违法和不良信息举报 联系客服
免费注册 登录

Which Public Key Cryptographic Standards （PKCS） defines the 

题目
单选题
Which Public Key Cryptographic Standards （PKCS） defines the syntax for encrypted messages andmessages with digital signatures？（）
A

PKCS #7

B

PKCS #8

C

PKCS #10

D

PKCS #12

如果没有搜索结果或未解决您的问题，请直接 联系老师 获取答案。
相似问题和答案

第1题：

Which constraint can be defines only at the column level? ()

A. UNIQUE

B. NOT NULL

C. CHECK

D. PRIMARY KEY

E. FOREIGN KEY


参考答案：B

第2题：

Which of the following authenticates a web server to the remote client in PKI?()

A.FQDN

B.DNS name

C.Public key

D.Private key


参考答案：C

第3题：

Which of the following plays a key role in body growth according to the text?

[A] Genetic modification.

[B] Natural environment.

[C] Living standards.

[D] Daily exercise.


正确答案：C

从第三段“but as diet and health improved, children and adolescents have increased in height by…..”可以看出生活水平对于身体成长起着非常重要的作用；另外，A，B，D选项所涉及的genetic modification ,natural environment 和daily exercise文中并没有提到；

第4题：

Which statement is true about a certificate authority？（）

  • A、An entity responsible for registering the private key encryption used in a PKI
  • B、An agency responsible for granting and revoking public-private key pairs
  • C、A trusted third party responsible for signing the public keys of entities in a PKIbased system
  • D、A trusted third party responsible for signing the private keys of entities in a PKIbased system

正确答案:C

第5题：

WhichPublicKeyCryptographicStandards(PKCS)definesthesyntaxforencryptedmessagesandmessageswithdigitalsignatures?()

A.PKCS#7

B.PKCS#8

C.PKCS#10

D.PKCS#12


参考答案：A

第6题：

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


正确答案：C

第7题：

Symmetric, or private-key, encryption is based on a secret key that is shared by both communcating parties. The （ ） party uses the secret key as part of the mathematical operation to encrypt （ ） text to cipher text. The receiving party uses the same secret key to decrypt the cipher text to plain text. Asymmetric, or public-key, encryption uses two different keys for each user: one is a （ ） key known only to this one user; the other is a corresponding public key, which is accessible to anyone. The private and public keys are mathematically related by the encryption algorithm. One key ia used for encyption and the other for decryption, depending on the nature of the communication service being implemented. In addition, public key encryption technoligies allow digital （ ） to be placed on messages. A digital signature uses the sender&39;s private key to encrypt some portion of the message. When the message is received, the receiver uses the sender&39;s （ ） key tp decipher the digital signature to verify the sender&39;s identity.

A.host B.terminal C.sending D.receiving A.plain B.cipher C.public D.private A.plain B.cipher C.public D.private A.interpretation B.signatures C.encryption D.decryption A.plain B.cipher C.public D.private


正确答案：C,A,D,B,C

第8题：

Which of the following plays a key role in body growth according to the text？

A．Genetic modification.

B．Natural environment.

C．Living standards.

D．Daily exercise.


正确答案：C
从第三段“but as diet and health improved, children and adolescents have increased in height by…..”可以看出生活水平对于身体成长起着非常重要的作用;另外，A，B，D选项所涉及的genetic modification ,natural environment 和daily exercise文中并没有提到。

第9题：

Symmetric, or private-key, encryption is based on a secret key that is shared by both communcating parties. The （ ） party uses the secret key as part of the mathematical operation to encrypt （ ） text to cipher text. The receiving party uses the same secret key to decrypt the cipher text to plain text. Asymmetric, or public-key, encryption uses two different keys for each user: one is a （ ） key known only to this one user; the other is a corresponding public key, which is accessible to anyone. The private and public keys are mathematically related by the encryption algorithm. One key ia used for encyption and the other for decryption, depending on the nature of the communication service being implemented. In addition, public key encryption technoligies allow digital （_______） to be placed on messages. A digital signature uses the sender's private key to encrypt some portion of the message. When the message is received, the receiver uses the sender's （） key tp decipher the digital signature to verify the sender's identity.横线处应选（ ）。


A. interpretation
B.signatures
C. encryption
D.decryption

答案：B
解析：
对称加密或私钥加密的基础是通信双方共享同一密钥。发送方使用一个密钥作为数学运算的一部分把明文加密成密文。接收方使用同一密钥把密文解密变成明文。在非对称或公钥加密方法中，每个用户使用两种不同的密钥:一个是只有这个用户知道的私钥;另一个是与其对应的任何人都知道的公钥。根据加密算法，私钥和公钥是数学上相关的。一个密钥用于加密，而另一个用于解密，依赖于实现的通信服务的特点而用法有所不同。此外，公钥加密技术也可以用于报文的数字签名。数字签名时使用发送方的私钥来加密一部分报文。当接收方收到报文时，就用发送方的公钥来解密数字签名，以便对发送方的标识进行验证。

第10题：

Which Public Key Cryptographic Standards （PKCS） defines the syntax for encrypted messages andmessages with digital signatures？（）

  • A、PKCS #7
  • B、PKCS #8
  • C、PKCS #10
  • D、PKCS #12

正确答案:A

更多相关问题
相关内容