Results 51 to 60 of about 1,329 (153)
Key Committing Security of AEZ and More
IACR Transactions on Symmetric Cryptology, 2023 For an Authenticated Encryption with Associated Data (AEAD) scheme, the key committing security refers to the security notion of whether the adversary can produce a pair of distinct input tuples, including the key, that result in the same output.
Yu Long Chen +9 more
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Constructing and Deconstructing Intentional Weaknesses in Symmetric Ciphers [PDF]
, 2022 Deliberately weakened ciphers are of great interest in political discussion on law enforcement, as in the constantly recurring crypto wars, and have been put in the spotlight of academics by recent progress.
Christof Beierle +3 more
core
IACR Transactions on Symmetric Cryptology, 2017 This paper introduces QARMA, a new family of lightweight tweakable block ciphers targeted at applications such as memory encryption, the generation of very short tags for hardware-assisted prevention of software exploitation, and the construction of ...
Roberto Avanzi
doaj +1 more source
A General Construction of Tweakable Block Ciphers and Different Modes of Operations [PDF]
IEEE Transactions on Information Theory, 2006 This work builds on earlier work by Rogaway at Asiacrypt 2004 on tweakable block cipher (TBC) and modes of operations. Our first contribution is to generalize Rogaway's TBC construction by working over a ring and by the use of a masking sequence of functions. The ring can be instantiated as either GF or as .
Debrup Chakraborty, Palash Sarkar
openaire +1 more source
Compact Hardware Implementations of ChaCha, BLAKE, Threefish, and Skein on FPGA [PDF]
, 2014 The cryptographic hash functions BLAKE and Skein are built from the ChaCha stream cipher and the tweakable Threefish block cipher, respectively. Interestingly enough, they are based on the same arithmetic operations, and the same design philosophy allows
At Nuray +5 more
core +1 more source
IACR Transactions on Symmetric Cryptology, 2017 CAESAR has caused a heated discussion regarding the merits of one-pass encryption and online ciphers. The latter is a keyed, length preserving function which outputs ciphertext blocks as soon as the respective plaintext block is available as input.
Elena Andreeva +5 more
doaj +1 more source
Improved Meet-in-the-Middle Attacks on Reduced-Round Tweakable Block Cipher Deoxys-BC
The Computer Journal, 2021 Abstract Deoxys-BC is an internal tweakable block cipher of the authenticated encryption algorithm Deoxys, which is a third-round finalist in the CAESAR competition. In this paper, we study the property of Deoxys-BC, such as the subtweakey difference cancelation and the freedom of the tweak.
Manman Li, Shaozhen Chen
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IACR Transactions on Symmetric Cryptology, 2020 We present the family of authenticated encryption schemes SKINNY-AEAD and the family of hashing schemes SKINNY-Hash. All of the schemes employ a member of the SKINNY family of tweakable block ciphers, which was presented at CRYPTO 2016, as the underlying
Christof Beierle +8 more
doaj +1 more source
Dialga: A Family of Low-Latency Tweakable Block Ciphers Using Multiple Linear Layers
IACR Transactions on Symmetric CryptologyIn this paper, we propose Dialga, a family of low-latency tweakable block ciphers designed to support 128/256-bit tweaks and 256-bit keys. Dialga achieves significantly small latency by leveraging multiple novel strategies.
Subhadeep Banik +7 more
doaj +1 more source
ZMAC+ – An Efficient Variable-output-length Variant of ZMAC
IACR Transactions on Symmetric Cryptology, 2017 There is an ongoing trend in the symmetric-key cryptographic community to construct highly secure modes and message authentication codes based on tweakable block ciphers (TBCs).
Eik List, Mridul Nandi
doaj +1 more source