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Security Metadata Revision Detect

This structural rule validates how the application resolves the MISB ST 0102 revision for each nested security local set.

What This Test Does​

The rule:

  • inspects Tag 22, Version
  • resolves the MISB ST 0102 revision when Tag 22 is present and valid
  • falls back to the explicit MISB ST 0102 revision 3 baseline when Tag 22 is absent
  • reports unsupported or malformed version values

✅ Pass Criteria​

The test passes when each detected security local set resolves to a known MISB ST 0102 revision.

❌ Fail Criteria​

The test fails when Tag 22 is present but cannot be decoded to a supported MISB ST 0102 revision.

Warning Behavior​

When Tag 22 is absent, the validator records the explicit revision 3 fallback. That is not a hard failure by itself, but it is surfaced as a warning so the report can distinguish inferred revision handling from explicit revision signaling.