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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/fips_prf/fips_prf.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2006-2008 Martin Willi
                      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 fips_prf fips_prf
                     18:  * @{ @ingroup fips_prf_p
                     19:  */
                     20: 
                     21: #ifndef FIPS_PRF_H_
                     22: #define FIPS_PRF_H_
                     23: 
                     24: typedef struct fips_prf_t fips_prf_t;
                     25: 
                     26: #include <library.h>
                     27: #include <crypto/prfs/prf.h>
                     28: #include <crypto/hashers/hasher.h>
                     29: 
                     30: /**
                     31:  * Implementation of prf_t using the FIPS 186-2-change1 standard.
                     32:  *
                     33:  * FIPS defines a "General Purpose Random Number Generator" (Revised
                     34:  * Algorithm for Computing m values of x (Appendix 3.1 of FIPS 186-2)). This
                     35:  * implementation is not intended for private key generation and therefore does
                     36:  * not include the "mod q" operation (see FIPS 186-2-change1 p74).
                     37:  * The FIPS PRF is stateful; the key changes every time when bytes are acquired.
                     38:  */
                     39: struct fips_prf_t {
                     40: 
                     41:        /**
                     42:         * Generic prf_t interface for this fips_prf_t class.
                     43:         */
                     44:        prf_t prf_interface;
                     45: };
                     46: 
                     47: /**
                     48:  * Creates a new fips_prf_t object.
                     49:  *
                     50:  * FIPS 186-2 defines G() functions used in the PRF function. It can
                     51:  * be implemented either based on SHA1 or DES.
                     52:  * The G() function is selected using the algo parameter.
                     53:  *
                     54:  * @param algo         specific FIPS PRF implementation, specifies G() function
                     55:  * @return                     fips_prf_t object, NULL if not supported.
                     56:  */
                     57: fips_prf_t *fips_prf_create(pseudo_random_function_t algo);
                     58: 
                     59: #endif /** FIPS_PRF_H_ @}*/