JWT vs OAuth2 tokens: why claims matter for backend security
OAuth2 is a flow, JWT is a format — and neither one authorises anything. The claims your backend verifies and validates are what actually decide access.
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How to spot a misconfigured RS256 signature before deployment
RS256 fails quietly — the happy path verifies while the key, the PEM format or the algorithm allowlist is wrong. Here is how to catch it before it ships.