Crypto++  5.6.3
Free C++ class library of cryptographic schemes
Public Types | Public Member Functions | List of all members
DL_PublicKeyImpl< GP > Class Template Reference

_ More...

+ Inheritance diagram for DL_PublicKeyImpl< GP >:

Public Types

typedef GP::Element Element
 
- Public Types inherited from DL_PublicKey< GP::Element >
typedef GP::Element Element
 
- Public Types inherited from DL_KeyImpl< X509PublicKey, GP >
typedef GP GroupParameters
 

Public Member Functions

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...
 
bool SupportsPrecomputation () const
 Determines whether the object supports precomputation. More...
 
void Precompute (unsigned int precomputationStorage=16)
 Perform precomputation. More...
 
void LoadPrecomputation (BufferedTransformation &storedPrecomputation)
 Retrieve previously saved precomputation. More...
 
void SavePrecomputation (BufferedTransformation &storedPrecomputation) const
 Save precomputation for later use. More...
 
const DL_GroupParameters< Element > & GetAbstractGroupParameters () const
 Retrieves abstract group parameters. More...
 
DL_GroupParameters< Element > & AccessAbstractGroupParameters ()
 Retrieves abstract group parameters. More...
 
const DL_FixedBasePrecomputation< Element > & GetPublicPrecomputation () const
 
DL_FixedBasePrecomputation< Element > & AccessPublicPrecomputation ()
 
bool operator== (const DL_PublicKeyImpl< GP > &rhs) const
 
- Public Member Functions inherited from DL_PublicKey< GP::Element >
bool GetVoidValue (const char *name, const std::type_info &valueType, void *pValue) const
 
void AssignFrom (const NameValuePairs &source)
 
virtual const Element & GetPublicElement () const
 
virtual void SetPublicElement (const Element &y)
 
virtual Element ExponentiatePublicElement (const Integer &exponent) const
 
virtual Element CascadeExponentiateBaseAndPublicElement (const Integer &baseExp, const Integer &publicExp) const
 
- Public Member Functions inherited from DL_KeyImpl< X509PublicKey, GP >
OID GetAlgorithmID () const
 
bool BERDecodeAlgorithmParameters (BufferedTransformation &bt)
 
bool DEREncodeAlgorithmParameters (BufferedTransformation &bt) const
 
const GP & GetGroupParameters () const
 
GP & AccessGroupParameters ()
 
- Public Member Functions inherited from 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 void BERDecodePublicKey (BufferedTransformation &bt, bool parametersPresent, size_t size)=0
 decode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header
 
virtual void DEREncodePublicKey (BufferedTransformation &bt) const =0
 encode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header
 
- Public Member Functions inherited from ASN1CryptoMaterial< PublicKey >
void Save (BufferedTransformation &bt) const
 
void Load (BufferedTransformation &bt)
 
- Public Member Functions inherited from ASN1Object
virtual void BEREncode (BufferedTransformation &bt) const
 Encode this object into a BufferedTransformation. More...
 
- Public Member Functions inherited from CryptoMaterial
virtual void ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
 Check this object for errors. 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 >
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...
 

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

template<class GP>
class DL_PublicKeyImpl< GP >

_

Definition at line 1213 of file pubkey.h.

Member Function Documentation

template<class GP>
bool DL_PublicKeyImpl< GP >::Validate ( RandomNumberGenerator rng,
unsigned int  level 
) const
inlinevirtual

Check this object for errors.

Parameters
rnga RandomNumberGenerator for objects which use randomized testing
levelthe 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()

Implements CryptoMaterial.

Definition at line 1219 of file pubkey.h.

template<class GP>
bool DL_PublicKeyImpl< GP >::GetVoidValue ( const char *  name,
const std::type_info &  valueType,
void *  pValue 
) const
inlinevirtual

Get a named value.

Parameters
namethe name of the object or value to retrieve
valueTypereference to a variable that receives the value
pValuevoid pointer to a variable that receives the value
Returns
true if the value was retrieved, false otherwise

GetVoidValue() retrives the value of name if it exists.

Note
GetVoidValue() is an internal function and should be implemented by derived classes. Users should use one of the other functions instead.
See also
GetValue(), GetValueWithDefault(), GetIntValue(), GetIntValueWithDefault(), GetRequiredParameter() and GetRequiredIntParameter()

Implements NameValuePairs.

Definition at line 1226 of file pubkey.h.

template<class GP>
void DL_PublicKeyImpl< GP >::AssignFrom ( const NameValuePairs source)
inlinevirtual

Assign values to this object.

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

Implements CryptoMaterial.

Definition at line 1231 of file pubkey.h.

template<class GP>
bool DL_PublicKeyImpl< GP >::SupportsPrecomputation ( ) const
inlinevirtual

Determines whether the object supports precomputation.

Returns
true if the object supports precomputation, false otherwise
See also
Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1236 of file pubkey.h.

template<class GP>
void DL_PublicKeyImpl< GP >::Precompute ( unsigned int  precomputationStorage = 16)
inlinevirtual

Perform precomputation.

Parameters
precomputationStoragethe 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 from CryptoMaterial.

Definition at line 1238 of file pubkey.h.

template<class GP>
void DL_PublicKeyImpl< GP >::LoadPrecomputation ( BufferedTransformation storedPrecomputation)
inlinevirtual

Retrieve previously saved precomputation.

Parameters
storedPrecomputationBufferedTransformation with the saved precomputation
Exceptions
NotImplemented
See also
SupportsPrecomputation(), Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1244 of file pubkey.h.

template<class GP>
void DL_PublicKeyImpl< GP >::SavePrecomputation ( BufferedTransformation storedPrecomputation) const
inlinevirtual

Save precomputation for later use.

Parameters
storedPrecomputationBufferedTransformation to write the precomputation
Exceptions
NotImplemented
See also
SupportsPrecomputation(), Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1250 of file pubkey.h.

template<class GP>
const DL_GroupParameters<Element>& DL_PublicKeyImpl< GP >::GetAbstractGroupParameters ( ) const
inlinevirtual

Retrieves abstract group parameters.

Returns
a const reference to the group parameters

Implements DL_Key< GP::Element >.

Definition at line 1257 of file pubkey.h.

template<class GP>
DL_GroupParameters<Element>& DL_PublicKeyImpl< GP >::AccessAbstractGroupParameters ( )
inlinevirtual

Retrieves abstract group parameters.

Returns
a non-const reference to the group parameters

Implements DL_Key< GP::Element >.

Definition at line 1258 of file pubkey.h.


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