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(PowerBuilder) Open a Zip ArchiveSee more Zip ExamplesDemonstrates how to open a zip, or an encrypted .zip, or a legacy password-protected .zip.
integer li_rc oleobject loo_Zip integer li_Success loo_Zip = create oleobject li_rc = loo_Zip.ConnectToNewObject("Chilkat_9_5_0.Zip") if li_rc < 0 then destroy loo_Zip MessageBox("Error","Connecting to COM object failed") return end if // Open a non-encrypted .zip li_Success = loo_Zip.OpenZip("qa_data/zips/sample.zip") if li_Success <> 1 then Write-Debug loo_Zip.LastErrorText destroy loo_Zip return end if Write-Debug "Num entries = " + string(loo_Zip.NumEntries) // ... // ... loo_Zip.CloseZip() // ---------------------------------------------------------------------------- // Open an encrypted zip... // The two main types of encryption used in ZIP archives are Password-Protected and AES. // // --------------------------------------- // 1. Legacy Password-Protected Zip // // This is the older and less secure method of encrypting ZIP archives. // It provides a basic level of security, but is considered weak by modern standards. // It is vulnerable to various attacks, including known-plaintext attacks and brute force attacks. // Although Chilkat allows it, you shouldn't create new zip archives using legacy password-protection. // --------------------------------------- // 2. AES Encrypted Zip // // AES encryption is a more modern and secure method for encrypting ZIP archives. // It provides strong encryption based on the AES algorithm, which is widely regarded as secure. // AES supports different key lengths, typically 128-bit, 192-bit, and 256-bit. // When opening an encrypted zip, your application only needs to provide the correct password. // The information about the type of encryption and the key length (if AES) is already embedded within the encrypted .zip. // Provide the decrypt password because we are opening an existing .zip (decrypting) loo_Zip.DecryptPassword = "thePassword" li_Success = loo_Zip.OpenZip("qa_data/zips/encryptedSamples/ziptest_256.zip") if li_Success <> 1 then Write-Debug loo_Zip.LastErrorText destroy loo_Zip return end if Write-Debug "Num entries = " + string(loo_Zip.NumEntries) // ... // ... loo_Zip.CloseZip() destroy loo_Zip |
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