1 files changed, 0 insertions, 192 deletions
diff --git a/src/lib/pubkey/nr/nr.cpp b/src/lib/pubkey/nr/nr.cpp
deleted file mode 100644
index 5e2cb1be5..000000000
--- a/src/lib/pubkey/nr/nr.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
-* Nyberg-Rueppel
-* (C) 1999-2010 Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/internal/pk_utils.h>
-#include <botan/nr.h>
-#include <botan/keypair.h>
-#include <botan/reducer.h>
-#include <future>
-
-namespace Botan {
-
-NR_PublicKey::NR_PublicKey(const AlgorithmIdentifier& alg_id,
-                           const secure_vector<byte>& key_bits) :
-   DL_Scheme_PublicKey(alg_id, key_bits, DL_Group::ANSI_X9_57)
-   {
-   }
-
-/*
-* NR_PublicKey Constructor
-*/
-NR_PublicKey::NR_PublicKey(const DL_Group& grp, const BigInt& y1)
-   {
-   m_group = grp;
-   m_y = y1;
-   }
-
-/*
-* Create a NR private key
-*/
-NR_PrivateKey::NR_PrivateKey(RandomNumberGenerator& rng,
-                             const DL_Group& grp,
-                             const BigInt& x_arg)
-   {
-   m_group = grp;
-   m_x = x_arg;
-
-   if(m_x == 0)
-      m_x = BigInt::random_integer(rng, 2, group_q() - 1);
-
-   m_y = power_mod(group_g(), m_x, group_p());
-
-   if(x_arg == 0)
-      gen_check(rng);
-   else
-      load_check(rng);
-   }
-
-NR_PrivateKey::NR_PrivateKey(const AlgorithmIdentifier& alg_id,
-                             const secure_vector<byte>& key_bits,
-                             RandomNumberGenerator& rng) :
-   DL_Scheme_PrivateKey(alg_id, key_bits, DL_Group::ANSI_X9_57)
-   {
-   m_y = power_mod(group_g(), m_x, group_p());
-
-   load_check(rng);
-   }
-
-/*
-* Check Private Nyberg-Rueppel Parameters
-*/
-bool NR_PrivateKey::check_key(RandomNumberGenerator& rng, bool strong) const
-   {
-   if(!DL_Scheme_PrivateKey::check_key(rng, strong) || m_x >= group_q())
-      return false;
-
-   if(!strong)
-      return true;
-
-   return KeyPair::signature_consistency_check(rng, *this, "EMSA1(SHA-1)");
-   }
-
-namespace {
-
-/**
-* Nyberg-Rueppel signature operation
-*/
-class NR_Signature_Operation : public PK_Ops::Signature_with_EMSA
-   {
-   public:
-      typedef NR_PrivateKey Key_Type;
-      NR_Signature_Operation(const NR_PrivateKey& nr, const std::string& emsa) :
-         PK_Ops::Signature_with_EMSA(emsa),
-         m_q(nr.group_q()),
-         m_x(nr.get_x()),
-         m_powermod_g_p(nr.group_g(), nr.group_p()),
-         m_mod_q(nr.group_q())
-         {
-         }
-
-      size_t message_parts() const override { return 2; }
-      size_t message_part_size() const override { return m_q.bytes(); }
-      size_t max_input_bits() const override { return (m_q.bits() - 1); }
-
-      secure_vector<byte> raw_sign(const byte msg[], size_t msg_len,
-                                   RandomNumberGenerator& rng) override;
-   private:
-      const BigInt& m_q;
-      const BigInt& m_x;
-      Fixed_Base_Power_Mod m_powermod_g_p;
-      Modular_Reducer m_mod_q;
-   };
-
-secure_vector<byte>
-NR_Signature_Operation::raw_sign(const byte msg[], size_t msg_len,
-                                 RandomNumberGenerator& rng)
-   {
-   rng.add_entropy(msg, msg_len);
-
-   BigInt f(msg, msg_len);
-
-   if(f >= m_q)
-      throw Invalid_Argument("NR_Signature_Operation: Input is out of range");
-
-   BigInt c, d;
-
-   while(c == 0)
-      {
-      BigInt k;
-      do
-         k.randomize(rng, m_q.bits());
-      while(k >= m_q);
-
-      c = m_mod_q.reduce(m_powermod_g_p(k) + f);
-      d = m_mod_q.reduce(k - m_x * c);
-      }
-
-   secure_vector<byte> output(2*m_q.bytes());
-   c.binary_encode(&output[output.size() / 2 - c.bytes()]);
-   d.binary_encode(&output[output.size() - d.bytes()]);
-   return output;
-   }
-
-
-/**
-* Nyberg-Rueppel verification operation
-*/
-class NR_Verification_Operation : public PK_Ops::Verification_with_EMSA
-   {
-   public:
-      typedef NR_PublicKey Key_Type;
-      NR_Verification_Operation(const NR_PublicKey& nr, const std::string& emsa) :
-         PK_Ops::Verification_with_EMSA(emsa),
-         m_q(nr.group_q()), m_y(nr.get_y()), m_powermod_g_p{Fixed_Base_Power_Mod(nr.group_g(), nr.group_p())},
-         m_powermod_y_p{Fixed_Base_Power_Mod(m_y, nr.group_p())}, m_mod_p{Modular_Reducer(nr.group_p())},
-         m_mod_q{Modular_Reducer(nr.group_q())}
-         {}
-
-      size_t message_parts() const override { return 2; }
-      size_t message_part_size() const override { return m_q.bytes(); }
-      size_t max_input_bits() const override { return (m_q.bits() - 1); }
-
-      bool with_recovery() const override { return true; }
-
-      secure_vector<byte> verify_mr(const byte msg[], size_t msg_len) override;
-   private:
-      const BigInt& m_q;
-      const BigInt& m_y;
-
-      Fixed_Base_Power_Mod m_powermod_g_p, m_powermod_y_p;
-      Modular_Reducer m_mod_p, m_mod_q;
-   };
-
-secure_vector<byte>
-NR_Verification_Operation::verify_mr(const byte msg[], size_t msg_len)
-   {
-   const BigInt& q = m_mod_q.get_modulus();
-
-   if(msg_len != 2*q.bytes())
-      throw Invalid_Argument("NR verification: Invalid signature");
-
-   BigInt c(msg, q.bytes());
-   BigInt d(msg + q.bytes(), q.bytes());
-
-   if(c.is_zero() || c >= q || d >= q)
-      throw Invalid_Argument("NR verification: Invalid signature");
-
-   auto future_y_c = std::async(std::launch::async, m_powermod_y_p, c);
-   BigInt g_d = m_powermod_g_p(d);
-
-   BigInt i = m_mod_p.multiply(g_d, future_y_c.get());
-   return BigInt::encode_locked(m_mod_q.reduce(c - i));
-   }
-}
-
-BOTAN_REGISTER_PK_SIGNATURE_OP("NR", NR_Signature_Operation);
-BOTAN_REGISTER_PK_VERIFY_OP("NR", NR_Verification_Operation);
-
-}