Study And Realization Of Mixed Cryptosystem Based On AES And ECC

As the Internet becomes more and more accessible for the public, many kinds of commercial and social businesses are transformed into electronic form and are conducted on the network. All kinds of cryptographic algorithms used can insure security of these activities. Elliptic Curve Cryptography (ECC) systems, which is a public-key systems, is characterized by higher safety property , faster speed, shorter key lengths and fewer computational resources for implementation than other former traditional public-key algorithms based on the discrete logarithm in finite fields or the great integer factorization problem. On the other hand, the Advanced Encryption Standard is a good symmetry cryptosystem with its advantages of simplicity, high efficiency and security.The present data encryption systems is analyzed in the dissertation to propose the mixed cryptosystem based on the combination of the AES and Elliptic Curve Cryptography, which will actualize encrypt of data, digital signature and identification with high efficiency in Internet communication., and solve the problem of antinomy of speed and security in cryptosystem .In this dissertation, summary is first given briefly on the current situation of the information security and the basic notion as well as mathematical model of data encryption technology;Secondly, researches and analyses on the thought, the methodology and field of application of many kinds of data encryption technology show the mathematical description to symmetry cryptog(?)m and public key cryptogram and its characteristics;Thirdly, the mixed cryptosystem based on AES and ECC is p(?)t forward in according with the characteristic of the encryption method of the data and the detailed discussion is hold on two mathematical principles, algorithm realization , safe performance ,etc;Finally , workflow and optimization of the key algorithm realization is provided based on the mixed cryptosystem of AES and ECC, including KP operation, the disposition detection algorithms and great integers operation in the Elliptic Curve Cryptosystem.