Import Mbed OS hard-float snapshot

connectivity/drivers/mbedtls/TARGET_STM/gcm_alt.h

@@ -0,0 +1,76 @@
+/**
+ * \file gcm_alt.h.h
+ *
+ * \brief This file contains GCM definitions and functions.
+ *
+ * The Galois/Counter Mode (GCM) for 128-bit block ciphers is defined
+ * in <em>D. McGrew, J. Viega, The Galois/Counter Mode of Operation
+ * (GCM), Natl. Inst. Stand. Technol.</em>
+ *
+ * For more information on GCM, see <em>NIST SP 800-38D: Recommendation for
+ * Block Cipher Modes of Operation: Galois/Counter Mode (GCM) and GMAC</em>.
+ *
+ */
+/*
+ *  Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
+ *  Copyright (C) 2019-2020 STMicroelectronics, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file implements ST GCM HW services based on API from mbed TLS
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef MBEDTLS_GCM_ALT_H
+#define MBEDTLS_GCM_ALT_H
+
+#if defined(MBEDTLS_GCM_ALT)
+/* Includes ------------------------------------------------------------------*/
+#include "cryp_stm32.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/**
+ * \brief          AES context structure
+ *
+ */
+typedef struct mbedtls_gcm_context {
+    /* Encryption/Decryption key */
+    uint32_t gcm_key[8];
+
+    CRYP_HandleTypeDef hcryp_gcm;      /* HW driver handle                    */
+    uint32_t ctx_save_cr;              /* save context for multi-context  */
+    uint64_t len;                      /* total length of the encrypted data. */
+    int mode;                          /* The operation to perform:
+                                               #MBEDTLS_GCM_ENCRYPT or
+                                               #MBEDTLS_GCM_DECRYPT.          */
+}
+mbedtls_gcm_context;
+
+/* Exported constants --------------------------------------------------------*/
+/* Uncomment if ADD (Additional Authentication Data) may have not a length    */
+/* over a multiple of 32 bits  (Hw implementation dependance)                 */
+//#define STM32_AAD_ANY_LENGTH_SUPPORT
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MBEDTLS_GCM_ALT */
+#endif /* MBEDTLS_GCM_ALT_H */