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InvertibleESIGNFunction Class Reference

#include <esign.h>

Inheritance diagram for InvertibleESIGNFunction:

ESIGNFunction RandomizedTrapdoorFunctionInverse PrivateKey TrapdoorFunction PublicKey ASN1CryptoMaterial GeneratableCryptoMaterial RandomizedTrapdoorFunction CryptoMaterial ASN1Object CryptoMaterial CryptoMaterial TrapdoorFunctionBounds NameValuePairs NameValuePairs NameValuePairs List of all members.

Detailed Description

_

Definition at line 51 of file esign.h.

Public Member Functions

void Initialize (const Integer &n, const Integer &e, const Integer &p, const Integer &q)
void Initialize (RandomNumberGenerator &rng, unsigned int modulusBits)
void BERDecode (BufferedTransformation &bt)
 decode this object from a BufferedTransformation, using BER (Basic Encoding Rules)
void DEREncode (BufferedTransformation &bt) const
 encode this object into a BufferedTransformation, using DER (Distinguished Encoding Rules)
Integer CalculateRandomizedInverse (RandomNumberGenerator &rng, const Integer &x) const
bool Validate (RandomNumberGenerator &rng, unsigned int level) const
 check this object for errors
bool GetVoidValue (const char *name, const std::type_info &valueType, void *pValue) const
 to be implemented by derived classes, users should use one of the above functions instead
void AssignFrom (const NameValuePairs &source)
 assign values from source to this object
void GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs &alg)
const IntegerGetPrime1 () const
const IntegerGetPrime2 () const
void SetPrime1 (const Integer &p)
void SetPrime2 (const Integer &q)
void Initialize (const Integer &n, const Integer &e)
Integer ApplyFunction (const Integer &x) const
Integer PreimageBound () const
Integer ImageBound () const
const IntegerGetModulus () const
const IntegerGetPublicExponent () const
void SetModulus (const Integer &n)
void SetPublicExponent (const Integer &e)
Integer ApplyRandomizedFunction (RandomNumberGenerator &rng, const Integer &x) const
bool IsRandomized () const
virtual Integer MaxPreimage () const
virtual Integer MaxImage () const
virtual void ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
 throws InvalidMaterial if this object fails Validate() test
virtual void Save (BufferedTransformation &bt) const
 save key into a BufferedTransformation
void Save (BufferedTransformation &bt) const
 save key into a BufferedTransformation
virtual void Load (BufferedTransformation &bt)
 load key from a BufferedTransformation
void Load (BufferedTransformation &bt)
 load key from a BufferedTransformation
virtual bool SupportsPrecomputation () const
 whether this object supports precomputation
virtual void Precompute (unsigned int n)
 do precomputation
virtual void LoadPrecomputation (BufferedTransformation &storedPrecomputation)
 retrieve previously saved precomputation
virtual void SavePrecomputation (BufferedTransformation &storedPrecomputation) const
 save precomputation for later use
void DoQuickSanityCheck () const
template<class T> bool GetThisObject (T &object) const
 get a copy of this object or a subobject of it
template<class T> bool GetThisPointer (T *&p) const
 get a pointer to this object, as a pointer to T
template<class T> bool GetValue (const char *name, T &value) const
 get a named value, returns true if the name exists
template<class T> T GetValueWithDefault (const char *name, T defaultValue) const
 get a named value, returns the default if the name doesn't exist
std::string GetValueNames () const
 get a list of value names that can be retrieved
bool GetIntValue (const char *name, int &value) const
 get a named value with type int
int GetIntValueWithDefault (const char *name, int defaultValue) const
 get a named value with type int, with default
template<class T> void GetRequiredParameter (const char *className, const char *name, T &value) const
void GetRequiredIntParameter (const char *className, const char *name, int &value) const
virtual void BEREncode (BufferedTransformation &bt) const
 encode this object into a BufferedTransformation, using BER
virtual bool IsRandomized () const
void GenerateRandomWithKeySize (RandomNumberGenerator &rng, unsigned int keySize)
 calls the above function with a NameValuePairs object that just specifies "KeySize"

