[PATCH v4 0/3]crypto/openssl: support asymmetric crypto

[PATCH v4 0/3]crypto/openssl: support asymmetric crypto

[Shally Verma]

This patch series add asymmetric crypto support in openssl pmd
changes in v4:
- add openssl 1.1.0h support in openssl PMD for asym operations.
- A compat.h added for PMD compatibility with both 1.0.2 and 1.1.0
- update openssl document with asymmetric feature support 

For further history refer https://patches.dpdk.org/patch/40079/

Sunila Sahu (3):
  crypto/openssl: add rsa and mod asym op
  crypto/openssl: add dh and dsa asym op
  doc: add asym feature list

 doc/guides/cryptodevs/features/openssl.ini       |  11 +
 doc/guides/cryptodevs/openssl.rst                |   1 +
 drivers/crypto/openssl/compat.h                  | 108 +++++
 drivers/crypto/openssl/rte_openssl_pmd.c         | 466 +++++++++++++++++++-
 drivers/crypto/openssl/rte_openssl_pmd_ops.c     | 528 ++++++++++++++++++++++-
 drivers/crypto/openssl/rte_openssl_pmd_private.h |  28 ++
 6 files changed, 1130 insertions(+), 12 deletions(-)
 create mode 100644 drivers/crypto/openssl/compat.h

-- 
2.9.5

[PATCH v4 1/3] crypto/openssl: add rsa and mod asym op

[Shally Verma]

From: Sunila Sahu <sunila.sahu@caviumnetworks.com>

- Add compat.h to make pmd compatible to openssl-1.1.0 and
  backward version
- Add rsa sign/verify/encrypt/decrypt and modular operation
  support

Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
 drivers/crypto/openssl/compat.h                  |  40 +++
 drivers/crypto/openssl/rte_openssl_pmd.c         | 229 ++++++++++++++-
 drivers/crypto/openssl/rte_openssl_pmd_ops.c     | 336 ++++++++++++++++++++++-
 drivers/crypto/openssl/rte_openssl_pmd_private.h |  19 ++
 4 files changed, 612 insertions(+), 12 deletions(-)

diff --git a/drivers/crypto/openssl/compat.h b/drivers/crypto/openssl/compat.h
new file mode 100644
index 0000000..8ece808
--- /dev/null
+++ b/drivers/crypto/openssl/compat.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Cavium Networks
+ */
+
+#ifndef __RTA_COMPAT_H__
+#define __RTA_COMPAT_H__
+
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+
+#define set_rsa_params(rsa, p, q, ret) \
+	do {rsa->p = p; rsa->q = q; ret = 0; } while (0)
+
+#define set_rsa_crt_params(rsa, dmp1, dmq1, iqmp, ret) \
+	do { \
+		rsa->dmp1 = dmp1; \
+		rsa->dmq1 = dmq1; \
+		rsa->iqmp = iqmp; \
+		ret = 0; \
+	} while (0)
+
+#define set_rsa_keys(rsa, n, e, d, ret) \
+	do { \
+		rsa->n = n; rsa->e = e; rsa->d = d; ret = 0; \
+	} while (0)
+
+#else
+
+#define set_rsa_params(rsa, p, q, ret) \
+	(ret = !RSA_set0_factors(rsa, p, q))
+
+#define set_rsa_crt_params(rsa, dmp1, dmq1, iqmp, ret) \
+	(ret = !RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp))
+
+/* n, e must be non-null, d can be NULL */
+#define set_rsa_keys(rsa, n, e, d, ret) \
+	(ret = !RSA_set0_key(rsa, n, e, d))
+
+#endif /* version < 10100000 */
+
+#endif /* __RTA_COMPAT_H__ */
diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c b/drivers/crypto/openssl/rte_openssl_pmd.c
index 5228b92..e21a6a1 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd.c
@@ -14,6 +14,7 @@
 #include <openssl/evp.h>
 
 #include "rte_openssl_pmd_private.h"
+#include "compat.h"
 
 #define DES_BLOCK_SIZE 8
 
@@ -727,19 +728,36 @@ openssl_reset_session(struct openssl_session *sess)
 }
 
 /** Provide session for operation */
-static struct openssl_session *
+static void *
 get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
 {
 	struct openssl_session *sess = NULL;
+	struct openssl_asym_session *asym_sess = NULL;
 
 	if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
-		/* get existing session */
-		if (likely(op->sym->session != NULL))
-			sess = (struct openssl_session *)
-					get_sym_session_private_data(
-					op->sym->session,
-					cryptodev_driver_id);
+		if (op->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC) {
+			/* get existing session */
+			if (likely(op->sym->session != NULL))
+				sess = (struct openssl_session *)
+						get_sym_session_private_data(
+						op->sym->session,
+						cryptodev_driver_id);
+		} else {
+			if (likely(op->asym->session != NULL))
+				asym_sess = (struct openssl_asym_session *)
+						get_asym_session_private_data(
+						op->asym->session,
+						cryptodev_driver_id);
+			if (asym_sess == NULL)
+				op->status =
+					RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
+			return asym_sess;
+		}
 	} else {
+		/* sessionless asymmetric not supported */
+		if (op->type == RTE_CRYPTO_OP_TYPE_ASYMMETRIC)
+			return NULL;
+
 		/* provide internal session */
 		void *_sess = NULL;
 		void *_sess_private_data = NULL;
@@ -1525,6 +1543,191 @@ process_openssl_auth_op(struct openssl_qp *qp, struct rte_crypto_op *op,
 		op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 }
 
