Saduff Posted April 28, 2012 Share Posted April 28, 2012 (edited) 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, 2012 by Saduff Link to comment Share on other sites More sharing options...
ChOoKi Posted May 1, 2012 Share Posted May 1, 2012 (edited) 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, 2012 by ChOoKi Link to comment Share on other sites More sharing options...
Saduff Posted May 1, 2012 Author Share Posted May 1, 2012 Well done, ChOoKi. Good work, as always! Thanks for the challenge, can I have that prize now? Sure. Writing PM now... Link to comment Share on other sites More sharing options...
DE! Posted May 9, 2012 Share Posted May 9, 2012 Here's my solution with sourcecode in lazarus/freepascal. There's also some info on how the numbers were calculated KeyGenMe #17.rar 2 Link to comment Share on other sites More sharing options...
Saduff Posted May 9, 2012 Author Share Posted May 9, 2012 Nice! Good job DE! What gave away the signature scheme? How did you figure it out? Link to comment Share on other sites More sharing options...
DE! Posted May 9, 2012 Share Posted May 9, 2012 (edited) 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, 2012 by DE! Link to comment Share on other sites More sharing options...
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