Security Scol plugin
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#include <luc.h>
Public Member Functions | |
void | Initialize (const Integer &n, const Integer &e) |
Initialize a LUC public key with {n,e}. | |
void | BERDecode (BufferedTransformation &bt) |
void | DEREncode (BufferedTransformation &bt) const |
Integer | ApplyFunction (const Integer &x) const |
Applies the trapdoor. | |
Integer | PreimageBound () const |
Returns the maximum size of a message before the trapdoor function is applied. | |
Integer | ImageBound () const |
Returns the maximum size of a representation after the trapdoor function is applied. | |
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 |
Get a named value. | |
void | AssignFrom (const NameValuePairs &source) |
Assign values to this object. | |
const Integer & | GetModulus () const |
const Integer & | GetPublicExponent () const |
void | SetModulus (const Integer &n) |
void | SetPublicExponent (const Integer &e) |
Public Member Functions inherited from TrapdoorFunction | |
Integer | ApplyRandomizedFunction (RandomNumberGenerator &rng, const Integer &x) const |
Applies the trapdoor function. | |
bool | IsRandomized () const |
Determines if the encryption algorithm is randomized. | |
Public Member Functions inherited from TrapdoorFunctionBounds | |
virtual Integer | MaxPreimage () const |
Returns the maximum size of a message before the trapdoor function is applied bound to a public key. | |
virtual Integer | MaxImage () const |
Returns the maximum size of a representation after the trapdoor function is applied bound to a public key. | |
Public Member Functions inherited from CryptoMaterial | |
virtual void | ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const |
Check this object for errors. | |
virtual void | Save (BufferedTransformation &bt) const |
Saves a key to a BufferedTransformation. | |
virtual void | Load (BufferedTransformation &bt) |
Loads a key from a BufferedTransformation. | |
virtual bool | SupportsPrecomputation () const |
Determines whether the object supports precomputation. | |
virtual void | Precompute (unsigned int precomputationStorage) |
Perform precomputation. | |
virtual void | LoadPrecomputation (BufferedTransformation &storedPrecomputation) |
Retrieve previously saved precomputation. | |
virtual void | SavePrecomputation (BufferedTransformation &storedPrecomputation) const |
Save precomputation for later use. | |
void | DoQuickSanityCheck () const |
Perform a quick sanity check. | |
Public Member Functions inherited from NameValuePairs | |
template<class T > | |
bool | GetThisObject (T &object) const |
Get a copy of this object or subobject. | |
template<class T > | |
bool | GetThisPointer (T *&ptr) const |
Get a pointer to this object. | |
template<class T > | |
bool | GetValue (const char *name, T &value) const |
Get a named value. | |
template<class T > | |
T | GetValueWithDefault (const char *name, T defaultValue) const |
Get a named value. | |
CRYPTOPP_DLL std::string | GetValueNames () const |
Get a list of value names that can be retrieved. | |
CRYPTOPP_DLL bool | GetIntValue (const char *name, int &value) const |
Get a named value with type int. | |
CRYPTOPP_DLL int | GetIntValueWithDefault (const char *name, int defaultValue) const |
Get a named value with type int, with default. | |
CRYPTOPP_DLL bool | GetWord64Value (const char *name, word64 &value) const |
Get a named value with type word64. | |
CRYPTOPP_DLL word64 | GetWord64ValueWithDefault (const char *name, word64 defaultValue) const |
Get a named value with type word64, with default. | |
template<class T > | |
void | GetRequiredParameter (const char *className, const char *name, T &value) const |
Retrieves a required name/value pair. | |
CRYPTOPP_DLL void | GetRequiredIntParameter (const char *className, const char *name, int &value) const |
Retrieves a required name/value pair. | |
Protected Attributes | |
Integer | m_n |
Integer | m_e |
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. | |
The LUC function.
This class is here for historical and pedagogical interest. It has no practical advantages over other trapdoor functions and probably shouldn't be used in production software. The discrete log based LUC schemes defined later in this .h file may be of more practical interest.
Applies the trapdoor.
x | the message on which the encryption function is applied |
ApplyFunction is a generalization of encryption under a public key cryptosystem. Derived classes must implement it.
Implements TrapdoorFunction.
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virtual |
Assign values to this object.
This function can be used to create a public key from a private key.
Implements CryptoMaterial.
void LUCFunction::BERDecode | ( | BufferedTransformation & | bt | ) |
void LUCFunction::DEREncode | ( | BufferedTransformation & | bt | ) | const |
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inline |
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virtual |
Get a named value.
name | the name of the object or value to retrieve |
valueType | reference to a variable that receives the value |
pValue | void pointer to a variable that receives the value |
GetVoidValue() retrieves the value of name if it exists.
Implements NameValuePairs.
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inlinevirtual |
Returns the maximum size of a representation after the trapdoor function is applied.
Derived classes must implement ImageBound().
Implements TrapdoorFunctionBounds.
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inlinevirtual |
Returns the maximum size of a message before the trapdoor function is applied.
Derived classes must implement PreimageBound().
Implements TrapdoorFunctionBounds.
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inline |
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virtual |
Check this object for errors.
rng | a RandomNumberGenerator for objects which use randomized testing |
level | the level of thoroughness |
There are four levels of thoroughness:
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.
Implements CryptoMaterial.