With the development of grids, distributed applications are spread across multiple computing resources and require efficient security mechanisms among the processes. Although protocols for authenticated group Diffie-Hellman key exchange protocols seem to be the natural mechanisms for supporting these applications, current solutions are either limited by the use of public key infrastructures or ...

We propose a block-cipher mode of operation, EAX, for solving the problem of authenticated-encryptionwith associated-data (AEAD). Given a nonce N , a message M , and a header H , our mode protects theprivacy of M and the authenticity of both M and H . Strings N , M , and H are arbitrary bit strings, andthe mode uses 2d|M |/ne + d|H|/ne + d|N |/ne block-cipher calls when these string...

TLS is the most important cryptographic protocol in use today. However, up to now there is no complete cryptographic security proof in the standard model, nor in any other model. We give the first such proof for the TLS ciphersuites based on ephemeral Diffie-Hellman key exchange (TLS-DHE), which include the cipher suite TLS DHE DSS WITH 3DES EDE CBC SHA mandatory in TLS 1.0 and TLS 1.1. Due to ...

This paper presents a low-resource hardware implementation of the widely used crypto_box function of the Networking and Cryptography library (NaCl). It supports the X25519 Diffie-Hellman key exchange using Curve25519, the Salsa20 stream cipher, and the Poly1305 message authenticator. Our targeted application is a secure communication between devices in the Internet of Things (IoT) and Internet ...

In this paper, an authenticated TELNET protocol is proposed to establish TELNET connections with authentication and security. To achieve this goal, specific cryptographic algorithms and certificates are used to resist attacks such as eavesdropping, tampering, forgery and personating. The concept of designing this proposed protocol is to negotiate one cipher spec (one suite of cryptographic algo...

We propose a block-cipher mode of operation, EAX, for solving the problem of authenticated-encryptionwith associated-data (AEAD). Given a nonce N , a message M , and a header H , our mode protects theprivacy of M and the authenticity of both M and H . Strings N , M , and H are arbitrary bit strings, andthe mode uses 2 |M |/n + |H|/n + |N |/n block-cipher calls when these strings are...

Authenticated encryption schemes establish both privacy and authenticity. This paper specifies a family of the dedicated authenticated encryption schemes, Artemia. It is an online nonce-based authenticated encryption scheme which supports the associated data. Artemia uses the permutation based mode, JHAE, that is provably secure in the ideal permutation model. The scheme does not require the in...

We consider the design of a tweakable block cipher from whose inputs and outputs are size n bits. The main goal is to achieve 2n security with large tweak (i.e., more than bits). Previously, Mennink at FSE’15 Wang et al. Asiacrypt’16 proposed constructions that can security. Yet, these have up n-bit only. As evident recent research, generally helpful as building for modes operation, typical app...

GOST block cipher designed in the 1970s and published in 1989 as the Soviet and Russian standard GOST 28147-89. In order to enhance the security of GOST block cipher after proposing various attacks on it, designers published a modified version of GOST, namely GOST2, in 2015 which has a new key schedule and explicit choice for S-boxes. In this paper, by using three exactly identical portions of ...