dhx.crypt.js

/*jslint browser: true, devel: true, eqeq: true, newcap: true, nomen: true, white: true */
/*global $dhx, dhtmlx */
// please check https://github.com/bitwiseshiftleft/sjcl
(function(namespace) {
    'use strict';
})(window.$dhx = window.$dhx || {});

(function(namespace) {
    'use strict';
})($dhx.crypt = $dhx.crypt || {
    /**
     *
     *  Secure Hash Algorithm (SHA1)
     *  http://www.webtoolkit.info/
     *
     **/
    SHA1: function(msg) {
        var rotate_left = function(n, s) {
                var t4 = (n << s) | (n >>> (32 - s));
                return t4;
            },
            lsb_hex = function(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;
            },
            cvt_hex = function(val) {
                var str = "";
                var i;
                var v;
                for (i = 7; i >= 0; i--) {
                    v = (val >>> (i * 4)) & 0x0f;
                    str += v.toString(16);
                }
                return str;
            },
            Utf8Encode = function(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;
            },
            blockstart,
            i,
            j,
            W = new Array(80),
            H0 = 0x67452301,
            H1 = 0xEFCDAB89,
            H2 = 0x98BADCFE,
            H3 = 0x10325476,
            H4 = 0xC3D2E1F0,
            A, B, C, D, E,
            temp;
        msg = Utf8Encode(msg);
        var msg_len = msg.length;
        var word_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;
        }
        temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
        return temp.toLowerCase();
    },
    /**
     *
     *  Secure Hash Algorithm (SHA256)
     *  http://www.webtoolkit.info/
     *
     *  Original code by Angel Marin, Paul Johnston.
     *
     **/
    SHA2: function(s) {
        var chrsz = 8;
        var hexcase = 0;

        function safe_add(x, y) {
            var lsw = (x & 0xFFFF) + (y & 0xFFFF);
            var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
            return (msw << 16) | (lsw & 0xFFFF);
        }

        function S(X, n) {
            return (X >>> n) | (X << (32 - n));
        }

        function R(X, n) {
            return (X >>> n);
        }

        function Ch(x, y, z) {
            return ((x & y) ^ ((~x) & z));
        }

        function Maj(x, y, z) {
            return ((x & y) ^ (x & z) ^ (y & z));
        }

        function Sigma0256(x) {
            return (S(x, 2) ^ S(x, 13) ^ S(x, 22));
        }

        function Sigma1256(x) {
            return (S(x, 6) ^ S(x, 11) ^ S(x, 25));
        }

        function Gamma0256(x) {
            return (S(x, 7) ^ S(x, 18) ^ R(x, 3));
        }

        function Gamma1256(x) {
            return (S(x, 17) ^ S(x, 19) ^ R(x, 10));
        }

        function core_sha256(m, l) {
            var K = new Array(0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, 0xE49B69C1, 0xEFBE4786, 0xFC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147, 0x6CA6351, 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);
            var HASH = new Array(0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19);
            var W = new Array(64);
            var a, b, c, d, e, f, g, h/*, i, j*/;
            var T1, T2;
            m[l >> 5] |= 0x80 << (24 - l % 32);
            m[((l + 64 >> 9) << 4) + 15] = l;
            for (var 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 (var j = 0; j < 64; j++) {
                    if (j < 16) W[j] = m[j + i];
                    else W[j] = safe_add(safe_add(safe_add(Gamma1256(W[j - 2]), W[j - 7]), Gamma0256(W[j - 15])), W[j - 16]);
                    T1 = safe_add(safe_add(safe_add(safe_add(h, Sigma1256(e)), Ch(e, f, g)), K[j]), W[j]);
                    T2 = safe_add(Sigma0256(a), 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 str2binb(str) {
            var bin = Array();
            var mask = (1 << chrsz) - 1;
            for (var i = 0; i < str.length * chrsz; i += chrsz) {
                bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (24 - i % 32);
            }
            return bin;
        }

        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;
        }

        function binb2hex(binarray) {
            var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
            var str = "";
            for (var i = 0; i < binarray.length * 4; 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;
        }
        s = Utf8Encode(s);
        return binb2hex(core_sha256(str2binb(s), s.length * chrsz));
    },
    base64_encode: function(s) {
        return base64.encode(s);
    },
    base64_decode: function(s) {
        return base64.decode(s);
    },
    Base64: {
        _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
        //ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=
        encode: function(input) {
            var output = "";
            var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
            var i = 0;
            input = Base64._utf8_encode(input);
            while (i < input.length) {
                chr1 = input.charCodeAt(i++);
                chr2 = input.charCodeAt(i++);
                chr3 = input.charCodeAt(i++);
                enc1 = chr1 >> 2;
                enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
                enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
                enc4 = chr3 & 63;
                if (isNaN(chr2)) {
                    enc3 = enc4 = 64;
                } else if (isNaN(chr3)) {
                    enc4 = 64;
                }
                output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
            }
            return output;
        },
        decode: function(input) {
            var output = "";
            var chr1, chr2, chr3;
            var enc1, enc2, enc3, enc4;
            var i = 0;
            input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
            while (i < input.length) {
                enc1 = this._keyStr.indexOf(input.charAt(i++));
                enc2 = this._keyStr.indexOf(input.charAt(i++));
                enc3 = this._keyStr.indexOf(input.charAt(i++));
                enc4 = this._keyStr.indexOf(input.charAt(i++));
                chr1 = (enc1 << 2) | (enc2 >> 4);
                chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
                chr3 = ((enc3 & 3) << 6) | enc4;
                output = output + String.fromCharCode(chr1);
                if (enc3 != 64) {
                    output = output + String.fromCharCode(chr2);
                }
                if (enc4 != 64) {
                    output = output + String.fromCharCode(chr3);
                }
            }
            output = Base64._utf8_decode(output);
            return output;
        },
        _utf8_encode: function(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;
        },
        _utf8_decode: function(utftext) {
            var string = "",
                i = 0,
                c = 0,
                c1 = 0,
                c2 = 0;
            while (i < utftext.length) {
                c = utftext.charCodeAt(i);
                if (c < 128) {
                    string += String.fromCharCode(c);
                    i++;
                } else if ((c > 191) && (c < 224)) {
                    c2 = utftext.charCodeAt(i + 1);
                    string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                    i += 2;
                } else {
                    c2 = utftext.charCodeAt(i + 1);
                    c3 = utftext.charCodeAt(i + 2);
                    string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                    i += 3;
                }
            }
            return string;
        }
    },
    setRSA64: function(originalStr) {
        return $dhx.crypt.Base64.encode(originalStr);
    },
    getRSA64: function(criptStr) {
        return $dhx.crypt.Base64.decode(criptStr);
    }
});

