【单选题】使用密码技术不仅可以保证信息的 ,而且可以保证信息的完整性和准确性,防止信息被篡改、伪造和假冒。
【单选题】The organization is badly _____ of hands. [ ]
【判断题】使用密码技术不仅可以保证信息的机密性,而且可以保证信息的完整性和确定性,防止信息被篡改、伪造和假冒。()
【简答题】给出一段密文和凯撒密码的密钥,写出明文。 “ 恺撒密码 ” 据传是古罗撒大帝用来保护重要军情的加密系统。它是一种替代密码,通过将字母按顺序推后起 3 位起到加密作用,如将字母 A 换作字母 D ,将字母 B 换作字母 E 。据说恺撒是率先使用加密函的古代将领之一,因此这种加密方法被称为恺撒密码。 A B C D E F G H I J K L M N O P Q R S T U V W X Y...
【单选题】The Northeast Tiger is in danger of _______. [ ]
【单选题】The need of a dying patient for company shows ______.
A.
his fear of approaching death
B.
his reluctance to part with his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people
【单选题】The need of a dying patient for company shows ________.
A.
his fear of approaching death
B.
his reluctance to part With his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people