Formatting HDCP Keys for HDCP 1.x - 1.2 English

The hdcp_key_utility.c has two (empty) HDCP 1.x key arrays.

• The Hdcp14Key1 array.

  This array holds the HDCP 1.x RX KSV and Keys.

• The Hdcp14Key2 array.

  This array holds the HDCP 1.x RX KSV and Keys.

The arrays have a size of 328 bytes and contain the Key Selection Vector (KSV) (5 bytes padded with zeros to 8 bytes) and key set (320 bytes), where each key is 7 bytes padded with zeros to 8 bytes.

To format the HDCP 1.x keys for the key_utility, use the following steps:

1. Discard the 20 byte SHA-1.
2. Pad each key on the right with one byte of 0s (KSV is already padded).

   You should now have 1 x 8 byte KSV + 40 x 8 byte Keys.