Replace the TODO placeholder with proper CRL validation that checks:
- thisUpdate is not in the future (CRL not yet valid)
- nextUpdate is not in the past (CRL expired)
- CRL issuer matches the certificate issuer (prevents CRL substitution)
All checks use x509-parser's ASN1Time for accurate time comparison
and log warnings/errors via tracing for operational visibility.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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