Mercurial > dropbear

annotate src/misc/mpi/is_prime.c @ 222:36160290a1b2 libtomcrypt LTC_DB_0.46

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* change include path of options.h * don't use the constant ROL/ROR operations, since compilers seem to have problems
author Matt Johnston <matt@ucc.asn.au>
date Fri, 08 Jul 2005 19:13:24 +0000
parents 39d5d58461d6
children
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file is_prime.c
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15 Determines if integer is prime for LTC, Tom St Denis
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16 */
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17
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18 #ifdef MPI
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19
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20 /* figures out if a number is prime (MR test) */
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21 int is_prime(mp_int *N, int *result)
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22 {
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23 int err;
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24 LTC_ARGCHK(N != NULL);
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25 LTC_ARGCHK(result != NULL);
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26 if ((err = mp_prime_is_prime(N, mp_prime_rabin_miller_trials(mp_count_bits(N)), result)) != MP_OKAY) {
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27 return mpi_to_ltc_error(err);
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28 }
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29 return CRYPT_OK;
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30 }
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31
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32 #endif
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33
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34 /* $Source: /cvs/libtom/libtomcrypt/src/misc/mpi/is_prime.c,v $ */
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35 /* $Revision: 1.3 $ */
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36 /* $Date: 2005/05/05 14:35:59 $ */