Move lib into src

1 files changed, 91 insertions, 0 deletions

diff --git a/src/lib/pubkey/dl_algo/dl_algo.cpp b/src/lib/pubkey/dl_algo/dl_algo.cpp
new file mode 100644
index 000000000..92c78ac79
--- /dev/null
+++ b/src/lib/pubkey/dl_algo/dl_algo.cpp
@@ -0,0 +1,91 @@
+/*
+* DL Scheme
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/dl_algo.h>
+#include <botan/numthry.h>
+#include <botan/workfactor.h>
+#include <botan/der_enc.h>
+#include <botan/ber_dec.h>
+
+namespace Botan {
+
+size_t DL_Scheme_PublicKey::estimated_strength() const
+   {
+   return dl_work_factor(group.get_p().bits());
+   }
+
+AlgorithmIdentifier DL_Scheme_PublicKey::algorithm_identifier() const
+   {
+   return AlgorithmIdentifier(get_oid(),
+                              group.DER_encode(group_format()));
+   }
+
+std::vector<byte> DL_Scheme_PublicKey::x509_subject_public_key() const
+   {
+   return DER_Encoder().encode(y).get_contents_unlocked();
+   }
+
+DL_Scheme_PublicKey::DL_Scheme_PublicKey(const AlgorithmIdentifier& alg_id,
+                                         const secure_vector<byte>& key_bits,
+                                         DL_Group::Format format)
+   {
+   group.BER_decode(alg_id.parameters, format);
+
+   BER_Decoder(key_bits).decode(y);
+   }
+
+secure_vector<byte> DL_Scheme_PrivateKey::pkcs8_private_key() const
+   {
+   return DER_Encoder().encode(x).get_contents();
+   }
+
+DL_Scheme_PrivateKey::DL_Scheme_PrivateKey(const AlgorithmIdentifier& alg_id,
+                                           const secure_vector<byte>& key_bits,
+                                           DL_Group::Format format)
+   {
+   group.BER_decode(alg_id.parameters, format);
+
+   BER_Decoder(key_bits).decode(x);
+   }
+
+/*
+* Check Public DL Parameters
+*/
+bool DL_Scheme_PublicKey::check_key(RandomNumberGenerator& rng,
+                                    bool strong) const
+   {
+   if(y < 2 || y >= group_p())
+      return false;
+   if(!group.verify_group(rng, strong))
+      return false;
+   return true;
+   }
+
+/*
+* Check DL Scheme Private Parameters
+*/
+bool DL_Scheme_PrivateKey::check_key(RandomNumberGenerator& rng,
+                                     bool strong) const
+   {
+   const BigInt& p = group_p();
+   const BigInt& g = group_g();
+
+   if(y < 2 || y >= p || x < 2 || x >= p)
+      return false;
+   if(!group.verify_group(rng, strong))
+      return false;
+
+   if(!strong)
+      return true;
+
+   if(y != power_mod(g, x, p))
+      return false;
+
+   return true;
+   }
+
+}