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Removing an entry from zip archive damages the rest of the files in the archive #206
test.zip
When removing an AES encrypted file from a zip archive the other files in the archive get corrupted. Testing the file with 7zip reports a CRC error. The original zip file was created using the exceed .net zip library, extracting files from that original file is no problem. After removing 1 file from the original the characteristics of the other entries are changed from "0x554E NTFS up WzAES : Encrypt" to "WzAES NTFS : Encrypt".
Find an example zip file, build with xceed zip library in the attachment of this issue. The zip file contains 2 files test1.txt en test2.txt. When removing 1 of the files with this code the other file cannot extracted anymore. Password for the files in the zip is test.
using (var f = Ionic.Zip.ZipFile.Read("test.zip")) { f.RemoveEntry("test1.txt"); f.Save(); }
test.zip When removing an AES encrypted file from a zip archive the other files in the archive get corrupted. Testing the file with 7zip reports a CRC error. The original zip file was created using the exceed .net zip library, extracting files from that original file is no problem. After removing 1 file from the original the characteristics of the other entries are changed from "0x554E NTFS up WzAES : Encrypt" to "WzAES NTFS : Encrypt".
Find an example zip file, build with xceed zip library in the attachment of this issue. The zip file contains 2 files test1.txt en test2.txt. When removing 1 of the files with this code the other file cannot extracted anymore. Password for the files in the zip is test.
using (var f = Ionic.Zip.ZipFile.Read("test.zip")) { f.RemoveEntry("test1.txt"); f.Save(); }