https://issues.apache.org/bugzilla/show_bug.cgi?id=57195

            Bug ID: 57195
           Summary: org.apache.poi.EncryptedDocumentException: cipher
                    algorithm not found
           Product: POI
           Version: unspecified
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: POIFS
          Assignee: [email protected]
          Reporter: [email protected]

I have a bunch of xlsx file with this issue. Unfortunately these files are
non-public and the moment I edit them using my Excel 2010 to remove the
confidential info, the issue goes away. I am happy to email them to someone.

The exception thread is:

org.apache.poi.EncryptedDocumentException: cipher algorithm not found
    at
org.apache.poi.poifs.crypt.CipherAlgorithm.fromEcmaId(CipherAlgorithm.java:65)
    at
org.apache.poi.poifs.crypt.standard.StandardEncryptionHeader.<init>(StandardEncryptionHeader.java:56)
    at
org.apache.poi.poifs.crypt.standard.StandardEncryptionInfoBuilder.initialize(StandardEncryptionInfoBuilder.java:42)
    at org.apache.poi.poifs.crypt.EncryptionInfo.<init>(EncryptionInfo.java:72)
    at org.apache.poi.poifs.crypt.EncryptionInfo.<init>(EncryptionInfo.java:47)

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