Added ref10 shen_ed25519_ref code, which includes code that can replace crypto-ops with a version straight from Bernstein's ref 10

1 files changed, 148 insertions, 0 deletions

diff --git a/src/crypto/shen_ed25519_ref/crypto-ops.h b/src/crypto/shen_ed25519_ref/crypto-ops.h
new file mode 100644
index 000000000..6e1eb19a1
--- /dev/null
+++ b/src/crypto/shen_ed25519_ref/crypto-ops.h
@@ -0,0 +1,148 @@
+// Copyright (c) 2014-2015, The Monero Project
+// 
+// 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.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+#include <stdint.h>
+
+#pragma once
+
+
+/* From fe.h */
+
+//this guy may throw errors in windows
+typedef int32_t fe[10];
+
+/* From ge.h */
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+} ge_p2;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p3;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p1p1;
+
+typedef struct {
+  fe yplusx;
+  fe yminusx;
+  fe xy2d;
+} ge_precomp;
+
+typedef struct {
+  fe YplusX;
+  fe YminusX;
+  fe Z;
+  fe T2d;
+} ge_cached;
+
+/* From ge_add.c */
+
+void ge_add(ge_p1p1 *, const ge_p3 *, const ge_cached *);
+
+/* From ge_double_scalarmult.c, modified */
+
+typedef ge_cached ge_dsmp[8];
+extern const ge_precomp ge_Bi[8];
+void ge_dsm_precomp(ge_dsmp r, const ge_p3 *s);
+void ge_double_scalarmult_base_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *);
+
+/* From ge_frombytes.c, modified */
+
+extern const fe fe_sqrtm1;
+extern const fe fe_d;
+int ge_frombytes_vartime(ge_p3 *, const unsigned char *);
+
+/* From ge_p1p1_to_p2.c */
+
+void ge_p1p1_to_p2(ge_p2 *, const ge_p1p1 *);
+
+/* From ge_p1p1_to_p3.c */
+
+void ge_p1p1_to_p3(ge_p3 *, const ge_p1p1 *);
+
+/* From ge_p2_dbl.c */
+
+void ge_p2_dbl(ge_p1p1 *, const ge_p2 *);
+
+/* From ge_p3_to_cached.c */
+
+extern const fe fe_d2;
+void ge_p3_to_cached(ge_cached *, const ge_p3 *);
+
+/* From ge_p3_to_p2.c */
+
+void ge_p3_to_p2(ge_p2 *, const ge_p3 *);
+
+/* From ge_p3_tobytes.c */
+
+void ge_p3_tobytes(unsigned char *, const ge_p3 *);
+
+/* From ge_scalarmult_base.c */
+
+extern const ge_precomp ge_base[32][8];
+void ge_scalarmult_base(ge_p3 *, const unsigned char *);
+
+/* From ge_tobytes.c */
+
+void ge_tobytes(unsigned char *, const ge_p2 *);
+
+/* From sc_reduce.c */
+
+void sc_reduce(unsigned char *);
+
+/* New code */
+
+void ge_scalarmult(ge_p2 *, const unsigned char *, const ge_p3 *);
+void ge_double_scalarmult_precomp_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *, const ge_dsmp);
+void ge_mul8(ge_p1p1 *, const ge_p2 *);
+extern const fe fe_ma2;
+extern const fe fe_ma;
+extern const fe fe_fffb1;
+extern const fe fe_fffb2;
+extern const fe fe_fffb3;
+extern const fe fe_fffb4;
+void ge_fromfe_frombytes_vartime(ge_p2 *, const unsigned char *);
+void sc_0(unsigned char *);
+void sc_reduce32(unsigned char *);
+void sc_add(unsigned char *, const unsigned char *, const unsigned char *);
+void sc_sub(unsigned char *, const unsigned char *, const unsigned char *);
+void sc_mulsub(unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *);
+int sc_check(const unsigned char *);
+int sc_isnonzero(const unsigned char *); /* Doesn't normalize */