HashAlgorithm.TransformBlock Method (Byte[], Int32, Int32, Byte[], Int32)

 

Computes the hash value for the specified region of the input byte array and copies the specified region of the input byte array to the specified region of the output byte array.

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

abstract TransformBlock : 
        inputBuffer:byte[] *
        inputOffset:int *
        inputCount:int *
        outputBuffer:byte[] *
        outputOffset:int -> int
override TransformBlock : 
        inputBuffer:byte[] *
        inputOffset:int *
        inputCount:int *
        outputBuffer:byte[] *
        outputOffset:int -> int

Parameters

inputBuffer
Type: System.Byte[]

The input to compute the hash code for.

inputOffset
Type: System.Int32

The offset into the input byte array from which to begin using data.

inputCount
Type: System.Int32

The number of bytes in the input byte array to use as data.

outputBuffer
Type: System.Byte[]

A copy of the part of the input array used to compute the hash code.

outputOffset
Type: System.Int32

The offset into the output byte array from which to begin writing data.

Return Value

Type: System.Int32

The number of bytes written.

Exception Condition
ArgumentException

inputCount uses an invalid value.

-or-

inputBuffer has an invalid length.

ArgumentNullException

inputBuffer is null.

ArgumentOutOfRangeException

inputOffset is out of range. This parameter requires a non-negative number.

ObjectDisposedException

The object has already been disposed.

You must call the TransformBlock method before calling the TransformFinalBlock method. You must call both methods before you retrieve the final hash value.

To retrieve the final hash value after calling the TransformFinalBlock method, get the byte array contained within the Hash property.

Calling the TransformBlock method with different input and output arrays results in an IOException.

The following code examples use the TransformFinalBlock method with the TransformBlock method to hash a string.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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