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diff --git a/lib/cryptopp/eccrypto.h b/lib/cryptopp/eccrypto.h
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+++ b/lib/cryptopp/eccrypto.h
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+#ifndef CRYPTOPP_ECCRYPTO_H
+#define CRYPTOPP_ECCRYPTO_H
+
+/*! \file
+*/
+
+#include "pubkey.h"
+#include "integer.h"
+#include "asn.h"
+#include "hmac.h"
+#include "sha.h"
+#include "gfpcrypt.h"
+#include "dh.h"
+#include "mqv.h"
+#include "ecp.h"
+#include "ec2n.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! Elliptic Curve Parameters
+/*! This class corresponds to the ASN.1 sequence of the same name
+    in ANSI X9.62 (also SEC 1).
+*/
+template <class EC>
+class DL_GroupParameters_EC : public DL_GroupParametersImpl<EcPrecomputation<EC> >
+{
+	typedef DL_GroupParameters_EC<EC> ThisClass;
+
+public:
+	typedef EC EllipticCurve;
+	typedef typename EllipticCurve::Point Point;
+	typedef Point Element;
+	typedef IncompatibleCofactorMultiplication DefaultCofactorOption;
+
+	DL_GroupParameters_EC() : m_compress(false), m_encodeAsOID(false) {}
+	DL_GroupParameters_EC(const OID &oid)
+		: m_compress(false), m_encodeAsOID(false) {Initialize(oid);}
+	DL_GroupParameters_EC(const EllipticCurve &ec, const Point &G, const Integer &n, const Integer &k = Integer::Zero())
+		: m_compress(false), m_encodeAsOID(false) {Initialize(ec, G, n, k);}
+	DL_GroupParameters_EC(BufferedTransformation &bt)
+		: m_compress(false), m_encodeAsOID(false) {BERDecode(bt);}
+
+	void Initialize(const EllipticCurve &ec, const Point &G, const Integer &n, const Integer &k = Integer::Zero())
+	{
+		this->m_groupPrecomputation.SetCurve(ec);
+		this->SetSubgroupGenerator(G);
+		m_n = n;
+		m_k = k;
+	}
+	void Initialize(const OID &oid);
+
+	// NameValuePairs
+	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
+	void AssignFrom(const NameValuePairs &source);
+
+	// GeneratibleCryptoMaterial interface
+	//! this implementation doesn't actually generate a curve, it just initializes the parameters with existing values
+	/*! parameters: (Curve, SubgroupGenerator, SubgroupOrder, Cofactor (optional)), or (GroupOID) */
+	void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg);
+
+	// DL_GroupParameters
+	const DL_FixedBasePrecomputation<Element> & GetBasePrecomputation() const {return this->m_gpc;}
+	DL_FixedBasePrecomputation<Element> & AccessBasePrecomputation() {return this->m_gpc;}
+	const Integer & GetSubgroupOrder() const {return m_n;}
+	Integer GetCofactor() const;
+	bool ValidateGroup(RandomNumberGenerator &rng, unsigned int level) const;
+	bool ValidateElement(unsigned int level, const Element &element, const DL_FixedBasePrecomputation<Element> *precomp) const;
+	bool FastSubgroupCheckAvailable() const {return false;}
+	void EncodeElement(bool reversible, const Element &element, byte *encoded) const
+	{
+		if (reversible)
+			GetCurve().EncodePoint(encoded, element, m_compress);
+		else
+			element.x.Encode(encoded, GetEncodedElementSize(false));
+	}
+	unsigned int GetEncodedElementSize(bool reversible) const
+	{
+		if (reversible)
+			return GetCurve().EncodedPointSize(m_compress);
+		else
+			return GetCurve().GetField().MaxElementByteLength();
+	}
+	Element DecodeElement(const byte *encoded, bool checkForGroupMembership) const
+	{
+		Point result;
+		if (!GetCurve().DecodePoint(result, encoded, GetEncodedElementSize(true)))
+			throw DL_BadElement();
+		if (checkForGroupMembership && !ValidateElement(1, result, NULL))
+			throw DL_BadElement();
+		return result;
+	}
+	Integer ConvertElementToInteger(const Element &element) const;
+	Integer GetMaxExponent() const {return GetSubgroupOrder()-1;}
+	bool IsIdentity(const Element &element) const {return element.identity;}
