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System::Security::Cryptography::SHA256 Class Reference

Computes SHA256 hash for input data. In C++ SHA256 is not an abstract class. 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::HashAlgorithm.

Inherited by System::Security::Cryptography::SHA256Managed.

Static Public Member Functions

static SharedPtr< SHA256Create ()
 Creates hash algorithm instance. More...
 
static SharedPtr< SHA256Create (const String &algName)
 Creates hash algorithm instance. More...
 
- Static Public Member Functions inherited from System::Security::Cryptography::HashAlgorithm
static SharedPtr< HashAlgorithmCreate (const String &hashName)
 Creates hash algorithm based on name. 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

 SHA256 ()
 Constructor. More...
 
- Protected Member Functions inherited from System::Security::Cryptography::HashAlgorithm
 HashAlgorithm ()
 Constructor. More...
 
 HashAlgorithm (std::unique_ptr< Botan::HashFunction > hash_function)
 Constructor. More...
 
virtual void HashCore (System::ArrayPtr< uint8_t > array, int32_t ibStart, int32_t cbSize)
 Passes data which is written into the object to the actual hash algorithm. More...
 
virtual System::ArrayPtr< uint8_t > HashFinal ()
 Finishes hash calculation. More...
 

Additional Inherited Members

- Public Types inherited from System::Object
typedef SmartPtr< Objectptr
 Alias for smart pointer type. More...
 
- Public Member Functions inherited from System::Security::Cryptography::HashAlgorithm
virtual ~HashAlgorithm ()
 Destructor. More...
 
ArrayPtr< uint8_t > ComputeHash (const ArrayPtr< uint8_t > &buffer)
 Hashes buffer. More...
 
ArrayPtr< uint8_t > ComputeHash (const ArrayPtr< uint8_t > &buffer, int offset, int count)
 Hashes buffer slice. More...
 
ArrayPtr< uint8_t > ComputeHash (SharedPtr< IO::Stream > const &inputStream)
 Reads stream until end and calculates hash for the data read. More...
 
virtual void Initialize ()
 Resets hasher into initial state. More...
 
virtual ArrayPtr< uint8_t > get_Hash ()
 Gets value of calculated hash code. More...
 
virtual int get_HashSize ()
 Gets size of calculated hash value in bytes. More...
 
int TransformBlock (ArrayPtr< uint8_t > inputBuffer, int inputOffset, int inputCount, ArrayPtr< uint8_t > outputBuffer, int outputOffset) override
 Processes block of data and copies data to output array. More...
 
ArrayPtr< uint8_t > TransformFinalBlock (ArrayPtr< uint8_t > inputBuffer, int inputOffset, int inputCount) override
 Processes last block of data and calculates hash. More...
 
int get_InputBlockSize () override
 Input block size. More...
 
int get_OutputBlockSize () override
 Output block size. 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...
 
- Protected Attributes inherited from System::Security::Cryptography::HashAlgorithm
int HashSizeValue
 Size of computed hash code, in bits. More...
 

Detailed Description

Computes SHA256 hash for input data. In C++ SHA256 is not an abstract class. 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

◆ SHA256()

System::Security::Cryptography::SHA256::SHA256 ( )
protected

Constructor.

Member Function Documentation

◆ Create() [1/2]

static SharedPtr<SHA256> System::Security::Cryptography::SHA256::Create ( )
static

Creates hash algorithm instance.

Returns
Newly created hasher instance.

◆ Create() [2/2]

static SharedPtr<SHA256> System::Security::Cryptography::SHA256::Create ( const String algName)
static

Creates hash algorithm instance.

Parameters
algNameMust be "System.Security.Cryptography.SHA256".
Returns
Newly created hasher instance.