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Use web-based md5 services

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Reference no: EM131104594

 1. For this problem you need to run MD5. You may either download a certified version of MD5 or use web-based MD5 services. You should specify what you used; for example, give the URL. You are given a sentence "Your_Last_Name" loved 7339

a. Generate a hash for the above sentence by selecting the last 4 bits from the MD5 hash
b. Perform a birth-day attack to change the sentence to "Your_Last_Name" hated 7339

2. You are given a password file containing 64 random passwords each of which are 6 characters long where ach character can assume 128 different values.
If you were to attack this password file, what is the complexity of attack for the following scenarios:
a. Brute force attack to find Alice's password
b. Brute force attack to find somebody's password
c. Attack to find Alice's password with a dictionary containing 1024 chosen passwords
d. Attack to find any password with the same dictionary

Reference no: EM131104594

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