crosen I think what you are trying to say is that if I encrypt data using Key"A" and then encrypt the same data using Key "B", then while encrypted the the 2 encrypted data streams do not consist of the same 1s and 0s because different Keys were used.
But when both are decrytped the data is identical.
When HDMI is thrown into the mix the 1s, and 0s are different when between the source-to-AVR compared to the 1s and 0s when they are between the AVR and sink. But when decrypted both are the same, and if they are the same why would this matter?
"Regarding surround sound, I know musicians too well to want them behind my back." -Walter Becker