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Cramer-Shoup is Plaintext Aware. Plaintext awareness is a technique for proving IND-CCA2 security. Bellare and Palacio provided a nice framework for considering plaintext awareness in the standard model...

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Cramer shoup is plaintext aware
Cramer-Shoup is Plaintext Aware

  • Plaintext awareness is a technique for proving IND-CCA2 security.

  • Bellare and Palacio provided a nice framework for considering plaintext awareness in the standard model...

  • ...but were unable to demonstrate that any scheme had the required level of plaintext awareness (PA2) to prove IND-CCA2 security.


Cramer shoup is plaintext aware1
Cramer-Shoup is Plaintext Aware

  • New paper proves that the hybrid Cramer-Shoup scheme is PA2 plaintext aware in the standard model.

  • Uses a novel technique to reduce PA2 plaintext awareness to PA1 plaintext awareness.

  • This technique could have applications to other schemes, such as ECIES.


Cramer shoup is plaintext aware2
Cramer-Shoup is Plaintext Aware

http://eprint.iacr.org/2005/261

http://www.isg.rhul.ac.uk/~alex/

[email protected]


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