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Symmetric vs Asymmetric Encryption
Comparison card: Symmetric vs Asymmetric Encryption. Easy English, with a real example. Scan the QR for the full lesson.
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What this card says
What each one is
Symmetric: one shared key locks and unlocks.
Asymmetric: a public key locks, a private key unlocks.
How they differ
Symmetric is fast but the key must be shared safely.
Asymmetric is slower but solves key sharing.
Example
HTTPS uses asymmetric to agree a key, then symmetric (AES) for speed.
Use when
Bulk data: symmetric (AES).
Key exchange and signatures: asymmetric (RSA).
Learn more in the lesson: 33.3 Symmetric Encryption