src/libstrongswan/crypto/xofs/mgf1.h

   1 /*
   2  * Copyright (C) 2016 Andreas Steffen
   3  * HSR Hochschule fuer Technik Rapperswil
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 /**
  17  * @defgroup mgf1 mgf1
  18  * @{ @ingroup crypto
  19  */
  20
  21 #ifndef MGF1_H_
  22 #define MGF1_H_
  23
  24 typedef struct mgf1_t mgf1_t;
  25
  26 #include "xof.h"
  27
  28 /**
  29  * Implements the PKCS#1 MGF1 Mask Generation Function based on a hash function
  30  * defined in section 10.2.1 of RFC 2437
  31  */
  32 struct mgf1_t {
  33
  34         /**
  35          * Generic xof_t interface for this Extended Output Function (XOF).
  36          */
  37         xof_t xof_interface;
  38
  39         /**
  40          * Hash the seed before using it as a seed for MGF1
  41          *
  42          * @param yes           TRUE if seed has to be hashed first
  43          */
  44         void (*set_hash_seed)(mgf1_t *this, bool yes);
  45 };
  46
  47 #endif /** MGF1_H_ @}*/