+/* process modinv operation */
+static int process_openssl_modinv_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	struct rte_crypto_asym_op *op = cop->asym;
+	BIGNUM *base = BN_CTX_get(sess->u.m.ctx);
+	BIGNUM *res = BN_CTX_get(sess->u.m.ctx);
+
+	if (unlikely(base == NULL || res == NULL)) {
+		if (base)
+			BN_free(base);
+		if (res)
+			BN_free(res);
+		cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+		return -1;
+	}
+
+	base = BN_bin2bn((const unsigned char *)op->modinv.base.data,
+			op->modinv.base.length, base);
+
+	if (BN_mod_inverse(res, base, sess->u.m.modulus, sess->u.m.ctx)) {
+		cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+		op->modinv.base.length = BN_bn2bin(res, op->modinv.base.data);
+	} else {
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+	}
+
+	return 0;
+}
+
+/* process modexp operation */
+static int process_openssl_modexp_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	struct rte_crypto_asym_op *op = cop->asym;
+	BIGNUM *base = BN_CTX_get(sess->u.e.ctx);
+	BIGNUM *res = BN_CTX_get(sess->u.e.ctx);
+
+	if (unlikely(base == NULL || res == NULL)) {
+		if (base)
+			BN_free(base);
+		if (res)
+			BN_free(res);
+		cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+		return -1;
+	}
+
+	base = BN_bin2bn((const unsigned char *)op->modinv.base.data,
+			op->modinv.base.length, base);
+
+	if (BN_mod_exp(res, base, sess->u.e.exp,
+				sess->u.e.mod, sess->u.e.ctx)) {
+		op->modinv.base.length = BN_bn2bin(res, op->modinv.base.data);
+		cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+	} else {
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+	}
+
+	return 0;
+}
+
+/* process rsa operations */
+static int process_openssl_rsa_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	int ret = 0;
+	struct rte_crypto_asym_op *op = cop->asym;
+	RSA *rsa = sess->u.r.rsa;
+	uint32_t pad = (op->rsa.pad);
+
+	switch (pad) {
+	case RTE_CRYPTO_RSA_PKCS1_V1_5_BT0:
+	case RTE_CRYPTO_RSA_PKCS1_V1_5_BT1:
+	case RTE_CRYPTO_RSA_PKCS1_V1_5_BT2:
+		pad = RSA_PKCS1_PADDING;
+		break;
+	case RTE_CRYPTO_RSA_PADDING_NONE:
+		pad = RSA_NO_PADDING;
+		break;
+	default:
+		cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+		OPENSSL_LOG(ERR,
+				"rsa pad type not supported %d\n", pad);
+		return 0;
+	}
+
+	switch (op->rsa.op_type) {
+	case RTE_CRYPTO_ASYM_OP_ENCRYPT:
+		ret = RSA_public_encrypt(op->rsa.message.length,
+				op->rsa.message.data,
+				op->rsa.message.data,
+				rsa,
+				pad);
+
+		if (ret > 0)
+			op->rsa.message.length = ret;
+		OPENSSL_LOG(DEBUG,
+				"length of encrypted text %d\n", ret);
+		break;
+
+	case RTE_CRYPTO_ASYM_OP_DECRYPT:
+		ret = RSA_private_decrypt(op->rsa.message.length,
+				op->rsa.message.data,
+				op->rsa.message.data,
+				rsa,
+				pad);
+		if (ret > 0)
+			op->rsa.message.length = ret;
+		break;
+
+	case RTE_CRYPTO_ASYM_OP_SIGN:
+		ret = RSA_private_encrypt(op->rsa.message.length,
+				op->rsa.message.data,
+				op->rsa.sign.data,
+				rsa,
+				pad);
+		if (ret > 0)
+			op->rsa.sign.length = ret;
+		break;
+
+	case RTE_CRYPTO_ASYM_OP_VERIFY:
+		ret = RSA_public_decrypt(op->rsa.sign.length,
+				op->rsa.sign.data,
+				op->rsa.sign.data,
+				rsa,
+				pad);
+
+		OPENSSL_LOG(DEBUG,
+				"Length of public_decrypt %d "
+				"length of message %zd\n",
+				ret, op->rsa.message.length);
+
+		if (memcmp(op->rsa.sign.data, op->rsa.message.data,
+					op->rsa.message.length)) {
+			OPENSSL_LOG(ERR,
+					"RSA sign Verification failed");
+			return -1;
+		}
+	default:
+		/* allow ops with invalid args to be pushed to
+		 * completion queue
+		 */
+		cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+		break;
+	}
+
+	if (ret < 0)
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+
+	return 0;
+}
+
+static int
+process_asym_op(struct openssl_qp *qp, struct rte_crypto_op *op,
+		struct openssl_asym_session *sess)
+{
+	int retval = 0;
+
+	op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+
+	switch (sess->xfrm_type) {
+	case RTE_CRYPTO_ASYM_XFORM_RSA:
+		retval = process_openssl_rsa_op(op, sess);
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_MODEX:
+		retval = process_openssl_modexp_op(op, sess);
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_MODINV:
+		retval = process_openssl_modinv_op(op, sess);
+		break;
+	default:
+		op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+		break;
+	}
+	if (!retval) {
+		/* op processed so push to completion queue as processed */
+		retval = rte_ring_enqueue(qp->processed_ops, (void *)op);
+		if (retval)
+			/* return error if failed to put in completion queue */
+			retval = -1;
+	}
+
+	return retval;
+}
+
 /** Process crypto operation for mbuf */
 static int
 process_op(struct openssl_qp *qp, struct rte_crypto_op *op,
@@ -1597,7 +1800,7 @@ static uint16_t
 openssl_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 		uint16_t nb_ops)
 {
-	struct openssl_session *sess;
+	void *sess;
 	struct openssl_qp *qp = queue_pair;
 	int i, retval;
 
@@ -1606,7 +1809,12 @@ openssl_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 		if (unlikely(sess == NULL))
 			goto enqueue_err;
 
-		retval = process_op(qp, ops[i], sess);
+		if (ops[i]->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC)
+			retval = process_op(qp, ops[i],
+					(struct openssl_session *) sess);
+		else
+			retval = process_asym_op(qp, ops[i],
+					(struct openssl_asym_session *) sess);
 		if (unlikely(retval < 0))
 			goto enqueue_err;
 	}
@@ -1661,7 +1869,8 @@ cryptodev_openssl_create(const char *name,
 			RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 			RTE_CRYPTODEV_FF_CPU_AESNI |
 			RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
-			RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT;
+			RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT |
+			RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO;
 
 	/* Set vector instructions mode supported */
 	internals = dev->data->dev_private;
diff --git a/drivers/crypto/openssl/rte_openssl_pmd_ops.c b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
index 5335685..a23a9e2 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd_ops.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
@@ -9,6 +9,7 @@
 #include <rte_cryptodev_pmd.h>
 
