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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/sha256.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/sha256.h
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+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/sha256.h
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+/**
+ * \file sha256.h
+ *
+ * \brief SHA-224 and SHA-256 cryptographic hash function
+ *
+ * Copyright (C) 2006-2015, ARM Limited, 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 is part of mbed TLS (https://tls.mbed.org)
+ */
+#ifndef MBEDTLS_SHA256_H
+#define MBEDTLS_SHA256_H
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+
+#if !defined(MBEDTLS_SHA256_ALT)
+// Regular implementation
+//
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief SHA-256 context structure
+ */
+typedef struct
+{
+ uint32_t total[2]; /*!< number of bytes processed */
+ uint32_t state[8]; /*!< intermediate digest state */
+ unsigned char buffer[64]; /*!< data block being processed */
+ int is224; /*!< 0 => SHA-256, else SHA-224 */
+}
+mbedtls_sha256_context;
+
+/**
+ * \brief Initialize SHA-256 context
+ *
+ * \param ctx SHA-256 context to be initialized
+ */
+void mbedtls_sha256_init( mbedtls_sha256_context *ctx );
+
+/**
+ * \brief Clear SHA-256 context
+ *
+ * \param ctx SHA-256 context to be cleared
+ */
+void mbedtls_sha256_free( mbedtls_sha256_context *ctx );
+
+/**
+ * \brief Clone (the state of) a SHA-256 context
+ *
+ * \param dst The destination context
+ * \param src The context to be cloned
+ */
+void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
+ const mbedtls_sha256_context *src );
+
+/**
+ * \brief SHA-256 context setup
+ *
+ * \param ctx context to be initialized
+ * \param is224 0 = use SHA256, 1 = use SHA224
+ */
+void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, int is224 );
+
+/**
+ * \brief SHA-256 process buffer
+ *
+ * \param ctx SHA-256 context
+ * \param input buffer holding the data
+ * \param ilen length of the input data
+ */
+void mbedtls_sha256_update( mbedtls_sha256_context *ctx, const unsigned char *input,
+ size_t ilen );
+
+/**
+ * \brief SHA-256 final digest
+ *
+ * \param ctx SHA-256 context
+ * \param output SHA-224/256 checksum result
+ */
+void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, unsigned char output[32] );
+
+/* Internal use */
+void mbedtls_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] );
+
+#ifdef __cplusplus
+}
+#endif
+
+#else /* MBEDTLS_SHA256_ALT */
+#include "sha256_alt.h"
+#endif /* MBEDTLS_SHA256_ALT */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Output = SHA-256( input buffer )
+ *
+ * \param input buffer holding the data
+ * \param ilen length of the input data
+ * \param output SHA-224/256 checksum result
+ * \param is224 0 = use SHA256, 1 = use SHA224
+ */
+void mbedtls_sha256( const unsigned char *input, size_t ilen,
+ unsigned char output[32], int is224 );
+
+/**
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ */
+int mbedtls_sha256_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* mbedtls_sha256.h */