Import Mbed OS hard-float snapshot

connectivity/drivers/mbedtls/TARGET_STM/md5_alt.h

@@ -0,0 +1,63 @@
+/**
+ * \file md5.h
+ *
+ * \brief MD5 message digest algorithm (hash function)
+ *
+ * \warning   MD5 is considered a weak message digest and its use constitutes a
+ *            security risk. We recommend considering stronger message
+ *            digests instead.
+ */
+/*
+ *  Copyright (C) 2006-2015, ARM Limited, 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 STMicroelectronics MD5 API with HW services based
+ *  on mbed TLS API
+ */
+
+#ifndef MBEDTLS_MD5_ALT_H
+#define MBEDTLS_MD5_ALT_H
+
+#if defined (MBEDTLS_MD5_ALT)
+/* Includes ------------------------------------------------------------------*/
+#include "hash_stm32.h"
+
+#ifndef MBEDTLS_ERR_MD5_BAD_INPUT_DATA
+#define MBEDTLS_ERR_MD5_BAD_INPUT_DATA                     -0x00AF
+#endif
+
+#define ST_MD5_BLOCK_SIZE  ((size_t)  64)           /*!< HW handles 512 bits, ie 64 bytes */
+#define ST_MD5_NB_HASH_REG ((uint32_t)57)           /*!< Number of HASH HW context Registers:
+                                                         CR + STR + IMR + CSR[54] */
+
+/**
+ * \brief          MD5 context structure
+ *
+ * STMicroelectronics edition
+ */
+typedef struct mbedtls_md5_context {
+    HASH_HandleTypeDef hhash;                       /*!< Handle of HASH HAL */
+    uint8_t sbuf[ST_MD5_BLOCK_SIZE];                /*!< Buffer to store input data until ST_MD5_BLOCK_SIZE
+                                                         is reached, or until last input data is reached */
+    uint8_t sbuf_len;                               /*!< Number of bytes stored in sbuf */
+    uint32_t ctx_save_regs[ST_MD5_NB_HASH_REG];
+}
+mbedtls_md5_context;
+
+
+#endif /* MBEDTLS_MD5_ALT */
+
+#endif /* MBEDTLS_MD5_ALT_H */