+	void SimultaneousExponentiate(Element *results, const Element &base, const Integer *exponents, unsigned int exponentsCount) const;
+	static std::string CRYPTOPP_API StaticAlgorithmNamePrefix() {return "EC";}
+
+	// ASN1Key
+	OID GetAlgorithmID() const;
+
+	// used by MQV
+	Element MultiplyElements(const Element &a, const Element &b) const;
+	Element CascadeExponentiate(const Element &element1, const Integer &exponent1, const Element &element2, const Integer &exponent2) const;
+
+	// non-inherited
+
+	// enumerate OIDs for recommended parameters, use OID() to get first one
+	static OID CRYPTOPP_API GetNextRecommendedParametersOID(const OID &oid);
+
+	void BERDecode(BufferedTransformation &bt);
+	void DEREncode(BufferedTransformation &bt) const;
+
+	void SetPointCompression(bool compress) {m_compress = compress;}
+	bool GetPointCompression() const {return m_compress;}
+
+	void SetEncodeAsOID(bool encodeAsOID) {m_encodeAsOID = encodeAsOID;}
+	bool GetEncodeAsOID() const {return m_encodeAsOID;}
+
+	const EllipticCurve& GetCurve() const {return this->m_groupPrecomputation.GetCurve();}
+
+	bool operator==(const ThisClass &rhs) const
+		{return this->m_groupPrecomputation.GetCurve() == rhs.m_groupPrecomputation.GetCurve() && this->m_gpc.GetBase(this->m_groupPrecomputation) == rhs.m_gpc.GetBase(rhs.m_groupPrecomputation);}
+
+#ifdef CRYPTOPP_MAINTAIN_BACKWARDS_COMPATIBILITY
+	const Point& GetBasePoint() const {return GetSubgroupGenerator();}
+	const Integer& GetBasePointOrder() const {return GetSubgroupOrder();}
+	void LoadRecommendedParameters(const OID &oid) {Initialize(oid);}
+#endif
+
+protected:
+	unsigned int FieldElementLength() const {return GetCurve().GetField().MaxElementByteLength();}
+	unsigned int ExponentLength() const {return m_n.ByteCount();}
+
+	OID m_oid;			// set if parameters loaded from a recommended curve
+	Integer m_n;		// order of base point
+	bool m_compress, m_encodeAsOID;
+	mutable Integer m_k;		// cofactor
+};
+
+//! EC public key
+template <class EC>
+class DL_PublicKey_EC : public DL_PublicKeyImpl<DL_GroupParameters_EC<EC> >
+{
+public:
+	typedef typename EC::Point Element;
+
+	void Initialize(const DL_GroupParameters_EC<EC> &params, const Element &Q)
+		{this->AccessGroupParameters() = params; this->SetPublicElement(Q);}
+	void Initialize(const EC &ec, const Element &G, const Integer &n, const Element &Q)
+		{this->AccessGroupParameters().Initialize(ec, G, n); this->SetPublicElement(Q);}
+
+	// X509PublicKey
+	void BERDecodePublicKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
+	void DEREncodePublicKey(BufferedTransformation &bt) const;
+};
+
+//! EC private key
+template <class EC>
+class DL_PrivateKey_EC : public DL_PrivateKeyImpl<DL_GroupParameters_EC<EC> >
+{
+public:
+	typedef typename EC::Point Element;
+
+	void Initialize(const DL_GroupParameters_EC<EC> &params, const Integer &x)
+		{this->AccessGroupParameters() = params; this->SetPrivateExponent(x);}
+	void Initialize(const EC &ec, const Element &G, const Integer &n, const Integer &x)
+		{this->AccessGroupParameters().Initialize(ec, G, n); this->SetPrivateExponent(x);}
+	void Initialize(RandomNumberGenerator &rng, const DL_GroupParameters_EC<EC> &params)
+		{this->GenerateRandom(rng, params);}
+	void Initialize(RandomNumberGenerator &rng, const EC &ec, const Element &G, const Integer &n)
+		{this->GenerateRandom(rng, DL_GroupParameters_EC<EC>(ec, G, n));}
+
+	// PKCS8PrivateKey
+	void BERDecodePrivateKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
+	void DEREncodePrivateKey(BufferedTransformation &bt) const;
+};
+
+//! Elliptic Curve Diffie-Hellman, AKA <a href="http://www.weidai.com/scan-mirror/ka.html#ECDH">ECDH</a>
+template <class EC, class COFACTOR_OPTION = CPP_TYPENAME DL_GroupParameters_EC<EC>::DefaultCofactorOption>
