Inconsistent behavior for encrypted rar/zip/7z

[ganego]

With a zip file you can only encrypt the entries' data - so you can still see all file names.
With rar and 7z (and maybe others) you can encrypt the data and - optionally - the file name.

Behavior when getting blocks for an entry via entry.get_blocks():

• Encrypted zip:

  • ERROR: Passphrase required for this entry (errno=-1, retcode=-25, archive_p=1880656)

• Encrypted rar / file names not encrypted:

  • NO ERROR. Returned encrypted bytes (I presume it's the encrypted data at least, did not verify)

• Encrypted 7z / file names not encrypted:

  • ERROR: The file content is encrypted, but currently not supported (errno=-1, retcode=-30, archive_p=6593280)

• Encrypted rar / file names encrypted:

  • ERROR. Fails when opening the archive with Encryption is not supported (errno=42, retcode=-30, archive_p=4559952)

• Encrypted 7z / file names encrypted:

  • ERROR. Fails when opening the archive but with different error than for rar: The archive header is encrypted, but currently not supported (errno=-1, retcode=-30, archive_p=5805136)

EDIT: It's probably some libarchive issue, yes?

[Changaco]

Yes, this is a libarchive issue, so it should be reported upstream: https://github.com/libarchive/libarchive/issues/new.

(Sorry I completely forgot to respond to this issue when it was opened.)