RSA trapdoor function using the public key. More...

#include <rsa.h>

Inheritance diagram for RSAFunction_ISO:

Collaboration diagram for RSAFunction_ISO:

Public Member Functions
Integer	ApplyFunction (const Integer &x) const
	Applies the trapdoor. More...

Integer	PreimageBound () const
	Returns the maximum size of a message before the trapdoor function is applied. More...

Public Member Functions inherited from RSAFunction
void	Initialize (const Integer &n, const Integer &e)
	Initialize a RSA public key. More...

OID	GetAlgorithmID () const
	Retrieves the OID of the algorithm. More...

void	BERDecodePublicKey (BufferedTransformation &bt, bool parametersPresent, size_t size)
	decode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header More...

void	DEREncodePublicKey (BufferedTransformation &bt) const
	encode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header More...

bool	Validate (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value. More...

void	AssignFrom (const NameValuePairs &source)
	Assign values to this object. More...

Integer	ImageBound () const
	Returns the maximum size of a message after the trapdoor function is applied. More...

const Integer &	GetModulus () const

const Integer &	GetPublicExponent () const

void	SetModulus (const Integer &n)

void	SetPublicExponent (const Integer &e)

Public Member Functions inherited from TrapdoorFunction
virtual	~TrapdoorFunction ()

Integer	ApplyRandomizedFunction (RandomNumberGenerator &rng, const Integer &x) const
	Applies the trapdoor function. More...

bool	IsRandomized () const
	Determines if the encryption algorithm is randomized. More...

Public Member Functions inherited from RandomizedTrapdoorFunction
virtual	~RandomizedTrapdoorFunction ()

Public Member Functions inherited from TrapdoorFunctionBounds
virtual	~TrapdoorFunctionBounds ()

virtual Integer	MaxPreimage () const
	Returns the maximum size of a message before the trapdoor function is applied bound to a public key. More...

virtual Integer	MaxImage () const
	Returns the maximum size of a message after the trapdoor function is applied bound to a public key. More...

Public Member Functions inherited from X509PublicKey
virtual	~X509PublicKey ()

void	BERDecode (BufferedTransformation &bt)
	Decode this object from a BufferedTransformation. More...

void	DEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation. More...

virtual bool	BERDecodeAlgorithmParameters (BufferedTransformation &bt)

virtual bool	DEREncodeAlgorithmParameters (BufferedTransformation &bt) const

Public Member Functions inherited from ASN1CryptoMaterial< PublicKey >
void	Save (BufferedTransformation &bt) const
	DER encode ASN.1 object. More...

void	Load (BufferedTransformation &bt)
	BER decode ASN.1 object. More...

Public Member Functions inherited from ASN1Object
virtual	~ASN1Object ()

virtual void	BEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation. More...

Public Member Functions inherited from CryptoMaterial
virtual	~CryptoMaterial ()

virtual void	ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

virtual bool	SupportsPrecomputation () const
	Determines whether the object supports precomputation. More...

virtual void	Precompute (unsigned int precomputationStorage)
	Perform precomputation. More...

virtual void	LoadPrecomputation (BufferedTransformation &storedPrecomputation)
	Retrieve previously saved precomputation. More...

virtual void	SavePrecomputation (BufferedTransformation &storedPrecomputation) const
	Save precomputation for later use. More...

void	DoQuickSanityCheck () const
	Perform a quick sanity check. More...

Public Member Functions inherited from NameValuePairs
virtual	~NameValuePairs ()

template<class T >
bool	GetThisObject (T &object) const
	Get a copy of this object or subobject. More...

template<class T >
bool	GetThisPointer (T *&ptr) const
	Get a pointer to this object. More...

template<class T >
bool	GetValue (const char *name, T &value) const
	Get a named value. More...

template<class T >
T	GetValueWithDefault (const char *name, T defaultValue) const
	Get a named value. More...

CRYPTOPP_DLL std::string	GetValueNames () const
	Get a list of value names that can be retrieved. More...

CRYPTOPP_DLL bool	GetIntValue (const char *name, int &value) const
	Get a named value with type int. More...

CRYPTOPP_DLL int	GetIntValueWithDefault (const char *name, int defaultValue) const
	Get a named value with type int, with default. More...

template<class T >
void	GetRequiredParameter (const char className, const char name, T &value) const
	Retrieves a required name/value pair. More...

CRYPTOPP_DLL void	GetRequiredIntParameter (const char className, const char name, int &value) const
	Retrieves a required name/value pair. More...

Additional Inherited Members
Static Public Member Functions inherited from NameValuePairs
static CRYPTOPP_DLL void CRYPTOPP_API	ThrowIfTypeMismatch (const char *name, const std::type_info &stored, const std::type_info &retrieving)
	Ensures an expected name and type is present. More...

Protected Attributes inherited from RSAFunction
Integer	m_n

Integer	m_e

Detailed Description

RSA trapdoor function using the public key.

Since: Crypto++ 1.0

Definition at line 145 of file rsa.h.

Member Function Documentation

Integer RSAFunction_ISO::ApplyFunction ( const Integer & x ) const

virtual

Applies the trapdoor.

Parameters

x	the message on which the encryption function is applied

Returns: the message x encrypted under the public key

ApplyFunction is a generalization of encryption under a public key cryptosystem. Derived classes must implement it.

Reimplemented from RSAFunction.

Definition at line 294 of file rsa.cpp.

Here is the call graph for this function:

Integer RSAFunction_ISO::PreimageBound ( ) const

inlinevirtual

Returns the maximum size of a message before the trapdoor function is applied.

Returns: the maximum size of a message before the trapdoor function is applied

Derived classes must implement PreimageBound().

Reimplemented from RSAFunction.

Definition at line 149 of file rsa.h.

The documentation for this class was generated from the following files:

src/cryptopp/rsa.h
src/cryptopp/rsa.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation