密码系统(Cryptosystem,或称为密码体制)由加密算法和()组成。
A.解密算法
B.明文空间(全体明文的集合)
C.密文空间(全体密文的集合)
D.密钥空间(全体密钥的集合)
A.解密算法
B.明文空间(全体明文的集合)
C.密文空间(全体密文的集合)
D.密钥空间(全体密钥的集合)
In a public-key cryptosystem,(71)encrypted with the public key can only be deciphered with the private key from the same(72). Conversely,(71)encrypted with the private key can be decrypted only with the public key. Users can make their public keys(73)available or place them at a key distribution center or others to access. However, the private key must be(74)safe. In public-key systems there's no(75)to find a safe channel for communicating a shared secret key.
A.binarytext
B.hypertext
C.plaintext
D.supertext
选出应填入下面一段英语中______内的正确答案。
In a public-key cryptosystem,(1)encrypted with the public key can only be deciphered with the private key from the same(2). Conversely,(1)encrypted with the private key can be decrypted only with the public key. Users can make their public keys(3)available or place them at a key distribution center or others to access. However, the private key must be(4)safe. In public-key systems there's no(5)to find a safe channel for communicating a shared secret key.
A.企业注册信息表
B. 含证书信息的K宝
C. K宝密码信封
D. 参考号和授权码(下称两码)信封
(5)一个加密体制或称密码体制是由下列()部分组成的。
Ⅰ、明文空间 Ⅱ、密文空间 Ⅲ、密钥空间 Ⅳ、加密算法 Ⅴ、解密算法
A)仅Ⅰ、Ⅱ和Ⅲ
B)仅Ⅰ、Ⅱ、Ⅳ和Ⅴ
B)仅Ⅰ、Ⅲ、Ⅳ和Ⅴ
C)全部
A.企业注册信息表
B. 含证书信息的K宝
C. K宝密码信封
D. 参考号和授权码(下称两码)信封
A.仅Ⅰ、Ⅱ和Ⅲ
B.仅Ⅰ、Ⅱ、Ⅳ、Ⅴ
C.仅Ⅰ、Ⅲ、Ⅳ、Ⅴ
D.全部
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