首页>
外国专利>
System for controlling access to encrypted data files by a plurality of users
System for controlling access to encrypted data files by a plurality of users
展开▼
机译:用于控制多个用户对加密数据文件的访问的系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system in which an encrypted data file can be protected, accessed, and maintained by a plurality of users using cryptographically hashed passwords. The system provides for the creation in memory for each authorized user of a cryptographically hashed password as an entry in an unencrypted header file. The system compares an authorized user's cryptographically hashed password against a corresponding set of cryptographically hashed passwords in memory to determine whether the user is allowed access to the protected data file. The passwords are cryptographically one-way hashed with a “salt” value in such a way as to make reconstruction of original passwords by an unintended party virtually impossible, because the passwords never exist in memory in an unhashed state. Furthermore, the passwords are cryptographically “one-way” hashed so as not to be reconstructible. Upon successful authorization of a user, based on successful comparison of the user's hashed password with those in memory, the user gains access to the encrypted data file.
展开▼