On Fri, Jan 8, 2021 at 10:44 AM Xamix <gmax...@gmail.com> wrote:
>
> I'm using the library with the templated AES CTR decryptor:
>
> CryptoPP::CTR_Mode<CryptoPP::AES>::Decryption decryptor_ctr_;
>
> I decrypt input data which is previouslly encoded data blocks by using the 
> following function:
>
> decryptor_ecb_.ProcessData(output, input, input_len);
>
> Now I want to get get the IV value after encoding, in order to save it.
> I haven't found any function to retrieve the current IV value which is 
> normally incremented by 1 after each block encoding.
> I can compute it myself but the decryptor should have the value currently 
> after encoding.
>
> Is there a solution to get back the current IV value after encoding?

No, there is no function to retrieve the IV.

There is a function to retrieve the next IV, which only generates a
random block with size of IVsize().

Jeff

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