Secure Access Lab — UDS Diagnostic Security Demo

Select Demo Scenario

💻 Diagnostic Client Process 1

SessionDEFAULT

Access LevelNONE

Cert StoreRoot CA + Tester

Last Request—

shared_secret: ••••••••
tester_privkey: EC P-256
pending_seed: —
computed_key: —

⇄ JSON-RPC Socket Exchange Trust Boundary

Select a scenario · press ▶ Next Step

🖥️ Virtual ECU Process 2

SessionDEFAULT

Access LevelNONE

Attempts 0x27

0 / 3

Attempts 0x29

0 / 3

Lockout—

pending_seed: —
nonce_seen: —
audit_entries: 0
session_timer: 300s

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Welcome to Secure Access Lab
Select a scenario above to explore UDS diagnostic security in action. Each step shows the exact JSON-RPC messages between the Diagnostic Client (Process 1) and Virtual ECU (Process 2) across the two-process trust boundary socket.

📋 AUDIT LOG — Hash-Chained JSON (REQ-051 · REQ-052 · REQ-053)

        — log entries appear as authentication events occur —
      

UDS Negative Response Codes (NRC) in Scope

0x22 conditionsNotCorrect

0x24 requestSequenceError

0x35 invalidKey

0x36 exceededNumberOfAttempts

0x37 requiredTimeDelayNotExpired

0x73 unsupportedCertificateFormat

0x74 certificateVerificationFailed (CRL)

0x75 certificateExpired

0x76 certificateSignatureInvalid

0x78 certificateChainVerificationFailed