public static function hashBinary( s:ByteArray ):String {
            // initialize the md buffers
            var a:int = 1732584193;
            var b:int = -271733879;
            var c:int = -1732584194;
            var d:int = 271733878;

            // variables to store previous values
            var aa:int;
            var bb:int;
            var cc:int;
            var dd:int;

            // create the blocks from the string and
            // save the length as a local var to reduce
            // lookup in the loop below
            var x:Array = createBlocks( s );
            var len:int = x.length;

            // loop over all of the blocks
            for ( var i:int = 0; i < len; i += 16) {
                // save previous values
                aa = a;
                bb = b;
                cc = c;
                dd = d;

                // Round 1
                a = ff( a, b, c, d, x[int(i+ 0)],  7, -680876936 );     // 1
                d = ff( d, a, b, c, x[int(i+ 1)], 12, -389564586 ); // 2
                c = ff( c, d, a, b, x[int(i+ 2)], 17, 606105819 );  // 3
                b = ff( b, c, d, a, x[int(i+ 3)], 22, -1044525330 );    // 4
                a = ff( a, b, c, d, x[int(i+ 4)],  7, -176418897 );     // 5
                d = ff( d, a, b, c, x[int(i+ 5)], 12, 1200080426 );     // 6
                c = ff( c, d, a, b, x[int(i+ 6)], 17, -1473231341 );    // 7
                b = ff( b, c, d, a, x[int(i+ 7)], 22, -45705983 );  // 8
                a = ff( a, b, c, d, x[int(i+ 8)],  7, 1770035416 );     // 9
                d = ff( d, a, b, c, x[int(i+ 9)], 12, -1958414417 );    // 10
                c = ff( c, d, a, b, x[int(i+10)], 17, -42063 );         // 11
                b = ff( b, c, d, a, x[int(i+11)], 22, -1990404162 );    // 12
                a = ff( a, b, c, d, x[int(i+12)],  7, 1804603682 );     // 13
                d = ff( d, a, b, c, x[int(i+13)], 12, -40341101 );  // 14
                c = ff( c, d, a, b, x[int(i+14)], 17, -1502002290 );    // 15
                b = ff( b, c, d, a, x[int(i+15)], 22, 1236535329 );     // 16

                // Round 2
                a = gg( a, b, c, d, x[int(i+ 1)],  5, -165796510 );     // 17
                d = gg( d, a, b, c, x[int(i+ 6)],  9, -1069501632 );    // 18
                c = gg( c, d, a, b, x[int(i+11)], 14, 643717713 );  // 19
                b = gg( b, c, d, a, x[int(i+ 0)], 20, -373897302 );     // 20
                a = gg( a, b, c, d, x[int(i+ 5)],  5, -701558691 );     // 21
                d = gg( d, a, b, c, x[int(i+10)],  9, 38016083 );   // 22
                c = gg( c, d, a, b, x[int(i+15)], 14, -660478335 );     // 23
                b = gg( b, c, d, a, x[int(i+ 4)], 20, -405537848 );     // 24
                a = gg( a, b, c, d, x[int(i+ 9)],  5, 568446438 );  // 25
                d = gg( d, a, b, c, x[int(i+14)],  9, -1019803690 );    // 26
                c = gg( c, d, a, b, x[int(i+ 3)], 14, -187363961 );     // 27
                b = gg( b, c, d, a, x[int(i+ 8)], 20, 1163531501 );     // 28
                a = gg( a, b, c, d, x[int(i+13)],  5, -1444681467 );    // 29
                d = gg( d, a, b, c, x[int(i+ 2)],  9, -51403784 );  // 30
                c = gg( c, d, a, b, x[int(i+ 7)], 14, 1735328473 );     // 31
                b = gg( b, c, d, a, x[int(i+12)], 20, -1926607734 );    // 32

                // Round 3
                a = hh( a, b, c, d, x[int(i+ 5)],  4, -378558 );    // 33
                d = hh( d, a, b, c, x[int(i+ 8)], 11, -2022574463 );    // 34
                c = hh( c, d, a, b, x[int(i+11)], 16, 1839030562 );     // 35
                b = hh( b, c, d, a, x[int(i+14)], 23, -35309556 );  // 36
                a = hh( a, b, c, d, x[int(i+ 1)],  4, -1530992060 );    // 37
                d = hh( d, a, b, c, x[int(i+ 4)], 11, 1272893353 );     // 38
                c = hh( c, d, a, b, x[int(i+ 7)], 16, -155497632 );     // 39
                b = hh( b, c, d, a, x[int(i+10)], 23, -1094730640 );    // 40
                a = hh( a, b, c, d, x[int(i+13)],  4, 681279174 );  // 41
                d = hh( d, a, b, c, x[int(i+ 0)], 11, -358537222 );     // 42
                c = hh( c, d, a, b, x[int(i+ 3)], 16, -722521979 );     // 43
                b = hh( b, c, d, a, x[int(i+ 6)], 23, 76029189 );   // 44
                a = hh( a, b, c, d, x[int(i+ 9)],  4, -640364487 );     // 45
                d = hh( d, a, b, c, x[int(i+12)], 11, -421815835 );     // 46
                c = hh( c, d, a, b, x[int(i+15)], 16, 530742520 );  // 47
                b = hh( b, c, d, a, x[int(i+ 2)], 23, -995338651 );     // 48

                // Round 4
                a = ii( a, b, c, d, x[int(i+ 0)],  6, -198630844 );     // 49
                d = ii( d, a, b, c, x[int(i+ 7)], 10, 1126891415 );     // 50
                c = ii( c, d, a, b, x[int(i+14)], 15, -1416354905 );    // 51
                b = ii( b, c, d, a, x[int(i+ 5)], 21, -57434055 );  // 52
                a = ii( a, b, c, d, x[int(i+12)],  6, 1700485571 );     // 53
                d = ii( d, a, b, c, x[int(i+ 3)], 10, -1894986606 );    // 54
                c = ii( c, d, a, b, x[int(i+10)], 15, -1051523 );   // 55
                b = ii( b, c, d, a, x[int(i+ 1)], 21, -2054922799 );    // 56
                a = ii( a, b, c, d, x[int(i+ 8)],  6, 1873313359 );     // 57
                d = ii( d, a, b, c, x[int(i+15)], 10, -30611744 );  // 58
                c = ii( c, d, a, b, x[int(i+ 6)], 15, -1560198380 );    // 59
                b = ii( b, c, d, a, x[int(i+13)], 21, 1309151649 );     // 60
                a = ii( a, b, c, d, x[int(i+ 4)],  6, -145523070 );     // 61
                d = ii( d, a, b, c, x[int(i+11)], 10, -1120210379 );    // 62
                c = ii( c, d, a, b, x[int(i+ 2)], 15, 718787259 );  // 63
                b = ii( b, c, d, a, x[int(i+ 9)], 21, -343485551 );     // 64

                a += aa;
                b += bb;
                c += cc;
                d += dd;
            }
            digest = new ByteArray()
            digest.writeInt(a);
            digest.writeInt(b);
            digest.writeInt(c);
            digest.writeInt(d);
            digest.position = 0;
            // Finish up by concatening the buffers with their hex output
            return IntUtil.toHex( a ) + IntUtil.toHex( b ) + IntUtil.toHex( c ) + IntUtil.toHex( d );
        }