[dpdk-dev] [PATCH v4 09/11] cryptodev: add RSA padding none description

[Arek Kusztal <arkadiuszx.kusztal@intel.com>]

This patch adds RSA padding none description.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 lib/librte_cryptodev/rte_crypto_asym.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/librte_cryptodev/rte_crypto_asym.h b/lib/librte_cryptodev/rte_crypto_asym.h
index 5e05de5..a021c5b 100644
--- a/lib/librte_cryptodev/rte_crypto_asym.h
+++ b/lib/librte_cryptodev/rte_crypto_asym.h
@@ -90,7 +90,10 @@ enum rte_crypto_asym_xform_type {
  */
 enum rte_crypto_asym_op_type {
 	RTE_CRYPTO_ASYM_OP_ENCRYPT,
-	/**< Asymmetric Encrypt operation */
+	/**< RSA no padding scheme.
+	 * In this case user is responsible for provision and verification
+	 * of padding.
+	 */
 	RTE_CRYPTO_ASYM_OP_DECRYPT,
 	/**< Asymmetric Decrypt operation */
 	RTE_CRYPTO_ASYM_OP_SIGN,
@@ -409,6 +412,11 @@ struct rte_crypto_rsa_op_param {
 	 * - padding PSS
 	 * data provided should contain message digest of the message
 	 * to be signed
+	 *
+	 * When padding field is set to RTE_CRYPTO_RSA_PADDING_NONE
+	 * and RTE_CRYPTO_ASYM_OP_DECRYPT op_type used returned data size
+	 * will be equal to the size of RSA key in bytes. All leading
+	 * zeroes will be preserved.
 	 */
 
 	rte_crypto_param cipher;
-- 
2.1.0