1 files changed, 64 insertions, 0 deletions
diff --git a/old/botan/src/cert/cvc/ecdsa_sig.cpp b/old/botan/src/cert/cvc/ecdsa_sig.cpp
new file mode 100644
index 0000000..c33a455
--- /dev/null
+++ b/old/botan/src/cert/cvc/ecdsa_sig.cpp
@@ -0,0 +1,64 @@
+
+#include <botan/ecdsa_sig.h>
+#include <memory>
+
+namespace Botan {
+
+ECDSA_Signature::ECDSA_Signature(const BigInt& r, const BigInt& s)
+   : m_r(r),
+     m_s(s)
+   {}
+
+ECDSA_Signature::ECDSA_Signature(const ECDSA_Signature& other)
+   : m_r(other.m_r), m_s(other.m_s)
+   {}
+
+ECDSA_Signature const& ECDSA_Signature::operator=(const ECDSA_Signature& other)
+   {
+   m_r = other.m_r;
+   m_s = other.m_s;
+   return *this;
+   }
+
+bool operator==(const ECDSA_Signature& lhs, const ECDSA_Signature& rhs)
+   {
+   return (lhs.get_r() == rhs.get_r() && lhs.get_s() == rhs.get_s());
+   }
+
+SecureVector<byte> const ECDSA_Signature::get_concatenation() const
+   {
+   u32bit enc_len = m_r > m_s ? m_r.bytes() : m_s.bytes(); // use the larger
+
+   SecureVector<byte> sv_r = BigInt::encode_1363(m_r, enc_len);
+   SecureVector<byte> sv_s = BigInt::encode_1363(m_s, enc_len);
+
+   SecureVector<byte> result(sv_r);
+   result.append(sv_s);
+   return result;
+   }
+
+ECDSA_Signature const decode_seq(MemoryRegion<byte> const& seq)
+   {
+   ECDSA_Signature sig;
+
+   std::auto_ptr<ECDSA_Signature_Decoder> dec(new ECDSA_Signature_Decoder(&sig));
+   dec->signature_bits(seq);
+   return sig;
+   }
+
+ECDSA_Signature const decode_concatenation(MemoryRegion<byte> const& concat)
+   {
+   if(concat.size() % 2 != 0)
+      throw Invalid_Argument("Erroneous length of signature");
+
+   u32bit rs_len = concat.size()/2;
+   SecureVector<byte> sv_r;
+   SecureVector<byte> sv_s;
+   sv_r.set(concat.begin(), rs_len);
+   sv_s.set(&concat[rs_len], rs_len);
+   BigInt r = BigInt::decode(sv_r, sv_r.size());
+   BigInt s = BigInt::decode(sv_s, sv_s.size());
+   return ECDSA_Signature(r, s);
+   }
+
+}