-64 string
     */
    
    function rstr2b64(input) {
      try {
        b64pad
      } catch (e) {
        b64pad = '';
      }
      var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
      var output = "";
      var len = input.length;
      for (var i = 0; i < len; i += 3) {
        var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
        for (var j = 0; j < 4; j++) {
          if (i * 8 + j * 6 > input.length * 8) output += b64pad;
          else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
        }
      }
      return output;
    }
    
    /*
     * Convert a raw string to an arbitrary string encoding
     */
    
    function rstr2any(input, encoding) {
      var divisor = encoding.length;
      var remainders = Array();
      var i, q, x, quotient;
    
      /* Convert to an array of 16-bit big-endian values, forming the dividend */
      var dividend = Array(Math.ceil(input.length / 2));
      for (i = 0; i < dividend.length; i++) {
        dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
      }
    
      /*
       * Repeatedly perform a long division. The binary array forms the dividend,
       * the length of the encoding is the divisor. Once computed, the quotient
       * forms the dividend for the next step. We stop when the dividend is zero.
       * All remainders are stored for later use.
       */
      while (dividend.length > 0) {
        quotient = Array();
        x = 0;
        for (i = 0; i < dividend.length; i++) {
          x = (x << 16) + dividend[i];
          q = Math.floor(x / divisor);
          x -= q * divisor;
          if (quotient.length > 0 || q > 0) quotient[quotient.length] = q;
        }
        remainders[remainders.length] = x;
        dividend = quotient;
      }
    
      /* Convert the remainders to the output string */
      var output = "";
      for (i = remainders.length - 1; i >= 0; i--)
        output += encoding.charAt(remainders[i]);
    
      /* Append leading zero equivalents */
      var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)))
      for (i = output.length; i < full_length; i++)
        output = encoding[0] + output;
    
      return output;
    }
    
    /*
     * Encode a string as utf-8.
     * For efficiency, this assumes the input is valid utf-16.
     */
    
    function str2rstr_utf8(input) {
      var output = "";
      var i = -1;
      var x, y;
    
      while (++i < input.length) { /* Decode utf-16 surrogate pairs */
        x = input.charCodeAt(i);
        y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
        if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
          x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
          i++;
        }
    
        /* Encode output as utf-8 */
        if (x <= 0x7F) output += String.fromCharCode(x);
        else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
        else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
        else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
      }
      return output;
    }
    
    /*
     * Encode a string as utf-16
     */
    
    function str2rstr_utf16le(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
      return output;
    }
    
    function str2rstr_utf16be(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
      return output;
    }
    
    /*
     * Convert a raw string to an array of big-endian words
     * Characters >255 have their high-byte silently ignored.
     */
    
    function rstr2binb(input) {
      var output = Array(input.length >> 2);
      for (var i = 0; i < output.length; i++)
        output[i] = 0;
      for (var i = 0; i < input.length * 8; i += 8)
        output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (24 - i % 32);
      return output;
    }
    
    /*
     * Convert an array of big-endian words to a string
     */
    
    function binb2rstr(input) {
      var output = "";
      for (var i = 0; i < input.length * 32; i += 8)
        output += String.fromCharCode((input[i >> 5] >>> (24 - i % 32)) & 0xFF);
      return output;
    }
    
    /*
     * Main sha256 function, with its support functions
     */
    
    function sha256_S(X, n) {
      return (X >>> n) | (X << (32 - n));
    }
    
    function sha256_R(X, n) {
      return (X >>> n);
    }
    
    function sha256_Ch(x, y, z) {
      return ((x & y) ^ ((~x) & z));
    }
    
    function sha256_Maj(x, y, z) {
      return ((x & y) ^ (x & z) ^ (y & z));
    }
    
    function sha256_Sigma0256(x) {
      return (sha256_S(x, 2) ^ sha256_S(x, 13) ^ sha256_S(x, 22));
    }
    
    function sha256_Sigma1256(x) {
      return (sha256_S(x, 6) ^ sha256_S(x, 11) ^ sha256_S(x, 25));
    }
    
    function sha256_Gamma0256(x) {
      return (sha256_S(x, 7) ^ sha256_S(x, 18) ^ sha256_R(x, 3));
    }
    
    function sha256_Gamma1256(x) {
      return (sha256_S(x, 17) ^ sha256_S(x, 19) ^ sha256_R(x, 10));
    }
    
    function sha256_Sigma0512(x) {
      return (sha256_S(x, 28) ^ sha256_S(x, 34) ^ sha256_S(x, 39));
    }
    
    function sha256_Sigma1512(x) {
      return (sha256_S(x, 14) ^ sha256_S(x, 18) ^ sha256_S(x, 41));
    }
    
