Titlebook: Cryptology and Network Security; 20th International C Mauro Conti,Marc Stevens,Stephan Krenn Conference proceedings 2021 Springer Nature Sw

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,Thermisch aktivierte Vorgänge,n this work we extend and strengthen such convertibly linkable group signatures. Conversion can now be triggered by malicious entities too, and the converted outputs can be publicly verified. This preserves the authentication of data during the conversion process. We define the security of this sche

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,Antworten zu den Verständnisfragen,f our combiners as a proof-of-concept and benchmark it. More precisely, we build a hybrid IND-CCA KEM from the CPA-secure versions of HQC and LAC, two NIST Round 2 PQ proposals. We show that the resulting KEM offers comparable performances to HQC, thus improving security at a small cost. Finally, we

Individual

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Kriterien zur Werkstoffauswahl,l. proposed Access Control Encryption (ACE) schemes where a predicate function decides whether or not users can read (decrypt) and write (encrypt) data, while the message secrecy and the users’ anonymity are preserved against malicious parties. Subsequently, several ACE constructions with an arbitra

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Kriterien zur Schadensbewertung, possible alternatives for key re-introduction and identify weaknesses, or potential weaknesses, in them. Our results show that it seems favorable to separate the state initialization, the key re-introduction, and the ./. register initialization into three separate phases. Based on this, we propose

CRATE

,Antworten zu den Verständnisfragen, launch partitioning oracle attacks. Partitioning oracle attacks were recently introduced by Len et al. (Usenix’21) as a new class of decryption error oracle which, conceptually, takes a ciphertext as input and outputs whether or not the decryption key belongs to some known subset of keys. Partition

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Kriterien zur Werkstoffauswahl,tification system with two key novelties: switching functionalities of encryption and key generation algorithms of FE to optimize matching latency while maintaining its security guarantees, and identifying output leakage to later formalize two new attacks based on it with appropriate countermeasures

Aspiration

,Thermisch aktivierte Vorgänge, computers. One of the Round 3 candidates of the ongoing NIST post-quantum standardization effort is .. It was designed to provide conservative security, which comes with the caveat that implementations are often bigger and slower compared to alternative schemes. In particular, the most time-consumi

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Atomarer Aufbau kristalliner Stoffe,be and Okamoto (CRYPTO 2000) used this technique to build a partially blind signature scheme whose security is based on the hardness of the discrete logarithm problem. Inspired by their approach, we present ., an efficient blind signature scheme from OR-proofs based on lattices over modules. Using O