diff options
Diffstat (limited to 'security/nss/lib/freebl/mpi/utils/makeprime.c')
-rw-r--r-- | security/nss/lib/freebl/mpi/utils/makeprime.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/security/nss/lib/freebl/mpi/utils/makeprime.c b/security/nss/lib/freebl/mpi/utils/makeprime.c deleted file mode 100644 index 401b7532b..000000000 --- a/security/nss/lib/freebl/mpi/utils/makeprime.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * makeprime.c - * - * A simple prime generator function (and test driver). Prints out the - * first prime it finds greater than or equal to the starting value. - * - * Usage: makeprime <start> - * - * This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include <stdio.h> -#include <stdlib.h> -#include <ctype.h> - -/* These two must be included for make_prime() to work */ - -#include "mpi.h" -#include "mpprime.h" - -/* - make_prime(p, nr) - - Find the smallest prime integer greater than or equal to p, where - primality is verified by 'nr' iterations of the Rabin-Miller - probabilistic primality test. The caller is responsible for - generating the initial value of p. - - Returns MP_OKAY if a prime has been generated, otherwise the error - code indicates some other problem. The value of p is clobbered; the - caller should keep a copy if the value is needed. - */ -mp_err make_prime(mp_int *p, int nr); - -/* The main() is not required -- it's just a test driver */ -int -main(int argc, char *argv[]) -{ - mp_int start; - mp_err res; - - if (argc < 2) { - fprintf(stderr, "Usage: %s <start-value>\n", argv[0]); - return 1; - } - - mp_init(&start); - if (argv[1][0] == '0' && tolower(argv[1][1]) == 'x') { - mp_read_radix(&start, argv[1] + 2, 16); - } else { - mp_read_radix(&start, argv[1], 10); - } - mp_abs(&start, &start); - - if ((res = make_prime(&start, 5)) != MP_OKAY) { - fprintf(stderr, "%s: error: %s\n", argv[0], mp_strerror(res)); - mp_clear(&start); - - return 1; - - } else { - char *buf = malloc(mp_radix_size(&start, 10)); - - mp_todecimal(&start, buf); - printf("%s\n", buf); - free(buf); - - mp_clear(&start); - - return 0; - } - -} /* end main() */ - -/*------------------------------------------------------------------------*/ - -mp_err -make_prime(mp_int *p, int nr) -{ - mp_err res; - - if (mp_iseven(p)) { - mp_add_d(p, 1, p); - } - - do { - mp_digit which = prime_tab_size; - - /* First test for divisibility by a few small primes */ - if ((res = mpp_divis_primes(p, &which)) == MP_YES) - continue; - else if (res != MP_NO) - goto CLEANUP; - - /* If that passes, try one iteration of Fermat's test */ - if ((res = mpp_fermat(p, 2)) == MP_NO) - continue; - else if (res != MP_YES) - goto CLEANUP; - - /* If that passes, run Rabin-Miller as often as requested */ - if ((res = mpp_pprime(p, nr)) == MP_YES) - break; - else if (res != MP_NO) - goto CLEANUP; - - } while ((res = mp_add_d(p, 2, p)) == MP_OKAY); - -CLEANUP: - return res; - -} /* end make_prime() */ - -/*------------------------------------------------------------------------*/ -/* HERE THERE BE DRAGONS */ |