Initial commit

1 files changed, 73 insertions, 0 deletions

diff --git a/wolfcrypt/src/fp_sqr_comba_3.i b/wolfcrypt/src/fp_sqr_comba_3.i
new file mode 100644
index 0000000..51c3d74
--- /dev/null
+++ b/wolfcrypt/src/fp_sqr_comba_3.i
@@ -0,0 +1,73 @@
+/* fp_sqr_comba_3.i
+ *
+ * Copyright (C) 2006-2020 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+
+#ifdef TFM_SQR3
+int fp_sqr_comba3(fp_int *A, fp_int *B)
+{
+   fp_digit *a, b[6], c0, c1, c2;
+#ifdef TFM_ISO
+   fp_word tt;
+#endif
+
+   a = A->dp;
+   COMBA_START; 
+
+   /* clear carries */
+   CLEAR_CARRY;
+
+   /* output 0 */
+   SQRADD(a[0],a[0]);
+   COMBA_STORE(b[0]);
+
+   /* output 1 */
+   CARRY_FORWARD;
+   SQRADD2(a[0], a[1]); 
+   COMBA_STORE(b[1]);
+
+   /* output 2 */
+   CARRY_FORWARD;
+   SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]); 
+   COMBA_STORE(b[2]);
+
+   /* output 3 */
+   CARRY_FORWARD;
+   SQRADD2(a[1], a[2]); 
+   COMBA_STORE(b[3]);
+
+   /* output 4 */
+   CARRY_FORWARD;
+   SQRADD(a[2], a[2]); 
+   COMBA_STORE(b[4]);
+   COMBA_STORE2(b[5]);
+   COMBA_FINI;
+
+   B->used = 6;
+   B->sign = FP_ZPOS;
+   XMEMCPY(B->dp, b, 6 * sizeof(fp_digit));
+   fp_clamp(B);
+
+   return FP_OKAY;
+}
+#endif
+
+