Over the past decade, there has been tremendous interest in studying the behavior of
chaotic systems. They are characterized by sensitive dependence on initial conditions …

Twofish is a 128-bit block cipher that accepts a variable-length key up to 256 bits. The cipher
is a 16-round Feistel network with a bijective F function made up of four key-dependent 8-by …

With the proliferation of highly specialized embedded computer systems has come a
diversification of workloads for computing devices. General-purpose processors are …

The technical analysis used in determining which of the potential Advanced Encryption
Standard candidates was selected as the Advanced Encryption Algorithm includes efficiency …

We discuss the relationship between cryptography and chaos theory, and similarities of their
crucial concepts such as mixing property and sensitivity to changes in initial conditions and …

This paper describes the state of the art for cryptographic primitives that are used for
protecting the authenticity of information: cryptographic hash functions and digital signature …

The technical analysis used in determining which of the potential Advanced Encryption
Standard candidates was selected as the Advanced Encryption Algorithm includes efficiency …

In cryptographic applications, hash functions are used within digital signature schemes to
provide data integrity (eg, to detect modification of an original message). In this brief, we …

Digital chaotic ciphers have been investigated for more than a decade. However, their
overall performance in terms of the tradeoff between security and speed, as well as the …

In this paper, a novel algorithm for image encryption based on SHA-512 is proposed. The
main idea of the algorithm is to use one half of image data for encryption of the other half of …