Source: codecHex.js

  1. /** @fileOverview Bit array codec implementations.
  2.  *
  3.  * @author Emily Stark
  4.  * @author Mike Hamburg
  5.  * @author Dan Boneh
  6.  */
  8. /**
  9.  * Hexadecimal
  10.  * @namespace
  11.  */
  12. sjcl.codec.hex = {
  13.   /** Convert from a bitArray to a hex string. */
  14.   fromBits: function (arr) {
  15.     var out = "", i;
  16.     for (i=0; i<arr.length; i++) {
  17.       out += ((arr[i]|0)+0xF00000000000).toString(16).substr(4);
  18.     }
  19.     return out.substr(0, sjcl.bitArray.bitLength(arr)/4);//.replace(/(.{8})/g, "$1 ");
  20.   },
  21.   /** Convert from a hex string to a bitArray. */
  22.   toBits: function (str) {
  23.     var i, out=[], len;
  24.     str = str.replace(/\s|0x/g, "");
  25.     len = str.length;
  26.     str = str + "00000000";
  27.     for (i=0; i<str.length; i+=8) {
  28.       out.push(parseInt(str.substr(i,8),16)^0);
  29.     }
  30.     return sjcl.bitArray.clamp(out, len*4);
  31.   }
  32. };