Thank's Jeff again, so I correct myself at this point, the simplest one
block encryption will looks similar to this:
uint8_t key[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t plain[16] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F};
uint8_t cipher[16];
AESEncryption example_encrytpion;
example_encrytpion.SetKey(key, 16);
example_encrytpion.ProcessBlock(plain, cipher);
string cipher_string;
StringSource ss2 (cipher, 16, true, new HexEncoder( new
StringSink(cipher_string)));
cout << cipher_string << endl;
Daniel
On Friday, 4 August 2017 11:49:37 UTC+2, Jeffrey Walton wrote:
>
> On Fri, Aug 4, 2017 at 4:58 AM, Daniel Karcz <daniel...@gmail.com
> <javascript:>> wrote:
> > ...
> > I'm wondering if I can get to AES cipher functions without using any
> mode?
>
> Call ProcessBlock(...) directly. Poly1305 does it to transform the
> per-message nonce into an authenticator key. Its about as lightweight
> as you can get.
>
> When you call BlockCipher::ProcessBlock directly, its up to you to
> ensure you are working with a full block size.
>
> Also see https://github.com/weidai11/cryptopp/blob/master/poly1305.cpp#L36
> and https://www.cryptopp.com/docs/ref/class_block_cipher.html
>
> Jeff
>
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