1 files changed, 0 insertions, 102 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c b/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c
deleted file mode 100644
index 325472427c..0000000000
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/curve_sigs.c
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-#include "ge.h"
-#include "curve_sigs.h"
-#include "crypto_sign.h"
-#include "crypto_additions.h"
-
-int curve25519_sign(unsigned char* signature_out,
-                    const unsigned char* curve25519_privkey,
-                    const unsigned char* msg, const unsigned long msg_len,
-                    const unsigned char* random)
-{
-  ge_p3 ed_pubkey_point; /* Ed25519 pubkey point */
-  unsigned char ed_pubkey[32]; /* Ed25519 encoded pubkey */
-  unsigned char *sigbuf; /* working buffer */
-  unsigned char sign_bit = 0;
-
-  if ((sigbuf = malloc(msg_len + 128)) == 0) {
-    memset(signature_out, 0, 64);
-    return -1;
-  }
-
-  /* Convert the Curve25519 privkey to an Ed25519 public key */
-  ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey);
-  ge_p3_tobytes(ed_pubkey, &ed_pubkey_point);
-  sign_bit = ed_pubkey[31] & 0x80;
-
-  /* Perform an Ed25519 signature with explicit private key */
-  crypto_sign_modified(sigbuf, msg, msg_len, curve25519_privkey,
-                       ed_pubkey, random);
-  memmove(signature_out, sigbuf, 64);
-
-  /* Encode the sign bit into signature (in unused high bit of S) */
-   signature_out[63] &= 0x7F; /* bit should be zero already, but just in case */
-   signature_out[63] |= sign_bit;
-
-   free(sigbuf);
-   return 0;
-}
-
-int curve25519_verify(const unsigned char* signature,
-                      const unsigned char* curve25519_pubkey,
-                      const unsigned char* msg, const unsigned long msg_len)
-{
-  fe u;
-  fe y;
-  unsigned char ed_pubkey[32];
-  unsigned char *verifybuf  = NULL; /* working buffer */
-  unsigned char *verifybuf2 = NULL; /* working buffer #2 */
-  int result;
-
-  if ((verifybuf = malloc(msg_len + 64)) == 0) {
-   result = -1;
-   goto err;
-  }
-
-  if ((verifybuf2 = malloc(msg_len + 64)) == 0) {
-    result = -1;
-    goto err;
-  }
-
-  /* Convert the Curve25519 public key into an Ed25519 public key.  In
-     particular, convert Curve25519's "montgomery" x-coordinate (u) into an
-     Ed25519 "edwards" y-coordinate:
-
-     y = (u - 1) / (u + 1)
-
-     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
-
-     Then move the sign bit into the pubkey from the signature.
-  */
-  fe_frombytes(u, curve25519_pubkey);
-  fe_montx_to_edy(y, u);
-  fe_tobytes(ed_pubkey, y);
-
-  /* Copy the sign bit, and remove it from signature */
-  ed_pubkey[31] &= 0x7F;  /* bit should be zero already, but just in case */
-  ed_pubkey[31] |= (signature[63] & 0x80);
-  memmove(verifybuf, signature, 64);
-  verifybuf[63] &= 0x7F;
-
-  memmove(verifybuf+64, msg, msg_len);
-
-  /* Then perform a normal Ed25519 verification, return 0 on success */
-  /* The below call has a strange API: */
-  /* verifybuf = R || S || message */
-  /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets 
-     replaced with pubkey for hashing */
-  result = crypto_sign_open_modified(verifybuf2, verifybuf, 64 + msg_len, ed_pubkey);
-
-  err:
-
-  if (verifybuf != NULL) {
-    free(verifybuf);
-  }
-
-  if (verifybuf2 != NULL) {
-    free(verifybuf2);
-  }
-
-  return result;
-}