Password mismatch wile unzipping

[sz-ashik440]

I have tried to make zip file with password protection. Zip creation succeeded but while unzipping the password is not matching anymore. I have tried to unzip with Finder on macOS Catlina(version 10.15.6) but still no luck.

let url = getDocumentsDirectory().appendingPathComponent("log.txt")
try fileBody.write(to: url, atomically: true, encoding: .utf8)
let zipURL = self.getDocumentsDirectory().appendingPathComponent("log.zip")
try Zip.zipFiles(paths: [url], zipFilePath: zipURL, password: "123", compression: .NoCompression) { (progress) in
print("zip progress: \(progress)")
}

Environment Informations:

Zip: 2.1.1
Swift version: 5.2
Xcode version: 12.2 (12B45b)
Tested On: iPhone X(iOS 14.0.1), iPhone 6s Plus(13.4.1)

[patrasupratim]

We are also facing the same issue. Environment details are same.

[HyunjoonKo]

same issue😓.

[patrasupratim]

I ended up rewriting the library using SSZipArchive..

[ajc-1924]

Hi Patrasupratim,
I had the same issue with Zip and I am trying to use SSZIpArchive and I haven't had any luck.
I am using swift 5.3 in Xcode 12.
Do you have a sample code using SSZipArchive for me to look at or the exact steps to follow to make it work.

Thanks,

Much appreciated

[sz-ashik440]

@ajc-1924 check this issue on SSZipArchive
ZipArchive/ZipArchive#601

[patrasupratim]

Hi @ajc-1924,

@sz-ashik440 pointed it right. It needs to disable the default AES encryption from other overloaded methods. Link is here -
https://github.com/ZipArchive/ZipArchive/issues/601#issuecomment-731170085.

[ajc-1924]

Thank you @patrasupratim and @sz-ashik440 for your replay. However, I still cannot unzip the file using SSZipArchive.
I am using swift 5.3, xocde 12. I am using the emulator. the file I am trying to unzip is password protected. this file gets unzipped properly in linux, windows as well as mac when I double click on the file it the default archive application tries to open ti. it prompts me for the password, I enter it and it gets successfully unzipped.
the file was zipped using AES encryption.

this is the call to the unzip method:

let success: Bool = SSZipArchive.unzipFile(atPath: srcURL.path,
toDestination: destURL.path,
preserveAttributes: true,
overwrite: true,
nestedZipLevel: 1,
password: !password.isEmpty ? password : nil,
error: nil,
delegate: nil,
progressHandler: nil,
completionHandler: nil)

and it fails here:

switch (zip->file_info.compression_method)
{
case MZ_COMPRESS_METHOD_STORE:
case MZ_COMPRESS_METHOD_DEFLATE:
#ifdef HAVE_BZIP2
case MZ_COMPRESS_METHOD_BZIP2:
#endif
#ifdef HAVE_LZMA
case MZ_COMPRESS_METHOD_LZMA:
#endif
err = MZ_OK;
break;
default:
return MZ_SUPPORT_ERROR;
}

I returns MZ_SUPPORT_ERROR

I Have been trying to make this work for days now with no luck.

I appreciate any help anyone can give me. I am trying to learn Swift.

[patrasupratim]

Hi @ajc-1924,

I used following code for zipping the file -
let success = SSZipArchive.createZipFile(atPath: zipUrl.path, withContentsOfDirectory: stagingDirUrl.path, keepParentDirectory: false, compressionLevel: zlib.Z_BEST_COMPRESSION, password: password, aes: false, progressHandler: nil)
This way I can unzip the compressed file in mac and windows as well. The thing is if the file is protected using AES, then there is need an unzip application written using the same library. Can you please try using aes: false.

[ajc-1924]

Thank you again @patrasupratim and @sz-ashik440, the things is I do not have controlled over the zipped file. I just need to unzip it. I know the zipped file is password is password protected and it was protected using the AES method. It can be unzipped on linux and windows using java libraries as well as 7zip and on mac it can be unzipped using the default unzip application. I need to unzip it using swift 5.3 using xcode 12 on ios.
regards,
I appreciate your input.

[klauslanza]

Any news on this issue...
I don't know if disabling AES when zipping using this library could help...
Thanks in advance.

[Marcello168]

same issue😓.