Degenerate keys for RSA encryption

@article{Bergmann2009DegenerateKF,
  title={Degenerate keys for RSA encryption},
  author={S. Bergmann},
  journal={ACM SIGCSE Bull.},
  year={2009},
  volume={41},
  pages={95-98}
}
  • S. Bergmann
  • Published 2009
  • Computer Science
  • ACM SIGCSE Bull.
Some keys for the RSA public key cryptosystem fail to encrypt all possible plaintext messages. A necessary and sufficient condition for these degenerate keys is given. The probability of choosing such a key, when choosing keys at random, is presented. The impact of degenerate keys in an academic setting is discussed. 
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