[dpdk-dev] [PATCH] crypto/openssl: fix inproper freeing of asymmetric crypto keys in rsa

[dpdk-dev] [PATCH] crypto/openssl: fix inproper freeing of asymmetric crypto keys in rsa

[Arek Kusztal]

In case big number need to be freed, data it contains should be cleared
before especially if it is critical data like private keys.

Fixes: 3e9d6bd447fb ("crypto/openssl: add RSA and mod asym operations")

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 config/common_base                           |  4 ++--
 drivers/crypto/openssl/rte_openssl_pmd_ops.c | 16 ++++++++--------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/config/common_base b/config/common_base
index 6b96e0e..a3d8e17 100644
--- a/config/common_base
+++ b/config/common_base
@@ -573,7 +573,7 @@ CONFIG_RTE_LIBRTE_PMD_OCTEONTX_CRYPTO=y
 #
 CONFIG_RTE_LIBRTE_PMD_QAT=y
 CONFIG_RTE_LIBRTE_PMD_QAT_SYM=n
-CONFIG_RTE_LIBRTE_PMD_QAT_ASYM=n
+CONFIG_RTE_LIBRTE_PMD_QAT_ASYM=y
 #
 # Max. number of QuickAssist devices, which can be detected and attached
 #
@@ -597,7 +597,7 @@ CONFIG_RTE_LIBRTE_PMD_AESNI_MB=n
 #
 # Compile PMD for Software backed device
 #
-CONFIG_RTE_LIBRTE_PMD_OPENSSL=n
+CONFIG_RTE_LIBRTE_PMD_OPENSSL=y
 
 #
 # Compile PMD for AESNI GCM device
diff --git a/drivers/crypto/openssl/rte_openssl_pmd_ops.c b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
index 40217cf..a307c91 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd_ops.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
@@ -912,14 +912,14 @@ static int openssl_set_asym_session_parameters(
 		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_RSA;
 		break;
 err_rsa:
-		BN_free(n);
-		BN_free(e);
-		BN_free(d);
-		BN_free(p);
-		BN_free(q);
-		BN_free(dmp1);
-		BN_free(dmq1);
-		BN_free(iqmp);
+		BN_clear_free(n);
+		BN_clear_free(e);
+		BN_clear_free(d);
+		BN_clear_free(p);
+		BN_clear_free(q);
+		BN_clear_free(dmp1);
+		BN_clear_free(dmq1);
+		BN_clear_free(iqmp);
 
 		return -1;
 	}
-- 
2.1.0

[dpdk-dev] [PATCH] crypto/openssl: fix usage of non constant time memcmp for mac and signature

[Arek Kusztal]

ANSI C memcmp is not constant time function per spec so it should
be avoided in cryptography usage.

Fixes: d61f70b4c918 ("crypto/libcrypto: add driver for OpenSSL library")

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 drivers/crypto/openssl/rte_openssl_pmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c b/drivers/crypto/openssl/rte_openssl_pmd.c
index 6504959..73ce383 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd.c
@@ -1529,7 +1529,7 @@ process_openssl_auth_op(struct openssl_qp *qp, struct rte_crypto_op *op,
 	}
 
 	if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
-		if (memcmp(dst, op->sym->auth.digest.data,
+		if (CRYPTO_memcmp(dst, op->sym->auth.digest.data,
 				sess->auth.digest_length) != 0) {
 			op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 		}
@@ -1914,7 +1914,7 @@ process_openssl_rsa_op(struct rte_crypto_op *cop,
 				"Length of public_decrypt %d "
 				"length of message %zd\n",
 				ret, op->rsa.message.length);
-		if ((ret <= 0) || (memcmp(tmp, op->rsa.message.data,
+		if ((ret <= 0) || (CRYPTO_memcmp(tmp, op->rsa.message.data,
 				op->rsa.message.length))) {
 			OPENSSL_LOG(ERR, "RSA sign Verification failed");
 			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
-- 
2.1.0

Re: [dpdk-dev] [PATCH] crypto/openssl: fix usage of non constant time memcmp for mac and signature

[Trahe, Fiona]

> -----Original Message-----
> From: Kusztal, ArkadiuszX
> Sent: Friday, May 31, 2019 7:59 AM
> To: dev@dpdk.org
> Cc: akhil.goyal@nxp.com; Trahe, Fiona <fiona.trahe@intel.com>; Doherty, Declan
> <declan.doherty@intel.com>; Kusztal, ArkadiuszX <arkadiuszx.kusztal@intel.com>
> Subject: [PATCH] crypto/openssl: fix usage of non constant time memcmp for mac and signature
> 
> ANSI C memcmp is not constant time function per spec so it should
> be avoided in cryptography usage.
> 
> Fixes: d61f70b4c918 ("crypto/libcrypto: add driver for OpenSSL library")
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
>  drivers/crypto/openssl/rte_openssl_pmd.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c b/drivers/crypto/openssl/rte_openssl_pmd.c
> index 6504959..73ce383 100644
> --- a/drivers/crypto/openssl/rte_openssl_pmd.c
> +++ b/drivers/crypto/openssl/rte_openssl_pmd.c
> @@ -1529,7 +1529,7 @@ process_openssl_auth_op(struct openssl_qp *qp, struct rte_crypto_op *op,
>  	}
> 
>  	if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
> -		if (memcmp(dst, op->sym->auth.digest.data,
> +		if (CRYPTO_memcmp(dst, op->sym->auth.digest.data,
>  				sess->auth.digest_length) != 0) {
>  			op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
>  		}
> @@ -1914,7 +1914,7 @@ process_openssl_rsa_op(struct rte_crypto_op *cop,
>  				"Length of public_decrypt %d "
>  				"length of message %zd\n",
>  				ret, op->rsa.message.length);
> -		if ((ret <= 0) || (memcmp(tmp, op->rsa.message.data,
> +		if ((ret <= 0) || (CRYPTO_memcmp(tmp, op->rsa.message.data,
>  				op->rsa.message.length))) {
>  			OPENSSL_LOG(ERR, "RSA sign Verification failed");
>  			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
> --
> 2.1.0
Hadn't heard of that time const fn before so just read up on it - interesting.
Acked-by: Fiona Trahe <fiona.trahe@intel.com>

