crypto lib

1 files changed, 115 insertions, 0 deletions

diff --git a/src/crypto/crypto-ops.h b/src/crypto/crypto-ops.h
new file mode 100644
index 000000000..3c253bb5e
--- /dev/null
+++ b/src/crypto/crypto-ops.h
@@ -0,0 +1,115 @@
+#pragma once
+
+/* From fe.h */
+
+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 */
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