    function sha256_Gamma0512(x) {
      return (sha256_S(x, 1) ^ sha256_S(x, 8) ^ sha256_R(x, 7));
    }
    
    function sha256_Gamma1512(x) {
      return (sha256_S(x, 19) ^ sha256_S(x, 61) ^ sha256_R(x, 6));
    }
    
    var sha256_K = new Array(
      1116352408, 1899447441, -1245643825, -373957723, 961987163, 1508970993, -1841331548, -1424204075, -670586216, 310598401, 607225278, 1426881987, 1925078388, -2132889090, -1680079193, -1046744716, -459576895, -272742522, 264347078, 604807628, 770255983, 1249150122, 1555081692, 1996064986, -1740746414, -1473132947, -1341970488, -1084653625, -958395405, -710438585, 113926993, 338241895, 666307205, 773529912, 1294757372, 1396182291, 1695183700, 1986661051, -2117940946, -1838011259, -1564481375, -1474664885, -1035236496, -949202525, -778901479, -694614492, -200395387, 275423344, 430227734, 506948616, 659060556, 883997877, 958139571, 1322822218, 1537002063, 1747873779, 1955562222, 2024104815, -2067236844, -1933114872, -1866530822, -1538233109, -1090935817, -965641998);
    
    function binb_sha256(m, l) {
      var HASH = new Array(1779033703, -1150833019, 1013904242, -1521486534, 1359893119, -1694144372, 528734635, 1541459225);
      var W = new Array(64);
      var a, b, c, d, e, f, g, h;
      var i, j, T1, T2;
    
      /* append padding */
      m[l >> 5] |= 0x80 << (24 - l % 32);
      m[((l + 64 >> 9) << 4) + 15] = l;
    
      for (i = 0; i < m.length; i += 16) {
        a = HASH[0];
        b = HASH[1];
        c = HASH[2];
        d = HASH[3];
        e = HASH[4];
        f = HASH[5];
        g = HASH[6];
        h = HASH[7];
    
        for (j = 0; j < 64; j++) {
          if (j < 16) W[j] = m[j + i];
          else W[j] = safe_add(safe_add(safe_add(sha256_Gamma1256(W[j - 2]), W[j - 7]), sha256_Gamma0256(W[j - 15])), W[j - 16]);
    
          T1 = safe_add(safe_add(safe_add(safe_add(h, sha256_Sigma1256(e)), sha256_Ch(e, f, g)), sha256_K[j]), W[j]);
          T2 = safe_add(sha256_Sigma0256(a), sha256_Maj(a, b, c));
          h = g;
          g = f;
          f = e;
          e = safe_add(d, T1);
          d = c;
          c = b;
          b = a;
          a = safe_add(T1, T2);
        }
    
        HASH[0] = safe_add(a, HASH[0]);
        HASH[1] = safe_add(b, HASH[1]);
        HASH[2] = safe_add(c, HASH[2]);
        HASH[3] = safe_add(d, HASH[3]);
        HASH[4] = safe_add(e, HASH[4]);
        HASH[5] = safe_add(f, HASH[5]);
        HASH[6] = safe_add(g, HASH[6]);
        HASH[7] = safe_add(h, HASH[7]);
      }
      return HASH;
    }
    
    function safe_add(x, y) {
      var lsw = (x & 0xFFFF) + (y & 0xFFFF);
      var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
      return (msw << 16) | (lsw & 0xFFFF);
    }
    var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
    
    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    
    function hex_rmd160(s) {
      return rstr2hex(rstr_rmd160(str2rstr_utf8(s)));
    }
    
    function b64_rmd160(s) {
      return rstr2b64(rstr_rmd160(str2rstr_utf8(s)));
    }
    
    function any_rmd160(s, e) {
      return rstr2any(rstr_rmd160(str2rstr_utf8(s)), e);
    }
    
    function hex_hmac_rmd160(k, d) {
      return rstr2hex(rstr_hmac_rmd160(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function b64_hmac_rmd160(k, d) {
      return rstr2b64(rstr_hmac_rmd160(str2rstr_utf8(k), str2rstr_utf8(d)));
    }
    
    function any_hmac_rmd160(k, d, e) {
      return rstr2any(rstr_hmac_rmd160(str2rstr_utf8(k), str2rstr_utf8(d)), e);
    }
    
    /*
     * Perform a simple self-test to see if the VM is working
     */
    
    function rmd160_vm_test() {
      return hex_rmd160("abc").toLowerCase() == "8eb208f7e05d987a9b044a8e98c6b087f15a0bfc";
    }
    
    /*
     * Calculate the rmd160 of a raw string
     */
    
    function rstr_rmd160(s) {
      return binl2rstr(binl_rmd160(rstr2binl(s), s.length * 8));
    }
    
