In the era of digital communication, the information sharing is rapidly increased. All the data
which being sent or received are vulnerable to many active and passive attacks. Therefore …

The exponential growth of cloud computing, an efficient data security system becomes
essential for cloud computing-based environments. Encryption algorithms perform a critical …

Security is the most important aspect in the field of internet and network application. It is an
important task to secure information over the network. To secure information, cryptography …

A cryptographic technique called signcryption combines the role of digital signature and
encryption in a single logical step. Signcryption provides message confidentiality and …

Tropical cryptography is the study of classical cryptography protocols built on tropical
algebras. In this thesis, we review a key exchange protocol presented by Zeriouh et al. They …

The Hill cipher algorithm is one of the symmetric key algorithms that have several
advantages in data encryption. But, the inverse of the key matrix used for encrypting the …

Symmetric key encryption is a cryptographic algorithm in which same keys are used for both,
encryption and decryption of the information. Sometimes it is also referred to as the secret …

Blockchain technology enables distributed, encrypted and secure logging of digital
transactions. It is underlying technology of Bitcoin and other cryptocurrencies. Blockchain is …

Non-commutative cryptography (NCC) is truly fascinating with the great hope of advancing
performance and security for high end applications. It provides a high level of safety …

A new enhanced matrix power function (MPF) is presented for the construction of
cryptographic primitives and an Asymmetric Cipher in non-commutative cryptography. As …