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System::Security::Cryptography::DSA Class Referenceabstract

Base class for implementations of DSA algorithm. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument. More...

Inherits System::Security::Cryptography::AsymmetricAlgorithm.

Inherited by System::Security::Cryptography::DSACryptoServiceProvider.

Public Member Functions

virtual ByteArrayPtr CreateSignature (ByteArrayPtr rgb_hash)=0
 Create DSA signature for the specified data. More...
 
virtual bool VerifySignature (ByteArrayPtr rgb_hash, ByteArrayPtr rgb_signature)=0
 Verify DSA signature for the specified data. More...
 
virtual DSAParameters ExportParameters (bool include_private_parameters)=0
 Exports all parameters. More...
 
virtual void ImportParameters (DSAParameters parameters)=0
 Imports all parameters from data structure. More...
 
virtual void FromXmlString (String xml_string) override
 Initializes object using XML-encoded parameters. More...
 
virtual String ToXmlString (bool include_private_parameters) override
 Exports all parameters in XML format. More...
 
ByteArrayPtr SignData (const ByteArrayPtr &data, const HashAlgorithmName &hash_algorithm)
 Computes the hash value of the specified data array using the specified hash algorithm, and signs the result. More...
 
ByteArrayPtr SignData (const ByteArrayPtr &data, int32_t offset, int32_t count, const HashAlgorithmName &hash_algorithm)
 Computes the hash value of the specified data array using the specified hash algorithm, and signs the result. More...
 
ByteArrayPtr SignData (const StreamPtr &stream, const HashAlgorithmName &hash_algorithm)
 Computes the hash value of the specified binary stream using the specified hash algorithm, and signs the result. More...
 
bool VerifyData (const ByteArrayPtr &data, const ByteArrayPtr &signature, const HashAlgorithmName &hash_algorithm)
 Verifies that the signature of the specified data is valid. More...
 
bool VerifyData (const ByteArrayPtr &data, int32_t offset, int32_t count, const ByteArrayPtr &signature, const HashAlgorithmName &hash_algorithm)
 Verifies that the signature of the specified data is valid. More...
 
bool VerifyData (const StreamPtr &stream, const ByteArrayPtr &signature, const HashAlgorithmName &hash_algorithm)
 Verifies that the signature of the specified binary stream is valid. More...
 
- Public Member Functions inherited from System::Security::Cryptography::AsymmetricAlgorithm
virtual int32_t get_KeySize ()
 Gets key size. More...
 
virtual void set_KeySize (int32_t value)
 Sets key size. More...
 
virtual ArrayPtr< SharedPtr< KeySizes > > get_LegalKeySizes ()
 Gets array of allowed key sizes. More...
 
void Clear ()
 Releases all resources. More...
 
virtual String get_SignatureAlgorithm ()
 Gets signature algorithm to use. More...
 
virtual String get_KeyExchangeAlgorithm ()
 Gets key exchange algorithm to use. More...
 
void Dispose () override
 Releases resources owned by the current object. More...
 
- Public Member Functions inherited from System::Object
 Object ()
 Creates object. Initializes all internal data structures. More...
 
virtual ~Object ()
 Destroys object. Frees all internal data structures. More...
 
 Object (Object const &x)
 Copy constructor. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
Objectoperator= (Object const &x)
 Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
ObjectSharedRefAdded ()
 Increments shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int SharedRefRemovedSafe ()
 Decrements and returns shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int RemovedSharedRefs (int count)
 Decreases shared reference count by specified value. More...
 
Detail::SmartPtrCounter * WeakRefAdded ()
 Increments weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
void WeakRefRemoved ()
 Decrements weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
Detail::SmartPtrCounter * GetCounter ()
 Gets reference counter data structure associated with the object. More...
 
int SharedCount () const
 Gets current value of shared reference counter. More...
 
void Lock ()
 Implements C# lock() statement locking. Call directly or use LockContext sentry object. More...
 
void Unlock ()
 Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. More...
 
virtual bool Equals (ptr obj)
 Compares objects using C# Object.Equals semantics. More...
 
virtual int32_t GetHashCode () const
 Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. More...
 
virtual String ToString () const
 Analog of C# Object.ToString() method. Enables converting custom objects to string. More...
 
virtual ptr MemberwiseClone () const
 Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. More...
 
virtual const TypeInfoGetType () const
 Gets actual type of object. Analog of C# System.Object.GetType() call. More...
 
virtual bool Is (const TypeInfo &targetType) const
 Check if object represents an instance of type described by targetType. Analog of C# 'is' operator. More...
 
virtual void SetTemplateWeakPtr (uint32_t argument)
 Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. More...
 
virtual bool FastCast (const Details::FastRttiBase &helper, void **out_ptr) const
 For internal purposes only. More...
 
template<>
bool ReferenceEquals (String const &str, std::nullptr_t)
 Specialization of Object::ReferenceEquals for case of string and nullptr. More...
 
template<>
bool ReferenceEquals (String const &str1, String const &str2)
 Specialization of Object::ReferenceEquals for case of strings. More...
 

