Interface for crypto material, such as public and private keys, and crypto parameters. More...

#include <cryptlib.h>

Inheritance diagram for CryptoMaterial:

Collaboration diagram for CryptoMaterial:

Classes
class	InvalidMaterial
	Exception thrown when invalid crypto material is detected. More...

Public Member Functions
virtual	~CryptoMaterial ()

virtual void	AssignFrom (const NameValuePairs &source)=0
	Assign values to this object. More...

virtual bool	Validate (RandomNumberGenerator &rng, unsigned int level) const =0
	Check this object for errors. More...

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

virtual void	Save (BufferedTransformation &bt) const
	Saves a key to a BufferedTransformation. More...

virtual void	Load (BufferedTransformation &bt)
	Loads a key from a BufferedTransformation. 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...

virtual CRYPTOPP_DLL bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const =0
	Get a named value. 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...

Detailed Description

Interface for crypto material, such as public and private keys, and crypto parameters.

Definition at line 2042 of file cryptlib.h.

Constructor & Destructor Documentation

virtual CryptoMaterial::~CryptoMaterial ( )

inlinevirtual

Definition at line 2052 of file cryptlib.h.

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Member Function Documentation

virtual void CryptoMaterial::AssignFrom ( const NameValuePairs & source )

pure virtual

Assign values to this object.

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

Implemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_PublicKey_ECGDSA_ISO15946< EC >, DL_PrivateKey_ECGDSA_ISO15946< EC >, DL_GroupParameters_IntegerBasedImpl< GROUP_PRECOMP, BASE_PRECOMP >, DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC >, DL_GroupParameters_IntegerBasedImpl< ModExpPrecomputation >, InvertibleRSAFunction, InvertibleLUCFunction, InvertibleRWFunction, InvertibleESIGNFunction, InvertibleRabinFunction, DL_GroupParameters_EC< EC >, DL_GroupParameters_IntegerBased, LUCFunction, RWFunction, RSAFunction, RabinFunction, ESIGNFunction, and XTR_DH.

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void CryptoMaterial::DoQuickSanityCheck ( ) const

inline

Perform a quick sanity check.

DoQuickSanityCheck() is for internal library use, and it should not be called by library users.

Definition at line 2145 of file cryptlib.h.

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virtual void CryptoMaterial::Load ( BufferedTransformation & bt )

inlinevirtual

Loads a key from a BufferedTransformation.

Parameters

bt	the source BufferedTransformation

Exceptions

KeyingErr

Load() attempts to read material from a BufferedTransformation. If the material is a key that was generated outside the library, then the following usually applies:

the key should be ASN.1 BER encoded
the key should be a "key info"

"key info" means the key should have an object identifier with an algorthm id, like a subjectPublicKeyInfo.

To read a "raw" key without the "key info", then call the key's BERDecode() method.

Note: Load generally does not check that the key is valid. Call Validate(), if needed.

Reimplemented in ASN1CryptoMaterial< PrivateKey >, ASN1CryptoMaterial< DL_GroupParameters< Integer > >, ASN1CryptoMaterial< PublicKey >, InvertibleRSAFunction, InvertibleRWFunction, and RWFunction.

Definition at line 2109 of file cryptlib.h.

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virtual void CryptoMaterial::LoadPrecomputation ( BufferedTransformation & storedPrecomputation )

inlinevirtual

Retrieve previously saved precomputation.

Parameters

storedPrecomputation BufferedTransformation with the saved precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Reimplemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_GroupParameters< T >, DL_GroupParameters< Integer >, DL_GroupParameters< typename EcPrecomputation< EC >::Element >, and InvertibleRWFunction.

Definition at line 2134 of file cryptlib.h.

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virtual void CryptoMaterial::Precompute ( unsigned int precomputationStorage )

inlinevirtual

Perform precomputation.

Parameters

precomputationStorage the suggested number of objects for the precompute table

Exceptions

NotImplemented

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

If a derived class does not override Precompute(), then the base class throws NotImplemented.

