The structure and mechanical properties of bio‐nanocomposite films made from poly(ethylene oxide) (PEO) that is physically cross‐linked with silicate nanoparticles, Laponite, are investigated. Direction‐dependent mechanical properties of the films are presented, and the effect of shear orientation during sample preparation on tensile strength and elongation is assessed. Repeated mechanical deformation results in highly extensible materials with preferred orientation and structuring at the nano‐ and micrometer scales. Additionally, in vitro biocompatibility data are reported, and NIH 3T3 fibroblasts are observed to readily adhere and proliferate on silicate cross‐linked PEO while maintaining high cell viability.

The AES and ECC are the best two algorithms of symmetric encryption technology and asymmetric encryption technology. The paper presents a hybrid model which uses a combination of two symmetric algorithms enhanced AES and Blowfish for data confidentiality, Message Digest-5 for data integrity, Elliptic Curve Diffie Hellman algorithm-ECDHA for key exchange and Elliptic Curve Digital signature algorithm-ECDSA is used for digital signature. AES is enhanced by modifying the S-boxes columns, and then combination of enhanced AES and blowfish is used for data confidentiality. Performance of this system is evaluated on different configurations on the basis of encryption/decryption time, throughput and memory usage for different data formats like text file, image file, audio file and video file.

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The fast evolution of digital data exchange has forced the information security to be of much important in data storage and transmission. As large amount of data is transmitted over the network, it is preliminary to secure all types of data before sending them. The problem with AES, most extensively used encryption is that it uses many multi variant equations which are linear in nature. Thus it can be broken using algebraic cryptanalysis. This provides a serious threat as AES was considered to be unbreakable and thus it was used in many encryption systems.The current paper presents the design and implementation of a hybrid based 128 bit key AES-DES algorithm as a security enhancement.