A passive attack on a cryptosystem is one in which the cryptanalyst cannot interact with any of the parties involved, attempting to break the system solely based upon observed data (i.e. the ciphertext).

See also

  • Cybersecurity
  • Known plaintext attack
  • Chosen plaintext attack
  • Chosen ciphertext attack
  • Adaptive chosen ciphertext attack
  • Topics in cryptography

References

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Further reading

  • Cryptography and Network Security By William Stallings