1 files changed, 69 insertions, 0 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h b/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h
new file mode 100644
index 0000000000..da4a1cd07b
--- /dev/null
+++ b/libs/libaxolotl/src/curve25519/ed25519/additions/crypto_additions.h
@@ -0,0 +1,69 @@
+
+#ifndef __CRYPTO_ADDITIONS__
+#define __CRYPTO_ADDITIONS__
+
+#include "crypto_uint32.h"
+#include "fe.h"
+#include "ge.h"
+
+#define MAX_MSG_LEN 256
+
+void sc_neg(unsigned char *b, const unsigned char *a);
+void sc_cmov(unsigned char* f, const unsigned char* g, unsigned char b);
+
+int fe_isequal(const fe f, const fe g);
+void fe_mont_rhs(fe v2, const fe u);
+void fe_montx_to_edy(fe y, const fe u);
+void fe_sqrt(fe b, const fe a);
+
+int ge_is_small_order(const ge_p3 *p);
+int ge_isneutral(const ge_p3* q);
+void ge_neg(ge_p3* r, const ge_p3 *p);
+void ge_montx_to_p3(ge_p3* p, const fe u, const unsigned char ed_sign_bit);
+void ge_p3_to_montx(fe u, const ge_p3 *p);
+void ge_scalarmult(ge_p3 *h, const unsigned char *a, const ge_p3 *A);
+void ge_scalarmult_cofactor(ge_p3 *q, const ge_p3 *p);
+
+void elligator(fe u, const fe r);
+void hash_to_point(ge_p3* p, const unsigned char* msg, const unsigned long in_len);
+void calculate_Bv(ge_p3* Bv,
+                  unsigned char* buf,
+                  const unsigned char* A,
+                  const unsigned char* msg, const unsigned long msg_len);
+void calculate_Bv_and_V(ge_p3* Bv,
+                        unsigned char* V,
+                        unsigned char* buf,
+                        const unsigned char* a,
+                        const unsigned char* A,
+                        const unsigned char* msg, const unsigned long msg_len);
+
+int crypto_sign_modified(
+  unsigned char *sm,
+  const unsigned char *m,unsigned long long mlen,
+  const unsigned char *sk, /* Curve/Ed25519 private key */
+  const unsigned char *pk, /* Ed25519 public key */
+  const unsigned char *random /* 64 bytes random to hash into nonce */
+  );
+
+int crypto_sign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk
+  );
+
+int crypto_vsign_modified(
+  unsigned char *sm,
+  const unsigned char *M,unsigned long Mlen,
+  const unsigned char *a, 
+  const unsigned char *A,
+  const unsigned char *random,
+  const ge_p3 *Bu,
+  const unsigned char *U);
+
+int crypto_vsign_open_modified(
+  unsigned char *m,
+  const unsigned char *sm,unsigned long long smlen,
+  const unsigned char *pk, const ge_p3* Bu);
+
+
+#endif