This documentation is archived and is not being maintained.

SHA256Managed.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 ()
public SHA256Managed ()
public function SHA256Managed ()
Not applicable.

Exception typeCondition

InvalidOperationException

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 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
Show: