OAuth 2.0 PKCE Code Verifier & Challenge Auditor
Audits OAuth 2.0 PKCE (Proof Key for Code Exchange) code_verifier and code_challenge parameters.
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: RFC 7636 PKCE for OAuth Public Clients
Formula: Verify code_verifier length (43-128 chars) and S256 challenge mapping
Checks: String length between 43 and 128 characters
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.