Y. Dodis, J. Katz, S. Xu, M. Yung: \Key-Insulated Public Key Cryptosystems", Eurocrypt 2002. 15

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A Variant of the Cramer-Shoup Cryptosystem for Groups of Unknown.. - Lucks (2002)   (1 citation)  (Correct)

....Everyone knowing the factorisation of N can thus compute discrete logarithms mod N , and the factorisation of N may serve as a master key : Knowing it allows to compute the secret key from a given public key de ned over the group QR N . This approach is roughly related to key insulation [8], where ordinary public keys may be stored and used in a risky environment, while the master key is well protected. From a practical point of view, it may not appear too useful to hide the order of the group from the owner of the secret key (except in the context of the advanced protocols ....

Y. Dodis, J. Katz, S. Xu, M. Yung: \Key-Insulated Public Key Cryptosystems", Eurocrypt 2002. 15

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