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/*
* fips.h -- Performs FIPS 140-1/140-2 tests for RNGs
*
* Copyright (C) 2001 Philipp Rumpf
*
* 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, Suite 500, Boston, MA 02110-1335 USA
*/
#ifndef FIPS__H
#define FIPS__H
/* Size of a FIPS test buffer, do not change this */
#define FIPS_RNG_BUFFER_SIZE 2500
/* Context for running FIPS tests */
struct fips_ctx {
int poker[16], runs[12];
int ones, rlength, current_bit, last_bit, longrun;
unsigned int last32;
};
typedef struct fips_ctx fips_ctx_t;
/* Initializes the context for FIPS tests. last32 contains
* 32 bits of RNG data to init the continuous run test */
extern void fips_init(fips_ctx_t *ctx, unsigned int last32);
/*
* Return values for fips_run_rng_test. These values are OR'ed together
* for all tests that failed.
*/
#define FIPS_RNG_MONOBIT 0x0001 /* FIPS 140-2 2001-10-10 monobit */
#define FIPS_RNG_POKER 0x0002 /* FIPS 140-2 2001-10-10 poker */
#define FIPS_RNG_RUNS 0x0004 /* FIPS 140-2 2001-10-10 runs */
#define FIPS_RNG_LONGRUN 0x0008 /* FIPS 140-2 2001-10-10 long run */
#define FIPS_RNG_CONTINUOUS_RUN 0x0010 /* FIPS 140-2 continuous run */
/*
* Names for the FIPS tests, and bitmask
*/
#define N_FIPS_TESTS 5
extern const char *fips_test_names[N_FIPS_TESTS];
extern const unsigned int fips_test_mask[N_FIPS_TESTS];
/*
* Runs the FIPS 140-1 4.11.1 and 4.11.2 tests, as updated by
* FIPS 140-2 4.9, errata from 2001-10-10 (which set more strict
* intervals for the tests to pass), on a buffer of size
* FIPS_RNG_BUFFER_SIZE, using the given context.
*
* FIPS 140-2, errata of 2002-12-03 removed tests for non-deterministic
* RNGs, other than Continuous Run test.
*
* This funtion returns 0 if all tests passed, or a bitmask
* with bits set for every test that failed.
*
* It returns -1 if either fips_ctx or buf is NULL.
*/
extern int fips_run_rng_test(fips_ctx_t *ctx, const void *buf);
#endif /* FIPS__H */
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