 #include "rte_openssl_pmd_private.h"
+#include "compat.h"
 
 
 static const struct rte_cryptodev_capabilities openssl_pmd_capabilities[] = {
@@ -469,6 +470,63 @@ static const struct rte_cryptodev_capabilities openssl_pmd_capabilities[] = {
 			}, }
 		}, }
 	},
+	{	/* RSA */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_RSA,
+				.op_types = ((1 << RTE_CRYPTO_ASYM_OP_SIGN) |
+					(1 << RTE_CRYPTO_ASYM_OP_VERIFY) |
+					(1 << RTE_CRYPTO_ASYM_OP_ENCRYPT) |
+					(1 << RTE_CRYPTO_ASYM_OP_DECRYPT)),
+				{
+				.modlen = {
+				/* min length is based on openssl rsa keygen */
+				.min = 30,
+				/* value 0 symbolizes no limit on max length */
+				.max = 0,
+				.increment = 1
+				}, }
+			}
+		},
+		}
+	},
+	{	/* modexp */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_MODEX,
+				.op_types = 0,
+				{
+				.modlen = {
+				/* value 0 symbolizes no limit on min length */
+				.min = 0,
+				/* value 0 symbolizes no limit on max length */
+				.max = 0,
+				.increment = 1
+				}, }
+			}
+		},
+		}
+	},
+	{	/* modinv */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_MODINV,
+				.op_types = 0,
+				{
+				.modlen = {
+				/* value 0 symbolizes no limit on min length */
+				.min = 0,
+				/* value 0 symbolizes no limit on max length */
+				.max = 0,
+				.increment = 1
+				}, }
+			}
+		},
+		}
+	},
 
 	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 };
@@ -655,13 +713,20 @@ openssl_pmd_qp_count(struct rte_cryptodev *dev)
 	return dev->data->nb_queue_pairs;
 }
 
-/** Returns the size of the session structure */
+/** Returns the size of the symmetric session structure */
 static unsigned
 openssl_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
 {
 	return sizeof(struct openssl_session);
 }
 
+/** Returns the size of the asymmetric session structure */
+static unsigned
+openssl_pmd_asym_session_get_size(struct rte_cryptodev *dev __rte_unused)
+{
+	return sizeof(struct openssl_asym_session);
+}
+
 /** Configure the session from a crypto xform chain */
 static int
 openssl_pmd_sym_session_configure(struct rte_cryptodev *dev __rte_unused,
@@ -698,6 +763,226 @@ openssl_pmd_sym_session_configure(struct rte_cryptodev *dev __rte_unused,
 	return 0;
 }
 
+static int openssl_set_asym_session_parameters(
+		struct openssl_asym_session *asym_session,
+		struct rte_crypto_asym_xform *xform)
+{
+	int ret = 0;
+
+	if (xform->next != NULL) {
+		OPENSSL_LOG(ERR, "chained xfrms are not supported on %s",
+			rte_crypto_asym_xform_strings[xform->xform_type]);
+		return -1;
+	}
+
+	switch (xform->xform_type) {
+	case RTE_CRYPTO_ASYM_XFORM_RSA:
+	{
+		BIGNUM *n = NULL;
+		BIGNUM *e = NULL;
+		BIGNUM *d = NULL;
+		BIGNUM *p = NULL, *q = NULL, *dmp1 = NULL;
+		BIGNUM *iqmp = NULL, *dmq1 = NULL;
+
+		/* copy xfrm data into rsa struct */
+		n = BN_bin2bn((const unsigned char *)xform->rsa.n.data,
+				xform->rsa.n.length, n);
+		e = BN_bin2bn((const unsigned char *)xform->rsa.e.data,
+				xform->rsa.e.length, e);
+
+		if (!n || !e)
+			goto err_rsa;
+
+		RSA *rsa = RSA_new();
+		if (rsa == NULL)
+			goto err_rsa;
+
+		if (xform->rsa.key_type == RTE_RSA_KEY_TYPE_EXP) {
+			d = BN_bin2bn(
+			(const unsigned char *)xform->rsa.d.data,
+			xform->rsa.d.length,
+			d);
+			if (!d) {
+				RSA_free(rsa);
+				goto err_rsa;
+			}
+		} else {
+			p = BN_bin2bn((const unsigned char *)
+					xform->rsa.qt.p.data,
+					xform->rsa.qt.p.length,
+					p);
+			q = BN_bin2bn((const unsigned char *)
+					xform->rsa.qt.q.data,
+					xform->rsa.qt.q.length,
+					q);
+			dmp1 = BN_bin2bn((const unsigned char *)
+					xform->rsa.qt.dP.data,
+					xform->rsa.qt.dP.length,
+					dmp1);
+			dmq1 = BN_bin2bn((const unsigned char *)
+					xform->rsa.qt.dQ.data,
+					xform->rsa.qt.dQ.length,
+					dmq1);
+			iqmp = BN_bin2bn((const unsigned char *)
+					xform->rsa.qt.qInv.data,
+					xform->rsa.qt.qInv.length,
+					iqmp);
+
+			if (!p || !q || !dmp1 || !dmq1 || !iqmp) {
+				RSA_free(rsa);
+				goto err_rsa;
+			}
+			set_rsa_params(rsa, p, q, ret);
+			if (ret) {
+				OPENSSL_LOG(ERR,
+					"failed to set rsa params\n");
+				RSA_free(rsa);
+				goto err_rsa;
+			}
+			set_rsa_crt_params(rsa, dmp1, dmq1, iqmp, ret);
+			if (ret) {
+				OPENSSL_LOG(ERR,
+					"failed to set crt params\n");
+				RSA_free(rsa);
+				/*
+				 * set already populated params to NULL
+				 * as its freed by call to RSA_free
+				 */
+				p = q = NULL;
+				goto err_rsa;
+			}
+		}
+
+		set_rsa_keys(rsa, n, e, d, ret);
+		if (ret) {
+			OPENSSL_LOG(ERR, "Failed to load rsa keys\n");
+			RSA_free(rsa);
+			return -1;
+		}
+		asym_session->u.r.rsa = rsa;
+		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_RSA;
+		break;
+err_rsa:
+		if (n)
+			BN_free(n);
+		if (e)
+			BN_free(e);
+		if (d)
+			BN_free(d);
+		if (p)
+			BN_free(p);
+		if (q)
+			BN_free(q);
+		if (dmp1)
+			BN_free(dmp1);
+		if (dmq1)
+			BN_free(dmq1);
+		if (iqmp)
+			BN_free(iqmp);
+
+		return -1;
+	}
+	case RTE_CRYPTO_ASYM_XFORM_MODEX:
+	{
+		struct rte_crypto_modex_xform *xfrm = &(xform->modex);
+
+		BN_CTX *ctx = BN_CTX_new();
+		if (ctx == NULL) {
+			OPENSSL_LOG(ERR,
+				" failed to allocate resources\n");
+			return -1;
+		}
+		BN_CTX_start(ctx);
+		BIGNUM *mod = BN_CTX_get(ctx);
+		BIGNUM *exp = BN_CTX_get(ctx);
+		if (mod == NULL || exp == NULL) {
+			BN_CTX_end(ctx);
+			BN_CTX_free(ctx);
+			return -1;
+		}
+
+		mod = BN_bin2bn((const unsigned char *)
+				xfrm->modulus.data,
+				xfrm->modulus.length, mod);
+		exp = BN_bin2bn((const unsigned char *)
+				xfrm->exponent.data,
+				xfrm->exponent.length, exp);
+		asym_session->u.e.ctx = ctx;
+		asym_session->u.e.mod = mod;
+		asym_session->u.e.exp = exp;
+		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_MODEX;
+		break;
+	}
+	case RTE_CRYPTO_ASYM_XFORM_MODINV:
+	{
+		struct rte_crypto_modinv_xform *xfrm = &(xform->modinv);
+
+		BN_CTX *ctx = BN_CTX_new();
+		if (ctx == NULL) {
+			OPENSSL_LOG(ERR,
+				" failed to allocate resources\n");
+			return -1;
+		}
+		BN_CTX_start(ctx);
+		BIGNUM *mod = BN_CTX_get(ctx);
+		if (mod == NULL) {
+			BN_CTX_end(ctx);
+			BN_CTX_free(ctx);
+			return -1;
+		}
+
+		mod = BN_bin2bn((const unsigned char *)
+				xfrm->modulus.data,
+				xfrm->modulus.length,
+				mod);
+		asym_session->u.m.ctx = ctx;
+		asym_session->u.m.modulus = mod;
+		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_MODINV;
+		break;
+	}
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
+/** Configure the session from a crypto xform chain */
+static int
+openssl_pmd_asym_session_configure(struct rte_cryptodev *dev __rte_unused,
+		struct rte_crypto_asym_xform *xform,
+		struct rte_cryptodev_asym_session *sess,
+		struct rte_mempool *mempool)
+{
+	void *asym_sess_private_data;
+	int ret;
+
+	if (unlikely(sess == NULL)) {
+		OPENSSL_LOG(ERR, "invalid asymmetric session struct");
+		return -EINVAL;
+	}
+
+	if (rte_mempool_get(mempool, &asym_sess_private_data)) {
+		CDEV_LOG_ERR(
+			"Couldn't get object from session mempool");
+		return -ENOMEM;
+	}
+
+	ret = openssl_set_asym_session_parameters(asym_sess_private_data,
+			xform);
+	if (ret != 0) {
+		OPENSSL_LOG(ERR, "failed configure session parameters");
+
+		/* Return session to mempool */
+		rte_mempool_put(mempool, asym_sess_private_data);
+		return ret;
+	}
+
+	set_asym_session_private_data(sess, dev->driver_id,
+			asym_sess_private_data);
+
+	return 0;
+}
 
