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- W1552623664 abstract "We show that general one-way trapdoor permutations are sufficient to privately retrieve an entry from a database of size n with total communication complexity strictly less than n. More specifically, we present a protocol in which the user sends O(K 2) bits and the server sends n − bits (for any constant c), where K is the security parameter of the trapdoor permutations. Thus, for sufficiently large databases (e.g., when K = n ∈ for some small ∈) our construction breaks the information-theoretic lower-bound (of at least n bits). This demonstrates the feasibility of basing single-server private information retrieval on general complexity assumptions. An important implication of our result is that we can implement a 1-out-of-n Oblivious Transfer protocol with communication complexity strictly less than n based on any one-way trapdoor permutation." @default.
- W1552623664 created "2016-06-24" @default.
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- W1552623664 date "2000-01-01" @default.
- W1552623664 modified "2023-10-17" @default.
- W1552623664 title "One-Way Trapdoor Permutations Are Sufficient for Non-trivial Single-Server Private Information Retrieval" @default.
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- W1552623664 doi "https://doi.org/10.1007/3-540-45539-6_9" @default.
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