1 files changed, 109 insertions, 0 deletions
diff --git a/src/ssl/cert_ver.cpp b/src/ssl/cert_ver.cpp
new file mode 100644
index 000000000..3ea6db685
--- /dev/null
+++ b/src/ssl/cert_ver.cpp
@@ -0,0 +1,109 @@
+/**
+* Certificate Verify Message Source File
+* (C) 2004-2006 Jack Lloyd
+*
+* Released under the terms of the Botan license
+*/
+
+#include <botan/tls_messages.h>
+#include <botan/look_pk.h>
+#include <botan/loadstor.h>
+#include <botan/rsa.h>
+#include <botan/dsa.h>
+#include <memory>
+
+namespace Botan {
+
+/**
+* Create a new Certificate Verify message
+*/
+Certificate_Verify::Certificate_Verify(RandomNumberGenerator& rng,
+                                       Record_Writer& writer,
+                                       HandshakeHash& hash,
+                                       const PKCS8_PrivateKey* priv_key)
+   {
+   const PK_Signing_Key* sign_key =
+      dynamic_cast<const PK_Signing_Key*>(priv_key);
+
+   if(sign_key)
+      {
+      PK_Signer* signer = 0;
+      try
+         {
+         if(dynamic_cast<const RSA_PrivateKey*>(sign_key))
+            signer = get_pk_signer(*sign_key, "EMSA3(TLS.Digest.0)");
+         else if(dynamic_cast<const DSA_PrivateKey*>(sign_key))
+            signer = get_pk_signer(*sign_key, "EMSA1(SHA-1)");
+         else
+            throw Invalid_Argument("Unknown PK algo for TLS signature");
+
+         signature = signer->sign_message(hash.final(), rng);
+         delete signer;
+         }
+      catch(...)
+         {
+         delete signer;
+         throw;
+         }
+
+      send(writer, hash);
+      }
+   }
+
+/**
+* Serialize a Certificate Verify message
+*/
+SecureVector<byte> Certificate_Verify::serialize() const
+   {
+   SecureVector<byte> buf;
+
+   u16bit sig_len = signature.size();
+   buf.append(get_byte(0, sig_len));
+   buf.append(get_byte(1, sig_len));
+   buf.append(signature);
+
+   return buf;
+   }
+
+/**
+* Deserialize a Certificate Verify message
+*/
+void Certificate_Verify::deserialize(const MemoryRegion<byte>& buf)
+   {
+   if(buf.size() < 2)
+      throw Decoding_Error("Certificate_Verify: Corrupted packet");
+
+   u32bit sig_len = make_u16bit(buf[0], buf[1]);
+   if(buf.size() != 2 + sig_len)
+      throw Decoding_Error("Certificate_Verify: Corrupted packet");
+
+   signature.set(buf + 2, sig_len);
+   }
+
+/**
+* Verify a Certificate Verify message
+*/
+bool Certificate_Verify::verify(const X509_Certificate& cert,
+                                HandshakeHash& hash)
+   {
+   // FIXME: duplicate of Server_Key_Exchange::verify
+
+   std::auto_ptr<X509_PublicKey> key(cert.subject_public_key());
+
+   DSA_PublicKey* dsa_pub = dynamic_cast<DSA_PublicKey*>(key.get());
+   RSA_PublicKey* rsa_pub = dynamic_cast<RSA_PublicKey*>(key.get());
+
+   std::auto_ptr<PK_Verifier> verifier;
+
+   if(dsa_pub)
+      verifier.reset(get_pk_verifier(*dsa_pub, "EMSA1(SHA-1)", DER_SEQUENCE));
+   else if(rsa_pub)
+      verifier.reset(get_pk_verifier(*rsa_pub, "EMSA3(TLS.Digest.0)"));
+   else
+      throw Invalid_Argument("Client did not provide a RSA/DSA cert");
+
+   // FIXME: WRONG
+   return verifier->verify_message(hash.final(), signature);
+   }
+
+}