I agree with you in general.  I assumed the OP was just experimenting.

I use the raw AES_encrypt() because the standard I'm complying to uses a non-standard counter mode. I had to construct it from scratch.

On 3/28/2012 10:56 AM, Marek.Marcola- wrote:

If you want to use low-level AES functions to encrypt more then 16
bytes you should use AES in CBC mode. You can implement this mode
using AES_encrypt ()
or better use AES_cbc_encrypt().
Using  AES_encrypt() block-by-block is called ECB mode.
Look at: http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation



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