[PATCH v4 07/12] cryptodev: add public key verify option

[Arek Kusztal]

- Added key exchange public key verify option.
For some elliptic curves public point in DH exchange
needs to be checked, if it lays on the curve.
Modular exponentiation needs certain checks as well, though
mathematically much easier.
This commit adds verify option to asym_op operations.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal at intel.com>
---
 lib/cryptodev/rte_crypto_asym.h | 11 ++++++++---
 lib/cryptodev/rte_cryptodev.c   |  3 ++-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index f61a2ddce8..ae3ca31a89 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -130,8 +130,12 @@ enum rte_crypto_asym_ke_type {
 	/**< Private Key generation operation */
 	RTE_CRYPTO_ASYM_KE_PUB_KEY_GENERATE,
 	/**< Public Key generation operation */
-	RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE
+	RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE,
 	/**< Shared Secret compute operation */
+	RTE_CRYPTO_ASYM_KE_PUB_KEY_VERIFY
+	/**< Public Key Verification - can be used for
+	 * elliptic curve point validation.
+	 */
 };
 
 /**
@@ -455,8 +459,9 @@ struct rte_crypto_ecdh_op_param {
 	 * Output - generated public key when ke_type is
 	 * RTE_CRYPTO_ASYM_KE_PUBLIC_KEY_GENERATE.
 	 *
-	 * Input - peer's public key when ke_type is
-	 * RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE.
+	 * Input - peer's public key, when ke_type is one of:
+	 * RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE,
+	 * RTE_CRYPTO_ASYM_KE_EC_PUBLIC_KEY_VERIFY.
 	 */
 	struct rte_crypto_ec_point shared_secret;
 	/**<
diff --git a/lib/cryptodev/rte_cryptodev.c b/lib/cryptodev/rte_cryptodev.c
index cc614b0f72..42f3221052 100644
--- a/lib/cryptodev/rte_cryptodev.c
+++ b/lib/cryptodev/rte_cryptodev.c
@@ -186,7 +186,8 @@ const char *rte_crypto_asym_op_strings[] = {
 const char *rte_crypto_asym_ke_strings[] = {
 	[RTE_CRYPTO_ASYM_KE_PRIV_KEY_GENERATE] = "priv_key_generate",
 	[RTE_CRYPTO_ASYM_KE_PUB_KEY_GENERATE] = "pub_key_generate",
-	[RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE] = "sharedsecret_compute"
+	[RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE] = "sharedsecret_compute",
+	[RTE_CRYPTO_ASYM_KE_PUB_KEY_VERIFY] = "pub_ec_key_verify"
 };
 
 /**
-- 
2.13.6