What is the biggest drawback to symmetric encryption quizlet?

What is the biggest drawback to symmetric encryption quizlet?

What is the biggest drawback to symmetric encryption? It requires a key to be securely shared. A good hash function is resistant to _______.

What is the main drawback of symmetric cryptography quizlet?

Data Encryption Standard (DES) uses symmetric key encryption. What is the main disadvantage of symmetric key encryption? The main disadvantage is that the two parties must somehow exchange the key in a secure way.

What is the weakness of symmetric encryption?

Symmetric encryption is also called “secret key” encryption because the key must be kept secret from third parties. Strengths of this method include speed and cryptographic strength per bit of key; however, the major weakness is that the key must be securely shared before two parties may communicate securely.

How does the hash protect the message in transit?

C) It uses three keys and multiple encryption and/or decryption sets. D) It can display the key publicly. If a message has a hash, how does the hash protect the message in transit? C) Hashing encrypts the message so that only the private key holder can read it.

Which of the following is not a hashing algorithm?

DES is an encryption algorithm, not a hashing algorithm. HAVAL is a one-way hashing algorithm is a deterministic algorithm that compresses an arbitrarily long message into a value of specified length.

What is symmetric key encryption quizlet?

Symmetric Encryption. – a common encryption method that involves using the same key to encrypt and decrypt the message. – it has other names like: – Shared or Preshared Key. – Secret Key.

What are the two main types of symmetric algorithms used currently?

There are two types of symmetric encryption algorithms:

• Block algorithms. Set lengths of bits are encrypted in blocks of electronic data with the use of a specific secret key.
• Stream algorithms. Data is encrypted as it streams instead of being retained in the system’s memory.

What are the disadvantages of asymmetric encryption?

List of Cons of Asymmetric Encryption

• It is a slow process.
• Its public keys are not authenticated.
• It risks loss of private key, which may be irreparable.
• It risks widespread security compromise.

What is the disadvantage of using a public key algorithm compared to a symmetric algorithm?

What is an important disadvantage of using a public key algorithm compared to a symmetric algorithm? A symmetric algorithm is a faster process. A symmetric algorithm provides nonrepudiation of delivery. A symmetric algorithm is more diffi cult to implement.

What are the advantages and disadvantages of symmetric and asymmetric encryption?

The main advantage of symmetric encryption over asymmetric encryption is that it is fast and efficient for large amounts of data; the disadvantage is the need to keep the key secret – this can be especially challenging where encryption and decryption take place in different locations, requiring the key to be moved

What are the disadvantages of a shared key in encryption?

The main disadvantage of using a shared key in encryption is that you cannot use it to ensure non-repudiation. If you got a message and you are able to decipher it, there is no proof that the sender did encrypt it, because one can still argue you encrypted it yourself.

What are the requirements for the decryption?

For the decryption of the information the same key K1, which was used for the encryption of the information, is required again. Since only Bob and Alice have previously exchanged the key, only they can read the original text. Exchange of the key: It must be ensured that the key to encryption, will be exchanged via a secure channel (e.g. in person).

What are the problems with symmetric algorithms?

One big issue with using symmetric algorithms is the key exchange problem, which can present a classic catch-22. The other main issue is the problem of trust between two parties that share a secret symmetric key.