A2A-ForensicTrace: Offline Verification of Tamper-Evident A2A Runtime Evidence
A2A-ForensicTrace offline-verifies tamper-evident Agent2Agent evidence, and all 240 test receipts checked out.
A2A-ForensicTrace is an offline verification layer for security-relevant Agent2Agent executions that can cross organizational boundaries. It turns runtime observations into typed records, derives protocol relationships, and commits them under an incident-trace root bound by an Ed25519-signed receipt. Across 240 official A2A SDK executions—120 condition runs and 120 matched controls, with actions chosen by an LLM—every condition run returned the expected bounded findings, no control produced an indication, and all roots and receipts verified. Median in-memory verifier latency was 1.61 ms, rising to 30.85 ms at 1,000 committed leaves.
- A2A-ForensicTrace offline-verifies tamper-evident Agent2Agent runtime evidence.
- Ed25519 receipts bind an incident-trace root and a capture digest.
- All 120 condition runs matched expected findings; 120 controls stayed clean.
- Median verifier latency was 1.61 ms, and 30.85 ms at 1,000 leaves.
From the original article
1 min read at arxiv.orgSecurity-relevant Agent2Agent (A2A) executions can cross organizational boundaries, leaving investigators without live access to all participating systems. Offline investigation involves checking preserved records and their cross-record relationships for consistency.
By Adil Alshammari · arxiv.org
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