window.base64 = {};
base64.PADCHAR = '=';
base64.ALPHA = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
base64.makeDOMException = function() {
    // sadly in FF,Safari,Chrome you can't make a DOMException
    //var e, tmp;
    try {
        return new DOMException(DOMException.INVALID_CHARACTER_ERR);
    } catch (tmp) {
        // not available, just passback a duck-typed equiv
        // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Error
        // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Error/prototype
        var ex = new Error("DOM Exception 5");
        // ex.number and ex.description is IE-specific.
        ex.code = ex.number = 5;
        ex.name = ex.description = "INVALID_CHARACTER_ERR";
        // Safari/Chrome output format
        ex.toString = function() {
            return 'Error: ' + ex.name + ': ' + ex.message;
        };
        return ex;
    }
};
base64.getbyte64 = function(s, i) {
    // This is oddly fast, except on Chrome/V8.
    //  Minimal or no improvement in performance by using a
    //   object with properties mapping chars to value (eg. 'A': 0)
    var idx = base64.ALPHA.indexOf(s.charAt(i));
    if (idx === -1) {
        throw base64.makeDOMException();
    }
    return idx;
};
base64.decode = function(s) {
    // convert to string
    s = '' + s;
    var getbyte64 = base64.getbyte64;
    var pads, i, b10;
    var imax = s.length;
    if (imax === 0) {
        return s;
    }
    if (imax % 4 !== 0) {
        throw base64.makeDOMException();
    }
    pads = 0;
    if (s.charAt(imax - 1) === base64.PADCHAR) {
        pads = 1;
        if (s.charAt(imax - 2) === base64.PADCHAR) {
            pads = 2;
        }
        // either way, we want to ignore this last block
        imax -= 4;
    }
    var x = [];
    for (i = 0; i < imax; i += 4) {
        b10 = (getbyte64(s, i) << 18) | (getbyte64(s, i + 1) << 12) | (getbyte64(s, i + 2) << 6) | getbyte64(s, i + 3);
        x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 0xff, b10 & 0xff));
    }
    switch (pads) {
        case 1:
            b10 = (getbyte64(s, i) << 18) | (getbyte64(s, i + 1) << 12) | (getbyte64(s, i + 2) << 6);
            x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 0xff));
            break;
        case 2:
            b10 = (getbyte64(s, i) << 18) | (getbyte64(s, i + 1) << 12);
            x.push(String.fromCharCode(b10 >> 16));
            break;
    }
    return x.join('');
};
base64.getbyte = function(s, i) {
    var x = s.charCodeAt(i);
    if (x > 255) {
        throw base64.makeDOMException();
    }
    return x;
};
base64.encode = function(s) {
    if (arguments.length !== 1) {
        throw new SyntaxError("Not enough arguments");
    }
    var padchar = base64.PADCHAR;
    var alpha = base64.ALPHA;
    var getbyte = base64.getbyte;
    var i, b10;
    var x = [];
    // convert to string
    s = '' + s;
    var imax = s.length - s.length % 3;
    if (s.length === 0) {
        return s;
    }
    for (i = 0; i < imax; i += 3) {
        b10 = (getbyte(s, i) << 16) | (getbyte(s, i + 1) << 8) | getbyte(s, i + 2);
        x.push(alpha.charAt(b10 >> 18));
        x.push(alpha.charAt((b10 >> 12) & 0x3F));
        x.push(alpha.charAt((b10 >> 6) & 0x3f));
        x.push(alpha.charAt(b10 & 0x3f));
    }
    switch (s.length - imax) {
        case 1:
            b10 = getbyte(s, i) << 16;
            x.push(alpha.charAt(b10 >> 18) + alpha.charAt((b10 >> 12) & 0x3F) + padchar + padchar);
            break;
        case 2:
            b10 = (getbyte(s, i) << 16) | (getbyte(s, i + 1) << 8);
            x.push(alpha.charAt(b10 >> 18) + alpha.charAt((b10 >> 12) & 0x3F) + alpha.charAt((b10 >> 6) & 0x3f) + padchar);
            break;
    }
    return x.join('');
};
if (!window.btoa) window.btoa = base64.encode;
if (!window.atob) window.atob = base64.decode;