>>But when I comment out the key length line, and truncate the key >>so it's only 16 bytes instead of 32, it returns the same ciphertext. >> >>Is it not possible with EVP to change the key size?? >>I've checked the return code of EVP_CIPHER_CTX_set_key_length, and >>everything looks like it should be working ... >> >>I'm using OpenSSL 0.9.6b >> > > > You need two calls to EVP_EncryptInit if you are changing cipher > parameters, check the manual pages for more info.
Hmm, I just experienced an oddity. When I went from 0 to 15 twice as my key (256 bit key), it produced the same output as if I had gone only gone from 0 to 15 once (128bit key) .. So I guess having this repeating pattern or whatever actually reduced my cipher strength to 128 bits .... I had no idea, and I guess this is where I _thought_ I was seeing a problem, but really wasn't .... oops ... sorry... -Brad ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