+struct ECDH
+{
+	typedef DH_Domain<DL_GroupParameters_EC<EC>, COFACTOR_OPTION> Domain;
+};
+
+/// Elliptic Curve Menezes-Qu-Vanstone, AKA <a href="http://www.weidai.com/scan-mirror/ka.html#ECMQV">ECMQV</a>
+template <class EC, class COFACTOR_OPTION = CPP_TYPENAME DL_GroupParameters_EC<EC>::DefaultCofactorOption>
+struct ECMQV
+{
+	typedef MQV_Domain<DL_GroupParameters_EC<EC>, COFACTOR_OPTION> Domain;
+};
+
+//! EC keys
+template <class EC>
+struct DL_Keys_EC
+{
+	typedef DL_PublicKey_EC<EC> PublicKey;
+	typedef DL_PrivateKey_EC<EC> PrivateKey;
+};
+
+template <class EC, class H>
+struct ECDSA;
+
+//! ECDSA keys
+template <class EC>
+struct DL_Keys_ECDSA
+{
+	typedef DL_PublicKey_EC<EC> PublicKey;
+	typedef DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC>, ECDSA<EC, SHA256> > PrivateKey;
+};
+
+//! ECDSA algorithm
+template <class EC>
+class DL_Algorithm_ECDSA : public DL_Algorithm_GDSA<typename EC::Point>
+{
+public:
+	static const char * CRYPTOPP_API StaticAlgorithmName() {return "ECDSA";}
+};
+
+//! ECNR algorithm
+template <class EC>
+class DL_Algorithm_ECNR : public DL_Algorithm_NR<typename EC::Point>
+{
+public:
+	static const char * CRYPTOPP_API StaticAlgorithmName() {return "ECNR";}
+};
+
+//! <a href="http://www.weidai.com/scan-mirror/sig.html#ECDSA">ECDSA</a>
+template <class EC, class H>
+struct ECDSA : public DL_SS<DL_Keys_ECDSA<EC>, DL_Algorithm_ECDSA<EC>, DL_SignatureMessageEncodingMethod_DSA, H>
+{
+};
+
+//! ECNR
+template <class EC, class H = SHA>
+struct ECNR : public DL_SS<DL_Keys_EC<EC>, DL_Algorithm_ECNR<EC>, DL_SignatureMessageEncodingMethod_NR, H>
+{
+};
+
+//! Elliptic Curve Integrated Encryption Scheme, AKA <a href="http://www.weidai.com/scan-mirror/ca.html#ECIES">ECIES</a>
+/*! Default to (NoCofactorMultiplication and DHAES_MODE = false) for compatibilty with SEC1 and Crypto++ 4.2.
+	The combination of (IncompatibleCofactorMultiplication and DHAES_MODE = true) is recommended for best
+	efficiency and security. */
+template <class EC, class COFACTOR_OPTION = NoCofactorMultiplication, bool DHAES_MODE = false>
+struct ECIES
+	: public DL_ES<
+		DL_Keys_EC<EC>,
+		DL_KeyAgreementAlgorithm_DH<typename EC::Point, COFACTOR_OPTION>,
+		DL_KeyDerivationAlgorithm_P1363<typename EC::Point, DHAES_MODE, P1363_KDF2<SHA1> >,
+		DL_EncryptionAlgorithm_Xor<HMAC<SHA1>, DHAES_MODE>,
+		ECIES<EC> >
+{
+	static std::string CRYPTOPP_API StaticAlgorithmName() {return "ECIES";}	// TODO: fix this after name is standardized
+};
+
+NAMESPACE_END
+
+#ifdef CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES
+#include "eccrypto.cpp"
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_GroupParameters_EC<ECP>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_GroupParameters_EC<EC2N>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PublicKeyImpl<DL_GroupParameters_EC<ECP> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PublicKeyImpl<DL_GroupParameters_EC<EC2N> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PublicKey_EC<ECP>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PublicKey_EC<EC2N>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKeyImpl<DL_GroupParameters_EC<ECP> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKeyImpl<DL_GroupParameters_EC<EC2N> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_EC<ECP>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_EC<EC2N>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_Algorithm_GDSA<ECP::Point>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_Algorithm_GDSA<EC2N::Point>;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<ECP>, ECDSA<ECP, SHA256> >;
+CRYPTOPP_DLL_TEMPLATE_CLASS DL_PrivateKey_WithSignaturePairwiseConsistencyTest<DL_PrivateKey_EC<EC2N>, ECDSA<EC2N, SHA256> >;
+
+NAMESPACE_END
+
+#endif