Abstract
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 algorithmECDSA 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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