Question: Problem 9 (9 pts) The UNIX crypt function is a hash function that only looks at the first eight bytes of the input message. For

Problem 9 (9 pts) The UNIX crypt function is a hash

Problem 9 (9 pts) The UNIX crypt function is a hash function that only looks at the first eight bytes of the input message. For example, crypt (helloworld) returns the same value as crypt (hellowor). Some web sites use the following authentication method to authenticate users: (1) the user types in a user-id and a password P into his web browser, (2) the site, upon verification of the password P, computes T = crypt (user-id||K), where || denotes string concatenation, and K is a l-byte site secret key |

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