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DES uses a 56-bit key. Let's say you encrypt a message using single DES. With a 56-bit key there are 2^56 possible different keys. On
DES uses a 56-bit key. Let's say you encrypt a message using single DES. With a 56-bit key there are 2^56 possible different keys. On average an attacker would only need to try half this number of keys to guess the correct key and break the system. If a cryptanalyst can try 1,000,000 keys per second, how long on average would it take to discover the key and recover the plaintext?
- Select about 30 minutes as your answer
- about 30 minutes
- Select about 1142 years as your answer
- about 1142 years
- Select about 250 years as your answer
- about 250 years
- Select about 2140 years as your answer
- about 2140 years
- Select as your answer
- None of the above
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