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We propose SPAE, a single pass, patent free, authenticated encryption with associated data (AEAD) for AES. The algorithm has been developped to address the needs of a growing trend in IoT systems: sto...
Lightweight cryptography in computationally constrained devices is actively studied. In contrast to advances of lightweight blockcipher in the last decade, lightweight mode of operation is seemingly n...
Using a small block length is a common strategy in designing lightweight block cipher. So far, many 64-bit primitives have been proposed. However, if we use such a 64-bit primitive for an authenticate...
Block cipher modes of operation provide a way to securely encrypt using a block cipher. The main factors in analyzing modes of operation are the level of security achieved (chosen-plaintext security, ...
We examine how two parallel modes of operation for Authenticated Encryption (namely CTR+PMAC and OTR mode) work when evaluated in a multi-party computation engine. These two modes are selected because...
BLAKE2 is a hash function introduced at ACNS 2013, which has been adopted in many constructions and applications. It is a successor to the SHA-3 finalist BLAKE, which received a significant amount of ...
We examine the IND-qCPA security of the wide-spread block cipher modes of operation CBC, CFB, OFB, CTR, and XTS (i.e., security against quantum adversaries doing queries in superposition). We show t...
In this paper, a new bit-parallel Montgomery multiplier for GF(2m) is presented, where the field is generated with an irreducible trinomial. We first present a slightly generalized version of a newly...
Block ciphers such as AES are deterministic, keyed functions that operate on small, fixed-size blocks. Block-cipher modes of operation define a mechanism for probabilistic encryption of arbitrary len...
In the last years, much research work has been invested into the security analysis of key alternating ciphers in the random oracle model. These are pseudorandom permutations (PRPs), sometimes also cal...
Most stream ciphers used in practice are vulnerable against generic collision attacks, which allow to compute the secret initial state on the basis of O(2n/2 ) keystream bits in time and space O(2n...
In cloud storage service, users upload their data together with authentication information to cloud storage server.
In cloud storage service, users upload their data together with authentication information to cloud storage server. To ensure the availability and integrity of users' data stored in the cloud storage,...
In this paper, we propose a new double-piped mode of operation for multi- property-preserving domain extension of MACs (message authentication codes), PRFs (pseu- dorandom functions) and PROs (pseud...
In this paper, we present a new addition operation on Hessian curves with low cost. It can be applied to resist the side channel attacks for scalar multiplication, and also can be used to compute pr...

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