Create ZIP Archives and Add Files and Folders using C#

CreateEncryptedZIP_CSharp.md

Learn how to create a ZIP archive and add files and folders using C#: https://blog.conholdate.com/2021/09/18/create-encrypted-zip-files-using-csharp/

The following topics are covered here:

1. Create Encrypted ZIP Archives with AES Encryption
2. Create Password-Protected ZIP Archives
3. Encrypt Specific Files in ZIP Archives
4. Encrypt Folders in ZIP Archives
5. Create Encrypted ZIP Archives with Mixed Encryption

CreateEncryptedZIP_CSharp_AESEncryptedZIP.cs

// create an archive
Archive archive = new Archive(new ArchiveEntrySettings(null, new AesEcryptionSettings("p@s$", EncryptionMethod.AES128)));

// Add files to the archive
archive.CreateEntry("abc.txt", "C:\\Files\\sample1.txt");

// save the archive
archive.Save("C:\\Files\\aes.zip");

CreateEncryptedZIP_CSharp_EncryptSpecificFiles.cs

// create an archive
Archive archive = new Archive();

// Add files to the archive
archive.CreateEntry("sample1.txt", "C:\\Files\\sample1.txt");
archive.CreateEntry("sample2.txt", "C:\\Files\\sample2.txt", false, new ArchiveEntrySettings(encryptionSettings: new TraditionalEncryptionSettings("123@abc")));

// save the archive
archive.Save("C:\\Files\\password_protcted.zip");

CreateEncryptedZIP_CSharp_MixedEncryption.cs

// create an archive
Archive archive = new Archive();

// Add file with AES encryption to the archive
archive.CreateEntry("sample1.txt", "C:\\Files\\sample1.txt", false, new ArchiveEntrySettings(null, new AesEcryptionSettings("p@s$", EncryptionMethod.AES128)));

// Add file with traditional encryption to the archive
archive.CreateEntry("sample2.txt", "C:\\Files\\sample2.txt", false, new ArchiveEntrySettings(encryptionSettings: new TraditionalEncryptionSettings("321")));

// Add file without encryption to the archive
archive.CreateEntry("sample3.txt", "C:\\Files\\sample2.txt");

// Add folder without encryption to the archive
archive.CreateEntries("C:\\Files\\MyFolder");

// save the archive
archive.Save("C:\\Files\\Mixed.zip");

CreateEncryptedZIP_CSharp_PasswordProtectedFolders.cs

// create an archive
Archive archive = new Archive(new ArchiveEntrySettings(null, new TraditionalEncryptionSettings("123@45")));

// Add folder to the archive
archive.CreateEntries("C:\\Files\\MyFolder");

// save the archive
archive.Save("C:\\Files\\password_protcted_folder.zip");

CreateEncryptedZIP_CSharp_PasswordProtectedZIP.cs

// create an archive
Archive archive = new Archive(new ArchiveEntrySettings(encryptionSettings: new TraditionalEncryptionSettings("12345")));

// Add files to the archive
archive.CreateEntry("sample1.txt", "C:\\Files\\sample1.txt");
archive.CreateEntry("sample2.txt", "C:\\Files\\sample2.txt");

// save the archive
archive.Save("C:\\Files\\password_protcted.zip");