3
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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 "mycrypt.h" |
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12 |
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13 #ifdef MPI |
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14 |
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15 /* figures out if a number is prime (MR test) */ |
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16 int is_prime(mp_int *N, int *result) |
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17 { |
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18 int err; |
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19 _ARGCHK(N != NULL); |
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20 _ARGCHK(result != NULL); |
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21 if ((err = mp_prime_is_prime(N, mp_prime_rabin_miller_trials(mp_count_bits(N)), result)) != MP_OKAY) { |
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22 return mpi_to_ltc_error(err); |
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23 } |
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24 return CRYPT_OK; |
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25 } |
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26 |
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27 #endif |