 /** Clear the memory of session so it doesn't leave key material behind */
 static void
@@ -717,6 +1002,50 @@ openssl_pmd_sym_session_clear(struct rte_cryptodev *dev,
 	}
 }
 
+static void openssl_reset_asym_session(struct openssl_asym_session *sess)
+{
+	switch (sess->xfrm_type) {
+	case RTE_CRYPTO_ASYM_XFORM_RSA:
+		if (sess->u.r.rsa)
+			RSA_free(sess->u.r.rsa);
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_MODEX:
+		if (sess->u.e.ctx) {
+			BN_CTX_end(sess->u.e.ctx);
+			BN_CTX_free(sess->u.e.ctx);
+		}
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_MODINV:
+		if (sess->u.m.ctx) {
+			BN_CTX_end(sess->u.m.ctx);
+			BN_CTX_free(sess->u.m.ctx);
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+/** Clear the memory of asymmetric session
+ * so it doesn't leave key material behind
+ */
+static void
+openssl_pmd_asym_session_clear(struct rte_cryptodev *dev,
+		struct rte_cryptodev_asym_session *sess)
+{
+	uint8_t index = dev->driver_id;
+	void *sess_priv = get_asym_session_private_data(sess, index);
+
+	/* Zero out the whole structure */
+	if (sess_priv) {
+		openssl_reset_asym_session(sess_priv);
+		memset(sess_priv, 0, sizeof(struct openssl_asym_session));
+		struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
+		set_asym_session_private_data(sess, index, NULL);
+		rte_mempool_put(sess_mp, sess_priv);
+	}
+}
+
 struct rte_cryptodev_ops openssl_pmd_ops = {
 		.dev_configure		= openssl_pmd_config,
 		.dev_start		= openssl_pmd_start,
@@ -733,8 +1062,11 @@ struct rte_cryptodev_ops openssl_pmd_ops = {
 		.queue_pair_count	= openssl_pmd_qp_count,
 
 		.sym_session_get_size	= openssl_pmd_sym_session_get_size,
+		.asym_session_get_size	= openssl_pmd_asym_session_get_size,
 		.sym_session_configure	= openssl_pmd_sym_session_configure,
-		.sym_session_clear	= openssl_pmd_sym_session_clear
+		.asym_session_configure	= openssl_pmd_asym_session_configure,
+		.sym_session_clear	= openssl_pmd_sym_session_clear,
+		.asym_session_clear	= openssl_pmd_asym_session_clear
 };
 
 struct rte_cryptodev_ops *rte_openssl_pmd_ops = &openssl_pmd_ops;
diff --git a/drivers/crypto/openssl/rte_openssl_pmd_private.h b/drivers/crypto/openssl/rte_openssl_pmd_private.h
index 29fcb76..0ebe596 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd_private.h
+++ b/drivers/crypto/openssl/rte_openssl_pmd_private.h
@@ -8,6 +8,7 @@
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
 #include <openssl/des.h>
+#include <openssl/rsa.h>
 
