7z documentation: https://documentation.help/7-Zip/method.htm
seems the default is ZipCrypto unar works if the file is compressed with: $ 7z a -mem=ZipCrypto -tzip -p1234 foo.zip bar baz $ 7z a -tzip -p1234 foo.zip bar baz and unar fails if the file is compressed with: $ 7z a -mem=AES128 -tzip -p1234 foo.zip bar baz $ 7z a -mem=AES192 -tzip -p1234 foo.zip bar baz $ 7z a -mem=AES256 -tzip -p1234 foo.zip bar baz
