The sender encrypts the message digest under her private key .
发送方用自己的私钥加密消息摘要。
Dubbed x-pire , it encrypts photos with a key that can only be used before a certain date .
这一绰号叫做“x-pire”的软件用密码加密照片，而这一密码只能在特定的日期前使用。
Alice then encrypts the message digest with her private key to create her personal signature .
然后，小红用她的私钥加密该消息摘要以创建她的个人签名。
Encrypts a file so that only the account used to encrypt the file can decrypt it .
将某个文件加密，使得只有加密该文件的帐户才能将其解密。
Once installed and given a strong password of its own , plus an e-mail address , lastpass encrypts all the logons and passwords stored on your computer .