Static Public Member Functions

static SharedPtr< DSACreate ()
 Creates default DSA aglorithm implementation. More...
 
static SharedPtr< DSACreate (const String &alg_name)
 Creates default DSA algorithm implementation. More...
 
static SharedPtr< DSACreate (int32_t key_size_in_bits)
 Creates default DSA algorithm implementation with specifed key size. More...
 
static SharedPtr< DSACreate (const DSAParameters &parameters)
 Creates default DSA algorithm implementation with specifed parameters. More...
 
static SharedPtr< DSACreateFromXmlString (const String &xml_string)
 Creates default DSA algorithm implementation with specifed XML-encoded parameters. More...
 
- Static Public Member Functions inherited from System::Security::Cryptography::AsymmetricAlgorithm
static SharedPtr< AsymmetricAlgorithmCreate ()
 Creates a default algorithm. Not implemented. More...
 
static SharedPtr< AsymmetricAlgorithmCreate (const String &alg_name)
 Creates algorithm by name. Not implemented. More...
 
- Static Public Member Functions inherited from System::Object
static bool ReferenceEquals (ptr const &objA, ptr const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, T const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, std::nullptr_t)
 Reference-compares value type object with nullptr. More...
 
template<typename T1 , typename T2 >
static std::enable_if< IsSmartPtr< T1 >::value &&IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares reference type objects in C# style. More...
 
template<typename T1 , typename T2 >
static std::enable_if<!IsSmartPtr< T1 >::value &&!IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares value type objects in C# style. More...
 
static const TypeInfoType ()
 Implements C# typeof(System.Object) construct. More...
 
template<>
bool Equals (float const &objA, float const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 
template<>
bool Equals (double const &objA, double const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 

Protected Member Functions

 DSA ()
 
 ~DSA ()
 
virtual ByteArrayPtr HashData (ByteArrayPtr data, int32_t offset, int32_t count, HashAlgorithmName hash_algorithm)
 Computes the hash value of the specified data array using the specified hash algorithm. More...
 
virtual ByteArrayPtr HashData (StreamPtr stream, HashAlgorithmName hash_algorithm)
 Computes the hash value of the specified binary stream using the specified hash algorithm. More...
 
- Protected Member Functions inherited from System::Security::Cryptography::AsymmetricAlgorithm
 AsymmetricAlgorithm ()
 Constructor. More...
 

Additional Inherited Members

- Public Types inherited from System::Object
typedef SmartPtr< Objectptr
 Alias for smart pointer type. More...
 
- Protected Attributes inherited from System::Security::Cryptography::AsymmetricAlgorithm
int32_t KeySizeValue
 Key size associated with algorithm. More...
 
ArrayPtr< SharedPtr< KeySizes > > LegalKeySizesValue
 Enabled key sizes. More...
 

Detailed Description

Base class for implementations of DSA algorithm. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.

Constructor & Destructor Documentation

◆ DSA()

System::Security::Cryptography::DSA::DSA ( )
protected

◆ ~DSA()

System::Security::Cryptography::DSA::~DSA ( )
protected

Member Function Documentation

◆ Create() [1/4]

static SharedPtr<DSA> System::Security::Cryptography::DSA::Create ( )
static

Creates default DSA aglorithm implementation.

Returns
DSA algorithm object.

◆ Create() [2/4]

static SharedPtr<DSA> System::Security::Cryptography::DSA::Create ( const DSAParameters parameters)
static

Creates default DSA algorithm implementation with specifed parameters.

Parameters
parametersThe parameters for the DSA algorithm.

◆ Create() [3/4]

static SharedPtr<DSA> System::Security::Cryptography::DSA::Create ( const String alg_name)
static

Creates default DSA algorithm implementation.

Parameters
alg_nameMust be "System.Security.Cryptography.DSACryptoServiceProvider".
Returns
DSA algorithm object.

◆ Create() [4/4]

static SharedPtr<DSA> System::Security::Cryptography::DSA::Create ( int32_t  key_size_in_bits)
static

Creates default DSA algorithm implementation with specifed key size.

Parameters
key_size_in_bitsThe key size, in bits.

◆ CreateFromXmlString()

static SharedPtr<DSA> System::Security::Cryptography::DSA::CreateFromXmlString ( const String xml_string)
static

Creates default DSA algorithm implementation with specifed XML-encoded parameters.

Parameters
xml_stringThe parameters for the DSA algorithm.

◆ CreateSignature()

virtual ByteArrayPtr System::Security::Cryptography::DSA::CreateSignature ( ByteArrayPtr  rgb_hash)
pure virtual

Create DSA signature for the specified data.

Parameters
rgb_hashData to be signed.
Returns
DSA signature.

Implemented in System::Security::Cryptography::DSACryptoServiceProvider.

◆ ExportParameters()

virtual DSAParameters System::Security::Cryptography::DSA::ExportParameters ( bool  include_private_parameters)
pure virtual

Exports all parameters.

Parameters
include_private_parametersTrue to export both private and public parameters, false to export public parameters only.
Returns
Exported parameters structure.

