On Fri, 10 Oct 2014 03:47:18 -0500
Ambarus Tudor-Dan-B38632 <tudor.amba...@freescale.com> wrote:
> On Thu, 9 Oct 2014 17:54:09 +0300
> Tudor Ambarus <tudor.amba...@freescale.com> wrote:
> > + /* Galois Counter Mode */
> > + {
> > + .name = "gcm(aes)",
> > + .driver_name = "gcm-aes-caam",
> > + .blocksize = 1,
> > + .type = CRYPTO_ALG_TYPE_AEAD,
> > + .template_aead = {
> > + .setkey = gcm_setkey,
> > + .setauthsize = gcm_setauthsize,
> > + .encrypt = aead_encrypt,
> > + .decrypt = aead_decrypt,
> > + .givencrypt = NULL,
> > + .geniv = "<built-in>",
> > + .ivsize = 12,
> > + .maxauthsize = 16,
>
> AES_BLOCK_SIZE
> [TA] I think we shall not change the blocksize value to AES_BLOCK_SIZE.
> GCM uses a block cipher as a stream cipher. It generates encryption blocks,
> which are then XORed with the plaintext blocks to get the ciphertext. Just as
> with other stream ciphers, flipping a bit in the ciphertext produces a
> flipped bit in the plaintext at the same location.
>
Sorry, I meant just .maxauthsize = AES_BLOCK_SIZE.
Kim
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