Static Public Member Functions

void ThrowIfTypeMismatch (const char *name, const std::type_info &stored, const std::type_info &retrieving)
 used by derived classes to check for type mismatch

Protected Member Functions

unsigned int GetK () const

Protected Attributes

Integer m_p
Integer m_q
Integer m_n
Integer m_e


Member Function Documentation

bool InvertibleESIGNFunction::Validate RandomNumberGenerator rng,
unsigned int  level
const [virtual]
 

check this object for errors

Parameters:
level denotes the level of thoroughness: 0 - using this object won't cause a crash or exception (rng is ignored) 1 - this object will probably function (encrypt, sign, etc.) correctly (but may not check for weak keys and such) 2 - make sure this object will function correctly, and do reasonable security checks 3 - do checks that may take a long time
Returns:
true if the tests pass

Reimplemented from ESIGNFunction.

Definition at line 181 of file esign.cpp.

References Integer::IsOdd(), Integer::One(), and ESIGNFunction::Validate().

void InvertibleESIGNFunction::AssignFrom const NameValuePairs source  )  [virtual]
 

assign values from source to this object

Note:
This function can be used to create a public key from a private key.

Reimplemented from ESIGNFunction.

Definition at line 202 of file esign.cpp.

void InvertibleESIGNFunction::GenerateRandom RandomNumberGenerator rng,
const NameValuePairs alg
[virtual]
 

parameters: (ModulusSize)

Reimplemented from GeneratableCryptoMaterial.

Definition at line 75 of file esign.cpp.

References ConstByteArrayParameter::begin(), Integer::BitCount(), Integer::GenerateRandom(), NameValuePairs::GetIntValue(), NameValuePairs::GetValue(), NameValuePairs::GetValueWithDefault(), Integer::Power2(), SecBlock< T, A >::resize(), and ConstByteArrayParameter::size().

virtual void CryptoMaterial::Load BufferedTransformation bt  )  [inline, virtual, inherited]
 

load key from a BufferedTransformation

Exceptions:
KeyingErr if decode fails
Note:
Generally does not check that the key is valid. Call ValidateKey() or ThrowIfInvalidKey() to check that.

Reimplemented in ASN1CryptoMaterial.

Definition at line 999 of file cryptlib.h.

void ASN1CryptoMaterial::Load BufferedTransformation bt  )  [inline, virtual, inherited]
 

load key from a BufferedTransformation

Exceptions:
KeyingErr if decode fails
Note:
Generally does not check that the key is valid. Call ValidateKey() or ThrowIfInvalidKey() to check that.

Reimplemented from CryptoMaterial.

Definition at line 52 of file simple.h.

References ASN1Object::BERDecode().

virtual void CryptoMaterial::Precompute unsigned int  n  )  [inline, virtual, inherited]
 

do precomputation

The exact semantics of Precompute() is varies, but typically it means calculate a table of n objects that can be used later to speed up computation.

Reimplemented in DL_GroupParameters< T >, DL_PrivateKeyImpl< GP >, DL_PublicKeyImpl< GP >, DL_GroupParameters< Integer >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, and DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >.

Definition at line 1008 of file cryptlib.h.

bool NameValuePairs::GetIntValue const char *  name,
int &  value
const [inline, inherited]
 

get a named value with type int

used to ensure we don't accidentally try to get an unsigned int or some other type when we mean int (which is the most common case) Definition at line 283 of file cryptlib.h.

Referenced by InvertibleRWFunction::GenerateRandom(), InvertibleRSAFunction::GenerateRandom(), InvertibleRabinFunction::GenerateRandom(), InvertibleLUCFunction::GenerateRandom(), DL_GroupParameters_IntegerBased::GenerateRandom(), DL_GroupParameters_DSA::GenerateRandom(), and GenerateRandom().

virtual void ASN1Object::BEREncode BufferedTransformation bt  )  const [inline, virtual, inherited]
 

encode this object into a BufferedTransformation, using BER

this may be useful if DEREncode() would be too inefficient Definition at line 1566 of file cryptlib.h.

Referenced by ASN1CryptoMaterial::Save().


The documentation for this class was generated from the following files:
Generated on Fri Aug 27 13:42:57 2004 for Crypto++ by doxygen 1.3.8