(SQL Server) FatturaPA XML Invoice Sign+Encrypt to P7M

Demonstrates how to create a CAdES BES signed + encrypted invoice.xml.p7m for the Italian FatturaPA exchange system.

Note: This example requires Chilkat v9.5.0.75 or greater.

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)
    -- Note: Requires Chilkat v9.5.0.75 or greater.

    -- This requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    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

    -- Use a digital certificate and private key from a PFX file (.pfx or .p12).
    DECLARE @pfxPath nvarchar(4000)
    SELECT @pfxPath = 'qa_data/pfx/cert_test123.pfx'
    DECLARE @pfxPassword nvarchar(4000)
    SELECT @pfxPassword = 'test123'

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

    DECLARE @success int
    EXEC sp_OAMethod @cert, 'LoadPfxFile', @success OUT, @pfxPath, @pfxPassword
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    -- Provide the signing cert (with associated private key).
    EXEC sp_OAMethod @crypt, 'SetSigningCert', @success OUT, @cert
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    -- Indicate that SHA-256 should be used.
    EXEC sp_OASetProperty @crypt, 'HashAlgorithm', 'sha256'

    -- Specify the signed attributes to be included.
    -- (This is what makes it CAdES-BES compliant.)
    DECLARE @jsonSignedAttrs int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonSignedAttrs OUT

    EXEC sp_OAMethod @jsonSignedAttrs, 'UpdateInt', @success OUT, 'contentType', 1
    EXEC sp_OAMethod @jsonSignedAttrs, 'UpdateInt', @success OUT, 'signingTime', 1
    EXEC sp_OAMethod @jsonSignedAttrs, 'UpdateInt', @success OUT, 'messageDigest', 1
    EXEC sp_OAMethod @jsonSignedAttrs, 'UpdateInt', @success OUT, 'signingCertificateV2', 1
    EXEC sp_OAMethod @jsonSignedAttrs, 'Emit', @sTmp0 OUT
    EXEC sp_OASetProperty @crypt, 'SigningAttributes', @sTmp0

    DECLARE @inFile nvarchar(4000)
    SELECT @inFile = 'qa_data/xml/IT01234567890_11002.xml'
    DECLARE @sigFile nvarchar(4000)
    SELECT @sigFile = 'qa_data/fatturapa/signed.p7m'

    -- Create the CAdES-BES signature, which contains the original data.
    EXEC sp_OAMethod @crypt, 'CreateP7M', @success OUT, @inFile, @sigFile
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @jsonSignedAttrs
        RETURN
      END

    -- Now we'll encrypt what was signed using FatturaPA's certificate (from a PEM file)
    DECLARE @encryptCert int
    -- Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @encryptCert OUT

    EXEC sp_OAMethod @encryptCert, 'LoadFromFile', @success OUT, 'qa_data/certs/fatturapa_cert.pem'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @encryptCert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @jsonSignedAttrs
        EXEC @hr = sp_OADestroy @encryptCert
        RETURN
      END

    EXEC sp_OASetProperty @crypt, 'CryptAlgorithm', 'pki'

    EXEC sp_OAMethod @crypt, 'SetEncryptCert', @success OUT, @encryptCert
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @jsonSignedAttrs
        EXEC @hr = sp_OADestroy @encryptCert
        RETURN
      END

    -- Indicate the underlying bulk encryption algorithm to be used:
    EXEC sp_OASetProperty @crypt, 'Pkcs7CryptAlg', 'aes'
    EXEC sp_OASetProperty @crypt, 'KeyLength', 128

    -- There's one last option that could be set.  If is the RSA encryption encryption/padding scheme. 
    -- By default, RSAES_PKCS1-V1_5 is used.  If desired, the OaepPadding property could be set to 1 to
    -- use RSAES_OAEP.  (We'll leave it set at the default value of 0)
    EXEC sp_OASetProperty @crypt, 'OaepPadding', 0

    -- Everything is specified.  Encrypt the .p7m to create a new .p7m (which adds a layer of encryption around the opaque signature).
    -- The output is PKCS7 in binary DER format.
    EXEC sp_OAMethod @crypt, 'CkEncryptFile', @success OUT, @sigFile, 'qa_output/signed_and_encrypted.p7m'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @jsonSignedAttrs
        EXEC @hr = sp_OADestroy @encryptCert
        RETURN
      END


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @crypt
    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @jsonSignedAttrs
    EXEC @hr = sp_OADestroy @encryptCert


END
GO