[dpdk-dev,v2,2/3] crypto/aesni_gcm: fix iv size in PMD capabilities
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Commit Message
This patch sets iv size in aesni gcm PMD to 12 bytes to be
conformant with nist SP800-38D.
Fixes: eec136f3c54f ("aesni_gcm: add driver for AES-GCM crypto operations")
Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Comments
> Subject: [dpdk-dev] [PATCH v2 2/3] crypto/aesni_gcm: fix iv size in PMD
> capabilities
>
> This patch sets iv size in aesni gcm PMD to 12 bytes to be conformant with
> nist SP800-38D.
>
> Fixes: eec136f3c54f ("aesni_gcm: add driver for AES-GCM crypto
> operations")
>
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
> drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> index e824d4b..c51f82a 100644
> --- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> +++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> @@ -77,8 +77,8 @@ static const struct rte_cryptodev_capabilities
> aesni_gcm_pmd_capabilities[] = {
> .increment = 0
> },
> .iv_size = {
> - .min = 16,
> - .max = 16,
> + .min = 12,
> + .max = 12,
> .increment = 0
> }
> }, }
I think that we should also remove 16 na 0 bytes allowed in process_gcm_crypto_op() function:
if (op->cipher.iv.length != 16 && op->cipher.iv.length != 12 &&
op->cipher.iv.length != 0) {
GCM_LOG_ERR("iv");
return -1;
}
Regards,
Piotr
> Subject: Re: [dpdk-dev] [PATCH v2 2/3] crypto/aesni_gcm: fix iv size in PMD
> capabilities
>
> > Subject: [dpdk-dev] [PATCH v2 2/3] crypto/aesni_gcm: fix iv size in
> > PMD capabilities
> >
> > This patch sets iv size in aesni gcm PMD to 12 bytes to be conformant
> > with nist SP800-38D.
> >
> > Fixes: eec136f3c54f ("aesni_gcm: add driver for AES-GCM crypto
> > operations")
> >
> > Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> > ---
> > drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> > b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> > index e824d4b..c51f82a 100644
> > --- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> > +++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> > @@ -77,8 +77,8 @@ static const struct rte_cryptodev_capabilities
> > aesni_gcm_pmd_capabilities[] = {
> > .increment = 0
> > },
> > .iv_size = {
> > - .min = 16,
> > - .max = 16,
> > + .min = 12,
> > + .max = 12,
> > .increment = 0
> > }
> > }, }
>
> I think that we should also remove 16 na 0 bytes allowed in
> process_gcm_crypto_op() function:
> if (op->cipher.iv.length != 16 && op->cipher.iv.length != 12 &&
> op->cipher.iv.length != 0) {
> GCM_LOG_ERR("iv");
> return -1;
> }
I found this notice about IV in rte_crypto_sym.h :
* - For GCM mode, this is either the IV (if the length
* is 96 bits) or J0 (for other sizes), where J0 is as
* defined by NIST SP800-38D. Regardless of the IV
* length, a full 16 bytes needs to be allocated.
So it is fine to leave unchanged above code.
Acked-by: Piotr Azarewicz <piotrx.t.azarewicz@intel.com>
CC'ing stable mailing list.
> -----Original Message-----
> From: Kusztal, ArkadiuszX
> Sent: Friday, December 23, 2016 8:25 AM
> To: dev@dpdk.org
> Cc: Trahe, Fiona; De Lara Guarch, Pablo; Griffin, John; Jain, Deepak K;
> Doherty, Declan; Kusztal, ArkadiuszX
> Subject: [PATCH v2 2/3] crypto/aesni_gcm: fix iv size in PMD capabilities
>
> This patch sets iv size in aesni gcm PMD to 12 bytes to be
> conformant with nist SP800-38D.
>
> Fixes: eec136f3c54f ("aesni_gcm: add driver for AES-GCM crypto
> operations")
>
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
> drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> index e824d4b..c51f82a 100644
> --- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> +++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
> @@ -77,8 +77,8 @@ static const struct rte_cryptodev_capabilities
> aesni_gcm_pmd_capabilities[] = {
> .increment = 0
> },
> .iv_size = {
> - .min = 16,
> - .max = 16,
> + .min = 12,
> + .max = 12,
> .increment = 0
> }
> }, }
> --
> 2.1.0
@@ -77,8 +77,8 @@ static const struct rte_cryptodev_capabilities aesni_gcm_pmd_capabilities[] = {
.increment = 0
},
.iv_size = {
- .min = 16,
- .max = 16,
+ .min = 12,
+ .max = 12,
.increment = 0
}
}, }