On Thu, May 20, 2010 at 11:11:34PM +0800, yu xue wrote: > Hello, everyone: > I am a student who is lucky to be choosed as one of this year's gsoc > students. My name is Yu Xue. Next week the gsoc will start. My gsoc project > is "100 year cryptography". This project's main purpose is to implement some > combiners of cryptographic algorithms. The first part is combiner of > ciphers. In this phase, I will write the documents and API, write test > harness including unit tests, tests vectors etc, and implement the combiner > of block cipher based on the test cases which is mainly comber of AES using > CTR mode and XSalsa20. The second part is combiner of hash function---Comb4P > which has three round feistel and the round function is composed of xoring > of H0 and H1 with the help of round index i. The above two parts is the main
Yay! Some things that need to be resolved: - Which hash functions will we combine? SHA-256 seems like an obvious candidate for one half, since it is relatively standard and thought to be secure at the moment, and is relatively efficient on 32-bit machines. But what of the other half? One of the SHA-3 candidates seems plausible, but which one? Ideally, we would choose precisely the function that will be eventually become SHA-3, but with 14 round 2 candidates the odds of this are not terribly high. We could also instead combine SHA-256 with another hash already in Crypto++, for instance RIPEMD-160, Whirlpool, or SHA-512. - Will Comb4P be implemented in Python? In C++? Should we try to get Wei Dai to adopt Comb4P into the next version of Crypto++? -Jack _______________________________________________ tahoe-dev mailing list tahoe-dev@allmydata.org http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
