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RSACryptoServiceProvider.VerifyData Method

Verifies the specified signature data by comparing it to the signature computed for the specified data.

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

public bool VerifyData (
	byte[] buffer,
	Object halg,
	byte[] signature
public boolean VerifyData (
	byte[] buffer, 
	Object halg, 
	byte[] signature
public function VerifyData (
	buffer : byte[], 
	halg : Object, 
	signature : byte[]
) : boolean
Not applicable.



The data that was signed.


The name of the hash algorithm used to create the hash value of the data.


The signature data to be verified.

Return Value

true if the signature verifies as valid; otherwise, false.

Exception typeCondition


The halg parameter is a null reference (Nothing in Visual Basic).


The halg parameter is not a valid type.

This method verifies the RSA digital signature produced by SignData.

The halg parameter can accept a String, a HashAlgorithm, or a Type.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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

.NET Compact Framework

Supported in: 2.0