System.Security.Cryptograph ...


.NET Framework Class Library
SHA1CryptoServiceProvider Class

Computes the SHA1 hash value for the input data using the implementation provided by the cryptographic service provider (CSP). This class cannot be inherited.

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

Visual Basic (Declaration)
<ComVisibleAttribute(True)> _
Public NotInheritable Class SHA1CryptoServiceProvider _
    Inherits SHA1
Visual Basic (Usage)
Dim instance As SHA1CryptoServiceProvider
C#
[ComVisibleAttribute(true)]
public sealed class SHA1CryptoServiceProvider : SHA1
Visual C++
[ComVisibleAttribute(true)]
public ref class SHA1CryptoServiceProvider sealed : public SHA1
JScript
public final class SHA1CryptoServiceProvider extends SHA1
Remarks

The hash size for the SHA1CryptoServiceProvider class is 160 bits.

Examples

The following code example computes the SHA1 hash value for data and stores it in result. This example assumes that there is a predefined constant DATA_SIZE.

Visual Basic
Dim data(DATA_SIZE) As Byte

Dim result() As Byte

Dim sha As New SHA1CryptoServiceProvider()
' This is one implementation of the abstract class SHA1.
result = sha.ComputeHash(data)
C#
byte[] data = new byte[DATA_SIZE];

byte[] result; 

SHA1 sha = new SHA1CryptoServiceProvider(); 
// This is one implementation of the abstract class SHA1.

result = sha.ComputeHash(data);
Visual C++
array<Byte>^ data = gcnew array<Byte>( DATA_SIZE );

array<Byte>^ result;

SHA1^ sha = gcnew SHA1CryptoServiceProvider;

// This is one implementation of the abstract class SHA1.
result = sha->ComputeHash( data );
Inheritance Hierarchy

System..::.Object
  System.Security.Cryptography..::.HashAlgorithm
    System.Security.Cryptography..::.SHA1
      System.Security.Cryptography..::.SHA1CryptoServiceProvider
Thread Safety

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

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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.
Version Information

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0
See Also

Reference

Other Resources

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