You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
3.5 KiB
117 lines
3.5 KiB
var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
let Crypto = {};
|
|
var util = Crypto.util = {
|
|
rotl: function(n, b) {
|
|
return (n << b) | (n >>> (32 - b));
|
|
},
|
|
rotr: function(n, b) {
|
|
return (n << (32 - b)) | (n >>> b);
|
|
},
|
|
endian: function(n) {
|
|
if (n.constructor == Number) {
|
|
return util.rotl(n, 8) & 0x00FF00FF |
|
|
util.rotl(n, 24) & 0xFF00FF00;
|
|
}
|
|
for (var i = 0; i < n.length; i++)
|
|
n[i] = util.endian(n[i]);
|
|
return n;
|
|
},
|
|
randomBytes: function(n) {
|
|
for (var bytes = []; n > 0; n--)
|
|
bytes.push(Math.floor(Math.random() * 256));
|
|
return bytes;
|
|
},
|
|
stringToBytes: function(str) {
|
|
var bytes = [];
|
|
for (var i = 0; i < str.length; i++)
|
|
bytes.push(str.charCodeAt(i));
|
|
return bytes;
|
|
},
|
|
bytesToString: function(bytes) {
|
|
var str = [];
|
|
for (var i = 0; i < bytes.length; i++)
|
|
str.push(String.fromCharCode(bytes[i]));
|
|
return str.join("");
|
|
},
|
|
stringToWords: function(str) {
|
|
var words = [];
|
|
for (var c = 0, b = 0; c < str.length; c++, b += 8)
|
|
words[b >>> 5] |= str.charCodeAt(c) << (24 - b % 32);
|
|
return words;
|
|
},
|
|
bytesToWords: function(bytes) {
|
|
var words = [];
|
|
for (var i = 0, b = 0; i < bytes.length; i++, b += 8)
|
|
words[b >>> 5] |= bytes[i] << (24 - b % 32);
|
|
return words;
|
|
},
|
|
wordsToBytes: function(words) {
|
|
var bytes = [];
|
|
for (var b = 0; b < words.length * 32; b += 8)
|
|
bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
|
|
return bytes;
|
|
},
|
|
bytesToHex: function(bytes) {
|
|
var hex = [];
|
|
for (var i = 0; i < bytes.length; i++) {
|
|
hex.push((bytes[i] >>> 4).toString(16));
|
|
hex.push((bytes[i] & 0xF).toString(16));
|
|
}
|
|
return hex.join("");
|
|
},
|
|
hexToBytes: function(hex) {
|
|
var bytes = [];
|
|
for (var c = 0; c < hex.length; c += 2)
|
|
bytes.push(parseInt(hex.substr(c, 2), 16));
|
|
return bytes;
|
|
},
|
|
bytesToBase64: function(bytes) {
|
|
if (typeof btoa == "function") return btoa(util.bytesToString(bytes));
|
|
var base64 = [],
|
|
overflow;
|
|
for (var i = 0; i < bytes.length; i++) {
|
|
switch (i % 3) {
|
|
case 0:
|
|
base64.push(base64map.charAt(bytes[i] >>> 2));
|
|
overflow = (bytes[i] & 0x3) << 4;
|
|
break;
|
|
case 1:
|
|
base64.push(base64map.charAt(overflow | (bytes[i] >>> 4)));
|
|
overflow = (bytes[i] & 0xF) << 2;
|
|
break;
|
|
case 2:
|
|
base64.push(base64map.charAt(overflow | (bytes[i] >>> 6)));
|
|
base64.push(base64map.charAt(bytes[i] & 0x3F));
|
|
overflow = -1;
|
|
}
|
|
}
|
|
if (overflow != undefined && overflow != -1)
|
|
base64.push(base64map.charAt(overflow));
|
|
while (base64.length % 4 != 0) base64.push("=");
|
|
return base64.join("");
|
|
},
|
|
base64ToBytes: function(base64) {
|
|
if (typeof atob == "function") return util.stringToBytes(atob(base64));
|
|
base64 = base64.replace(/[^A-Z0-9+\/]/ig, "");
|
|
var bytes = [];
|
|
for (var i = 0; i < base64.length; i++) {
|
|
switch (i % 4) {
|
|
case 1:
|
|
bytes.push((base64map.indexOf(base64.charAt(i - 1)) << 2) |
|
|
(base64map.indexOf(base64.charAt(i)) >>> 4));
|
|
break;
|
|
case 2:
|
|
bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0xF) << 4) |
|
|
(base64map.indexOf(base64.charAt(i)) >>> 2));
|
|
break;
|
|
case 3:
|
|
bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0x3) << 6) |
|
|
(base64map.indexOf(base64.charAt(i))));
|
|
break;
|
|
}
|
|
}
|
|
return bytes;
|
|
}
|
|
};
|
|
Crypto.mode = {};
|
|
export default Crypto;
|