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Author

Mehdi Tibouchi

2 papers indexed here

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Open access Sep 2026

Cryptanalysis of an Unbounded Fully Homomorphic Encryption Scheme †

Gentry’s original blueprint for the construction of fully homomorphic encryption (FHE) starts from a somewhat homomorphic encryption scheme, that supports the homomorphic evaluation of arithmetic circuits of moderate multiplicative depth up to L, and whose decryption circuit itself can furthermore be “squashed” to a mu...

Mehdi Tibouchi, Hyewon Sung · 0 citations
Open access Jul 2026

FrozenTRU: Cold Boot Attacks on NTRU-Based Hash-and-Sign Signatures

This paper investigates cold boot attacks against NTRU-based signature scheme Falcon and its ancestor, the signature scheme of Ducas–Lyubashevsky–Prest (DLP), and proposes countermeasures with negligible computational cost that significantly reduce the memory footprint of signing keys for Falcon and DLP, and at the sam...

Hiroto Kaihara, Mehdi Tibouchi, Masayuki Abe · 0 citations

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