On Tue, Feb 17, 2009 at 8:57 AM, Victor Duchovni <victor.ducho...@morganstanley.com> wrote: > On Tue, Feb 17, 2009 at 10:20:38PM +0800, loody wrote: > >> The round# is set according to the bits we pass to AES_set_encrypt_key. >> And Nk*round# keys are also produced well in it. >> But how about Nb, the number of column in state? >> (in 128, 192 and 256 bits block plaintext, the Nb, column# of state is >> 4,6,8.) >> The parameters we pass to AES_encrypt are in, out, key. >> We don't tell AES_encrypt the total bits of plaintext. >> If we don't pass bis length information to AES_encrypt, how it do the >> SubBytes, ShiftRows, MixColumns and AddRoundKey? > > You are asking the wrong questions. Why are you trying to reverse-engineer > the AES implementation? Why not just use it via the EVP interface?
My guess is that he's trying to understand an actual in-world AES implementation, instead of simply using something that he doesn't understand. Why are you trying to enforce the idea of cryptography as a black box, rather than something that people should learn about? -Kyle H ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
