Computes the SHA1 hash for the input data.
<ComVisibleAttribute(True)> _ Public MustInherit Class SHA1 _ Inherits HashAlgorithm
[ComVisibleAttribute(true)] public abstract class SHA1 : HashAlgorithm
[ComVisibleAttribute(true)] public ref class SHA1 abstract : public HashAlgorithm
[<AbstractClassAttribute>] [<ComVisibleAttribute(true)>] type SHA1 = class inherit HashAlgorithm end
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 the corresponding data also matches. Small changes to the data result in large, unpredictable changes in the hash.
The hash size for the SHA1 algorithm is 160 bits.
The following example computes the SHA1 hash for data and stores it in result. This example assumes that there is a predefined constant DATA_SIZE.
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)
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);
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 );
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role not supported), Windows Server 2003 SP2