Insecure Link Transmission with Public Key Cryptography

• Suppose A has (public key,private key) <eA,dA> and B keys <eB,dB>

• A transmits a message mA to B encrypting it with B’s public key eB

• B decrypts this message and reads it using private key dB

• Similarly B sends a message mB to A encrypting with eA which A decrypts with private key dA

Plaintext

Encryption

Public Key

Private Key

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