(SQL Server) Example: Crypt2.EncryptSb method

Demonstrates how to call the EncryptSb method.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @crypt int
    -- Use "Chilkat_9_5_0.Crypt2" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Crypt2', @crypt OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    DECLARE @bdEncrypted int
    -- Use "Chilkat_9_5_0.BinData" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bdEncrypted OUT

    DECLARE @sbPlainText int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbPlainText OUT

    EXEC sp_OAMethod @sbPlainText, 'Append', @success OUT, 'Text to be encrypted'

    -- ...
    -- Set the secret key ...
    -- Set properties such as CryptAlgorithm, CipherMode, PaddingScheme, KeyLength
    -- Set the IV if needed ...
    -- ...

    EXEC sp_OASetProperty @crypt, 'Charset', 'utf-8'

    EXEC sp_OAMethod @crypt, 'EncryptSb', @success OUT, @sbPlainText, @bdEncrypted
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @bdEncrypted
        EXEC @hr = sp_OADestroy @sbPlainText
        RETURN
      END

    EXEC @hr = sp_OADestroy @crypt
    EXEC @hr = sp_OADestroy @bdEncrypted
    EXEC @hr = sp_OADestroy @sbPlainText


END
GO