/usr/include/crypto++/eccrypto.h is in libcrypto++-dev 5.6.1-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | #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> ¶ms, 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> ¶ms, 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> ¶ms)
{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
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