1 files changed, 0 insertions, 130 deletions
diff --git a/src/pubkey/rw/rw.cpp b/src/pubkey/rw/rw.cpp
deleted file mode 100644
index 63e7977d8..000000000
--- a/src/pubkey/rw/rw.cpp
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
-* Rabin-Williams
-* (C) 1999-2008 Jack Lloyd
-*
-* Distributed under the terms of the Botan license
-*/
-
-#include <botan/rw.h>
-#include <botan/numthry.h>
-#include <botan/keypair.h>
-#include <botan/parsing.h>
-#include <algorithm>
-#include <future>
-
-namespace Botan {
-
-/*
-* Create a Rabin-Williams private key
-*/
-RW_PrivateKey::RW_PrivateKey(RandomNumberGenerator& rng,
-                             size_t bits, size_t exp)
-   {
-   if(bits < 1024)
-      throw Invalid_Argument(algo_name() + ": Can't make a key that is only " +
-                             std::to_string(bits) + " bits long");
-   if(exp < 2 || exp % 2 == 1)
-      throw Invalid_Argument(algo_name() + ": Invalid encryption exponent");
-
-   e = exp;
-
-   do
-      {
-      p = random_prime(rng, (bits + 1) / 2, e / 2, 3, 4);
-      q = random_prime(rng, bits - p.bits(), e / 2, ((p % 8 == 3) ? 7 : 3), 8);
-      n = p * q;
-      } while(n.bits() != bits);
-
-   d = inverse_mod(e, lcm(p - 1, q - 1) >> 1);
-   d1 = d % (p - 1);
-   d2 = d % (q - 1);
-   c = inverse_mod(q, p);
-
-   gen_check(rng);
-   }
-
-/*
-* Check Private Rabin-Williams Parameters
-*/
-bool RW_PrivateKey::check_key(RandomNumberGenerator& rng, bool strong) const
-   {
-   if(!IF_Scheme_PrivateKey::check_key(rng, strong))
-      return false;
-
-   if(!strong)
-      return true;
-
-   if((e * d) % (lcm(p - 1, q - 1) / 2) != 1)
-      return false;
-
-   return KeyPair::signature_consistency_check(rng, *this, "EMSA2(SHA-1)");
-   }
-
-RW_Signature_Operation::RW_Signature_Operation(const RW_PrivateKey& rw) :
-   n(rw.get_n()),
-   e(rw.get_e()),
-   q(rw.get_q()),
-   c(rw.get_c()),
-   powermod_d1_p(rw.get_d1(), rw.get_p()),
-   powermod_d2_q(rw.get_d2(), rw.get_q()),
-   mod_p(rw.get_p())
-   {
-   }
-
-secure_vector<byte>
-RW_Signature_Operation::sign(const byte msg[], size_t msg_len,
-                             RandomNumberGenerator& rng)
-   {
-   rng.add_entropy(msg, msg_len);
-
-   if(!blinder.initialized())
-      {
-      BigInt k(rng, std::min<size_t>(160, n.bits() - 1));
-      blinder = Blinder(power_mod(k, e, n), inverse_mod(k, n), n);
-      }
-
-   BigInt i(msg, msg_len);
-
-   if(i >= n || i % 16 != 12)
-      throw Invalid_Argument("Rabin-Williams: invalid input");
-
-   if(jacobi(i, n) != 1)
-      i >>= 1;
-
-   i = blinder.blind(i);
-
-   auto future_j1 = std::async(std::launch::async, powermod_d1_p, i);
-   const BigInt j2 = powermod_d2_q(i);
-   BigInt j1 = future_j1.get();
-
-   j1 = mod_p.reduce(sub_mul(j1, j2, c));
-
-   const BigInt r = blinder.unblind(mul_add(j1, q, j2));
-
-   return BigInt::encode_1363(std::min(r, n - r), n.bytes());
-   }
-
-secure_vector<byte>
-RW_Verification_Operation::verify_mr(const byte msg[], size_t msg_len)
-   {
-   BigInt m(msg, msg_len);
-
-   if((m > (n >> 1)) || m.is_negative())
-      throw Invalid_Argument("RW signature verification: m > n / 2 || m < 0");
-
-   BigInt r = powermod_e_n(m);
-   if(r % 16 == 12)
-      return BigInt::encode_locked(r);
-   if(r % 8 == 6)
-      return BigInt::encode_locked(2*r);
-
-   r = n - r;
-   if(r % 16 == 12)
-      return BigInt::encode_locked(r);
-   if(r % 8 == 6)
-      return BigInt::encode_locked(2*r);
-
-   throw Invalid_Argument("RW signature verification: Invalid signature");
-   }
-
-}