CSC8370

Homework Assignment(s)

Due 11/2/04 Followup on class work.

Please give an instance of a string which crashes Mozilla that your fuzz program found. Please give the program as well, and if you worked in class with someone on the code please indicate who. (both parties should turn in independent writeups).

Due 11/4/04

A message has been encrypted and a copy is in a file 1023.cipher (on http://asterix.cs.gsu.edu/crypto). The message is thought to be important. Investigation of the work area found a floppy disk in the suspected person's desk. A bitwise copy of the floppy is in the file test.floppy.img (also on asterix). The disk contained a copy of the cipher when examined at a normal operating system level (i.e. It was put in a computer and the DOS command 'dir' was used).

Your task is to recover the plaintext of the message. It is known the suspect has an implementation of the RC4 cipher. Provide evidence that you have recovered the correct message.