SDDecoder keygenme by gbe32241 is a truly amazing work, worth anybody's examination.
In this knock-off, the strengthening factors are removed, namely:
- the input and output transforms are separated from the core function
- the key size is reduced from 128 bits to 64 bits
- some other minor simplifications
Here is a list of example codes.
Can you keygen the rest?
UPDATE: (Oct05_2009) a mysterious visitor "z1hye" registered October 5th, 2009 and immediately posted the serial "F365E2149BEA87F1" with ID 0xDEAD!!
UPDATE: (Nov25_2009): Numernia has keygenned it!! check his site or my file archive for sources...going to increase the difficulty towards the real sddecoder now by applying just an input transformation and just an output transformation (but not both simultaneously) ...watch crackmes.de soon