Fixing spec discrepancy in MacedPublicKey am: fbc0db2cd2 am: 0b51b97a80 am: d731deda2e am: 649b0b6ba5

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1971499

Change-Id: I771bae65fab08b1ba78b3626229aa66f300c7db4