ARJ archiver
Very simple and weak encryption algorithm is used in this archiver. “Exclusive OR” logical operation is performed on the archive contents. The second argument in this operation is a password. Of course, we can use a known-plaintext attack, or just brute-force approach if archive contents is unknown. But in the latest versions of ARJ strong encryption (GOST algorithm) is available as an option.
Applications for password recovery:
Advanced Archive Password Recovery
Advanced ARJ Password Recovery
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