Encryption Scheme of Database Field with Security Classification
LU Jian-zhu · Jisuanji gongcheng · 2008
This paper divides sensitive syllable into different rank according to these safe needs,encrypts the confidential information with symmetrical encryption,and encrypts the private keys with asymmetrical encryption.Its security is based on elliptic curve discrete logarithm problem.A cipher-text database model built on this new encryption scheme not only can ensure the security of the information,but also can save large number of space,and provide grading access.