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The ElGamal cryptosystem
The same module told visually, ready to present. Speaker notes carry the full explanation.
Public-key
The ElGamal cryptosystem
Diffie-Hellman turned into encryption: send to a published key with no live handshake
The ElGamal cryptosystem · Classical Crypto Today1 / 4
Worked example
Bob sends m = 10 to Alice
The ElGamal cryptosystem · Classical Crypto Today2 / 4
Randomized
Same message, different ciphertexts
The ElGamal cryptosystem · Classical Crypto Today3 / 4
Advanced · signing
Schnorr signatures
DSA is standardized ElGamal signing; Schnorr underlies Bitcoin's Taproot
The ElGamal cryptosystem · Classical Crypto Today4 / 4
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