[PDF] Top 20 Tweakable Blockciphers with Asymptotically Optimal Security

... for tweakable block- ciphers similar to the “two weak make one strong” theorem for the composition of usual ...the security of r-CLRW against CCA adversaries up to O(2 rn/(r+2) ) ... See full document

... wNM-DCCA security, that captures the intuition that a DCCA adversary who works in the DCCA experiment cannot come up with a ciphertext that is “meaningfully related” to the challenge ci- ...wNM-DCCA ... See full document

... the security of a particular concrete block cipher is currently beyond our ...proves optimal security with a sufficient number of ...the security of (variants of) Feistel networks in ... See full document

... proposed tweakable HCTR, that turns an (m, n)-bit TBC into a variable length TBC, allowing to process arbitrary large tweaks, and proven its optimal security (in terms of the block size) for the case ... See full document

... until each is 4-smooth, but also allowing a number of degree 8 elements. Finding such an expression takes on average 7 hrs, which, while not optimal, means that the classical special-Q elimination method could be ... See full document

... of Tweakable Blockciphers. Tweakable blockciphers find a wide spec- trum of applications, most importantly in the area of authenticated encryption and mes- sage ...dedicated tweakable ... See full document

... achieving security beyond 2 n/2 (precisely, 2 n ) assuming κ = m = n [10, ...of security is optimal, but still it is only the birthday bound with respect to the input size of the ideal cipher, namely ... See full document

... of optimal length—if the shared secret has entropy m, then the length of the extracted key is m − Θ(κ), where κ is the security ...has optimal entropy loss, it has a round complexity of ...both ... See full document

... A tweakable blockcipher (TBC) is a generalization of a traditional block cipher, which adds a tweak as an extra public input on the basis of the usual inputs (a plaintext and a ...key). Tweakable ... See full document

... The attack outlined in this article exploits the subspace differential invariant struc- ture inherent to the ABC methodology. The attack method works both for the original scheme and when applied to the updated scheme. ... See full document

... has security beyond the birthday bound, which is the first scheme with this property which does not use ...chains. Tweakable variants of Even-Mansour cipher [11] are studied by Cogliati, Lampe and Seurin [8] ... See full document

... 2n/3-bit security, but the latter uses 2 blockcipher calls and 2 universal hash function ...achieves optimal security using 2 cipher calls and 1 key ...is asymptotically achieved by LRW2[ρ] ... See full document

... a tweakable- PRP. One might hope that the security bound for TBCMAC[ E] e is better than for CBC-MAC over an n-bit blockci- pher, since the former is intuitively a “stronger” object than the ... See full document

... a tweakable block cipher into a nonce-based authenticated encryption scheme (with associated ...underlying tweakable block cipher rather than on the plaintext ...provable security beyond the birthday ... See full document

... SPRP security, assuming that all further operations are ...using tweakable block ci- phers as primitive has already led to MACs or encryption modes with high security and efficiency ...a ... See full document

... Mathematics in Industry Study Group (MISG) is a collaborative problem- solving workshop where applied mathematicians tackle real life problems shared by local companies. The workshop helps to rapidly determine the key ... See full document

... Batch sampling planners are not suited to finding fine motion plans in large con- figuration spaces. This is because the granularity of the plan that they can find is governed by how densely the configuration space is ... See full document

... the optimal reversal of quantum channels acting on correlated copies of n qudits, possibly requiring an extension of the LAN theory beyond the paradigm of independent and identically prepared ... See full document

... lem and related information retrieval tasks have attracted much attention in the machine learning literature, with numerous applications to social and biological networks. However, the current framework has often been ... See full document

... the optimal g may indeed be a non-linear function of X, these methods implicitly assume independence between θ and V ...the optimal predictor g(X, V ) assuming independence, and the true Bayes rule, namely, ... See full document