HashAlgorithm.HashCore Method (System.Security.Cryptography)

HashCore Method

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

HashAlgorithm..::.HashCore Method

When overridden in a derived class, routes data written to the object into the hash algorithm for computing the hash.

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

Syntax

Visual Basic (Declaration)

Protected MustOverride Sub HashCore ( _
    array As Byte(), _
    ibStart As Integer, _
    cbSize As Integer _
)

Visual Basic (Usage)

Dim array As Byte()
Dim ibStart As Integer
Dim cbSize As Integer

Me.HashCore(array, ibStart, cbSize)

protected abstract void HashCore(
    byte[] array,
    int ibStart,
    int cbSize
)

Visual C++

protected:
virtual void HashCore(
    array<unsigned char>^ array, 
    int ibStart, 
    int cbSize
) abstract

JScript

protected abstract function HashCore(
    array : byte[], 
    ibStart : int, 
    cbSize : int
)

Parameters

array: Type: array<System..::.Byte>[]()[]
The input to compute the hash code for.

ibStart: Type: System..::.Int32
The offset into the byte array from which to begin using data.

cbSize: Type: System..::.Int32
The number of bytes in the byte array to use as data.

Remarks

This method is not called by application code.

This abstract method performs the hash computation. Every write to the cryptographic stream object passes the data through this method. For each block of data, this method updates the state of the hash object so a correct hash value is returned at the end of the data stream.

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

Reference

HashAlgorithm Class

HashAlgorithm Members

System.Security.Cryptography Namespace

Other Resources

Cryptographic Services