Titlebook: Information Security and Cryptology – ICISC 2022; 25th International C Seung-Hyun Seo,Hwajeong Seo Conference proceedings 2023 The Editor(s

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Impossible Differential Cryptanalysis on?Reduced-Round PRINCEcorers. PRINCE is a lightweight block cipher proposed by J. Borghoff et al. at ASIACRYPT 2012. In 2017, Ding et al. constructed a 4-round truncated impossible differential distinguisher. They treat S-boxes as ideal ones that any nonzero input difference could produce any nonzero output difference. Obvio

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Differential Testing of Cryptographic Libraries with Hybrid Fuzzingentations of cryptographic algorithms. Cryptofuzz is an edge-cutting project that supports various libraries in this regard, employing coverage-guided libFuzzer as its back-end core. However, we observe that Cryptofuzz heavily relies on heuristic custom mutation strategies to expand code coverage wh

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Public Key Encryption with?Hierarchical Authorized Keyword Searchdata under a public key setting. In this cryptographic primitive, senders can generate searchable ciphertexts for specific keywords to be retrieved from a given document; receivers can generate corresponding trapdoors for search by using their private keys. Recently, Jiang . (ACISP’ 16) proposed an

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Reputation at?Stake! A?Trust Layer over?Decentralized Ledger for?Multiparty Computation and?Reputatihat the delegation framework, introduced by Karakostas . (SCN’20) to provide a delegation framework, can be extended and repurposed to construct a trust layer over a PoS consensus protocol in addition to its original application. Furthermore, we show a concrete reputation system satisfying the posit

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Key-Recovery by?Side-Channel Information on?the?Matrix-Vector Product in?Code-Based Cryptosystemsl signature, and key exchange. Today, we only do key exchange (TLS 1.3) with the ECDH protocol. The confidentiality is persistent because the session keys are discarded at the end and to certify this key exchange, we sign it with RSA or ECDSA. However, these cryptosystems are at least theoretically

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