diff options
Diffstat (limited to 'keyexchange/isakmpd-20041012/gmp_util.c')
| -rw-r--r-- | keyexchange/isakmpd-20041012/gmp_util.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/keyexchange/isakmpd-20041012/gmp_util.c b/keyexchange/isakmpd-20041012/gmp_util.c new file mode 100644 index 0000000..2a338d2 --- /dev/null +++ b/keyexchange/isakmpd-20041012/gmp_util.c @@ -0,0 +1,105 @@ +/* $OpenBSD: gmp_util.c,v 1.11 2004/04/15 18:39:25 deraadt Exp $ */ +/* $EOM: gmp_util.c,v 1.7 2000/09/18 00:01:47 ho Exp $ */ + +/* + * Copyright (c) 1998 Niels Provos. All rights reserved. + * Copyright (c) 1999, 2000 Niklas Hallqvist. All rights reserved. + * Copyright (c) 2000 Håkan Olsson. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * This code was written under funding by Ericsson Radio Systems. + */ + +#include <sys/param.h> + +#include "sysdep.h" + +#include "gmp_util.h" +#include "math_mp.h" + +/* Various utility functions for gmp, used in more than one module */ + +u_int32_t +mpz_sizeinoctets(math_mp_t a) +{ +#if MP_FLAVOUR == MP_FLAVOUR_GMP + return (7 + mpz_sizeinbase(a, 2)) >> 3; +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + return BN_num_bytes(a); +#endif +} + +void +mpz_getraw(u_int8_t *raw, math_mp_t v, u_int32_t len) +{ + math_mp_t a; + +#if MP_FLAVOUR == MP_FLAVOUR_GMP + math_mp_t tmp; + + /* XXX mpz_get_str (raw, BASE, v); ? */ + mpz_init_set(a, v); + mpz_init(tmp); +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + /* XXX bn2bin? */ + a = BN_dup(v); +#endif + + while (len-- > 0) +#if MP_FLAVOUR == MP_FLAVOUR_GMP + raw[len] = mpz_fdiv_qr_ui(a, tmp, a, 256); +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + raw[len] = BN_div_word(a, 256); +#endif + +#if MP_FLAVOUR == MP_FLAVOUR_GMP + mpz_clear(a); + mpz_clear(tmp); +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + BN_clear_free(a); +#endif +} + +void +mpz_setraw(math_mp_t d, u_int8_t *s, u_int32_t l) +{ + u_int32_t i; + +#if MP_FLAVOUR == MP_FLAVOUR_GMP + /* XXX mpz_set_str (d, s, 0); */ + mpz_set_si(d, 0); +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + /* XXX bin2bn? */ + BN_set_word(d, 0); +#endif + for (i = 0; i < l; i++) { +#if MP_FLAVOUR == MP_FLAVOUR_GMP + mpz_mul_ui(d, d, 256); + mpz_add_ui(d, d, s[i]); +#elif MP_FLAVOUR == MP_FLAVOUR_OPENSSL + BN_mul_word(d, 256); + BN_add_word(d, s[i]); +#endif + } +} |