    /*
     * Calculate the HMAC-rmd160 of a key and some data (raw strings)
     */
    
    function rstr_hmac_rmd160(key, data) {
      var bkey = rstr2binl(key);
      if (bkey.length > 16) bkey = binl_rmd160(bkey, key.length * 8);
    
      var ipad = Array(16),
        opad = Array(16);
      for (var i = 0; i < 16; i++) {
        ipad[i] = bkey[i] ^ 0x36363636;
        opad[i] = bkey[i] ^ 0x5C5C5C5C;
      }
    
      var hash = binl_rmd160(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
      return binl2rstr(binl_rmd160(opad.concat(hash), 512 + 160));
    }
    
    /*
     * Convert a raw string to a hex string
     */
    
    function rstr2hex(input) {
      try {
        hexcase
      } catch (e) {
        hexcase = 0;
      }
      var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
      var output = "";
      var x;
      for (var i = 0; i < input.length; i++) {
        x = input.charCodeAt(i);
        output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
      }
      return output;
    }
    
    /*
     * Convert a raw string to a base-64 string
     */
    
    function rstr2b64(input) {
      try {
        b64pad
      } catch (e) {
        b64pad = '';
      }
      var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
      var output = "";
      var len = input.length;
      for (var i = 0; i < len; i += 3) {
        var triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
        for (var j = 0; j < 4; j++) {
          if (i * 8 + j * 6 > input.length * 8) output += b64pad;
          else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
        }
      }
      return output;
    }
    
    /*
     * Convert a raw string to an arbitrary string encoding
     */
    
    function rstr2any(input, encoding) {
      var divisor = encoding.length;
      var remainders = Array();
      var i, q, x, quotient;
    
      /* Convert to an array of 16-bit big-endian values, forming the dividend */
      var dividend = Array(Math.ceil(input.length / 2));
      for (i = 0; i < dividend.length; i++) {
        dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
      }
    
      /*
       * Repeatedly perform a long division. The binary array forms the dividend,
       * the length of the encoding is the divisor. Once computed, the quotient
       * forms the dividend for the next step. We stop when the dividend is zero.
       * All remainders are stored for later use.
       */
      while (dividend.length > 0) {
        quotient = Array();
        x = 0;
        for (i = 0; i < dividend.length; i++) {
          x = (x << 16) + dividend[i];
          q = Math.floor(x / divisor);
          x -= q * divisor;
          if (quotient.length > 0 || q > 0) quotient[quotient.length] = q;
        }
        remainders[remainders.length] = x;
        dividend = quotient;
      }
    
      /* Convert the remainders to the output string */
      var output = "";
      for (i = remainders.length - 1; i >= 0; i--)
        output += encoding.charAt(remainders[i]);
    
      /* Append leading zero equivalents */
      var full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)))
      for (i = output.length; i < full_length; i++)
        output = encoding[0] + output;
    
      return output;
    }
    
    /*
     * Encode a string as utf-8.
     * For efficiency, this assumes the input is valid utf-16.
     */
    
    function str2rstr_utf8(input) {
      var output = "";
      var i = -1;
      var x, y;
    
      while (++i < input.length) { /* Decode utf-16 surrogate pairs */
        x = input.charCodeAt(i);
        y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
        if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
          x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
          i++;
        }
    
        /* Encode output as utf-8 */
        if (x <= 0x7F) output += String.fromCharCode(x);
        else if (x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F), 0x80 | (x & 0x3F));
        else if (x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
        else if (x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
      }
      return output;
    }
    
    /*
     * Encode a string as utf-16
     */
    
    function str2rstr_utf16le(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
      return output;
    }
    
    function str2rstr_utf16be(input) {
      var output = "";
      for (var i = 0; i < input.length; i++)
        output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
      return output;
    }
    
    /*
     * Convert a raw string to an array of little-endian words
     * Characters >255 have their high-byte silently ignored.
     */
    
    function rstr2binl(input) {
      var output = Array(input.length >> 2);
      for (var i = 0; i < output.length; i++)
        output[i] = 0;
      for (var i = 0; i < input.length * 8; i += 8)
        output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
      return output;
    }
    
    /*
     * Convert an array of little-endian words to a string
     */
    
    function binl2rstr(input) {
      var output = "";
      for (var i = 0; i < input.length * 32; i += 8)
        output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
      return output;
    }
    
