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Lesson 12 / 4229%
Cryptography2/5

Symmetric vs Asymmetric

Symmetric (one shared key)AliceBobAES(message, K)Ksame K on both sidesfast · key-exchange problemAsymmetric (public + private)AliceBobRSA(message, pubB)pubprivpub encrypts · priv decryptsslow · no key sharing neededmodern TLS uses asymmetric to swap a symmetric session key — best of both
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