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md5sum is a computer program that calculates and verifies 128-bit MD5 hashes, as described in RFC 1321. The MD5 hash functions as a compact digital fingerprint of a file. As with all such hashing algorithms, there is theoretically an unlimited number of files that will have any given MD5 hash.
The matching function of the program, however, cannot be done easily in shell. [citation needed] Because md5deep was written by an employee of the U.S. government, on government time, it is in the public domain. Other software surrounding it, such as graphical front-ends, may be copyrighted.
MD5 digests have been widely used in the software world to provide some assurance that a transferred file has arrived intact. For example, file servers often provide a pre-computed MD5 (known as md5sum) checksum for the files, so that a user can compare the checksum of
Pages in category "Free software programmed in Java (programming language)" The following 200 pages are in this category, out of approximately 329 total. This list may not reflect recent changes .
Sometimes, the source code is released under a liberal software license at its end of life. This type of software can also have its source code leaked or reverse engineered. While such software often later becomes open source software or public domain, other constructs and software licenses exist, for instance shared source or creative commons ...
This greatly increases the chances of slightly different spam emails producing the same checksum. The ISP spam detection software, such as SpamAssassin, of co-operating ISPs, submits checksums of all emails to the centralised service such as DCC. If the count of a submitted fuzzy checksum exceeds a certain threshold, the database notes that ...
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Free Java implementations are software projects that implement Oracle's Java technologies and are distributed under free software licences, making them free software. Sun released most of its Java source code as free software in May 2007, so it can now almost be considered a free Java implementation. [ 1 ]