Verify a Zip's Password

Demonstrates how to verify the password for an encrypted or password-protected zip archive.

Download Chilkat 32-bit Zip ActiveX (.msi) (includes objects for .zip, .gz, .bz2, and .Z)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @zip int
    EXEC @hr = sp_OACreate 'Chilkat.Zip2', @zip OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    --  Any string unlocks the component for the 1st 30-days.
    EXEC sp_OAMethod @zip, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  To verify a password for a Zip, the Zip must be opened:
    EXEC sp_OAMethod @zip, 'OpenZip', @success OUT, 'myProtected.zip'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Set the password to be verified:
    EXEC sp_OASetProperty @zip, 'DecryptPassword', 'secret'

    DECLARE @passwordOk int

    EXEC sp_OAMethod @zip, 'VerifyPassword', @passwordOk OUT
    IF @passwordOk = 1
      BEGIN
        PRINT 'Password is correct.'
      END
    ELSE
      BEGIN
        PRINT 'Password is incorrect.'
      END

    EXEC sp_OAMethod @zip, 'CloseZip', NULL

END
GO