 #define CRYPTODEV_NAME_OPENSSL_PMD	crypto_openssl
 /**< Open SSL Crypto PMD device name */
@@ -142,6 +143,24 @@ struct openssl_session {
 
 } __rte_cache_aligned;
 
+/** OPENSSL crypto private asymmetric session structure */
+struct openssl_asym_session {
+	enum rte_crypto_asym_xform_type xfrm_type;
+	union {
+		struct rsa {
+			RSA *rsa;
+		} r;
+		struct exp {
+			BIGNUM *exp;
+			BIGNUM *mod;
+			BN_CTX *ctx;
+		} e;
+		struct mod {
+			BIGNUM *modulus;
+			BN_CTX *ctx;
+		} m;
+	} u;
+} __rte_cache_aligned;
 /** Set and validate OPENSSL crypto session parameters */
 extern int
 openssl_set_session_parameters(struct openssl_session *sess,
-- 
2.9.5

[PATCH v4 2/3] crypto/openssl: add dh and dsa asym op

[Shally Verma]

From: Sunila Sahu <sunila.sahu@caviumnetworks.com>

- Add dh key generation and shared compute
- Add dsa sign and verify operation

Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
 drivers/crypto/openssl/compat.h                  |  68 +++++++
 drivers/crypto/openssl/rte_openssl_pmd.c         | 237 +++++++++++++++++++++++
 drivers/crypto/openssl/rte_openssl_pmd_ops.c     | 194 ++++++++++++++++++-
 drivers/crypto/openssl/rte_openssl_pmd_private.h |   9 +
 4 files changed, 507 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/openssl/compat.h b/drivers/crypto/openssl/compat.h
index 8ece808..45f9a33 100644
--- a/drivers/crypto/openssl/compat.h
+++ b/drivers/crypto/openssl/compat.h
@@ -23,6 +23,41 @@
 		rsa->n = n; rsa->e = e; rsa->d = d; ret = 0; \
 	} while (0)
 
+#define set_dh_params(dh, p, g, ret) \
+	do { \
+		dh->p = p; \
+		dh->q = NULL; \
+		dh->g = g; \
+		ret = 0; \
+	} while (0)
+
+#define set_dh_priv_key(dh, priv_key, ret) \
+	do { dh->priv_key = priv_key; ret = 0; } while (0)
+
+#define set_dsa_params(dsa, p, q, g, ret) \
+	do { dsa->p = p; dsa->q = q; dsa->g = g; ret = 0; } while (0)
+
+#define get_dh_pub_key(dh, pub_key) \
+	(pub_key = dh->pub_key)
+
+#define get_dh_priv_key(dh, priv_key) \
+	(priv_key = dh->priv_key)
+
+#define set_dsa_sign(sign, r, s) \
+	do { sign->r = r; sign->s = s; } while (0)
+
+#define get_dsa_sign(sign, r, s) \
+	do { r = sign->r; s = sign->s; } while (0)
+
+#define set_dsa_keys(dsa, pub, priv, ret) \
+	do { dsa->pub_key = pub; dsa->priv_key = priv; ret = 0; } while (0)
+
+#define set_dsa_pub_key(dsa, pub_key) \
+	(dsa->pub_key = pub_key)
+
+#define get_dsa_priv_key(dsa, priv_key) \
+	(priv_key = dsa->priv_key)
+
 #else
 
 #define set_rsa_params(rsa, p, q, ret) \
@@ -35,6 +70,39 @@
 #define set_rsa_keys(rsa, n, e, d, ret) \
 	(ret = !RSA_set0_key(rsa, n, e, d))
 
+#define set_dh_params(dh, p, g, ret) \
+	(ret = !DH_set0_pqg(dh, p, NULL, g))
+
+#define set_dh_priv_key(dh, priv_key, ret) \
+	(ret = !DH_set0_key(dh, NULL, priv_key))
+
+#define get_dh_pub_key(dh, pub_key) \
+	(DH_get0_key(dh_key, &pub_key, NULL))
+
+#define get_dh_priv_key(dh, priv_key) \
+	(DH_get0_key(dh_key, NULL, &priv_key))
+
+#define set_dsa_params(dsa, p, q, g, ret) \
+	(ret = !DSA_set0_pqg(dsa, p, q, g))
+
+#define set_dsa_priv_key(dsa, priv_key) \
+	(DSA_set0_key(dsa, NULL, priv_key))
+
+#define set_dsa_sign(sign, r, s) \
+	(DSA_SIG_set0(sign, r, s))
+
+#define get_dsa_sign(sign, r, s) \
+	(DSA_SIG_get0(sign, &r, &s))
+
+#define set_dsa_keys(dsa, pub, priv, ret) \
+	(ret = !DSA_set0_key(dsa, pub, priv))
+
+#define set_dsa_pub_key(dsa, pub_key) \
+	(DSA_set0_key(dsa, pub_key, NULL))
+
+#define get_dsa_priv_key(dsa, priv_key) \
+	(DSA_get0_key(dsa, NULL, &priv_key))
+
 #endif /* version < 10100000 */
 
 #endif /* __RTA_COMPAT_H__ */
diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c b/drivers/crypto/openssl/rte_openssl_pmd.c
index e21a6a1..3314802 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd.c
@@ -1543,6 +1543,230 @@ process_openssl_auth_op(struct openssl_qp *qp, struct rte_crypto_op *op,
 		op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 }
 
