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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 */