Results 11 to 20 of about 4,552,363 (166)
Beyond Birthday Bound Secure Fresh Rekeying: Application to Authenticated Encryption [PDF]
Lecture Notes in Computer Science, 2020 Fresh rekeying is a well-established method to protect a primitive or mode against side-channel attacks: an easy to protect but cryptographically not so involved function generates a subkey from the master key, and this subkey is then used for the block encryption of a single or a few messages. It is an efficient way to achieve side-channel protection,
Bart Mennink
exaly +5 more sources
Tweakable Blockciphers with Beyond Birthday-Bound Security [PDF]
, 2012 Liskov, Rivest and Wagner formalized the tweakable blockcipher TBC primitive at CRYPTO'02. The typical recipe for instantiating a TBC is to start with a blockcipher, and then build up a construction that admits a tweak. Almost all such constructions enjoy provable security only to the birthday bound, and the one that does achieve security beyond the ...
Will Landecker +2 more
openaire +4 more sources
New Blockcipher Modes of Operation with Beyond the Birthday Bound Security [PDF]
, 2006 In this paper, we define and analyze a new blockcipher mode of operation for encryption, CENC, which stands for Cipher-based ENCryption. CENC has the following advantages: (1) beyond the birthday bound security, (2) security proofs with the standard PRP assumption, (3) highly efficient, (4) single blockcipher key, (5) fully parallelizable, (6) allows ...
Tetsu Iwata
core +5 more sources
Security of the Misty Structure beyond the Birthday Bound [PDF]
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2014 In this paper, we first prove beyond-birthyday-bound security for the Misty structure. Specifically, we show that an r-round Misty structure is secure against CCA attacks up to O(2 rn r+7 ) query complexity, where n is the size of each round permutation.
Jooyoung Lee
core +7 more sources
Permutation-Based Hashing Beyond the Birthday Bound [PDF]
IACR Transactions on Symmetric CryptologyIt is known that the sponge construction is tightly indifferentiable from a random oracle up to around 2c/2 queries, where c is the capacity. In particular, it cannot provide generic security better than half of the underlying permutation size.
Charlotte Lefevre, Bart Mennink
doaj +5 more sources
Cymric: Short-tailed but Mighty
Transactions on Cryptographic Hardware and Embedded SystemsAuthenticated encryption (AE) is a fundamental tool in today’s secure communication. Numerous designs have been proposed, including well-known standards such as GCM.
Alexandre Adomnicăi +4 more
doaj +2 more sources
Rugged Pseudorandom Permutations with Beyond-Birthday-Bound Security [PDF]
Proceedings of the ACM Asia Conference on Computer and Communications SecurityA rugged pseudorandom permutation (RPRP) is a security notion for variable-length tweakable ciphers that is strictly weaker than the traditional notion of a strong pseudorandom permutation.
Nilanjan Datta +4 more
core +4 more sources
GCM Variants with Robust Initialization Vectors
Mathematics, 2023 The complexity and isomerization of communication networks have put forth new requirements for cryptographic schemes to ensure the operation of network security protocols. Robust cryptographic schemes have been gradually favored.
Ping Zhang
doaj +1 more source
Beyond full‐bit secure authenticated encryption without input‐length limitation
IET Information Security, 2022 The security bound is an important evaluation criterion in an authenticated encryption (AE) scheme. Many AE schemes that are widely used have birthday‐bound security, which means that the scheme has b/2‐bit security, where b is the block size of the ...
Akiko Inoue
doaj +1 more source
Permutation Based EDM: An Inverse Free BBB Secure PRF
IACR Transactions on Symmetric Cryptology, 2021 In CRYPTO 2019, Chen et al. have initiated an interesting research direction in designing PRF based on public permutations. They have proposed two beyond the birthday bound secure n-bit to n-bit PRF constructions, i.e., SoEM22 and SoKAC21, which are ...
Avijit Dutta +2 more
doaj +1 more source