Public Key Encryption

From PQC WIKI

Public Key Enchamism (PKE) is a quadruple of algorithms and a corresponding key space , a ciphertext space with

  1. The parameter generation algorithm takes input , where is the security parameter and return global parameter .
  2. The key generation algorithm takes input param and returns a public and secret-key pair ().
  3. The encryption algorithm takes and a message and returns a ciphertext .
  4. The deterministic decryption algorithm takes and returns a message , with denoting as a failure.