Does anyone knows how the counter is handled in AES_CTR_Encrypt_Init() / AES_CTR_Encrypt_Append().
I suppose it is somewhere in the IV, but the documentation does not talk about it.
The examples use an IV initialised at 0xF0, 0xF1, ..., 0xFF with a nice comment :
"Third parameter is NULL because CTR doesn't use any IV".
If the counter is not in the IV where is it ? How can I modify it ?
Is it a 16 bytes big integer ?
A 32 bit integer ?