identity: Fix buildSessionTranscript() from a zero leading P-256 EC Public Key.
Properly encode an sessiontranscript from P-256 EC Public Key, in
particular ensure that the resulting sessiontranscript which includes an valid P-256 EC public key is expected.
Was able to reproduce this with about 1% failures running a test.
After the fix didn't get a failure in 1,000 runs.
This bug is similar with AOSP patch "identity: Fix uncompressed form encoding of P-256 EC Public Key."
Bug: 239857653
Test: atest --rerun-until-failure 1000 android.security.identity.cts.ReaderAuthTest#readerAuth
Change-Id: Id5ce46977cf3b6ce6c43beda657cd26b24969fe5
2 files changed