Hello everyone,
Recently I've upgraded my node to v0.8.8 and I encountered this strange
error (I'm not sure if it was present in previous node versions, though).
I have two functions for crypting and decrypting data in my application:
var cc_key = fs.readFileSync(path_to_key_file);
crypt = function(val){
var c = crypto.createCipher('aes256', cc_key.toString());
c.update(val, 'utf8');
return c.final('hex')
}
decrypt = function(val){
var c = crypto.createDecipher('aes256', cc_key.toString());
c.update(val, 'hex');
return c.final('utf8');
}
Both work just fine, unless I try to crypt and decrypt strings longer than
15 characters.
For example, doing:
var a = crypt("123456789012345");
console.log(decrypt(a))
works perfectly.
But doing:
var a = crypt("1234567890123456");
--- in here a = "694e42d3af6bd12b6fb6d165ca702e30" - so it's not empty and
seem to be ok ---
console.log(decrypt(a));
Throws: TypeError: DecipherFinal fail.
I'm not sure if I'm doing something wrong or there is a bug in crypto
module in node? I looked over the internet and it seems like a lot of
people have similar problems, but no-one knows the answer why is this
happening.
Paulina.
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