1 files changed, 0 insertions, 85 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c
deleted file mode 100644
index 20b85bb155..0000000000
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/vopen_modified.c
+++ /dev/null
@@ -1,85 +0,0 @@
-#include <string.h>
-#include "sc.h"
-#include "ge.h"
-#include "crypto_hash_sha512.h"
-#include "crypto_verify_32.h"
-#include "crypto_additions.h"
-#include "crypto_sign.h"
-
-int crypto_vsign_open_modified(
-  unsigned char *m,
-  const unsigned char *sm,unsigned long long smlen,
-  const unsigned char *pk, const ge_p3* Bv
-)
-{
-  ge_p3 Vneg, V, Aneg, A, c_V, c_A, h_Vneg, s_Bv;
-  unsigned char h[32];
-  unsigned char s[32];
-  ge_p2 R;
-  unsigned char hcheck[64];
-  unsigned char vrf_output[64];
-  int count;
-  ge_p1p1 Rp1p1;
-  ge_p3 Rv;
-  ge_cached h_Vnegcached;
-
-  if (smlen < 96) goto badsig;
-  if (sm[63] & 224) goto badsig; /* strict parsing of h */
-  if (sm[95] & 224) goto badsig; /* strict parsing of s */
-
-  /* Load -A */
-  if (ge_frombytes_negate_vartime(&Aneg,pk) != 0) goto badsig;
-
-  /* Load -V, h, s */
-  if (ge_frombytes_negate_vartime(&Vneg, sm) != 0) goto badsig;
-  memmove(h, sm + 32, 32); 
-  memmove(s, sm + 64, 32); 
-  if (h[31] & 224) goto badsig; /* strict parsing of h */
-  if (s[31] & 224) goto badsig; /* strict parsing of s */
-
-  ge_neg(&A, &Aneg);
-  ge_neg(&V, &Vneg);
-  ge_scalarmult_cofactor(&c_A, &A);
-  ge_scalarmult_cofactor(&c_V, &V);
-  if (ge_isneutral(&c_A) || ge_isneutral(&c_V) || ge_isneutral(Bv))
-    goto badsig;
-
-  // R = (s*B) + (h * -A))
-  ge_double_scalarmult_vartime(&R, h, &Aneg, s);
-
-  // s * Bv
-  ge_scalarmult(&s_Bv, s, Bv);
-
-  // h * -V
-  ge_scalarmult(&h_Vneg, h, &Vneg);
-
-  // Rv = (sc * Bv) + (hc * (-V))
-  ge_p3_to_cached(&h_Vnegcached, &h_Vneg);
-  ge_add(&Rp1p1, &s_Bv, &h_Vnegcached);
-  ge_p1p1_to_p3(&Rv, &Rp1p1);
-
-  // Check h == SHA512(label(4) || A || V || R || Rv || M)
-  m[0] = 0xFB;  // label 4
-  for (count = 1; count < 32; count++)
-    m[count] = 0xFF;
-  memmove(m+32, pk, 32);
-  ge_p3_tobytes(m+64, &V);
-  ge_tobytes(m+96, &R);
-  ge_p3_tobytes(m+128, &Rv);
-  memmove(m+160, sm+96, smlen - 96);
-
-  crypto_hash_sha512(hcheck, m, smlen + 64);
-  sc_reduce(hcheck);
-
-  if (crypto_verify_32(hcheck, h) == 0) {
-    ge_p3_tobytes(m+32, &c_V);
-    m[0] = 0xFA; // label 5
-    crypto_hash_sha512(vrf_output, m, 64);
-    memmove(m, vrf_output, 32);
-    return 0;
-  }
-
-badsig:
-  memset(m, 0, 32);
-  return -1;
-}