COMPUTER THREATS SECURITY
TYPES OF NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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3
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4
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5
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Detailed explanation-1: -The DES function has components. Solution: 25.
Detailed explanation-2: -The encryption process step (step 4, above) is further broken down into five stages: Key transformation. Expansion permutation. S-Box permutation.
Detailed explanation-3: -The Data Encryption Standard (DES /ˌdiːˌiːˈɛs, dɛz/) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for modern applications, it has been highly influential in the advancement of cryptography.
Detailed explanation-4: -DES has 56 bit keys. You can re-use a key as often as you want. You can encrypt text that is as long as you want*. * In any modern encryption system, there are theoretical limits on the number of times you use the key, and length of the plaintexts.