Create a WinZip compatible AES Encrypted Zip

Creates a WinZip compatible 128-bit AES-encrypted .zip archive

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Chilkat.Zip zip = new Chilkat.Zip();

bool success;

//  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(zip.LastErrorText);
    return;
}

success = zip.NewZip("aes.zip");
if (success != true) {
    MessageBox.Show(zip.LastErrorText);
    return;
}

//  Set properties to indicate that the Zip should be
//  AES encrypted.

//  A value of 4 indicates WinZip compatible AES encryption.
zip.Encryption = 4;

//  Key length can be 128, 192, or 256 bits.
zip.EncryptKeyLength = 128;

//  Set the password needed to unzip.
zip.SetPassword("myPassword");

//  Append a directory tree.  The AppendFiles does
//  not read the file contents or append them to the zip
//  object in memory.  It simply appends references
//  to the files so that when WriteZip (or WriteZipAndClose,
//  or WriteExe, etc.) is called, the files are compressed
//  and encrypted.
bool recurse;
recurse = true;
zip.AppendFiles("c:/temp/a/*",recurse);

//  Write "AesEncrypted.zip"

success = zip.WriteZipAndClose();
if (success != true) {
    MessageBox.Show(zip.LastErrorText);
    return;
}

MessageBox.Show("Zip Created!");