From 3438e5d3ddf8444f0e31009ffbe8237ef3752c22 Mon Sep 17 00:00:00 2001
From: Alexander Harkness <bearbin@gmail.com>
Date: Sun, 24 Nov 2013 14:21:13 +0000
Subject: move cryptopp into lib

---
 lib/cryptopp/seal.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 lib/cryptopp/seal.h

(limited to 'lib/cryptopp/seal.h')

diff --git a/lib/cryptopp/seal.h b/lib/cryptopp/seal.h
new file mode 100644
index 000000000..e14ae1caf
--- /dev/null
+++ b/lib/cryptopp/seal.h
@@ -0,0 +1,44 @@
+#ifndef CRYPTOPP_SEAL_H
+#define CRYPTOPP_SEAL_H
+
+#include "strciphr.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! _
+template <class B = BigEndian>
+struct SEAL_Info : public FixedKeyLength<20, SimpleKeyingInterface::INTERNALLY_GENERATED_IV, 4>
+{
+	static const char *StaticAlgorithmName() {return B::ToEnum() == LITTLE_ENDIAN_ORDER ? "SEAL-3.0-LE" : "SEAL-3.0-BE";}
+};
+
+template <class B = BigEndian>
+class CRYPTOPP_NO_VTABLE SEAL_Policy : public AdditiveCipherConcretePolicy<word32, 256>, public SEAL_Info<B>
+{
+protected:
+	void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
+	void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
+	void CipherResynchronize(byte *keystreamBuffer, const byte *IV, size_t length);
+	bool CipherIsRandomAccess() const {return true;}
+	void SeekToIteration(lword iterationCount);
+
+private:
+	FixedSizeSecBlock<word32, 512> m_T;
+	FixedSizeSecBlock<word32, 256> m_S;
+	SecBlock<word32> m_R;
+
+	word32 m_startCount, m_iterationsPerCount;
+	word32 m_outsideCounter, m_insideCounter;
+};
+
+//! <a href="http://www.weidai.com/scan-mirror/cs.html#SEAL-3.0-BE">SEAL</a>
+template <class B = BigEndian>
+struct SEAL : public SEAL_Info<B>, public SymmetricCipherDocumentation
+{
+	typedef SymmetricCipherFinal<ConcretePolicyHolder<SEAL_Policy<B>, AdditiveCipherTemplate<> >, SEAL_Info<B> > Encryption;
+	typedef Encryption Decryption;
+};
+
+NAMESPACE_END
+
+#endif
-- 
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