More pubkey doc updates

1 files changed, 61 insertions, 0 deletions

diff --git a/doc/examples/ecdsa.cpp b/doc/examples/ecdsa.cpp
new file mode 100644
index 000000000..df1e1b93a
--- /dev/null
+++ b/doc/examples/ecdsa.cpp
@@ -0,0 +1,61 @@
+/*
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/botan.h>
+#include <botan/ecdsa.h>
+#include <botan/pubkey.h>
+
+#include <memory>
+#include <iostream>
+
+using namespace Botan;
+
+int main()
+   {
+   Botan::LibraryInitializer init;
+
+   try
+      {
+      AutoSeeded_RNG rng;
+
+      EC_Domain_Params params("1.3.132.0.8");
+
+      ECDSA_PrivateKey ecdsa(rng, params);
+
+      ECDSA_PublicKey ecdsa_pub = ecdsa;
+
+      /*
+      std::cout << params.get_curve().get_p() << "\n";
+      std::cout << params.get_order() << "\n";
+      std::cout << X509::PEM_encode(ecdsa);
+      std::cout << PKCS8::PEM_encode(ecdsa);
+      */
+
+      PK_Signer signer(ecdsa, "EMSA1(SHA-256)");
+
+      const char* message = "Hello World";
+
+      signer.update((const byte*)message, strlen(message));
+
+      SecureVector<byte> sig = signer.signature(rng);
+
+      std::cout << sig.size() << "\n";
+
+      PK_Verifier verifier(ecdsa_pub, "EMSA1(SHA-256)");
+
+      verifier.update((const byte*)message, strlen(message));
+
+      bool ok = verifier.check_signature(sig);
+      if(ok)
+         std::cout << "Signature valid\n";
+      else
+         std::cout << "Bad signature\n";
+      }
+   catch(std::exception& e)
+      {
+      std::cout << e.what() << "\n";
+      }
+   }