TLS 1.3 vs TLS 1.2: What Changed & Why It Matters
TLS 1.3 vs 1.2 comparison: faster handshake, removed weak ciphers, 0-RTT, and forward secrecy by default.
Key Changes in TLS 1.3
- Faster: 1-RTT handshake (vs 2-RTT in 1.2). 0-RTT for returning connections.
- More secure: Removed RSA key exchange, CBC ciphers, SHA-1, RC4, DES, 3DES.
- Forward secrecy mandatory: Every connection uses ephemeral keys.
- Simpler: Only 5 cipher suites vs 37 in TLS 1.2.
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