Plaintext Recovery Attacks against SSH

@article{Albrecht2009PlaintextRA,
  title={Plaintext Recovery Attacks against SSH},
  author={Martin R. Albrecht and Kenneth G. Paterson and Gaven J. Watson},
  journal={2009 30th IEEE Symposium on Security and Privacy},
  year={2009},
  pages={16-26}
}
This paper presents a variety of plaintext-recovering attacks against SSH. We implemented a proof of concept of our attacks against OpenSSH, where we can verifiably recover 14 bits of plaintext from an arbitrary block of ciphertext with probability $2^{-14}$ and 32 bits of plaintext from an arbitrary block of ciphertext with probability $2^{-18}$. These attacks assume the default configuration of a 128-bit block cipher operating in CBC mode. The paper explains why a combination of flaws in the… CONTINUE READING
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