CO2_CORE_DLL (C# Library)

[CptSky]

Originally Posted by -impulse-

After some testing I found the issue.
Beside the 72 key size (TQ's hack), the issue is related to the reuse of the class.

private unsafe static void TestCrypto()
{
    Blowfish bf = new Blowfish();
    byte[] key = Encoding.ASCII.GetBytes("Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!Hello world!");
    bf.GenerateKey(key);
    byte[] data = Encoding.ASCII.GetBytes("The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.");
    fixed (byte* ptr = data)
        bf.Encrypt(ptr, data.Length);
    bf = new Blowfish(); //null this line and it will not decrypt correctly
    bf.GenerateKey(key);
    fixed (byte* ptr = data)
        bf.Decrypt(ptr, data.Length);
    Console.WriteLine(Encoding.ASCII.GetString(data));
}

If you use GenerateKey twice, the second time it will not work correctly.

You must reset the IVs I think, and check if in the generateKey method, the counters are resetted.

[ShyroFR]

Hi ! Thanks for the Release!

i've you done the reverse of String2Id function for the WDF format ? (Id2String)

[CptSky]

Originally Posted by ShyroFR

Hi ! Thanks for the Release!

i've you done the reverse of String2Id function for the WDF format ? (Id2String)

It's impossible. It's a hash algorithm, so it's one way only.