+/* process dsa sign operation */
+static int
+process_openssl_dsa_sign_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	struct rte_crypto_dsa_op_param *op = &cop->asym->dsa;
+	DSA *dsa = sess->u.s.dsa;
+	DSA_SIG *sign = NULL;
+
+	sign = DSA_do_sign(op->message.data,
+			op->message.length,
+			dsa);
+
+	if (sign == NULL) {
+		OPENSSL_LOG(ERR, "%s:%d\n", __func__, __LINE__);
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+	} else {
+		const BIGNUM *r = NULL, *s = NULL;
+		get_dsa_sign(sign, r, s);
+
+		op->r.length = BN_bn2bin(r, op->r.data);
+		op->s.length = BN_bn2bin(s, op->s.data);
+		cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+	}
+
+	DSA_SIG_free(sign);
+
+	return 0;
+}
+
+/* process dsa verify operation */
+static int
+process_openssl_dsa_verify_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	struct rte_crypto_dsa_op_param *op = &cop->asym->dsa;
+	DSA *dsa = sess->u.s.dsa;
+	int ret;
+	DSA_SIG *sign = DSA_SIG_new();
+	BIGNUM *r = NULL, *s = NULL;
+	BIGNUM *pub_key = NULL;
+
+	if (sign == NULL) {
+		OPENSSL_LOG(ERR, " %s:%d\n", __func__, __LINE__);
+		cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+		return -1;
+	}
+
+	r = BN_bin2bn(op->r.data,
+			op->r.length,
+			r);
+	s = BN_bin2bn(op->s.data,
+			op->s.length,
+			s);
+	pub_key = BN_bin2bn(op->y.data,
+			op->y.length,
+			pub_key);
+	if (!r || !s || !pub_key) {
+		if (r)
+			BN_free(r);
+		if (s)
+			BN_free(s);
+		if (pub_key)
+			BN_free(pub_key);
+
+		cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+		return -1;
+	}
+	set_dsa_sign(sign, r, s);
+	set_dsa_pub_key(dsa, pub_key);
+
+	ret = DSA_do_verify(op->message.data,
+			op->message.length,
+			sign,
+			dsa);
+
+	if (ret != 1)
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+	else
+		cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+
+	DSA_SIG_free(sign);
+
+	return 0;
+}
+
+/* process dh operation */
+static int
+process_openssl_dh_op(struct rte_crypto_op *cop,
+		struct openssl_asym_session *sess)
+{
+	struct rte_crypto_dh_op_param *op = &cop->asym->dh;
+	DH *dh_key = sess->u.dh.dh_key;
+	BIGNUM *priv_key = NULL;
+	int ret = 0;
+
+	if (sess->u.dh.key_op &
+			(1 << RTE_CRYPTO_ASYM_OP_SHARED_SECRET_COMPUTE)) {
+		/* compute shared secret using peer public key
+		 * and current private key
+		 * shared secret = peer_key ^ priv_key mod p
+		 */
+		BIGNUM *peer_key = NULL;
+
+		/* copy private key and peer key and compute shared secret */
+		peer_key = BN_bin2bn(op->pub_key.data,
+				op->pub_key.length,
+				peer_key);
+		if (peer_key == NULL) {
+			cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+			return -1;
+		}
+		priv_key = BN_bin2bn(op->priv_key.data,
+				op->priv_key.length,
+				priv_key);
+		if (priv_key == NULL) {
+			BN_free(peer_key);
+			cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+			return -1;
+		}
+		set_dh_priv_key(dh_key, priv_key, ret);
+		if (ret) {
+			OPENSSL_LOG(ERR, "Failed to set private key\n");
+			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+			BN_free(peer_key);
+			BN_free(priv_key);
+			return 0;
+		}
+
+		ret = DH_compute_key(
+				op->shared_secret.data,
+				peer_key, dh_key);
+		if (ret < 0) {
+			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+			BN_free(peer_key);
+			/* priv key is already loaded into dh,
+			 * let's not free that directly here.
+			 * DH_free() will auto free it later.
+			 */
+			return 0;
+		}
+		cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+		op->shared_secret.length = ret;
+		BN_free(peer_key);
+		return 0;
+	}
+
+	/*
+	 * other options are public and private key generations.
+	 *
+	 * if user provides private key,
+	 * then first set DH with user provided private key
+	 */
+	if ((sess->u.dh.key_op &
+			(1 << RTE_CRYPTO_ASYM_OP_PUBLIC_KEY_GENERATE)) &&
+			!(sess->u.dh.key_op &
+			(1 << RTE_CRYPTO_ASYM_OP_PRIVATE_KEY_GENERATE))) {
+		/* generate public key using user-provided private key
+		 * pub_key = g ^ priv_key mod p
+		 */
+
+		/* load private key into DH */
+		priv_key = BN_bin2bn(op->priv_key.data,
+				op->priv_key.length,
+				priv_key);
+		if (priv_key == NULL) {
+			cop->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+			return -1;
+		}
+		set_dh_priv_key(dh_key, priv_key, ret);
+		if (ret) {
+			OPENSSL_LOG(ERR, "Failed to set private key\n");
+			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+			BN_free(priv_key);
+			return 0;
+		}
+	}
+
+	/* generate public and private key pair.
+	 *
+	 * if private key already set, generates only public key.
+	 *
+	 * if private key is not already set, then set it to random value
+	 * and update internal private key.
+	 */
+	if (!DH_generate_key(dh_key)) {
+		cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
+		return 0;
+	}
+
+	if (sess->u.dh.key_op & (1 << RTE_CRYPTO_ASYM_OP_PUBLIC_KEY_GENERATE)) {
+		const BIGNUM *pub_key = NULL;
+
+		OPENSSL_LOG(DEBUG, "%s:%d update public key\n",
+				__func__, __LINE__);
+
+		/* get the generated keys */
+		get_dh_pub_key(dh_key, pub_key);
+
+		/* output public key */
+		op->pub_key.length = BN_bn2bin(pub_key,
+				op->pub_key.data);
+	}
+
+	if (sess->u.dh.key_op &
+			(1 << RTE_CRYPTO_ASYM_OP_PRIVATE_KEY_GENERATE)) {
+		const BIGNUM *priv_key = NULL;
+
+		OPENSSL_LOG(DEBUG, "%s:%d updated priv key\n",
+				__func__, __LINE__);
+
+		/* get the generated keys */
+		get_dh_priv_key(dh_key, priv_key);
+
+		/* provide generated private key back to user */
+		op->priv_key.length = BN_bn2bin(priv_key,
+				op->priv_key.data);
+	}
+
+	cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+
+	return 0;
+}
+
 /* process modinv operation */
 static int process_openssl_modinv_op(struct rte_crypto_op *cop,
 		struct openssl_asym_session *sess)
@@ -1713,6 +1937,19 @@ process_asym_op(struct openssl_qp *qp, struct rte_crypto_op *op,
 	case RTE_CRYPTO_ASYM_XFORM_MODINV:
 		retval = process_openssl_modinv_op(op, sess);
 		break;
+	case RTE_CRYPTO_ASYM_XFORM_DH:
+		retval = process_openssl_dh_op(op, sess);
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_DSA:
+		if (op->asym->dsa.op_type == RTE_CRYPTO_ASYM_OP_SIGN)
+			retval = process_openssl_dsa_sign_op(op, sess);
+		else if (op->asym->dsa.op_type ==
+				RTE_CRYPTO_ASYM_OP_VERIFY)
+			retval =
+				process_openssl_dsa_verify_op(op, sess);
+		else
+			op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+		break;
 	default:
 		op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 		break;
diff --git a/drivers/crypto/openssl/rte_openssl_pmd_ops.c b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
index a23a9e2..ee31e1b 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd_ops.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd_ops.c
@@ -527,6 +527,48 @@ static const struct rte_cryptodev_capabilities openssl_pmd_capabilities[] = {
 		},
 		}
 	},
+	{	/* dh */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_DH,
+				.op_types =
+				((1<<RTE_CRYPTO_ASYM_OP_PRIVATE_KEY_GENERATE) |
+				(1 << RTE_CRYPTO_ASYM_OP_PUBLIC_KEY_GENERATE |
+				(1 <<
+				RTE_CRYPTO_ASYM_OP_SHARED_SECRET_COMPUTE))),
+				{
+				.modlen = {
+				/* value 0 symbolizes no limit on min length */
+				.min = 0,
+				/* value 0 symbolizes no limit on max length */
+				.max = 0,
+				.increment = 1
+				}, }
+			}
+		},
+		}
+	},
+	{	/* dsa */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_DSA,
+				.op_types =
+				((1<<RTE_CRYPTO_ASYM_OP_SIGN) |
+				(1 << RTE_CRYPTO_ASYM_OP_VERIFY)),
+				{
+				.modlen = {
+				/* value 0 symbolizes no limit on min length */
+				.min = 0,
+				/* value 0 symbolizes no limit on max length */
+				.max = 0,
+				.increment = 1
+				}, }
+			}
+		},
+		}
+	},
 
