the most widely used cipher is the Data Encryption Standard.
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Q8: Ciphertext generated using a computationally secure encryption
scheme
Q9: A scheme known as a one-time pad
Q10: Monoalphabetic ciphers are easy to break because
Q11: As with Playfair, the strength of the
Q12: When using symmetric encryption it is very
Q14: Joseph Mauborgne proposed an improvement to the
Q15: Symmetric encryption is a form of cryptosystem
Q16: Symmetric encryption remains by far the most
Q17: On average, half of all possible keys
Q18: With the use of symmetric encryption, the
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