On Thu July 15 2010, Anthony Gabrielson wrote: > Hello, > This seems to be a pretty typical question that gets posted often. I have a > simple example that I think hits it. Anyway, its the first entry into a blog > that I'm starting to building up. If your interested the code and (a brief) > explanation is available here: > > http://agabrielson.wordpress.com/2010/07/15/openssl-an-example-from-the-command-line/#more-4 > >
Interesting blog. One quick question on the first linked-to source at the top: quote memset(plaintext,0,sizeof(plaintext)); in_len = strlen(ciphertext); end-quote How did you get strlen to ignore any embedded zeros in the ciphertext? Mike > One note - I didn't use the ex function; I used the older version. It should > give you a slightly easier place to start from. > > Anthony > > ----- Original Message ----- > From: "Rudy1" <r...@compumatica.eu> > To: openssl-users@openssl.org > Sent: Thursday, July 15, 2010 5:37:38 AM > Subject: AES128 CBC > > I'm using the openssl crypto lib first time and I don't know how to encrypt > text larger than blocksize (16 byte) . For example I want to encrypt a string > of size 292 bytes. I call EVP_EncryptUpdate () one time and 288 bytes will be > encrypted and finally I call EVP_EncryptFinal_ex(). Do I really encrypt the > whole string correctly? Or do I have to call EVP_EncryptUpdate () for every > blocksize chunk of my string? How large is the encrypted string? I would > expect 304 bytes (288 + 16). Is this correct? Rudy1 > > View this message in context: AES128 CBC > Sent from the OpenSSL - User mailing list archive at Nabble.com. > ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org