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+/**
+ * \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 The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+#ifndef MBEDTLS_MD5_H
+#define MBEDTLS_MD5_H
+#include "mbedtls/private_access.h"
+
+#include "mbedtls/build_info.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(MBEDTLS_MD5_ALT)
+// Regular implementation
+//
+
+/**
+ * \brief MD5 context structure
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+typedef struct mbedtls_md5_context {
+ uint32_t MBEDTLS_PRIVATE(total)[2]; /*!< number of bytes processed */
+ uint32_t MBEDTLS_PRIVATE(state)[4]; /*!< intermediate digest state */
+ unsigned char MBEDTLS_PRIVATE(buffer)[64]; /*!< data block being processed */
+}
+mbedtls_md5_context;
+
+#else /* MBEDTLS_MD5_ALT */
+#include "md5_alt.h"
+#endif /* MBEDTLS_MD5_ALT */
+
+/**
+ * \brief Initialize MD5 context
+ *
+ * \param ctx MD5 context to be initialized
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+void mbedtls_md5_init(mbedtls_md5_context *ctx);
+
+/**
+ * \brief Clear MD5 context
+ *
+ * \param ctx MD5 context to be cleared
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+void mbedtls_md5_free(mbedtls_md5_context *ctx);
+
+/**
+ * \brief Clone (the state of) an MD5 context
+ *
+ * \param dst The destination context
+ * \param src The context to be cloned
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+void mbedtls_md5_clone(mbedtls_md5_context *dst,
+ const mbedtls_md5_context *src);
+
+/**
+ * \brief MD5 context setup
+ *
+ * \param ctx context to be initialized
+ *
+ * \return 0 if successful
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_md5_starts(mbedtls_md5_context *ctx);
+
+/**
+ * \brief MD5 process buffer
+ *
+ * \param ctx MD5 context
+ * \param input buffer holding the data
+ * \param ilen length of the input data
+ *
+ * \return 0 if successful
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_md5_update(mbedtls_md5_context *ctx,
+ const unsigned char *input,
+ size_t ilen);
+
+/**
+ * \brief MD5 final digest
+ *
+ * \param ctx MD5 context
+ * \param output MD5 checksum result
+ *
+ * \return 0 if successful
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_md5_finish(mbedtls_md5_context *ctx,
+ unsigned char output[16]);
+
+/**
+ * \brief MD5 process data block (internal use only)
+ *
+ * \param ctx MD5 context
+ * \param data buffer holding one block of data
+ *
+ * \return 0 if successful
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_internal_md5_process(mbedtls_md5_context *ctx,
+ const unsigned char data[64]);
+
+/**
+ * \brief Output = MD5( input buffer )
+ *
+ * \param input buffer holding the data
+ * \param ilen length of the input data
+ * \param output MD5 checksum result
+ *
+ * \return 0 if successful
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_md5(const unsigned char *input,
+ size_t ilen,
+ unsigned char output[16]);
+
+#if defined(MBEDTLS_SELF_TEST)
+
+/**
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ *
+ * \warning MD5 is considered a weak message digest and its use
+ * constitutes a security risk. We recommend considering
+ * stronger message digests instead.
+ *
+ */
+int mbedtls_md5_self_test(int verbose);
+
+#endif /* MBEDTLS_SELF_TEST */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* mbedtls_md5.h */