 	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 };
@@ -769,7 +811,8 @@ static int openssl_set_asym_session_parameters(
 {
 	int ret = 0;
 
-	if (xform->next != NULL) {
+	if ((xform->xform_type != RTE_CRYPTO_ASYM_XFORM_DH) &&
+		(xform->next != NULL)) {
 		OPENSSL_LOG(ERR, "chained xfrms are not supported on %s",
 			rte_crypto_asym_xform_strings[xform->xform_type]);
 		return -1;
@@ -940,6 +983,147 @@ static int openssl_set_asym_session_parameters(
 		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_MODINV;
 		break;
 	}
+	case RTE_CRYPTO_ASYM_XFORM_DH:
+	{
+		BIGNUM *p = NULL;
+		BIGNUM *g = NULL;
+
+		p = BN_bin2bn((const unsigned char *)
+				xform->dh.p.data,
+				xform->dh.p.length,
+				p);
+		g = BN_bin2bn((const unsigned char *)
+				xform->dh.g.data,
+				xform->dh.g.length,
+				g);
+		if (!p || !g)
+			goto err_dh;
+
+		DH *dh = DH_new();
+		if (dh == NULL) {
+			OPENSSL_LOG(ERR,
+				"failed to allocate resources\n");
+			goto err_dh;
+		}
+		set_dh_params(dh, p, g, ret);
+		if (ret) {
+			DH_free(dh);
+			goto err_dh;
+		}
+
+		/*
+		 * setup xfrom for
+		 * public key generate, or
+		 * DH Priv key generate, or both
+		 * public and private key generate
+		 */
+		asym_session->u.dh.key_op = (1 << xform->dh.type);
+
+		if (xform->dh.type ==
+			RTE_CRYPTO_ASYM_OP_PRIVATE_KEY_GENERATE) {
+			/* check if next is pubkey */
+			if ((xform->next != NULL) &&
+				(xform->next->xform_type ==
+				RTE_CRYPTO_ASYM_XFORM_DH) &&
+				(xform->next->dh.type ==
+				RTE_CRYPTO_ASYM_OP_PUBLIC_KEY_GENERATE)
+				) {
+				/*
+				 * setup op as pub/priv key
+				 * pair generationi
+				 */
+				asym_session->u.dh.key_op |=
+				(1 <<
+				RTE_CRYPTO_ASYM_OP_PUBLIC_KEY_GENERATE);
+			}
+		}
+		asym_session->u.dh.dh_key = dh;
+		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_DH;
+		break;
+
+err_dh:
+		OPENSSL_LOG(ERR, " failed to set dh params\n");
+		if (p)
+			BN_free(p);
+		if (g)
+			BN_free(g);
+		return -1;
+	}
+	case RTE_CRYPTO_ASYM_XFORM_DSA:
+	{
+		BIGNUM *p = NULL, *g = NULL;
+		BIGNUM *q = NULL, *priv_key = NULL;
+		BIGNUM *pub_key = BN_new();
+		BN_zero(pub_key);
+
+		p = BN_bin2bn((const unsigned char *)
+				xform->dsa.p.data,
+				xform->dsa.p.length,
+				p);
+
+		g = BN_bin2bn((const unsigned char *)
+				xform->dsa.g.data,
+				xform->dsa.g.length,
+				g);
+
+		q = BN_bin2bn((const unsigned char *)
+				xform->dsa.q.data,
+				xform->dsa.q.length,
+				q);
+		if (!p || !q || !g)
+			goto err_dsa;
+
+		priv_key = BN_bin2bn((const unsigned char *)
+				xform->dsa.x.data,
+				xform->dsa.x.length,
+				priv_key);
+		if (priv_key == NULL)
+			goto err_dsa;
+
+		DSA *dsa = DSA_new();
+		if (dsa == NULL) {
+			OPENSSL_LOG(ERR,
+				" failed to allocate resources\n");
+			goto err_dsa;
+		}
+
+		set_dsa_params(dsa, p, q, g, ret);
+		if (ret) {
+			DSA_free(dsa);
+			OPENSSL_LOG(ERR, "Failed to dsa params\n");
+			goto err_dsa;
+		}
+
+		/*
+		 * openssl 1.1.0 mandate that public key can't be
+		 * NULL in very first call. so set a dummy pub key.
+		 * to keep consistency, lets follow same approach for
+		 * both versions
+		 */
+		/* just set dummy public for very 1st call */
+		set_dsa_keys(dsa, pub_key, priv_key, ret);
+		if (ret) {
+			DSA_free(dsa);
+			OPENSSL_LOG(ERR, "Failed to set keys\n");
+			return -1;
+		}
+		asym_session->u.s.dsa = dsa;
+		asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_DSA;
+		break;
+
+err_dsa:
+		if (p)
+			BN_free(p);
+		if (q)
+			BN_free(q);
+		if (g)
+			BN_free(g);
+		if (priv_key)
+			BN_free(priv_key);
+		if (pub_key)
+			BN_free(pub_key);
+		return -1;
+	}
 	default:
 		return -1;
 	}
@@ -1021,6 +1205,14 @@ static void openssl_reset_asym_session(struct openssl_asym_session *sess)
 			BN_CTX_free(sess->u.m.ctx);
 		}
 		break;
+	case RTE_CRYPTO_ASYM_XFORM_DH:
+		if (sess->u.dh.dh_key)
+			DH_free(sess->u.dh.dh_key);
+		break;
+	case RTE_CRYPTO_ASYM_XFORM_DSA:
+		if (sess->u.s.dsa)
+			DSA_free(sess->u.s.dsa);
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/crypto/openssl/rte_openssl_pmd_private.h b/drivers/crypto/openssl/rte_openssl_pmd_private.h
index 0ebe596..a8f2c84 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd_private.h
+++ b/drivers/crypto/openssl/rte_openssl_pmd_private.h
@@ -9,6 +9,8 @@
 #include <openssl/hmac.h>
 #include <openssl/des.h>
 #include <openssl/rsa.h>
+#include <openssl/dh.h>
+#include <openssl/dsa.h>
 