    /*
     * Calculate the RIPE-MD160 of an array of little-endian words, and a bit length.
     */
    
    function binl_rmd160(x, len) { /* append padding */
      x[len >> 5] |= 0x80 << (len % 32);
      x[(((len + 64) >>> 9) << 4) + 14] = len;
    
      var h0 = 0x67452301;
      var h1 = 0xefcdab89;
      var h2 = 0x98badcfe;
      var h3 = 0x10325476;
      var h4 = 0xc3d2e1f0;
    
      for (var i = 0; i < x.length; i += 16) {
        var T;
        var A1 = h0,
          B1 = h1,
          C1 = h2,
          D1 = h3,
          E1 = h4;
        var A2 = h0,
          B2 = h1,
          C2 = h2,
          D2 = h3,
          E2 = h4;
        for (var j = 0; j <= 79; ++j) {
          T = safe_add(A1, rmd160_f(j, B1, C1, D1));
          T = safe_add(T, x[i + rmd160_r1[j]]);
          T = safe_add(T, rmd160_K1(j));
          T = safe_add(bit_rol(T, rmd160_s1[j]), E1);
          A1 = E1;
          E1 = D1;
          D1 = bit_rol(C1, 10);
          C1 = B1;
          B1 = T;
          T = safe_add(A2, rmd160_f(79 - j, B2, C2, D2));
          T = safe_add(T, x[i + rmd160_r2[j]]);
          T = safe_add(T, rmd160_K2(j));
          T = safe_add(bit_rol(T, rmd160_s2[j]), E2);
          A2 = E2;
          E2 = D2;
          D2 = bit_rol(C2, 10);
          C2 = B2;
          B2 = T;
        }
        T = safe_add(h1, safe_add(C1, D2));
        h1 = safe_add(h2, safe_add(D1, E2));
        h2 = safe_add(h3, safe_add(E1, A2));
        h3 = safe_add(h4, safe_add(A1, B2));
        h4 = safe_add(h0, safe_add(B1, C2));
        h0 = T;
      }
      return [h0, h1, h2, h3, h4];
    }
    
    function rmd160_f(j, x, y, z) {
      return (0 <= j && j <= 15) ? (x ^ y ^ z) : (16 <= j && j <= 31) ? (x & y) | (~x & z) : (32 <= j && j <= 47) ? (x | ~y) ^ z : (48 <= j && j <= 63) ? (x & z) | (y & ~z) : (64 <= j && j <= 79) ? x ^ (y | ~z) : "rmd160_f: j out of range";
    }
    
    function rmd160_K1(j) {
      return (0 <= j && j <= 15) ? 0x00000000 : (16 <= j && j <= 31) ? 0x5a827999 : (32 <= j && j <= 47) ? 0x6ed9eba1 : (48 <= j && j <= 63) ? 0x8f1bbcdc : (64 <= j && j <= 79) ? 0xa953fd4e : "rmd160_K1: j out of range";
    }
    
    function rmd160_K2(j) {
      return (0 <= j && j <= 15) ? 0x50a28be6 : (16 <= j && j <= 31) ? 0x5c4dd124 : (32 <= j && j <= 47) ? 0x6d703ef3 : (48 <= j && j <= 63) ? 0x7a6d76e9 : (64 <= j && j <= 79) ? 0x00000000 : "rmd160_K2: j out of range";
    }
    var rmd160_r1 = [
      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
    ];
    var rmd160_r2 = [
      5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
    ];
    var rmd160_s1 = [
      11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
    ];
    var rmd160_s2 = [
      8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
    ];
    
    /*
     * Add integers, wrapping at 2^32. This uses 16-bit operations internally
     * to work around bugs in some JS interpreters.
     */
    
    function safe_add(x, y) {
      var lsw = (x & 0xFFFF) + (y & 0xFFFF);
      var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
      return (msw << 16) | (lsw & 0xFFFF);
    }
    
    /*
     * Bitwise rotate a 32-bit number to the left.
     */
    
    function bit_rol(num, cnt) {
      return (num << cnt) | (num >>> (32 - cnt));
    }

Test runner

Ready to run.

Testing in
TestOps/sec
String SHA1
rstr_sha1("abc")
ready
String HMAC-SHA1
rstr_hmac_sha1("abc", "abc")
ready
String RMD160
rstr_rmd160("abc")
ready
String HMAC-RMD160
rstr_hmac_rmd160("abc", "abc")
ready
String MD5
rstr_md5("abc")
ready
String HMAC-MD5
rstr_hmac_md5("abc", "abc")
ready
SipHash
SipHash.hash([0, 0, 0, 0], "abc")
ready
SipHash HMAC
SipHash.hash(SipHash.string16_to_key("abc"), "abc")
ready
BLAKE2s
var h = new BLAKE2s(32);
h.update("abc");
h.hexDigest();
ready
BLAKE2s HMAC
var h = new BLAKE2s(32, "abc");
h.update("abc");
h.hexDigest();
ready

Revisions

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