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Ed2k-hash: Difference between revisions
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== Why does AniDB require ed2k-hashes? == | == Why does AniDB require ed2k-hashes? == | ||
The main reason for this is that it avoids adding of double | The main reason for this is that it avoids adding of double database entries. AniDB will not allow you to add a file with the same ed2k-hash as an existing one. | ||
The file size and ed2k-hash of a file is used to identify it globally. | The file size and ed2k-hash of a file is used to identify it globally. | ||
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* [[AniDB_O'Matic]] by BennieB/PetriW can generate ed2k-hashes. It generates ed2k-hashes, md5, sha-1, crc32 in one go and also lists stuff like codec, resolution, bitrates, ... | * [[AniDB_O'Matic]] by BennieB/PetriW can generate ed2k-hashes. It generates ed2k-hashes, md5, sha-1, crc32 in one go and also lists stuff like codec, resolution, bitrates, ... | ||
* [http://ed2k-tools.sourceforge.net/index.shtml ed2k_hash] another tool which is commandline based (current Windows and OSX versions have a GUI as well) and also available for Unix operating systems (Linux/BSD/etc). | * [http://ed2k-tools.sourceforge.net/index.shtml ed2k_hash] another tool which is commandline based (current Windows and OSX versions have a GUI as well) and also available for Unix operating systems (Linux/BSD/etc). | ||
* [http://malich.content.no-ip.org/filehash/filehash-0.5.3.zip Filehash] a little | * [http://malich.content.no-ip.org/filehash/filehash-0.5.3.zip Filehash] a little Java program written by Malich. For further info on it read [http://forum.anidb.net/viewtopic.php?t=77 here] | ||
* [http://www.slavasoft.com/hashcalc/ Hashcalc] can create md5, sha-1, crc32, ed2k-hashes and various other hashes in 1 go. | * [http://www.slavasoft.com/hashcalc/ Hashcalc] can create md5, sha-1, crc32, ed2k-hashes and various other hashes in 1 go. | ||
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:return md4 of hashlist | :return md4 of hashlist | ||
Note that there are two different ways in practice that | Note that there are two different ways in practice that implementations treat the 9728000 byte boundary, given as either the red code or the blue code above, black is common to both. In practice this difference only affects a tiny number of files, however is the one case where two 'valid' ed2k hashes might be produced from one file. See forum topic [http://forum.anidb.net/viewtopic.php?t=1187 1] on this issue as well. | ||
=== List of which clients use which method === | === List of which clients use which method === | ||