1·The offline policy controls backup and restore commands, and the encryption and decryption of database backup images.
离线策略控制备份和恢复命令，以及数据库备份映像的加密和解密。
2·Handlers can manage encryption and decryption, logging and auditing, and so on.
处理程序可以处理加密和解密、日志记录和审计等。
3·The string manipulation functions in Listing 13 replace the lost formatting before the decryption command is called.
在调用解密命令之前，清单13中的字符串操作函数将替换丢失的格式。
4·Symmetric algorithms are very efficient and work with a single key for both encryption and decryption calculations.
对称算法非常有效，并且可以与用于加密和解密计算的单一密钥一起使用。
5·This mechanism ensures that only the trusted party can perform the decryption of the message, being the only one owning the right private key.
此机制确保了只有受信方可以执行消息的解密，而此受信方只能是拥有正确私钥的一方。
1·Gave three properties of decryption key in RSA system: infinite property, constructive property, same odd type property.
给出了RSA系统中脱密密钥的三个性质：无穷性，构造性，同奇。