28 28
/**
29 29
* ASN1 object identifiers for hashes (See {@link http://tools.ietf.org/html/rfc4880#section-5.2.2})
30 30
*/
31 -
hash_headers = [];
31 +
var hash_headers = [];
32 32
hash_headers[1] = [0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05, 0x05, 0x00, 0x04,
33 33
0x10
34 34
];
@@ -53,6 +53,25 @@ var crypto = require('./crypto.js'),
53 53
BigInteger = require('./public_key/jsbn.js'),
54 54
hash = require('./hash');
55 55 56 +
/**
57 +
* Create padding with secure random data
58 +
* @private
59 +
* @param {Integer} length Length of the padding in bytes
60 +
* @return {String} Padding as string
61 +
*/
62 +
function getPkcs1Padding(length) {
63 +
var result = '';
64 +
var randomByte;
65 +
while (result.length < length) {
66 +
randomByte = random.getSecureRandomOctet();
67 +
if (randomByte !== 0) {
68 +
result += String.fromCharCode(randomByte);
69 +
}
70 +
}
71 +
return result;
72 +
}
73 + 74 + 56 75
module.exports = {
57 76
eme: {
58 77
/**
@@ -67,9 +86,7 @@ module.exports = {
67 86
var result = "";
68 87
result += String.fromCharCode(0);
69 88
result += String.fromCharCode(2);
70 -
for (var i = 0; i < length - message.length - 3; i++) {
71 -
result += String.fromCharCode(random.getPseudoRandom(1, 255));
72 -
}
89 +
result += getPkcs1Padding(length - message.length - 3);
73 90
result += String.fromCharCode(0);
74 91
result += message;
75 92
return result;
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