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authorOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
committerOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
commit6585e5ad764ee2414d9b01f30784b6549bc8f58e (patch)
tree4ea258d5327838363dc3ac66d09ecc94686f3e26 /keyexchange/isakmpd-20041012/gmp_util.c
parentripe requests, final (diff)
added keyexchange
Diffstat (limited to 'keyexchange/isakmpd-20041012/gmp_util.c')
-rw-r--r--keyexchange/isakmpd-20041012/gmp_util.c105
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
+ }
+}