From: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Date: Wed, 1 Jun 2022 09:02:41 +0000 (+0100)
Subject: cryptodev: clarify usage of private key in DH
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9e3ad30b789e75afff0c2628fa0c666649dd9268;p=dpdk.git

cryptodev: clarify usage of private key in DH

- Clarified usage of private key in Diffie-Hellman.
CSRNG capable device should generate private key and then
use it for public key generation.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
---

diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index 88ebec9a51..ecf4e376b5 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -416,6 +416,11 @@ struct rte_crypto_dh_op_param {
 	 * Input - private key, when dh xform ke_type is one of:
 	 * RTE_CRYPTO_ASYM_KE_PUB_KEY_GENERATE,
 	 * RTE_CRYPTO_ASYM_KE_SHARED_SECRET_COMPUTE.
+	 *
+	 * In case priv_key.length is 0 and xform type is set with
+	 * RTE_CRYPTO_ASYM_KE_PUB_KEY_GENERATE, CSRNG capable
+	 * device will generate a private key and use it for public
+	 * key generation.
 	 */
 
 	rte_crypto_uint shared_secret;