interface for DL group parameters More...
#include <pubkey.h>
Public Types | |
typedef T | Element |
Public Member Functions | |
bool | Validate (RandomNumberGenerator &rng, unsigned int level) const |
check this object for errors | |
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 | |
bool | SupportsPrecomputation () const |
void | Precompute (unsigned int precomputationStorage=16) |
do precomputation | |
void | LoadPrecomputation (BufferedTransformation &storedPrecomputation) |
retrieve previously saved precomputation | |
void | SavePrecomputation (BufferedTransformation &storedPrecomputation) const |
save precomputation for later use | |
virtual const Element & | GetSubgroupGenerator () const |
virtual void | SetSubgroupGenerator (const Element &base) |
virtual Element | ExponentiateBase (const Integer &exponent) const |
virtual Element | ExponentiateElement (const Element &base, const Integer &exponent) const |
virtual const DL_GroupPrecomputation < Element > & | GetGroupPrecomputation () const =0 |
virtual const DL_FixedBasePrecomputation < Element > & | GetBasePrecomputation () const =0 |
virtual DL_FixedBasePrecomputation < Element > & | AccessBasePrecomputation ()=0 |
virtual const Integer & | GetSubgroupOrder () const =0 |
virtual Integer | GetMaxExponent () const =0 |
virtual Integer | GetGroupOrder () const |
virtual Integer | GetCofactor () const |
virtual unsigned int | GetEncodedElementSize (bool reversible) const =0 |
virtual void | EncodeElement (bool reversible, const Element &element, byte *encoded) const =0 |
virtual Element | DecodeElement (const byte *encoded, bool checkForGroupMembership) const =0 |
virtual Integer | ConvertElementToInteger (const Element &element) const =0 |
virtual bool | ValidateGroup (RandomNumberGenerator &rng, unsigned int level) const =0 |
virtual bool | ValidateElement (unsigned int level, const Element &element, const DL_FixedBasePrecomputation< Element > *precomp) const =0 |
virtual bool | FastSubgroupCheckAvailable () const =0 |
virtual bool | IsIdentity (const Element &element) const =0 |
virtual void | SimultaneousExponentiate (Element *results, const Element &base, const Integer *exponents, unsigned int exponentsCount) const =0 |
virtual void | GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs ¶ms=g_nullNameValuePairs) |
generate a random key or crypto parameters | |
void | GenerateRandomWithKeySize (RandomNumberGenerator &rng, unsigned int keySize) |
calls the above function with a NameValuePairs object that just specifies "KeySize" | |
virtual void | AssignFrom (const NameValuePairs &source)=0 |
assign values from source to this object | |
virtual void | ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const |
throws InvalidMaterial if this object fails Validate() test | |
virtual void | Save (BufferedTransformation &bt) const |
save key into a BufferedTransformation | |
virtual void | Load (BufferedTransformation &bt) |
load key from a BufferedTransformation | |
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 > | |
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 | |
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 | |
Protected Member Functions | |
void | ParametersChanged () |
interface for DL group parameters
Definition at line 521 of file pubkey.h.
bool DL_GroupParameters< T >::Validate | ( | RandomNumberGenerator & | rng, | |
unsigned int | level | |||
) | const [inline, virtual] |
check this object for errors
level | denotes 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 |
Implements CryptoMaterial.
bool DL_GroupParameters< T >::SupportsPrecomputation | ( | ) | const [inline, virtual] |
Reimplemented from CryptoMaterial.
void DL_GroupParameters< T >::Precompute | ( | unsigned int | n = 16 |
) | [inline, virtual] |
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.
virtual void GeneratableCryptoMaterial::GenerateRandom | ( | RandomNumberGenerator & | rng, | |
const NameValuePairs & | params = g_nullNameValuePairs | |||
) | [inline, virtual, inherited] |
generate a random key or crypto parameters
KeyingErr | if algorithm parameters are invalid, or if a key can't be generated (e.g., if this is a public key object) |
Reimplemented in DL_GroupParameters_EC< EC >, InvertibleESIGNFunction, DL_GroupParameters_IntegerBased, DL_GroupParameters_DSA, InvertibleLUCFunction, DL_PrivateKeyImpl< GP >, InvertibleRabinFunction, InvertibleRSAFunction, InvertibleRWFunction, and DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >.
Definition at line 1107 of file cryptlib.h.
Referenced by GeneratableCryptoMaterial::GenerateRandomWithKeySize().
virtual void CryptoMaterial::AssignFrom | ( | const NameValuePairs & | source | ) | [pure virtual, inherited] |
assign values from source to this object
Implemented in DL_GroupParameters_EC< EC >, ESIGNFunction, InvertibleESIGNFunction, DL_GroupParameters_IntegerBased, DL_GroupParameters_IntegerBasedImpl< GROUP_PRECOMP, BASE_PRECOMP >, LUCFunction, InvertibleLUCFunction, DL_PrivateKeyImpl< GP >, DL_PublicKeyImpl< GP >, RabinFunction, InvertibleRabinFunction, RSAFunction, InvertibleRSAFunction, RWFunction, InvertibleRWFunction, XTR_DH, DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC >, DL_GroupParameters_IntegerBasedImpl< ModExpPrecomputation >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, and DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >.
virtual void CryptoMaterial::Load | ( | BufferedTransformation & | bt | ) | [inline, virtual, inherited] |
load key from a BufferedTransformation
KeyingErr | if decode fails |
Reimplemented in InvertibleRSAFunction.
Definition at line 1072 of file cryptlib.h.
bool NameValuePairs::GetIntValue | ( | const char * | name, | |
int & | value | |||
) | const [inline, inherited] |
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 282 of file cryptlib.h.
Referenced by InvertibleRWFunction::GenerateRandom(), InvertibleRSAFunction::GenerateRandom(), InvertibleRabinFunction::GenerateRandom(), InvertibleLUCFunction::GenerateRandom(), DL_GroupParameters_IntegerBased::GenerateRandom(), DL_GroupParameters_DSA::GenerateRandom(), and InvertibleESIGNFunction::GenerateRandom().