Does SHA1 require public keys? and if does what doesn't require public keys?

Question

Question

Does SHA1 require public keys? and if does what doesn't require public keys?

Answer 1

Answer #1

SHA1 uses hash function.

It is one way cryptography
Hash functions uses no Key as plain text is can't be derived using cipher text.
$Plaintext\overset{hash~function}{\rightarrow}Ciphertext$
it gives 160-bit hash value.
Therefore, SHA1 doesn't require any public keys.

Algorithms which uses public key cryptography (PKC) such as RSA needs public keys.

Answer 2

Similar Homework Help Questions

Which of the following types of encryption uses a pair of keys known as a public...

Which of the following types of encryption uses a pair of keys known as a public and private? a. asymmetric b. message digest c. SHA1 hashing d. symmetric
Does sublimation or (melting and evaporation) require more energy? why does or doesn't this sense

Does sublimation or (melting and evaporation) require more energy? why does or doesn't this sense
5. Recall the fact that the public and private keys are interchangeable, i.e., applying the public...

5. Recall the fact that the public and private keys are interchangeable, i.e., applying the public key and then the private key on a message results in the message as does first applying the private key and then the public key. How is this property helpful in secure communication between the two parties?

* 3. Anaerobi Anaerobic respiration doesn't require oxygen, but aerobic respiration does. Which stages of cellular...

* 3. Anaerobi Anaerobic respiration doesn't require oxygen, but aerobic respiration does. Which stages of cellular respiration are anaerobic? Which are aerobic? How do you know?
1. In a scenario where Nancy and Matthew are using public key encryption, which keys will...

1. In a scenario where Nancy and Matthew are using public key encryption, which keys will Matthew have the ability to see in his public keyring (--list-keys)? 2. If Nancy wishes to send a message to Matthew, which key does she use to encrypt the message? 3. If Matthew receives an encrypted message from Nancy, which key does he use to read it? 4. If Matthew wishes to send a message to Nancy, which key does he use to encrypt...
Is the following hashCode() valid? That is, would a hashtable be able to properly store keys...

Is the following hashCode() valid? That is, would a hashtable be able to properly store keys with this hashCode? Explain. public int hashCode() { return 17; } Does a separate chaining hashtable require a resize method to be implemented? What about a linear probing hashtable? Explain.

Describe how PGP public keys are distributed to establish a trust relationship comparing it with the...

Describe how PGP public keys are distributed to establish a trust relationship comparing it with the approach taken for the Public Key Infrastructures (PKI)
In the use of asymmetric keys (use of private-public key pairs). If a service wants to...

In the use of asymmetric keys (use of private-public key pairs). If a service wants to ensure it is no longer their concern (after encryption) that a message would be intercepted what key would they use?
In what way is the market system costless? Select one: A. It does not require the...

In what way is the market system costless? Select one: A. It does not require the costly presence of bureaucrats to coordinate it. B. External costs are generally very small in the market system. C. Many services, like television programming, are provided free of charge by the market. D. Public goods are not sold but are provided free of charge.

(c) In RSA, Given n = 143, compute the public and private keys. Do you observe...

(c) In RSA, Given n = 143, compute the public and private keys. Do you observe anything special from the result? If plaintext m=2, what would be the cipher? [6 marks]