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HMACSHA512.ProduceLegacyHmacValues Property

Provides a workaround for the .NET Framework 2.0 implementation of the HMACSHA512 algorithm, which is inconsistent with the .NET Framework 2.0 Service Pack 1 implementation.

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

public bool ProduceLegacyHmacValues { get; set; }

Property Value

Type: System.Boolean
true to enable .NET Framework 2.0 Service Pack 1 applications to interact with .NET Framework 2.0 applications; otherwise, false.

The purpose of the ProduceLegacyHmacValues Boolean property is to enable .NET Framework 2.0 Service Pack 1 applications to interact with .NET Framework 2.0 applications. When you set this property to true, the HMACSHA512 object produces values that match the values produced by the .NET Framework 2.0. You should set this property only once after you create your HMAC object. You will need to reset your key afterwards, as shown in the following example. 

public static void Test()
    {
    HMACSHA512 hmac = new HMACSHA512();
    hmac.ProduceLegacyHmacValues = true;
    hmac.Key = // ...Get the HMAC key.
    // ...
    // Use the HMAC algorithm.
    // ...
    }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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