See also: SupportsPrecomputation(), LoadPrecomputation(), SavePrecomputation()

Reimplemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_GroupParameters< T >, DL_GroupParameters< Integer >, DL_GroupParameters< typename EcPrecomputation< EC >::Element >, and InvertibleRWFunction.

Definition at line 2125 of file cryptlib.h.

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virtual void CryptoMaterial::Save ( BufferedTransformation & bt ) const

inlinevirtual

Saves a key to a BufferedTransformation.

Parameters

bt	the destination BufferedTransformation

Exceptions

NotImplemented

Save() writes the material to a BufferedTransformation.

If the material is a key, then the key is written with ASN.1 DER encoding. The key includes an object identifier with an algorthm id, like a subjectPublicKeyInfo.

A "raw" key without the "key info" can be saved using a key's DEREncode() method.

If a derived class does not override Save(), then the base class throws NotImplemented().

Reimplemented in ASN1CryptoMaterial< PrivateKey >, ASN1CryptoMaterial< DL_GroupParameters< Integer > >, ASN1CryptoMaterial< PublicKey >, InvertibleRSAFunction, InvertibleRWFunction, and RWFunction.

Definition at line 2092 of file cryptlib.h.

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virtual void CryptoMaterial::SavePrecomputation ( BufferedTransformation & storedPrecomputation ) const

inlinevirtual

Save precomputation for later use.

Parameters

storedPrecomputation BufferedTransformation to write the precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Reimplemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_GroupParameters< T >, DL_GroupParameters< Integer >, DL_GroupParameters< typename EcPrecomputation< EC >::Element >, and InvertibleRWFunction.

Definition at line 2140 of file cryptlib.h.

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virtual bool CryptoMaterial::SupportsPrecomputation ( ) const

inlinevirtual

Determines whether the object supports precomputation.

Returns: true if the object supports precomputation, false otherwise

See also: Precompute()

Reimplemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_GroupParameters< T >, DL_GroupParameters< Integer >, DL_GroupParameters< typename EcPrecomputation< EC >::Element >, and InvertibleRWFunction.

Definition at line 2115 of file cryptlib.h.

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virtual void CryptoMaterial::ThrowIfInvalid	(	RandomNumberGenerator &	rng,
		unsigned int	level
	)		const

inlinevirtual

Check this object for errors.

Parameters

rng	a RandomNumberGenerator for objects which use randomized testing
level	the level of thoroughness

Exceptions

InvalidMaterial

Internally, ThrowIfInvalid() calls Validate() and throws InvalidMaterial() if validation fails.

See also: Validate()

Definition at line 2080 of file cryptlib.h.

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virtual bool CryptoMaterial::Validate	(	RandomNumberGenerator &	rng,
		unsigned int	level
	)		const

pure virtual

Check this object for errors.

Parameters

rng	a RandomNumberGenerator for objects which use randomized testing
level	the level of thoroughness

Returns: true if the tests succeed, false otherwise

There are four levels of thoroughness:

0 - using this object won't cause a crash or exception
1 - this object will probably function, and encrypt, sign, other operations correctly
2 - ensure this object will function correctly, and perform reasonable security checks
3 - perform reasonable security checks, and do checks that may take a long time

Level 0 does not require a RandomNumberGenerator. A NullRNG() can be used for level 0. Level 1 may not check for weak keys and such. Levels 2 and 3 are recommended.

See also: ThrowIfInvalid()

Implemented in DL_PublicKeyImpl< GP >, DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >, DL_PrivateKeyImpl< GP >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, DL_GroupParameters< T >, DL_GroupParameters< Integer >, DL_GroupParameters< typename EcPrecomputation< EC >::Element >, InvertibleRSAFunction, InvertibleLUCFunction, InvertibleRWFunction, InvertibleESIGNFunction, InvertibleRabinFunction, LUCFunction, RWFunction, RSAFunction, RabinFunction, ESIGNFunction, and XTR_DH.

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

src/cryptopp/cryptlib.h

Classes

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation