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What will be the minimal length of the key

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Reference no: EM13329020

Encrypt-It-Rite, a vendor of encryption software, sells a symmetric cipher that uses a 56-bit key. The company decides to conduct a "challenge" to crack an encrypted message using a brute-force approach. The average time to crack the message is found to be 1 hrs. As a result, Encrypt-It-Rite decides to increase the key length by 8 bits, from 64 to 72 bits. They then conduct another challenge. What average cracking time would be expected for the new, improved cipher? If Encrypt-It-Rite would like to increase the average cracking time to at least 100 years, what will be the minimal length of the key?

Reference no: EM13329020

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