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

Inheritance diagram for CryptoMaterial:

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

Public Member Functions
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
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...

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

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

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...

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

virtual 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 void	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 2050 of file cryptlib.h.

Member Function Documentation

◆ AssignFrom()

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

◆ Validate()

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 XTR_DH, InvertibleRWFunction, RWFunction, InvertibleRSAFunction, RSAFunction, InvertibleRabinFunction, RabinFunction, 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 GROUP_PRECOMP::Element >, InvertibleLUCFunction, LUCFunction, InvertibleESIGNFunction, and ESIGNFunction.

◆ ThrowIfInvalid()

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 2090 of file cryptlib.h.

◆ Save()

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

Definition at line 2102 of file cryptlib.h.

◆ Load()

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

Definition at line 2119 of file cryptlib.h.

◆ SupportsPrecomputation()

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 InvertibleRWFunction, DL_PublicKeyImpl< GP >, DL_PrivateKeyImpl< GP >, and DL_GroupParameters< T >.

Definition at line 2125 of file cryptlib.h.

◆ Precompute()

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.