cryptodev: add ChaCha20-Poly1305 AEAD algorithm

This patch adds Chacha20-Poly1305 AEAD algorithm to Cryptodev.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>

diff --git a/doc/guides/cryptodevs/features/default.ini b/doc/guides/cryptodevs/features/default.ini
index fb1ddca..133a246 100644 (file)
--- a/doc/guides/cryptodevs/features/default.ini
+++ b/doc/guides/cryptodevs/features/default.ini
@@ -96,12 +96,13 @@ SHA3_512 HMAC   =
 ; Supported AEAD algorithms of a default crypto driver.
 ;
 [AEAD]
-AES GCM (128) =
-AES GCM (192) =
-AES GCM (256) =
-AES CCM (128) =
-AES CCM (192) =
-AES CCM (256) =
+AES GCM (128)     =
+AES GCM (192)     =
+AES GCM (256)     =
+AES CCM (128)     =
+AES CCM (192)     =
+AES CCM (256)     =
+CHACHA20-POLY1305 =
 ;
 ; Supported Asymmetric algorithms of a default crypto driver.
 ;

diff --git a/doc/guides/rel_notes/release_20_05.rst b/doc/guides/rel_notes/release_20_05.rst
index ba91609..0fa39ea 100644 (file)
--- a/doc/guides/rel_notes/release_20_05.rst
+++ b/doc/guides/rel_notes/release_20_05.rst
@@ -145,6 +145,10 @@ New Features
   * Optimized the memory consumption of flow.
   * Added support for flow aging based on hardware counter.
 
+* **Added Chacha20-Poly1305 algorithm to Cryptodev API.**
+
+  Chacha20-Poly1305 AEAD algorithm can now be supported in Cryptodev.
+
 * **Updated the AESNI MB crypto PMD.**
 
   * Added support for intel-ipsec-mb version 0.54.

diff --git a/lib/librte_cryptodev/rte_crypto_sym.h b/lib/librte_cryptodev/rte_crypto_sym.h
index 9e887c1..d9585ec 100644 (file)
--- a/lib/librte_cryptodev/rte_crypto_sym.h
+++ b/lib/librte_cryptodev/rte_crypto_sym.h
@@ -409,6 +409,8 @@ enum rte_crypto_aead_algorithm {
        /**< AES algorithm in CCM mode. */
        RTE_CRYPTO_AEAD_AES_GCM,
        /**< AES algorithm in GCM mode. */
+       RTE_CRYPTO_AEAD_CHACHA20_POLY1305,
+       /**< Chacha20 cipher with poly1305 authenticator */
        RTE_CRYPTO_AEAD_LIST_END
 };
 
@@ -452,6 +454,11 @@ struct rte_crypto_aead_xform {
                 * be allocated, even though the length field will
                 * have a value less than this.
                 *
+                * - For Chacha20-Poly1305 it is 96-bit nonce.
+                * PMD sets initial counter for Poly1305 key generation
+                * part to 0 and for Chacha20 encryption to 1 as per
+                * rfc8439 2.8. AEAD construction.
+                *
                 * For optimum performance, the data pointed to SHOULD
                 * be 8-byte aligned.
                 */
@@ -468,6 +475,8 @@ struct rte_crypto_aead_xform {
                 *
                 * - For CCM mode, this is the length of the nonce,
                 * which can be in the range 7 to 13 inclusive.
+                *
+                * - For Chacha20-Poly1305 this field is always 12.
                 */
        } iv;   /**< Initialisation vector parameters */
 

diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index f30e3cb..2ce606a 100644 (file)
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -152,6 +152,7 @@ const char *
 rte_crypto_aead_algorithm_strings[] = {
        [RTE_CRYPTO_AEAD_AES_CCM]       = "aes-ccm",
        [RTE_CRYPTO_AEAD_AES_GCM]       = "aes-gcm",
+       [RTE_CRYPTO_AEAD_CHACHA20_POLY1305] = "chacha20-poly1305"
 };
 
 /**