Re: [dpdk-dev] [PATCH] crypto/openssl: fix usage of non constant time memcmp for mac and signature

[Akhil Goyal]

> 
> 
> > -----Original Message-----
> > From: Kusztal, ArkadiuszX
> > Sent: Friday, May 31, 2019 7:59 AM
> > To: dev@dpdk.org
> > Cc: akhil.goyal@nxp.com; Trahe, Fiona <fiona.trahe@intel.com>; Doherty,
> Declan
> > <declan.doherty@intel.com>; Kusztal, ArkadiuszX
> <arkadiuszx.kusztal@intel.com>
> > Subject: [PATCH] crypto/openssl: fix usage of non constant time memcmp for
> mac and signature
> >
> > ANSI C memcmp is not constant time function per spec so it should
> > be avoided in cryptography usage.
> >
> > Fixes: d61f70b4c918 ("crypto/libcrypto: add driver for OpenSSL library")
> >
> > Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> > ---
> >  drivers/crypto/openssl/rte_openssl_pmd.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c
> b/drivers/crypto/openssl/rte_openssl_pmd.c
> > index 6504959..73ce383 100644
> > --- a/drivers/crypto/openssl/rte_openssl_pmd.c
> > +++ b/drivers/crypto/openssl/rte_openssl_pmd.c
> > @@ -1529,7 +1529,7 @@ process_openssl_auth_op(struct openssl_qp *qp,
> struct rte_crypto_op *op,
> >  	}
> >
> >  	if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
> > -		if (memcmp(dst, op->sym->auth.digest.data,
> > +		if (CRYPTO_memcmp(dst, op->sym->auth.digest.data,
> >  				sess->auth.digest_length) != 0) {
> >  			op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
> >  		}
> > @@ -1914,7 +1914,7 @@ process_openssl_rsa_op(struct rte_crypto_op *cop,
> >  				"Length of public_decrypt %d "
> >  				"length of message %zd\n",
> >  				ret, op->rsa.message.length);
> > -		if ((ret <= 0) || (memcmp(tmp, op->rsa.message.data,
> > +		if ((ret <= 0) || (CRYPTO_memcmp(tmp, op->rsa.message.data,
> >  				op->rsa.message.length))) {
> >  			OPENSSL_LOG(ERR, "RSA sign Verification failed");
> >  			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
> > --
> > 2.1.0
> Hadn't heard of that time const fn before so just read up on it - interesting.
> Acked-by: Fiona Trahe <fiona.trahe@intel.com>
> 
Modified the subject a bit.
Applied to dpdk-next-crypto

Thanks

Re: [dpdk-dev] [PATCH] crypto/openssl: fix inproper freeing of asymmetric crypto keys in rsa

[Akhil Goyal]

Hi Arek,

> In case big number need to be freed, data it contains should be cleared
> before especially if it is critical data like private keys.
> 
> Fixes: 3e9d6bd447fb ("crypto/openssl: add RSA and mod asym operations")
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
> ---
>  config/common_base                           |  4 ++--
>  drivers/crypto/openssl/rte_openssl_pmd_ops.c | 16 ++++++++--------
>  2 files changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/config/common_base b/config/common_base
> index 6b96e0e..a3d8e17 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -573,7 +573,7 @@ CONFIG_RTE_LIBRTE_PMD_OCTEONTX_CRYPTO=y
>  #
>  CONFIG_RTE_LIBRTE_PMD_QAT=y
>  CONFIG_RTE_LIBRTE_PMD_QAT_SYM=n
> -CONFIG_RTE_LIBRTE_PMD_QAT_ASYM=n
> +CONFIG_RTE_LIBRTE_PMD_QAT_ASYM=y
>  #
>  # Max. number of QuickAssist devices, which can be detected and attached
>  #
> @@ -597,7 +597,7 @@ CONFIG_RTE_LIBRTE_PMD_AESNI_MB=n
>  #
>  # Compile PMD for Software backed device
>  #
> -CONFIG_RTE_LIBRTE_PMD_OPENSSL=n
> +CONFIG_RTE_LIBRTE_PMD_OPENSSL=y
> 
I think these config changes were done by mistake in this patch.

Openssl cannot be enabled by default as it needs external codebase.

Please send fix only for openssl driver as the description says.

Thanks,
Akhil