This KGM is a result of quite a lot of research, so I hope you'll like it.

You'll need to be good with cryptography to solve this.

The difficulty depends on the person solving it.

• Compiler: Delphi 7
  
• Difficulty: 5 / 10
  
• Accepted solutions: serial, keygen
  

If you solve this properly by making a keygen, I will send you a prize by PM.

KeygenMe17.zip

Edited April 28, 201213 yr by Saduff

A combination from a keygen:

Name: With Love!

Serial : 356E694C99707D51DD1BB7604DB46DA1-435801E98A1A1288B89322117FCE5EAE-2AE514630DFD2E45DEC20ADED10B74BF-6AA7629E8FC6A215B6F154EAB655A903

Thanks for the challenge, can I have that prize now?

Edited May 1, 201213 yr by ChOoKi

Well done, ChOoKi. Good work, as always!

Thanks for the challenge, can I have that prize now?

Sure. Writing PM now...

Here's my solution with sourcecode in lazarus/freepascal.

There's also some info on how the numbers were calculated

KeyGenMe #17.rar

Nice! Good job DE!

What gave away the signature scheme? How did you figure it out?

Nice! Good job DE!

What gave away the signature scheme? How did you figure it out?

Been reading about digital signatures and homomorphic functions for some time already...its a leftover of a project i once did... and i knew about Paillier ... but i remember the "exp mod n²" which also came back in your code when doing the verify

Edited May 9, 201213 yr by DE!