SHA256Managed Constructor

SHA256Managed Constructor

Initializes a new instance of the SHA256Managed class using the managed library.

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

public SHA256Managed()


The Federal Information Processing Standards (FIPS) security setting is enabled. This implementation is not part of the Windows Platform FIPS-validated cryptographic algorithms.

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 SHA256Managed algorithm is 256 bits.

Important   If you enable the following security setting either in the Local Security Policy or as part of Group Policy you will get an InvalidOperationException when you attempt to use this constructor:

System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

Community Additions

© 2015 Microsoft