Crypto++
Public Types | Public Member Functions | Static Public Member Functions | List of all members
DL_PublicKey_GFP< GP > Class Template Reference

#include <gfpcrypt.h>

Inheritance diagram for DL_PublicKey_GFP< GP >:
DL_PublicKeyImpl< GP > DL_PublicKey< GP::Element > DL_KeyImpl< X509PublicKey, GP > DL_Key< GP::Element > X509PublicKey ASN1CryptoMaterial< PublicKey > ASN1Object PublicKey CryptoMaterial NameValuePairs

Public Types

typedef GP::Element Element
 
typedef GP GroupParameters
 

Public Member Functions

void Initialize (const DL_GroupParameters_IntegerBased &params, const Integer &y)
 
void Initialize (const Integer &p, const Integer &g, const Integer &y)
 
void Initialize (const Integer &p, const Integer &q, const Integer &g, const Integer &y)
 
void BERDecodePublicKey (BufferedTransformation &bt, bool, size_t)
 decode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header
 
void DEREncodePublicKey (BufferedTransformation &bt) const
 encode subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header
 
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
 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 More...
 
bool SupportsPrecomputation () const
 
void Precompute (unsigned int precomputationStorage=16)
 do precomputation More...
 
void LoadPrecomputation (BufferedTransformation &storedPrecomputation)
 retrieve previously saved precomputation
 
void SavePrecomputation (BufferedTransformation &storedPrecomputation) const
 save precomputation for later use
 
const DL_GroupParameters
< Element > & 
GetAbstractGroupParameters () const
 
DL_GroupParameters< Element > & AccessAbstractGroupParameters ()
 
const
DL_FixedBasePrecomputation
< Element > & 
GetPublicPrecomputation () const
 
DL_FixedBasePrecomputation
< Element > & 
AccessPublicPrecomputation ()
 
bool operator== (const DL_PublicKeyImpl< GP > &rhs) const
 
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
 
GetAlgorithmID () const
 
bool BERDecodeAlgorithmParameters (BufferedTransformation &bt)
 
bool DEREncodeAlgorithmParameters (BufferedTransformation &bt) const
 
const GP & GetGroupParameters () const
 
GP & AccessGroupParameters ()
 
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)
 
void Save (BufferedTransformation &bt) const
 
void Load (BufferedTransformation &bt)
 
virtual void BEREncode (BufferedTransformation &bt) const
 encode this object into a BufferedTransformation, using BER More...
 
virtual void ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
 throws InvalidMaterial if this object fails Validate() test
 
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 >
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 More...
 
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
 

Static Public Member Functions

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

Detailed Description

template<class GP>
class DL_PublicKey_GFP< GP >

DSA public key format is defined in 7.3.3 of RFC 2459. The private key format is defined in 12.9 of PKCS #11 v2.10.

Definition at line 211 of file gfpcrypt.h.

Member Function Documentation

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

check this object for errors

Parameters
leveldenotes 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

Implements CryptoMaterial.

Definition at line 845 of file pubkey.h.

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

assign values from source to this object

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

Implements CryptoMaterial.

Definition at line 857 of file pubkey.h.

template<class GP>
bool DL_PublicKeyImpl< GP >::SupportsPrecomputation ( ) const
inlinevirtualinherited
Returns
whether this object supports precomputation

Reimplemented from CryptoMaterial.

Definition at line 862 of file pubkey.h.

template<class GP>
void DL_PublicKeyImpl< GP >::Precompute ( unsigned int  n = 16)
inlinevirtualinherited

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 from CryptoMaterial.

Definition at line 864 of file pubkey.h.

virtual void ASN1Object::BEREncode ( BufferedTransformation bt) const
inlinevirtualinherited

encode this object into a BufferedTransformation, using BER

this may be useful if DEREncode() would be too inefficient

Definition at line 1643 of file cryptlib.h.

bool NameValuePairs::GetIntValue ( const char *  name,
int &  value 
) const
inlineinherited

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 281 of file cryptlib.h.


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