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diff --git a/cpukit/doxygen/hash-algorithms.h b/cpukit/doxygen/hash-algorithms.h
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+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplDoxygen
+ *
+ * @brief This header file contains Doxygen items related to hash algorithms.
+ */
+
+/*
+ * Copyright (C) 2023 embedded brains GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @defgroup RTEMSAPIHashAlgorithms Hash Algorithms
+ *
+ * @ingroup RTEMSAPI
+ *
+ * @brief This group contains interfaces to hash algorithms.
+ */
+
+/**
+ * @file cpukit/include/md4.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the HD4 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/md5.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the HD5 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/sha224.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the SHA224 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/sha256.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the SHA256 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/sha384.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the SHA384 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/sha512.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the SHA512 hash algorithm
+ *   support.
+ */
+
+/**
+ * @file cpukit/include/sha512t.h
+ *
+ * @ingroup RTEMSAPIHashAlgorithms
+ *
+ * @brief This header file contains interfaces of the trucated SHA512 hash
+ *   algorithm support.
+ */
+
+
+/**
+ * @defgroup RTEMSImplHashAlgorithms Hash Algorithms
+ *
+ * @ingroup RTEMSImpl
+ *
+ * @brief This group contains items related to the implementation of hash
+ *   algorithms.
+ */
+
+/**
+ * @file cpukit/libmd/md4.c
+ *
+ * @ingroup RTEMSImplHashAlgorithms
+ *
+ * @brief This source file contains the implemention of the MD4 hash algorithm.
+ */
+
+/**
+ * @file cpukit/libmd/md5.c
+ *
+ * @ingroup RTEMSImplHashAlgorithms
+ *
+ * @brief This source file contains the implemention of the MD5 hash algorithm.
+ */
+
+/**
+ * @file cpukit/libmd/sha256c.c
+ *
+ * @ingroup RTEMSImplHashAlgorithms
+ *
+ * @brief This source file contains the implemention of the SHA256 hash
+ *   algorithm and variants.
+ */
+
+/**
+ * @file cpukit/libmd/sha512c.c
+ *
+ * @ingroup RTEMSImplHashAlgorithms
+ *
+ * @brief This source file contains the implemention of the SHA512 hash
+ *   algorithm and variants.
+ */