1 files changed, 0 insertions, 89 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c b/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c
deleted file mode 100644
index 8f60169bd4..0000000000
--- a/libs/libaxolotl/src/curve25519/ed25519/additions/vxeddsa.c
+++ /dev/null
@@ -1,89 +0,0 @@
-#include <string.h>
-#include "ge.h"
-#include "crypto_additions.h"
-#include "zeroize.h"
-#include "vxeddsa.h"
-#include "crypto_verify_32.h"
-
-int vxed25519_sign(unsigned char* signature_out,
-                   const unsigned char* curve25519_privkey,
-                   const unsigned char* msg, const unsigned long msg_len,
-                   const unsigned char* random)
-{
-  unsigned char a[32], aneg[32];
-  unsigned char A[32];
-  ge_p3 Bv, ed_pubkey_point;
-  unsigned char sigbuf[MAX_MSG_LEN + 160]; /* working buffer */
-  unsigned char sign_bit = 0;
-
-  if (msg_len > MAX_MSG_LEN) {
-    memset(signature_out, 0, 96);
-    return -1;
-  }
-  /* Convert the Curve25519 privkey to an Ed25519 public key */
-  ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey);
-  ge_p3_tobytes(A, &ed_pubkey_point);
-
-  /* Force Edwards sign bit to zero */
-  sign_bit = (A[31] & 0x80) >> 7;
-  memcpy(a, curve25519_privkey, 32);
-  sc_neg(aneg, a);
-  sc_cmov(a, aneg, sign_bit); 
-  A[31] &= 0x7F;
-  
-  calculate_Bv_and_V(&Bv, signature_out, sigbuf, a, A, msg, msg_len);
-
-  /* Perform an Ed25519 signature with explicit private key */
-  crypto_vsign_modified(sigbuf, msg, msg_len, a, A, random, &Bv, signature_out /*V*/);
-  memmove(signature_out+32, sigbuf, 64);
-
-  zeroize(a, 32);
-  zeroize(aneg, 32);
-  return 0;
-}
-
-int vxed25519_verify(unsigned char* vrf_out,
-                     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[MAX_MSG_LEN + 160]; /* working buffer */
-  unsigned char verifybuf2[MAX_MSG_LEN + 160]; /* working buffer #2 ?? !!! */
-  ge_p3 Bv;
-
-  if (msg_len > MAX_MSG_LEN) {
-    return -1;
-  }
-
-  /* Convert the Curve25519 public key (u) into an Ed25519 public key.  
-
-     y = (u - 1) / (u + 1)
-
-     NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp
-  */
-  if (!fe_isreduced(curve25519_pubkey))
-      return -1;
-  fe_frombytes(u, curve25519_pubkey);
-  fe_montx_to_edy(y, u);
-  fe_tobytes(ed_pubkey, y);
-
-  calculate_Bv(&Bv, verifybuf, ed_pubkey, msg, msg_len);
-
-  memmove(verifybuf, signature, 96);
-  memmove(verifybuf+96, msg, msg_len);
-
-  /* Then perform a signature verification, return 0 on success */
-  /* The below call has a strange API: */
-  /* verifybuf = V || h || s || message */
-  /* verifybuf2 = used as buffer, gets the VRF output if success */
-  if (crypto_vsign_open_modified(verifybuf2, verifybuf, 96 + msg_len, ed_pubkey, &Bv) == 0) {
-    memmove(vrf_out, verifybuf2, 32);
-    return 0;
-  } else {
-    memset(vrf_out, 0, 32);
-    return -1;
-  }
-}