[safari] Issue 4902 - Partially revert d5be57b68f91 for Safari compatibility

lib/sha1.js

+/**
+ *
+ *  Secure Hash Algorithm (SHA1)
+ *  http://www.webtoolkit.info/
+ *
+ **/
+
+function SHA1(msg) {
+
+        function rotate_left(n,s) {
+                var t4 = ( n<<s ) | (n>>>(32-s));
+                return t4;
+        };
+
+        function lsb_hex(val) {
+                var str="";
+                var i;
+                var vh;
+                var vl;
+
+                for( i=0; i<=6; i+=2 ) {
+                        vh = (val>>>(i*4+4))&0x0f;
+                        vl = (val>>>(i*4))&0x0f;
+                        str += vh.toString(16) + vl.toString(16);
+                }
+                return str;
+        };
+
+        function cvt_hex(val) {
+                var str="";
+                var i;
+                var v;
+
+                for( i=7; i>=0; i-- ) {
+                        v = (val>>>(i*4))&0x0f;
+                        str += v.toString(16);
+                }
+                return str;
+        };
+
+
+        function Utf8Encode(string) {
+                string = string.replace(/\r\n/g,"\n");
+                var utftext = "";
+
+                for (var n = 0; n < string.length; n++) {
+
+                        var c = string.charCodeAt(n);
+
+                        if (c < 128) {
+                                utftext += String.fromCharCode(c);
+                        }
+                        else if((c > 127) && (c < 2048)) {
+                                utftext += String.fromCharCode((c >> 6) | 192);
+                                utftext += String.fromCharCode((c & 63) | 128);
+                        }
+                        else {
+                                utftext += String.fromCharCode((c >> 12) | 224);
+                                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
+                                utftext += String.fromCharCode((c & 63) | 128);
+                        }
+
+                }
+
+                return utftext;
+        };
+
+        var blockstart;
+        var i, j;
+        var W = new Array(80);
+        var H0 = 0x67452301;
+        var H1 = 0xEFCDAB89;
+        var H2 = 0x98BADCFE;
+        var H3 = 0x10325476;
+        var H4 = 0xC3D2E1F0;
+        var A, B, C, D, E;
+        var temp;
+
+        msg = Utf8Encode(msg);
+
+        var msg_len = msg.length;
+
+        var word_array = new Array();
+        for( i=0; i<msg_len-3; i+=4 ) {
+                j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)<<16 |
+                msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3);
+                word_array.push( j );
+        }
+
+        switch( msg_len % 4 ) {
+                case 0:
+                        i = 0x080000000;
+                break;
+                case 1:
+                        i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000;
+                break;
+
+                case 2:
+                        i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000;
+                break;
+
+                case 3:
+                        i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8        | 0x80;
+                break;
+        }
+
+        word_array.push( i );
+
+        while( (word_array.length % 16) != 14 ) word_array.push( 0 );
+
+        word_array.push( msg_len>>>29 );
+        word_array.push( (msg_len<<3)&0x0ffffffff );
+
+
+        for ( blockstart=0; blockstart<word_array.length; blockstart+=16 ) {
+
+                for( i=0; i<16; i++ ) W[i] = word_array[blockstart+i];
+                for( i=16; i<=79; i++ ) W[i] = rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);
+
+                A = H0;
+                B = H1;
+                C = H2;
+                D = H3;
+                E = H4;
+
+                for( i= 0; i<=19; i++ ) {
+                        temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
+                        E = D;
+                        D = C;
+                        C = rotate_left(B,30);
+                        B = A;
+                        A = temp;
+                }
+
+                for( i=20; i<=39; i++ ) {
+                        temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
+                        E = D;
+                        D = C;
+                        C = rotate_left(B,30);
+                        B = A;
+                        A = temp;
+                }
+
+                for( i=40; i<=59; i++ ) {
+                        temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
+                        E = D;
+                        D = C;
+                        C = rotate_left(B,30);
+                        B = A;
+                        A = temp;
+                }
+
+                for( i=60; i<=79; i++ ) {
+                        temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
+                        E = D;
+                        D = C;
+                        C = rotate_left(B,30);
+                        B = A;
+                        A = temp;
+                }
+
+                H0 = (H0 + A) & 0x0ffffffff;
+                H1 = (H1 + B) & 0x0ffffffff;
+                H2 = (H2 + C) & 0x0ffffffff;
+                H3 = (H3 + D) & 0x0ffffffff;
+                H4 = (H4 + E) & 0x0ffffffff;
+
+        }
+
+        var temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
+
+        return temp.toLowerCase();
+}