[PATCH v2 1/6] cryptodev: add EDDSA asymmetric crypto algorithm

[Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>]

Add support for asymmetric EDDSA in cryptodev, as referenced in RFC:
https://datatracker.ietf.org/doc/html/rfc8032

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
---
 doc/guides/cryptodevs/features/default.ini |  1 +
 doc/guides/prog_guide/cryptodev_lib.rst    |  2 +-
 lib/cryptodev/rte_crypto_asym.h            | 47 ++++++++++++++++++++++
 3 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/doc/guides/cryptodevs/features/default.ini b/doc/guides/cryptodevs/features/default.ini
index f411d4bab7..3073753911 100644
--- a/doc/guides/cryptodevs/features/default.ini
+++ b/doc/guides/cryptodevs/features/default.ini
@@ -130,6 +130,7 @@ ECDSA                   =
 ECPM                    =
 ECDH                    =
 SM2                     =
+EDDSA                   =
 
 ;
 ; Supported Operating systems of a default crypto driver.
diff --git a/doc/guides/prog_guide/cryptodev_lib.rst b/doc/guides/prog_guide/cryptodev_lib.rst
index 2b513bbf82..dd636ba5ef 100644
--- a/doc/guides/prog_guide/cryptodev_lib.rst
+++ b/doc/guides/prog_guide/cryptodev_lib.rst
@@ -927,7 +927,7 @@ Asymmetric Cryptography
 The cryptodev library currently provides support for the following asymmetric
 Crypto operations; RSA, Modular exponentiation and inversion, Diffie-Hellman and
 Elliptic Curve Diffie-Hellman public and/or private key generation and shared
-secret compute, DSA Signature generation and verification.
+secret compute, DSA and EdDSA Signature generation and verification.
 
 Session and Session Management
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index 39d3da3952..11bb885d64 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -49,6 +49,10 @@ rte_crypto_asym_op_strings[];
  * and if the flag is not set, shared secret will be padded to the left with
  * zeros to the size of the underlying algorithm (default)
  */
+#define RTE_CRYPTO_ASYM_FLAG_PUB_KEY_COMPRESSED		RTE_BIT32(2)
+/**<
+ * Flag to denote public key will be returned in compressed form
+ */
 
 /**
  * List of elliptic curves. This enum aligns with
@@ -65,9 +69,22 @@ enum rte_crypto_curve_id {
 	RTE_CRYPTO_EC_GROUP_SECP256R1 = 23,
 	RTE_CRYPTO_EC_GROUP_SECP384R1 = 24,
 	RTE_CRYPTO_EC_GROUP_SECP521R1 = 25,
+	RTE_CRYPTO_EC_GROUP_ED25519   = 29,
+	RTE_CRYPTO_EC_GROUP_ED448     = 30,
 	RTE_CRYPTO_EC_GROUP_SM2       = 41,
 };
 
+/**
+ * List of Edwards curve instances as per RFC 8032 (Section 5).
+ */
+enum rte_crypto_edward_instance {
+	RTE_CRYPTO_EDCURVE_25519,
+	RTE_CRYPTO_EDCURVE_25519CTX,
+	RTE_CRYPTO_EDCURVE_25519PH,
+	RTE_CRYPTO_EDCURVE_448,
+	RTE_CRYPTO_EDCURVE_448PH
+};
+
 /**
  * Asymmetric crypto transformation types.
  * Each xform type maps to one asymmetric algorithm
@@ -119,6 +136,10 @@ enum rte_crypto_asym_xform_type {
 	 * Performs Encrypt, Decrypt, Sign and Verify.
 	 * Refer to rte_crypto_asym_op_type.
 	 */
+	RTE_CRYPTO_ASYM_XFORM_EDDSA,
+	/**< Edwards Curve Digital Signature Algorithm
+	 * Perform Signature Generation and Verification.
+	 */
 	RTE_CRYPTO_ASYM_XFORM_TYPE_LIST_END
 	/**< End of list */
 };
@@ -585,6 +606,31 @@ struct rte_crypto_ecdsa_op_param {
 	 */
 };
 
+/**
+ * EDDSA operation params
+ */
+struct rte_crypto_eddsa_op_param {
+	enum rte_crypto_asym_op_type op_type;
+	/**< Signature generation or verification */
+
+	rte_crypto_param message;
+	/**< Input message digest to be signed or verified */
+
+	rte_crypto_param context;
+	/**< Context value for the sign op.
+	 *   Must not be empty for Ed25519ctx instance.
+	 */
+
+	enum rte_crypto_edward_instance instance;
+	/**< Type of Edwards curve. */
+
+	rte_crypto_uint sign;
+	/**< Edward curve signature
+	 *     output : for signature generation
+	 *     input  : for signature verification
+	 */
+};
+
 /**
  * Structure for EC point multiplication operation param
  */
@@ -720,6 +766,7 @@ struct rte_crypto_asym_op {
 		struct rte_crypto_ecdsa_op_param ecdsa;
 		struct rte_crypto_ecpm_op_param ecpm;
 		struct rte_crypto_sm2_op_param sm2;
+		struct rte_crypto_eddsa_op_param eddsa;
 	};
 	uint16_t flags;
 	/**<
-- 
2.21.0