[PATCH 29/40] cryptodev: add salt length and optional label

[Arek Kusztal]

- added salt length and optional label.
Common parameters to PSS and OAEP padding for RSA.
- Fixed hash API in RSA padding.
Now it is specified how hash should be used with
particular RSA padding modes.

Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
---
 lib/cryptodev/rte_crypto_asym.h | 44 +++++++++++++++++++++++++++++++++++------
 1 file changed, 38 insertions(+), 6 deletions(-)

diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index 97c3fbee38..c864b8a115 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -205,12 +205,29 @@ struct rte_crypto_rsa_priv_key_qt {
  */
 struct rte_crypto_rsa_padding {
        enum rte_crypto_rsa_padding_type type;
-       /**< RSA padding scheme to be used for transform */
-       enum rte_crypto_auth_algorithm md;
-       /**< Hash algorithm to be used for data hash if padding
-        * scheme is either OAEP or PSS. Valid hash algorithms
-        * are:
-        * MD5, SHA1, SHA224, SHA256, SHA384, SHA512
+       /**< Type of RSA padding */
+       enum rte_crypto_auth_algorithm hash;
+       /**<
+        * RSA padding hash function
+        *
+        * When a specific padding type is selected, the following rule apply:
+        * - RTE_CRYPTO_RSA_PADDING_NONE:
+        * This field is ignored by the PMD
+        *
+        * - RTE_CRYPTO_RSA_PADDING_PKCS1_5:
+        * When signing operation this field is used to determine value
+        * of the DigestInfo structure, therefore specifying which algorithm
+        * was used to create the message digest.
+        * When doing encryption/decryption this field is ignored for this
+        * padding type.
+        *
+        * - RTE_CRYPTO_RSA_PADDING_OAEP
+        * This field shall be set with the hash algorithm used
+        * in the padding scheme
+        *
+        * - RTE_CRYPTO_RSA_PADDING_PSS
+        * This field shall be set with the hash algorithm used
+        * in the padding scheme (and to create the input message digest)
         */
        enum rte_crypto_auth_algorithm mgf1md;
        /**<
@@ -220,6 +237,21 @@ struct rte_crypto_rsa_padding {
         * for mask generation. Valid hash algorithms are:
         * MD5, SHA1, SHA224, SHA256, SHA384, SHA512
         */
+       uint16_t saltlen;
+       /**<
+        * RSA PSS padding salt length
+        *
+        * Used only when RTE_CRYPTO_RSA_PADDING_PSS padding is selected,
+        * otherwise ignored.
+        */
+       rte_crypto_param label;
+       /**<
+        * RSA OAEP padding optional label
+        *
+        * Used only when RTE_CRYPTO_RSA_PADDING_OAEP padding is selected,
+        * otherwise ignored. If label.data == NULL, a default
+        * label (empty string) is used.
+        */
 };
 
 /**
-- 
2.13.6