summaryrefslogtreecommitdiffstats
path: root/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c')
-rw-r--r--third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c b/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c
new file mode 100644
index 0000000..160d162
--- /dev/null
+++ b/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_mulmod.c
@@ -0,0 +1,25 @@
+#include "tommath_private.h"
+#ifdef BN_MP_MULMOD_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+/* d = a * b (mod c) */
+mp_err mp_mulmod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d)
+{
+ mp_err err;
+ mp_int t;
+
+ if ((err = mp_init_size(&t, c->used)) != MP_OKAY) {
+ return err;
+ }
+
+ if ((err = mp_mul(a, b, &t)) != MP_OKAY) {
+ goto LBL_ERR;
+ }
+ err = mp_mod(&t, c, d);
+
+LBL_ERR:
+ mp_clear(&t);
+ return err;
+}
+#endif