Authenticate Method

Authenticate(Byte[])

Returns the result of computing HMAC-SHA-256 on the given message using the AuthenticationKey. With protocol 1, the result is the first 16 bytes of the HMAC, and with protocol 2 it is the entire 32-byte result.

public abstract byte[] Authenticate(byte[] message)

Parameters

Type	Name	Description
System.Byte[]	message	The data to be authenticated.

Returns

System.Byte[]

A new byte array containing the authentication result.

Exceptions

Type	Condition
System.ArgumentNullException	The `message` argument is null.
System.InvalidOperationException	The object has been created or initialized, but the Encapsulate(CoseKey) method has not been called.

Authenticate(Byte[], Byte[])

Returns the result of computing HMAC-SHA-256 on the given message using the provided keyData. With protocol 1, the result is the first 16 bytes of the HMAC, and with protocol 2 it is the entire 32-byte result.

protected abstract byte[] Authenticate(byte[] keyData, byte[] message)

Parameters

Type	Name	Description
System.Byte[]	keyData	The key to use to authenticate.
System.Byte[]	message	The data to be authenticated.

Returns

System.Byte[]

A new byte array containing the authentication result.

Exceptions

Type	Condition
System.ArgumentNullException	The `keyData` or `message` argument is null.