Am Donnerstag, 23. April 2015, 09:46:09 schrieb Herbert Xu: Hi Herbert, > On Thu, Apr 23, 2015 at 03:39:11AM +0200, Stephan Mueller wrote: > > The KW does not return an IV. The IV is used for encryption to stir the > > encryption a bit. The resulting ciphertext now contains the mixed in IV. > > For decryption, the IV is only used to verify that the one block in the > > decryption operation matches the IV. > > > > So, there is no IV returned by the encryption. > > Of course there is. The first 8 bytes of the ciphertext is the > output IV. > > If you really want to pedantic then make a function wrapper around > the whole thing and copy the IV in there. Ok, I am trying to get it moved to blkcipher. I am still unsure how to handle the IV. The reason for that is the following: Encrypt input: IV, plaintext Encrypt output: processed IV, ciphertext Decrypt input: processed IV, ciphertext, IV to use for compare operation Decrypt output: plaintext How do you propose I send 2 IVs to blkcipher? -- Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
