Refactor entry parsing to make reusable

With support for degenerate chains coming, extract CoseSign1 and field
validation into reusable units.

Test: atest libcert_request_validator_tests
Change-Id: I87c20a94685bc2576cc14e1b0a939788d5e5fe1a
2 files changed
tree: bdac613ec3cac6beb945460394222299766982eb
  1. fuzzing/
  2. gdb/
  3. remote_provisioning/
  4. sanitizer-status/
  5. CleanSpec.mk
  6. OWNERS
  7. PREUPLOAD.cfg