diff options
Diffstat (limited to 'libtommath/bn_mp_prime_rabin_miller_trials.c')
| -rw-r--r-- | libtommath/bn_mp_prime_rabin_miller_trials.c | 57 |
1 files changed, 24 insertions, 33 deletions
diff --git a/libtommath/bn_mp_prime_rabin_miller_trials.c b/libtommath/bn_mp_prime_rabin_miller_trials.c index 1c0a748..8bbaf6c 100644 --- a/libtommath/bn_mp_prime_rabin_miller_trials.c +++ b/libtommath/bn_mp_prime_rabin_miller_trials.c @@ -1,39 +1,34 @@ #include "tommath_private.h" #ifdef BN_MP_PRIME_RABIN_MILLER_TRIALS_C -/* LibTomMath, multiple-precision integer library -- Tom St Denis - * - * LibTomMath is a library that provides multiple-precision - * integer arithmetic as well as number theoretic functionality. - * - * The library was designed directly after the MPI library by - * Michael Fromberger but has been written from scratch with - * additional optimizations in place. - * - * SPDX-License-Identifier: Unlicense - */ - +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ static const struct { int k, t; } sizes[] = { - { 80, -1 }, /* Use deterministic algorithm for size <= 80 bits */ - { 81, 39 }, - { 96, 37 }, - { 128, 32 }, - { 160, 27 }, - { 192, 21 }, - { 256, 16 }, - { 384, 10 }, - { 512, 7 }, - { 640, 6 }, - { 768, 5 }, - { 896, 4 }, - { 1024, 4 }, - { 2048, 2 }, - { 4096, 1 }, + { 80, -1 }, /* Use deterministic algorithm for size <= 80 bits */ + { 81, 37 }, /* max. error = 2^(-96)*/ + { 96, 32 }, /* max. error = 2^(-96)*/ + { 128, 40 }, /* max. error = 2^(-112)*/ + { 160, 35 }, /* max. error = 2^(-112)*/ + { 256, 27 }, /* max. error = 2^(-128)*/ + { 384, 16 }, /* max. error = 2^(-128)*/ + { 512, 18 }, /* max. error = 2^(-160)*/ + { 768, 11 }, /* max. error = 2^(-160)*/ + { 896, 10 }, /* max. error = 2^(-160)*/ + { 1024, 12 }, /* max. error = 2^(-192)*/ + { 1536, 8 }, /* max. error = 2^(-192)*/ + { 2048, 6 }, /* max. error = 2^(-192)*/ + { 3072, 4 }, /* max. error = 2^(-192)*/ + { 4096, 5 }, /* max. error = 2^(-256)*/ + { 5120, 4 }, /* max. error = 2^(-256)*/ + { 6144, 4 }, /* max. error = 2^(-256)*/ + { 8192, 3 }, /* max. error = 2^(-256)*/ + { 9216, 3 }, /* max. error = 2^(-256)*/ + { 10240, 2 } /* For bigger keysizes use always at least 2 Rounds */ }; -/* returns # of RM trials required for a given bit size and max. error of 2^(-96)*/ +/* returns # of RM trials required for a given bit size */ int mp_prime_rabin_miller_trials(int size) { int x; @@ -45,12 +40,8 @@ int mp_prime_rabin_miller_trials(int size) return (x == 0) ? sizes[0].t : sizes[x - 1].t; } } - return sizes[x-1].t + 1; + return sizes[x-1].t; } #endif - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */ |