summaryrefslogtreecommitdiffstats
path: root/CryptoPP/ecp.h
diff options
context:
space:
mode:
Diffstat (limited to 'CryptoPP/ecp.h')
-rw-r--r--CryptoPP/ecp.h126
1 files changed, 0 insertions, 126 deletions
diff --git a/CryptoPP/ecp.h b/CryptoPP/ecp.h
deleted file mode 100644
index d946be63a..000000000
--- a/CryptoPP/ecp.h
+++ /dev/null
@@ -1,126 +0,0 @@
-#ifndef CRYPTOPP_ECP_H
-#define CRYPTOPP_ECP_H
-
-#include "modarith.h"
-#include "eprecomp.h"
-#include "smartptr.h"
-#include "pubkey.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-//! Elliptical Curve Point
-struct CRYPTOPP_DLL ECPPoint
-{
- ECPPoint() : identity(true) {}
- ECPPoint(const Integer &x, const Integer &y)
- : identity(false), x(x), y(y) {}
-
- bool operator==(const ECPPoint &t) const
- {return (identity && t.identity) || (!identity && !t.identity && x==t.x && y==t.y);}
- bool operator< (const ECPPoint &t) const
- {return identity ? !t.identity : (!t.identity && (x<t.x || (x==t.x && y<t.y)));}
-
- bool identity;
- Integer x, y;
-};
-
-CRYPTOPP_DLL_TEMPLATE_CLASS AbstractGroup<ECPPoint>;
-
-//! Elliptic Curve over GF(p), where p is prime
-class CRYPTOPP_DLL ECP : public AbstractGroup<ECPPoint>
-{
-public:
- typedef ModularArithmetic Field;
- typedef Integer FieldElement;
- typedef ECPPoint Point;
-
- ECP() {}
- ECP(const ECP &ecp, bool convertToMontgomeryRepresentation = false);
- ECP(const Integer &modulus, const FieldElement &a, const FieldElement &b)
- : m_fieldPtr(new Field(modulus)), m_a(a.IsNegative() ? modulus+a : a), m_b(b) {}
- // construct from BER encoded parameters
- // this constructor will decode and extract the the fields fieldID and curve of the sequence ECParameters
- ECP(BufferedTransformation &bt);
-
- // encode the fields fieldID and curve of the sequence ECParameters
- void DEREncode(BufferedTransformation &bt) const;
-
- bool Equal(const Point &P, const Point &Q) const;
- const Point& Identity() const;
- const Point& Inverse(const Point &P) const;
- bool InversionIsFast() const {return true;}
- const Point& Add(const Point &P, const Point &Q) const;
- const Point& Double(const Point &P) const;
- Point ScalarMultiply(const Point &P, const Integer &k) const;
- Point CascadeScalarMultiply(const Point &P, const Integer &k1, const Point &Q, const Integer &k2) const;
- void SimultaneousMultiply(Point *results, const Point &base, const Integer *exponents, unsigned int exponentsCount) const;
-
- Point Multiply(const Integer &k, const Point &P) const
- {return ScalarMultiply(P, k);}
- Point CascadeMultiply(const Integer &k1, const Point &P, const Integer &k2, const Point &Q) const
- {return CascadeScalarMultiply(P, k1, Q, k2);}
-
- bool ValidateParameters(RandomNumberGenerator &rng, unsigned int level=3) const;
- bool VerifyPoint(const Point &P) const;
-
- unsigned int EncodedPointSize(bool compressed = false) const
- {return 1 + (compressed?1:2)*GetField().MaxElementByteLength();}
- // returns false if point is compressed and not valid (doesn't check if uncompressed)
- bool DecodePoint(Point &P, BufferedTransformation &bt, size_t len) const;
- bool DecodePoint(Point &P, const byte *encodedPoint, size_t len) const;
- void EncodePoint(byte *encodedPoint, const Point &P, bool compressed) const;
- void EncodePoint(BufferedTransformation &bt, const Point &P, bool compressed) const;
-
- Point BERDecodePoint(BufferedTransformation &bt) const;
- void DEREncodePoint(BufferedTransformation &bt, const Point &P, bool compressed) const;
-
- Integer FieldSize() const {return GetField().GetModulus();}
- const Field & GetField() const {return *m_fieldPtr;}
- const FieldElement & GetA() const {return m_a;}
- const FieldElement & GetB() const {return m_b;}
-
- bool operator==(const ECP &rhs) const
- {return GetField() == rhs.GetField() && m_a == rhs.m_a && m_b == rhs.m_b;}
-
-private:
- clonable_ptr<Field> m_fieldPtr;
- FieldElement m_a, m_b;
- mutable Point m_R;
-};
-
-CRYPTOPP_DLL_TEMPLATE_CLASS DL_FixedBasePrecomputationImpl<ECP::Point>;
-CRYPTOPP_DLL_TEMPLATE_CLASS DL_GroupPrecomputation<ECP::Point>;
-
-template <class T> class EcPrecomputation;
-
-//! ECP precomputation
-template<> class EcPrecomputation<ECP> : public DL_GroupPrecomputation<ECP::Point>
-{
-public:
- typedef ECP EllipticCurve;
-
- // DL_GroupPrecomputation
- bool NeedConversions() const {return true;}
- Element ConvertIn(const Element &P) const
- {return P.identity ? P : ECP::Point(m_ec->GetField().ConvertIn(P.x), m_ec->GetField().ConvertIn(P.y));};
- Element ConvertOut(const Element &P) const
- {return P.identity ? P : ECP::Point(m_ec->GetField().ConvertOut(P.x), m_ec->GetField().ConvertOut(P.y));}
- const AbstractGroup<Element> & GetGroup() const {return *m_ec;}
- Element BERDecodeElement(BufferedTransformation &bt) const {return m_ec->BERDecodePoint(bt);}
- void DEREncodeElement(BufferedTransformation &bt, const Element &v) const {m_ec->DEREncodePoint(bt, v, false);}
-
- // non-inherited
- void SetCurve(const ECP &ec)
- {
- m_ec.reset(new ECP(ec, true));
- m_ecOriginal = ec;
- }
- const ECP & GetCurve() const {return *m_ecOriginal;}
-
-private:
- value_ptr<ECP> m_ec, m_ecOriginal;
-};
-
-NAMESPACE_END
-
-#endif