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OAuth 2.0 OpenID

⬢ श्रेणी 2तांत्रिक
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एका दृष्टिक्षेपात

OAuth 2.0 OpenID is the protocol for delegated authentication and authorization. OAuth handles 'authorization' (accessing user data on behalf of user), OpenID handles 'authentication' (proving who you are). Used everywhere: Google Login, GitHub, Stripe. Senior engineers earn 25-35% premium for security expertise. Time to mastery: 10-14 weeks. Sits between cryptography and application security.

OAuth 2.0 OpenID म्हणजे काय

OAuth 2.0 is the industry standard for authorization (granting third-party applications access to user data without sharing passwords). OpenID Connect is an identity layer built on OAuth 2.0 for authentication (proving who a user is). Together, they enable "Sign in with Google," "Login via GitHub," and similar patterns. The flow: user clicks "Login with Google" → redirected to Google → user grants permission → redirected back with access token → app uses token to access user data. User never shares password; only Google knows it.

🔧 साधने आणि परिसंस्था
OAuth 2.0 providers (Google, GitHub, Microsoft)Passport.jsAuth0Supabase AuthJWT librariesPostmanDebugging proxies

📋 सुरू करण्यापूर्वी

Api Security

💰 प्रदेशानुसार पगार

प्रदेशज्युनियरमध्यमसीनियर
USA$85k$140k$230k
UK£52k£85k£140k
EU€58k€95k€155k
CANADAC$90kC$145kC$240k

⚖ यांच्याशी तुलना करा

Api SecurityJwt Tokens

❓ FAQ

What's the difference between OAuth and OpenID?
OAuth = authorization (I allow app to access my calendar). OpenID = authentication (prove I'm John). OAuth 2.0 + OpenID Connect = full solution (prove who you are, grant access).
Should I implement OAuth or use Auth0?
Use Auth0 (or Supabase Auth) first. Building OAuth from scratch is complex (state management, PKCE, refresh tokens). Only build custom if Auth0 doesn't fit (very rare).
What's the PKCE flow?
Proof Key for Code Exchange. Mobile/SPA apps can't keep secrets, so PKCE adds challenge/verifier. Prevents authorization code interception. Best practice for all OAuth flows now.
How do I refresh access tokens?
OAuth provider gives access token + refresh token. Access token expires (1h). Refresh token is long-lived (30 days). When access expires, use refresh to get new access without user re-authenticating.
What are scopes in OAuth?
Scopes limit access. `openid profile email` = basic user info. `calendar:read` = read calendar. `admin:write` = write as admin. User grants scope at login.

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