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Code Issues Releases Wiki Activity

created portable version of util

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This commit is contained in:
Tankred Hase 2013-04-05 16:51:47 +02:00
parent e1c8866afe
commit 104bc734f6
1 changed files with 39 additions and 3 deletions
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40
src/js/crypto/util.js
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@ -1,7 +1,9 @@
var crypt = crypt;
/** /**
* Various utitity methods for crypto, encoding & decoding * Various utitity methods for crypto, encoding & decoding
*/ */
app.crypto.Util = function(window, uuid) { var Util = function(window, uuid) {
'use strict'; 'use strict';
/** /**
@ -19,10 +21,15 @@ app.crypto.Util = function(window, uuid) {
this.random = function(keySize) { this.random = function(keySize) {
var keyBase64, keyBuf; var keyBase64, keyBuf;
if (window.crypto && window.crypto.getRandomValues) { if (typeof module !== 'undefined' && module.exports) {
keyBuf = crypt.randomBytes(keySize / 8);
keyBase64 = new Buffer(keyBuf).toString('base64');
} else if (window.crypto && window.crypto.getRandomValues) {
keyBuf = new Uint8Array(keySize / 8); keyBuf = new Uint8Array(keySize / 8);
window.crypto.getRandomValues(keyBuf); window.crypto.getRandomValues(keyBuf);
keyBase64 = window.btoa(this.uint8Arr2BinStr(keyBuf)); keyBase64 = window.btoa(this.uint8Arr2BinStr(keyBuf));
} else { } else {
// add an additional peace of entropy to the pot and stir with the sjcl prng // add an additional peace of entropy to the pot and stir with the sjcl prng
sjcl.random.addEntropy((new Date()).valueOf(), 2, "calltime"); sjcl.random.addEntropy((new Date()).valueOf(), 2, "calltime");
@ -165,4 +172,33 @@ app.crypto.Util = function(window, uuid) {
return str; return str;
}; };
/**
* Convert a str to base64 in a browser and in node.js
*/
this.str2Base64 = function(str) {
if (typeof module !== 'undefined' && module.exports) {
return new Buffer(str, 'binary').toString('base64');
} else {
return window.btoa(str);
}
}; };
/**
* Convert a base64 encoded string in a browser and in node.js
*/
this.base642Str = function(str) {
if (typeof module !== 'undefined' && module.exports) {
return new Buffer(str, 'base64').toString('binary');
} else {
return window.atob(str);
}
};
};
if (typeof module !== 'undefined' && module.exports) {
crypt = require('crypto');
module.exports = Util;
} else {
app.crypto.Util = Util;
}