Abstract
Golle et al recently introduced universal re-encryption, defining it as re-encryption by a player who does not know the key used for the original encryption, but which still allows an intended player to recover the plaintext. Universal re-encryption is potentially useful as part of many information-hiding techniques, as it allows any player to make ciphertext unidentifiable without knowing the key used.
Golle et al’s techniques for universal re-encryption are reviewed, and a hybrid universal re-encryption construction with improved work and space requirements which also permits indefinite re-encryptions is presented. Some implementational issues and optimisations are discussed.
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© 2005 Springer-Verlag Berlin Heidelberg
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Fairbrother, P. (2005). An Improved Construction for Universal Re-encryption. In: Martin, D., Serjantov, A. (eds) Privacy Enhancing Technologies. PET 2004. Lecture Notes in Computer Science, vol 3424. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11423409_6
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DOI: https://doi.org/10.1007/11423409_6
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