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ECDsa.SignHash Method

Generates a digital signature for the specified hash value.

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

public abstract byte[] SignHash(
	byte[] hash


Type: System.Byte[]

The hash value of the data that is being signed.

Return Value

Type: System.Byte[]
A digital signature that consists of the given hash value encrypted with the private key.


The hash parameter is null.

.NET Framework

Supported in: 4.5.3, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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