1 files changed, 0 insertions, 100 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c b/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c
deleted file mode 100644
index 537858db6a..0000000000
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/uopen_modified.c
+++ /dev/null
@@ -1,100 +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_usign_open_modified(
-  unsigned char *m,unsigned long long *mlen,
-  const unsigned char *sm,unsigned long long smlen,
-  const unsigned char *pk, const ge_p3* Bu
-)
-{
-  ge_p3 U;
-  unsigned char h[64];
-  unsigned char s[64];
-  unsigned char strict[64];
-  ge_p3 A;
-  ge_p2 R;
-  unsigned char hcheck[64];
-  int count;
-  // Ru = sBu + h(-U)
-  ge_p3 sBu, hU;
-  ge_p3 Ru;
-
-  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(&A,pk) != 0) goto badsig;
-
-  /* Load -U, h, s */
-  ge_frombytes_negate_vartime(&U, sm);
-  memset(h, 0, 64);
-  memset(s, 0, 64);
-  memmove(h, sm + 32, 32); 
-  memmove(s, sm + 64, 32); 
-
-  /* Insist that s and h are reduced scalars (strict parsing) */
-  memcpy(strict, h, 64);
-  sc_reduce(strict);
-  if (memcmp(strict, h, 32) != 0)
-    goto badsig;
-  memcpy(strict, s, 64);
-  sc_reduce(strict);
-  if (memcmp(strict, s, 32) != 0)
-    goto badsig;
-
-  /* Reject U (actually -U) if small order */
-  if (ge_is_small_order(&U))
-    goto badsig;
-
-  // R = sB + h(-A)
-  ge_double_scalarmult_vartime(&R,h,&A,s);
-
-  // sBu
-  ge_scalarmult(&sBu, s, Bu);
-
-  // h(-U)
-  ge_scalarmult(&hU, h, &U);
-
-  // Ru = sBu + h(-U)
-  {
-	  ge_p1p1 Rp1p1;
-	  ge_cached hUcached;
-	  ge_p3_to_cached(&hUcached, &hU);
-	  ge_add(&Rp1p1, &sBu, &hUcached);
-	  ge_p1p1_to_p3(&Ru, &Rp1p1);
-  }
-
-  // Check h == SHA512(label(4) || A || U || R || Ru || M)
-  m[0] = 0xFB;
-  for (count = 1; count < 32; count++)
-    m[count] = 0xFF;
-  memmove(m+32, pk, 32);
-  /* undo the negation for U */
-  fe_neg(U.X, U.X);
-  fe_neg(U.T, U.T);
-  ge_p3_tobytes(m+64, &U);
-  ge_tobytes(m+96, &R);
-  ge_p3_tobytes(m+128, &Ru);
-  memmove(m+160, sm+96, smlen - 96);
-
-  crypto_hash_sha512(hcheck, m, smlen + 64);
-  sc_reduce(hcheck);
-
-  if (crypto_verify_32(hcheck, h) == 0) {
-    memmove(m,m + 64,smlen - 64);
-    memset(m + smlen - 64,0,64);
-    *mlen = smlen - 64;
-    return 0;
-  }
-
-badsig:
-  *mlen = -1;
-  memset(m,0,smlen);
-  return -1;
-}