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SHA256 Class

Computes the SHA256 hash for the input data.

Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)

public ref class SHA256 abstract : public HashAlgorithm
/** @attribute ComVisibleAttribute(true) */ 
public abstract class SHA256 extends HashAlgorithm
public abstract class SHA256 extends HashAlgorithm
Not applicable.

The hash is used as a unique value of fixed size representing a large amount of data. Hashes of two sets of data should match if and only if the corresponding data also matches. Small changes to the data result in large unpredictable changes in the hash.

The hash size for the SHA256 algorithm is 256 bits.

This is an abstract class. The only implementation of this class is SHA256Managed.

The following example computes the SHA256 hash for data and stores it in result. This example assumes that there is a predefined constant DATA_SIZE.

array<Byte>^ data = gcnew array<Byte>( DATA_SIZE );
array<Byte>^ result;
SHA256^ shaM = gcnew SHA256Managed;
result = shaM->ComputeHash( data );

ubyte data[] = new ubyte[data_Size];
ubyte result[];
SHA256 shaM = new SHA256Managed();

result = shaM.ComputeHash(data);

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0