Security

Developing a New Hybrid Cipher Using AES, RC4 and SERPENT for Encryption and Decryption

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Executive Summary

In this paper, the authors aim to developing a new hybrid cipher by combining the characteristics of 3 ciphers namely AES (Advanced Encryption Standard), Rc4 (also known as ARC4) and Serpent. The characteristics of both the ciphers are studied and a new cipher combining the characteristics of both the ciphers is generated which is more secure than the original ciphers. AES, SERPENT characteristics are its security and its resistance against attacks and the major characteristic of Rc4 is its speed. Therefore these characteristics are imbibed in the newly generated cipher. Thus it proves to be faster than the original AES and secure against most attacks. Three combination techniques have been formulated to generate a hybridized cipher and the procedure along with the strengths and weaknesses outlined.

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