VerifyData Method

RSACryptoServiceProvider.VerifyData Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Verifies that a digital signature is valid by determining the hash value in the signature using the provided public key and comparing it to the hash value of the provided data.

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

public bool VerifyData(
	byte[] buffer,
	Object halg,
	byte[] signature
)

Parameters

buffer
Type: System.Byte []
The data that was signed.
halg
Type: System.Object
The name of the hash algorithm used to create the hash value of the data.
signature
Type: System.Byte []
The signature data to be verified.

Return Value

Type: System.Boolean
true if the signature is valid; otherwise, false.

ExceptionCondition
ArgumentNullException

The halg parameter is null.

ArgumentException

The halg parameter is not a valid type.

This method verifies the RSA digital signature produced by the SignData method. The signature is verified by obtaining the hash value from the signature using the public key it was signed with, and comparing that value to the hash value of the provided data.

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

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

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