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Best answer
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19 votes
  • $\text{RSA}:$  It is an algorithm used to encrypt and decrypt messages.
  • $\text{SHA 1}:$ Secure Hash Algorithm $1,$ or $\text{SHA 1}$ is a $\text{cryptographic hash function}$. It produces a $\text{160 bit (20 byte)}$ hash value (message digest).
  • $\text{DES}:$ Data Encryption Standard, or $\text{DES}$ is a $\text{symmetric key algorithm for encryption}$ of electronic data.
  • $\text{MD5}:$ Message Digest $5,$ or $\text{MD5}$ is a widely used $\text{cryptographic hash function}$ that produces a $128\text{ bit}$ hash value (message digest).

II and IV i.e SHA 1 and MD5 are used to generate a message digest by the network security protocols. So, C is the correct choice.

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6 votes
Here some most popular Hashing algorithm who generate a message digest for the network security protocols

1. Message Digiest 5 MD5: This creates a 128 bit digest.

2. Secure hashing algorithm 1 (SHA-1) : This creates a 160 bit digest.

3. SHA-2 : Options include a digest between 224 bits and 512 bits.

4. SHA-3: Options include a digest between 224 bits and 512 bits.

So correct option is  II and IV only
Answer:

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