Advanced AS2 Security: Key Management and Policy Enforcement

Exploring advanced topics: certificate revocation lists (CRL), certificate pinning strategies, and the implications of using different encryption ciphers per partner.

CRL Checking Automation

While basic validation checks expiration, production systems must integrate real-time CRL checking against certificate authorities or local caches. Failure to check a revoked certificate is a critical compliance gap.

Policy Mapping

Map specific security policies to individual trading partners. For example, Partner X requires AES-128 encryption, while Partner Y mandates AES-256. This granularity prevents over-encryption or under-encryption.