 #define CRYPTODEV_NAME_OPENSSL_PMD	crypto_openssl
 /**< Open SSL Crypto PMD device name */
@@ -159,6 +161,13 @@ struct openssl_asym_session {
 			BIGNUM *modulus;
 			BN_CTX *ctx;
 		} m;
+		struct dh {
+			DH *dh_key;
+			uint32_t key_op;
+		} dh;
+		struct {
+			DSA *dsa;
+		} s;
 	} u;
 } __rte_cache_aligned;
 /** Set and validate OPENSSL crypto session parameters */
-- 
2.9.5

[PATCH v4 3/3] doc: add asym feature list

[Shally Verma]

From: Ashish Gupta <ashish.gupta@caviumnetworks.com>

Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
 doc/guides/cryptodevs/features/openssl.ini | 11 +++++++++++
 doc/guides/cryptodevs/openssl.rst          |  1 +
 2 files changed, 12 insertions(+)

diff --git a/doc/guides/cryptodevs/features/openssl.ini b/doc/guides/cryptodevs/features/openssl.ini
index 626ec1b..b9c0bdc 100644
--- a/doc/guides/cryptodevs/features/openssl.ini
+++ b/doc/guides/cryptodevs/features/openssl.ini
@@ -8,6 +8,7 @@ Symmetric crypto       = Y
 Sym operation chaining = Y
 OOP SGL In LB  Out     = Y
 OOP LB  In LB  Out     = Y
+Asymmetric crypto      = Y
 
 ;
 ; Supported crypto algorithms of the 'openssl' crypto driver.
@@ -50,3 +51,13 @@ AES GCM (256) = Y
 AES CCM (128) = Y
 AES CCM (192) = Y
 AES CCM (256) = Y
+
+;
+; Supported Asymmetric algorithms of the 'openssl' crypto driver.
+;
+[Asymmetric]
+RSA = Y
+DSA = Y
+Modular Exponentiation = Y
+Modular Inversion = Y
+Diffie-hellman = Y
diff --git a/doc/guides/cryptodevs/openssl.rst b/doc/guides/cryptodevs/openssl.rst
index 427fc80..bdc30f6 100644
--- a/doc/guides/cryptodevs/openssl.rst
+++ b/doc/guides/cryptodevs/openssl.rst
@@ -80,6 +80,7 @@ crypto processing.
 
 Test name is cryptodev_openssl_autotest.
 For performance test cryptodev_openssl_perftest can be used.
+For asymmetric crypto operations testing, run cryptodev_openssl_asym_autotest.
 
 To verify real traffic l2fwd-crypto example can be used with this command:
 
-- 
2.9.5

Re: [PATCH v4 1/3] crypto/openssl: add rsa and mod asym op

[De Lara Guarch, Pablo]

Hi Shally,

> -----Original Message-----
> From: Shally Verma [mailto:shally.verma@caviumnetworks.com]
> Sent: Thursday, July 12, 2018 3:09 PM
> To: De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>
> Cc: dev@dpdk.org; pathreya@caviumnetworks.com;
> nmurthy@caviumnetworks.com; Sunila Sahu
> <sunila.sahu@caviumnetworks.com>; Ashish Gupta
> <ashish.gupta@caviumnetworks.com>
> Subject: [PATCH v4 1/3] crypto/openssl: add rsa and mod asym op
> 
> From: Sunila Sahu <sunila.sahu@caviumnetworks.com>
> 
> - Add compat.h to make pmd compatible to openssl-1.1.0 and
>   backward version
> - Add rsa sign/verify/encrypt/decrypt and modular operation
>   support
> 
> Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
> Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
> Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>

...

> --- a/drivers/crypto/openssl/rte_openssl_pmd.c
> +++ b/drivers/crypto/openssl/rte_openssl_pmd.c

...

> +	case RTE_CRYPTO_ASYM_OP_VERIFY:
> +		ret = RSA_public_decrypt(op->rsa.sign.length,
> +				op->rsa.sign.data,
> +				op->rsa.sign.data,
> +				rsa,
> +				pad);
> +
> +		OPENSSL_LOG(DEBUG,
> +				"Length of public_decrypt %d "
> +				"length of message %zd\n",
> +				ret, op->rsa.message.length);
> +
> +		if (memcmp(op->rsa.sign.data, op->rsa.message.data,
> +					op->rsa.message.length)) {
> +			OPENSSL_LOG(ERR,
> +					"RSA sign Verification failed");
> +			return -1;
> +		}

There is a compilation issue here (missing "break"?):

drivers/crypto/openssl/rte_openssl_pmd.c:1905:6: error:
this statement may fall through [-Werror=implicit-fallthrough=]
   if (memcmp(op->rsa.sign.data, op->rsa.message.data,
      ^


> +	default:
> +		/* allow ops with invalid args to be pushed to
> +		 * completion queue
> +		 */
> +		cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
> +		break;
> +	}