This tool searches multiple MD5 rainbow tables for matches to a large number of MD5 hashes. MD5 is a hashing algorithm and therefore is technically not encryption, but hashes can be resolved and reversed using lookup rainbow tables. The database contains millions of MD5 hashes and matching sources. Hashes have been generated from a large number of sources, including procedural generation using multiple UTF-8 charsets, common dictionary lists and also sets of raw binary data. Most hashes are also stored with their double hash or treble hash, along with binary versions.
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"The MD5 message-digest algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. It can still be used as a checksum to verify data integrity, but only against unintentional corruption. It remains suitable for other non-cryptographic purposes, for example for determining the partition for a particular key in a partitioned database."