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Unhelpful error when extracting encrypted data only RAR #1661

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ignapk opened this issue Feb 7, 2022 · 2 comments · May be fixed by #2096
Open

Unhelpful error when extracting encrypted data only RAR #1661

ignapk opened this issue Feb 7, 2022 · 2 comments · May be fixed by #2096

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@ignapk
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ignapk commented Feb 7, 2022

When extracting password protected RAR archives with only data encrypted, the error message is:

Unsupported block header size (was 7, max is 2)

instead of the error that is given for RAR archives with both data and metadata encrypted:

RAR encryption support unavailable
@synodriver
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I've met the same problem when trying to wrap libarchive into a python library. It's seems there is no support for encrypted rar files at this moment.

@HeavenVolkoff HeavenVolkoff mentioned this issue Oct 26, 2023
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@dunhor
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dunhor commented Mar 30, 2024

My main intent wasn't to give a better message in this scenario, but my change #2096 will make this not only easier to identify encryption in RAR5 archives, but to also improve the error message. E.g. see the error message here: https://github.com/dunhor/libarchive/blob/968471dad85f23925a3e507db5b98be8c513c70f/libarchive/archive_read_support_format_rar5.c#L4105

@dunhor dunhor linked a pull request Apr 4, 2024 that will close this issue
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Update RAR5 code to report encryption dunhor/libarchive
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@dunhor @synodriver @ignapk