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https://issues.apache.org/jira/browse/TIKA-2123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Allison resolved TIKA-2123.
-------------------------------
Resolution: Fixed
Fix Version/s: 1.14
2.0
> CommonsDigester calculates wrong hashes on large files
> ------------------------------------------------------
>
> Key: TIKA-2123
> URL: https://issues.apache.org/jira/browse/TIKA-2123
> Project: Tika
> Issue Type: Bug
> Components: metadata
> Affects Versions: 1.13
> Reporter: Yahav Amsalem
> Fix For: 2.0, 1.14
>
>
> When passing more than one algorithm to CommonsDigester constructor and
> then trying to digest a file which is larger than 7.5 MB, results wrong
> hashe calculation for all the algorithms except the first.
> The next code will reproduce the bug:
> // The file that was used w as a simple plain text file with size > 7.5 MB
> File file = new File("testLargeFile.txt");
> BufferedInputStream bufferedInputStream = new BufferedInputStream(new
> FileInputStream(file));
> Metadata metadata = new Metadata();
> CommonsDigester digester = new CommonsDigester(20000000,
> CommonsDigester.DigestAlgorithm.MD5,
> CommonsDigester.DigestAlgorithm.SHA1,
> CommonsDigester.DigestAlgorithm.SHA256);
> digester.digest(bufferedInputStream, metadata, null);
> // Will print correct MD5 but wrong SHA1 and wrong SHA256
> System.out.println(metadata);
> Initial direction: it seems that the inner buffered stream that is being used
> doesn't reset to 0 position after the first algorithm.
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