Implemented in System::Security::Cryptography::DSACryptoServiceProvider.

◆ FromXmlString()

virtual void System::Security::Cryptography::DSA::FromXmlString ( String  xml_string)
overridevirtual

Initializes object using XML-encoded parameters.

Parameters
xml_stringParameters in XML format.

Reimplemented from System::Security::Cryptography::AsymmetricAlgorithm.

◆ HashData() [1/2]

virtual ByteArrayPtr System::Security::Cryptography::DSA::HashData ( ByteArrayPtr  data,
int32_t  offset,
int32_t  count,
HashAlgorithmName  hash_algorithm 
)
protectedvirtual

Computes the hash value of the specified data array using the specified hash algorithm.

Parameters
dataData to hash.
offsetOffset in data.
countNumber of bytes to hash.
hash_algorithmHash algorithm.
Returns
Hashed data.

Reimplemented in System::Security::Cryptography::DSACryptoServiceProvider.

◆ HashData() [2/2]

virtual ByteArrayPtr System::Security::Cryptography::DSA::HashData ( StreamPtr  stream,
HashAlgorithmName  hash_algorithm 
)
protectedvirtual

Computes the hash value of the specified binary stream using the specified hash algorithm.

Parameters
streamBynary stream to hashed.
hash_algorithmHash algorithm.
Returns
Hashed data.

Reimplemented in System::Security::Cryptography::DSACryptoServiceProvider.

◆ ImportParameters()

virtual void System::Security::Cryptography::DSA::ImportParameters ( DSAParameters  parameters)
pure virtual

Imports all parameters from data structure.

Parameters
parametersStructure to import parameters from.

Implemented in System::Security::Cryptography::DSACryptoServiceProvider.

◆ SignData() [1/3]

ByteArrayPtr System::Security::Cryptography::DSA::SignData ( const ByteArrayPtr data,
const HashAlgorithmName hash_algorithm 
)

Computes the hash value of the specified data array using the specified hash algorithm, and signs the result.

Parameters
dataInput data array.
hash_algorithmHash algorithm. return DSA signature for the input data.

◆ SignData() [2/3]

ByteArrayPtr System::Security::Cryptography::DSA::SignData ( const ByteArrayPtr data,
int32_t  offset,
int32_t  count,
const HashAlgorithmName hash_algorithm 
)

Computes the hash value of the specified data array using the specified hash algorithm, and signs the result.

Parameters
dataInput data array.
offsetOffset in data.
countNumber of bytes to use as input data.
hash_algorithmHash algorithm. return DSA signature for the input data.

◆ SignData() [3/3]

ByteArrayPtr System::Security::Cryptography::DSA::SignData ( const StreamPtr stream,
const HashAlgorithmName hash_algorithm 
)

Computes the hash value of the specified binary stream using the specified hash algorithm, and signs the result.

Parameters
streamBinary stream.
hash_algorithmHash algorithm. return DSA signature for the input data.

◆ ToXmlString()

virtual String System::Security::Cryptography::DSA::ToXmlString ( bool  include_private_parameters)
overridevirtual

Exports all parameters in XML format.

Parameters
include_private_parametersTrue to export both private and public parameters, false to export public parameters only.
Returns
XML-encoded parameters.

Reimplemented from System::Security::Cryptography::AsymmetricAlgorithm.

◆ VerifyData() [1/3]

bool System::Security::Cryptography::DSA::VerifyData ( const ByteArrayPtr data,
const ByteArrayPtr signature,
const HashAlgorithmName hash_algorithm 
)

Verifies that the signature of the specified data is valid.

Parameters
dataSigned data.
signatureSignature data.
hash_algorithmHash algorithm. return true if signature is valid, otherwise - false.

◆ VerifyData() [2/3]

bool System::Security::Cryptography::DSA::VerifyData ( const ByteArrayPtr data,
int32_t  offset,
int32_t  count,
const ByteArrayPtr signature,
const HashAlgorithmName hash_algorithm 
)

Verifies that the signature of the specified data is valid.

Parameters
dataSigned data.
offsetOffset in data.
countNumber of bytes to hash.
signatureSignature data.
hash_algorithmHash algorithm. return true if signature is valid, otherwise - false.

◆ VerifyData() [3/3]

bool System::Security::Cryptography::DSA::VerifyData ( const StreamPtr stream,
const ByteArrayPtr signature,
const HashAlgorithmName hash_algorithm 
)

Verifies that the signature of the specified binary stream is valid.

Parameters
streamSigned data.
signatureSignature data.
hash_algorithmHash algorithm. return true if signature is valid, otherwise - false.

◆ VerifySignature()

virtual bool System::Security::Cryptography::DSA::VerifySignature ( ByteArrayPtr  rgb_hash,
ByteArrayPtr  rgb_signature 
)
pure virtual

Verify DSA signature for the specified data.

Parameters
rgb_hashData signed with rgb_signature.
rgb_signatureDSA signature.
Returns
true - if rgb_signature matches the DSA signature computed on rgb_hash, otherwise - false.

Implemented in System::Security::Cryptography::DSACryptoServiceProvider.