Cryptography Algorithm- Survey and Trends

Cryptography algorithm is the core of cryptography technology. Based on the introduction of some theoretical backgrounds, this paper discusses and analyses the update state of the cryptography algorithm. In studying symmetric-key (secret key) cryptography algorithm, the disadvantages of DES and the advantages of AES are analysed. In studying public-key cryptography algorithm, RSA and its unfavorable situation, ECC and its benefits, and some precautions in using ECC are discussed. Besides, NTRU is described and investigated. The paper ends with the perspectives of cryptography algorithm ,its applications and standardization.