该方案将对称加密算法、椭圆曲线公钥加密算法和单向函数有机结合，实现了用户使用权限和关键敏感字段的安全级别的关联。

Here we give a simpler implement, which encrypts the sensitive data at each level with a key unique to that level, whose security is based on elliptic curve discrete logarithm problem.

youdao

该方案将对称加密算法、椭圆曲线公钥加密算法和单向函数有机结合，实现了用户使用权限和关键敏感字段的安全级别的关联。

Here we give a simpler implement, which encrypts the sensitive data at each level with a key unique to that level, whose security is based on elliptic curve discrete logarithm problem.

youdao