SPRUJ52C june 2022 – july 2023 AM69 , AM69A , TDA4AH-Q1 , TDA4AP-Q1 , TDA4VH-Q1 , TDA4VP-Q1
In order to use Km-key encryption for the 1.4 Device Keys and avoid changes in the API a Cyphertext Stealing technique is used. This technique allows to apply AES-ECB in Km-key encryption while 1.4 Device Key does not have size equal to multiple of 16.