The primary intention of this research is to design and develop an approach for integrating compression and encryption on textual data. This improved approach can provide the better security with the aid of encryption and also, can provide better compression with the help of encoding procedure. The advantage of combining the encoding procedure with the encryption technique is that the attacks r...

Homomorphic encryption offers potential for secure cloud computing. However due to the complexity of homomorphic encryption schemes, performance of implemented schemes to date have been unpractical. This work investigates the use of hardware, specifically Field Programmable Gate Array (FPGA) technology, for implementing the building blocks involved in somewhat and fully homomorphic encryption s...

In this paper, we focus on verifiability of predicate encryption. A verifiable predicate encryption scheme guarantees that all legitimate receivers of a ciphertext will obtain the same message upon decryption. While verifiability of predicate encryption might be a desirable property by itself, we furthermore show that this property enables interesting applications. Specifically, we provide two ...

Functional encryption is a new paradigm of public-key encryption that allows a user to compute f (x) on encrypted data CT (x) with a private key SK f to finely control the revealed information. Multi-input functional encryption is an important extension of (single-input) functional encryption that allows the computation f (x1, . . . ,xn) on multiple ciphertexts CT (x1), . . . ,CT (xn) with a pr...

This paper analyzes application of Selective Encryption with Automatic Variable Key (AVK) for text based documents in Koyama Public Key Cryptosystem (PKC). In this paper, a new robust and simple PKC based singular cubic curve cryptosystem over the ring Zn, using selective encryption with Automatic Variable Key (AVK), is proposed. In the proposed algorithm, selected parts of text document are en...

Security remains as a big challenge as there are many advancements as well as applications being proposed in the areas wireless adhoc networks and cloud computing. The modern field of cryptography is divided into two main areas based on the basic encryption mechanism as symmetric key cryptography and Public-key cryptography. Symmetric-key cryptosystems use the same key for encryption and decryp...

Owing to a number of reasons, the deployment of encryption solutions are beginning to be ubiquitous at both organizational and individual levels. The most emphasized reason is the necessity to ensure confidentiality of privileged information. Unfortunately, it is also popular as cyber-criminals' escape route from the grasp of digital forensic investigations. The direct encryption of data or ind...

The authenticated encryption scheme allows one signer to generate an authenticated cipher-text so that no one except the designated verifier can recover the message and verify the message. In a (t, n) threshold authenticated encryption scheme, any t or more signers can generate an authenticated encryption for a message and send it to the designated verifier. Compared with the conventional encry...

In proxy re-encryption, a proxy can transform a ciphertext computed under Alice’s public key into one that can be opened under Bob’s decryption key. In 2007, Matsuo proposed the concept of four types of proxy re-encryption schemes: CBE(Certificate Based Public Key Encryption) to IBE(Identity Based Encryption)(type 1), IBE to IBE(type 2), IBE to CBE (type 3), CBE to CBE (type 4). We observe that...