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+/**
+ * \file pkcs5.h
+ *
+ * \brief PKCS#5 functions
+ *
+ * \author Mathias Olsson <mathias@kompetensum.com>
+ */
+/*
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: GPL-2.0
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+#ifndef MBEDTLS_PKCS5_H
+#define MBEDTLS_PKCS5_H
+
+#include "asn1.h"
+#include "md.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA                  -0x2f80  /**< Bad input parameters to function. */
+#define MBEDTLS_ERR_PKCS5_INVALID_FORMAT                  -0x2f00  /**< Unexpected ASN.1 data. */
+#define MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE             -0x2e80  /**< Requested encryption or digest alg not available. */
+#define MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH               -0x2e00  /**< Given private key password does not allow for correct decryption. */
+
+#define MBEDTLS_PKCS5_DECRYPT      0
+#define MBEDTLS_PKCS5_ENCRYPT      1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          PKCS#5 PBES2 function
+ *
+ * \param pbe_params the ASN.1 algorithm parameters
+ * \param mode       either MBEDTLS_PKCS5_DECRYPT or MBEDTLS_PKCS5_ENCRYPT
+ * \param pwd        password to use when generating key
+ * \param pwdlen     length of password
+ * \param data       data to process
+ * \param datalen    length of data
+ * \param output     output buffer
+ *
+ * \returns        0 on success, or a MBEDTLS_ERR_XXX code if verification fails.
+ */
+int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode,
+                 const unsigned char *pwd,  size_t pwdlen,
+                 const unsigned char *data, size_t datalen,
+                 unsigned char *output );
+
+/**
+ * \brief          PKCS#5 PBKDF2 using HMAC
+ *
+ * \param ctx      Generic HMAC context
+ * \param password Password to use when generating key
+ * \param plen     Length of password
+ * \param salt     Salt to use when generating key
+ * \param slen     Length of salt
+ * \param iteration_count       Iteration count
+ * \param key_length            Length of generated key in bytes
+ * \param output   Generated key. Must be at least as big as key_length
+ *
+ * \returns        0 on success, or a MBEDTLS_ERR_XXX code if verification fails.
+ */
+int mbedtls_pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx, const unsigned char *password,
+                       size_t plen, const unsigned char *salt, size_t slen,
+                       unsigned int iteration_count,
+                       uint32_t key_length, unsigned char *output );
+
+/**
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int mbedtls_pkcs5_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* pkcs5.h */