macValid

A Boolean value that indicates whether the HMAC was verified. A value of True indicates that the HMAC (Mac) was generated with the specified Message, HMAC KMS key (KeyID) and MacAlgorithm..

If the HMAC is not verified, the VerifyMac operation fails with a KMSInvalidMacException exception. This exception indicates that one or more of the inputs changed since the HMAC was computed.