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diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
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+/**
+ * \file sha512.h
+ * \brief This file contains SHA-384 and SHA-512 definitions and functions.
+ *
+ * The Secure Hash Algorithms 384 and 512 (SHA-384 and SHA-512) cryptographic
+ * hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+#ifndef MBEDTLS_SHA512_H
+#define MBEDTLS_SHA512_H
+#include "mbedtls/private_access.h"
+
+#include "mbedtls/build_info.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+/** SHA-512 input data was malformed. */
+#define MBEDTLS_ERR_SHA512_BAD_INPUT_DATA                 -0x0075
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(MBEDTLS_SHA512_ALT)
+// Regular implementation
+//
+
+/**
+ * \brief          The SHA-512 context structure.
+ *
+ *                 The structure is used both for SHA-384 and for SHA-512
+ *                 checksum calculations. The choice between these two is
+ *                 made in the call to mbedtls_sha512_starts().
+ */
+typedef struct mbedtls_sha512_context {
+    uint64_t MBEDTLS_PRIVATE(total)[2];          /*!< The number of Bytes processed. */
+    uint64_t MBEDTLS_PRIVATE(state)[8];          /*!< The intermediate digest state. */
+    unsigned char MBEDTLS_PRIVATE(buffer)[128];  /*!< The data block being processed. */
+#if defined(MBEDTLS_SHA384_C)
+    int MBEDTLS_PRIVATE(is384);                  /*!< Determines which function to use:
+                                                      0: Use SHA-512, or 1: Use SHA-384. */
+#endif
+}
+mbedtls_sha512_context;
+
+#else  /* MBEDTLS_SHA512_ALT */
+#include "sha512_alt.h"
+#endif /* MBEDTLS_SHA512_ALT */
+
+/**
+ * \brief          This function initializes a SHA-512 context.
+ *
+ * \param ctx      The SHA-512 context to initialize. This must
+ *                 not be \c NULL.
+ */
+void mbedtls_sha512_init(mbedtls_sha512_context *ctx);
+
+/**
+ * \brief          This function clears a SHA-512 context.
+ *
+ * \param ctx      The SHA-512 context to clear. This may be \c NULL,
+ *                 in which case this function does nothing. If it
+ *                 is not \c NULL, it must point to an initialized
+ *                 SHA-512 context.
+ */
+void mbedtls_sha512_free(mbedtls_sha512_context *ctx);
+
+/**
+ * \brief          This function clones the state of a SHA-512 context.
+ *
+ * \param dst      The destination context. This must be initialized.
+ * \param src      The context to clone. This must be initialized.
+ */
+void mbedtls_sha512_clone(mbedtls_sha512_context *dst,
+                          const mbedtls_sha512_context *src);
+
+/**
+ * \brief          This function starts a SHA-384 or SHA-512 checksum
+ *                 calculation.
+ *
+ * \param ctx      The SHA-512 context to use. This must be initialized.
+ * \param is384    Determines which function to use. This must be
+ *                 either \c 0 for SHA-512, or \c 1 for SHA-384.
+ *
+ * \note           is384 must be defined accordingly to the enabled
+ *                 MBEDTLS_SHA384_C/MBEDTLS_SHA512_C symbols otherwise the
+ *                 function will return #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
+ *
+ * \return         \c 0 on success.
+ * \return         A negative error code on failure.
+ */
+int mbedtls_sha512_starts(mbedtls_sha512_context *ctx, int is384);
+
+/**
+ * \brief          This function feeds an input buffer into an ongoing
+ *                 SHA-512 checksum calculation.
+ *
+ * \param ctx      The SHA-512 context. This must be initialized
+ *                 and have a hash operation started.
+ * \param input    The buffer holding the input data. This must
+ *                 be a readable buffer of length \p ilen Bytes.
+ * \param ilen     The length of the input data in Bytes.
+ *
+ * \return         \c 0 on success.
+ * \return         A negative error code on failure.
+ */
+int mbedtls_sha512_update(mbedtls_sha512_context *ctx,
+                          const unsigned char *input,
+                          size_t ilen);
+
+/**
+ * \brief          This function finishes the SHA-512 operation, and writes
+ *                 the result to the output buffer.
+ *
+ * \param ctx      The SHA-512 context. This must be initialized
+ *                 and have a hash operation started.
+ * \param output   The SHA-384 or SHA-512 checksum result.
+ *                 This must be a writable buffer of length \c 64 bytes
+ *                 for SHA-512, \c 48 bytes for SHA-384.
+ *
+ * \return         \c 0 on success.
+ * \return         A negative error code on failure.
+ */
+int mbedtls_sha512_finish(mbedtls_sha512_context *ctx,
+                          unsigned char *output);
+
+/**
+ * \brief          This function processes a single data block within
+ *                 the ongoing SHA-512 computation.
+ *                 This function is for internal use only.
+ *
+ * \param ctx      The SHA-512 context. This must be initialized.
+ * \param data     The buffer holding one block of data. This
+ *                 must be a readable buffer of length \c 128 Bytes.
+ *
+ * \return         \c 0 on success.
+ * \return         A negative error code on failure.
+ */
+int mbedtls_internal_sha512_process(mbedtls_sha512_context *ctx,
+                                    const unsigned char data[128]);
+
+/**
+ * \brief          This function calculates the SHA-512 or SHA-384
+ *                 checksum of a buffer.
+ *
+ *                 The function allocates the context, performs the
+ *                 calculation, and frees the context.
+ *
+ *                 The SHA-512 result is calculated as
+ *                 output = SHA-512(input buffer).
+ *
+ * \param input    The buffer holding the input data. This must be
+ *                 a readable buffer of length \p ilen Bytes.
+ * \param ilen     The length of the input data in Bytes.
+ * \param output   The SHA-384 or SHA-512 checksum result.
+ *                 This must be a writable buffer of length \c 64 bytes
+ *                 for SHA-512, \c 48 bytes for SHA-384.
+ * \param is384    Determines which function to use. This must be either
+ *                 \c 0 for SHA-512, or \c 1 for SHA-384.
+ *
+ * \note           is384 must be defined accordingly with the supported
+ *                 symbols in the config file. If:
+ *                 - is384 is 0, but \c MBEDTLS_SHA384_C is not defined, or
+ *                 - is384 is 1, but \c MBEDTLS_SHA512_C is not defined
+ *                 then the function will return
+ *                 #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
+ *
+ * \return         \c 0 on success.
+ * \return         A negative error code on failure.
+ */
+int mbedtls_sha512(const unsigned char *input,
+                   size_t ilen,
+                   unsigned char *output,
+                   int is384);
+
+#if defined(MBEDTLS_SELF_TEST)
+
+#if defined(MBEDTLS_SHA384_C)
+/**
+ * \brief          The SHA-384 checkup routine.
+ *
+ * \return         \c 0 on success.
+ * \return         \c 1 on failure.
+ */
+int mbedtls_sha384_self_test(int verbose);
+#endif /* MBEDTLS_SHA384_C */
+
+#if defined(MBEDTLS_SHA512_C)
+/**
+ * \brief          The SHA-512 checkup routine.
+ *
+ * \return         \c 0 on success.
+ * \return         \c 1 on failure.
+ */
+int mbedtls_sha512_self_test(int verbose);
+#endif /* MBEDTLS_SHA512_C */
+
+#endif /* MBEDTLS_SELF_TEST */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* mbedtls_sha512.h */