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authorSteffen Jaeckel <s@jaeckel.eu>2020-05-26 17:36:47 +0200
committerGitHub <noreply@github.com>2020-05-26 23:36:47 +0800
commitb4bd23b4d2a4c640880b49069e02cd598dd03416 (patch)
treefb480b4e501cc69b305de95fb15259aa6afa1963 /libtommath/bn_mp_to_sbin.c
parent724e61f8ae9e9f216b0252e41c5ebd5d64ad79a6 (diff)
Update LibTomMath to 1.2.0 (#84)
* update C files * update other files * update headers * update makefiles * remove mp_set/get_double() * use ltm 1.2.0 API * update ltm_desc * use bundled tommath if system-tommath is too old * XMALLOC etc. were changed to MP_MALLOC etc.
Diffstat (limited to 'libtommath/bn_mp_to_sbin.c')
-rw-r--r--libtommath/bn_mp_to_sbin.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/libtommath/bn_mp_to_sbin.c b/libtommath/bn_mp_to_sbin.c
new file mode 100644
index 0000000..dbaf53e
--- /dev/null
+++ b/libtommath/bn_mp_to_sbin.c
@@ -0,0 +1,22 @@
+#include "tommath_private.h"
+#ifdef BN_MP_TO_SBIN_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+/* store in signed [big endian] format */
+mp_err mp_to_sbin(const mp_int *a, unsigned char *buf, size_t maxlen, size_t *written)
+{
+ mp_err err;
+ if (maxlen == 0u) {
+ return MP_BUF;
+ }
+ if ((err = mp_to_ubin(a, buf + 1, maxlen - 1u, written)) != MP_OKAY) {
+ return err;
+ }
+ if (written != NULL) {
+ (*written)++;
+ }
+ buf[0] = (a->sign == MP_ZPOS) ? (unsigned char)0 : (unsigned char)1;
+ return MP_OKAY;
+}
+#endif