Quoting Nils Larsch <[EMAIL PROTECTED]>:

Julien ALLANOS wrote:
Hello, I want to use AES encryption in my C application, but I am missing
documentation. I only have openssl/aes.h but there isn't any manpage. Can
someone points me to any how-to or source code? Thanks for you help.

consider using the EVP_Cipher* etc. functions (see EVP_CipherInit_ex


Thanks Nils. This manpage shows a great example of an encryption/decryption
function using this high-level API. However, I have a last question: is there
any limit on the input buffer size for EVP_CipherUpdate()? I see in the example that you're using 1024 bytes buffers inside a for loop. In my application, most of the buffers I'm encrypting using AES-192 are <1024 bytes, but there might be
cases where a buffer has a greater size (not so much though). I'm wondering if
calling EVP_CipherUpdate() only once would be generic enough to handle these
situations, or if I should use a for loop as you did. Thanks for any help.
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