From 615ed4e46a52b6bfe0bfc581b8c2fbcc6cc488d1 Mon Sep 17 00:00:00 2001
From: Steffen Jaeckel <s_jaeckel@gmx.de>
Date: Mon, 16 Sep 2019 15:50:38 +0200
Subject: update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation
 (#79)

* make key-generation compliant to FIPS 186.4

* fix includes in tommath_class.h

* update fuzzcorpus instead of error-out

* fixup fuzzing make-targets

* update Makefile.in

* apply necessary patches to ltm sources

* clean-up not required ltm files

* update to vanilla ltm 1.1.0

this already only contains the required files

* remove set/get double
---
 libtommath/bn_mp_tc_and.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 libtommath/bn_mp_tc_and.c

(limited to 'libtommath/bn_mp_tc_and.c')

diff --git a/libtommath/bn_mp_tc_and.c b/libtommath/bn_mp_tc_and.c
new file mode 100644
index 0000000..6b59023
--- /dev/null
+++ b/libtommath/bn_mp_tc_and.c
@@ -0,0 +1,90 @@
+#include "tommath_private.h"
+#ifdef BN_MP_TC_AND_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * SPDX-License-Identifier: Unlicense
+ */
+
+/* two complement and */
+int mp_tc_and(const mp_int *a, const mp_int *b, mp_int *c)
+{
+   int res = MP_OKAY, bits, abits, bbits;
+   int as = mp_isneg(a), bs = mp_isneg(b);
+   mp_int *mx = NULL, _mx, acpy, bcpy;
+
+   if ((as != MP_NO) || (bs != MP_NO)) {
+      abits = mp_count_bits(a);
+      bbits = mp_count_bits(b);
+      bits = MAX(abits, bbits);
+      res = mp_init_set_int(&_mx, 1uL);
+      if (res != MP_OKAY) {
+         goto end;
+      }
+
+      mx = &_mx;
+      res = mp_mul_2d(mx, bits + 1, mx);
+      if (res != MP_OKAY) {
+         goto end;
+      }
+
+      if (as != MP_NO) {
+         res = mp_init(&acpy);
+         if (res != MP_OKAY) {
+            goto end;
+         }
+
+         res = mp_add(mx, a, &acpy);
+         if (res != MP_OKAY) {
+            mp_clear(&acpy);
+            goto end;
+         }
+         a = &acpy;
+      }
+      if (bs != MP_NO) {
+         res = mp_init(&bcpy);
+         if (res != MP_OKAY) {
+            goto end;
+         }
+
+         res = mp_add(mx, b, &bcpy);
+         if (res != MP_OKAY) {
+            mp_clear(&bcpy);
+            goto end;
+         }
+         b = &bcpy;
+      }
+   }
+
+   res = mp_and(a, b, c);
+
+   if ((as != MP_NO) && (bs != MP_NO) && (res == MP_OKAY)) {
+      res = mp_sub(c, mx, c);
+   }
+
+end:
+   if (a == &acpy) {
+      mp_clear(&acpy);
+   }
+
+   if (b == &bcpy) {
+      mp_clear(&bcpy);
+   }
+
+   if (mx == &_mx) {
+      mp_clear(mx);
+   }
+
+   return res;
+}
+#endif
+
+/* ref:         HEAD -> master, tag: v1.1.0 */
+/* git commit:  08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
+/* commit time: 2019-01-28 20:32:32 +0100 */
-- 
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