B4X

Create Egypt ITIDA CAdES-BES .p7s Signature (File to File)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements. B4X

Dim success As Boolean = False

'  This example assumes the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim crypt As ChilkatCrypt2
crypt.Initialize("crypt")

Dim cert As ChilkatCert
cert.Initialize("cert")

'  There are many ways to load the certificate.  
'  This example was created for a customer using an ePass2003 USB token.
'  Assuming the USB token is the only source of a hardware-based private key..
success = cert.LoadFromSmartcard("")
If success <> True Then
    Log(cert.LastErrorText)
    Return
End If


'  Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert)
If success <> True Then
    Log(crypt.LastErrorText)
    Return
End If


Dim cmsOptions As ChilkatJsonObject
cmsOptions.Initialize
cmsOptions.UpdateBool("DigestData", True)
cmsOptions.UpdateBool("OmitAlgorithmIdNull", True)
crypt.CmsOptions = cmsOptions.Emit

'  The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
'  To create a CAdES-BES signature, set this property equal to true. 
crypt.CadesEnabled = True

crypt.HashAlgorithm = "sha256"

Dim jsonSigningAttrs As ChilkatJsonObject
jsonSigningAttrs.Initialize
jsonSigningAttrs.UpdateInt("contentType", 1)
jsonSigningAttrs.UpdateInt("signingTime", 1)
jsonSigningAttrs.UpdateInt("messageDigest", 1)
jsonSigningAttrs.UpdateInt("signingCertificateV2", 1)
crypt.SigningAttributes = jsonSigningAttrs.Emit

'  By default, all the certs in the chain of authentication are included in the signature.
'  If desired, we can choose to only include the signing certificate:
crypt.IncludeCertChain = False

'  Make sure we sign the utf-8 byte representation of the JSON string
crypt.Charset = "utf-8"

'  Create the CAdES-BES signature, which does not contain the data being signed.
Dim pathOfFileToSign As String = "someDir/someFile"
Dim outputPath As String = "outDir/someFile.p7s"
success = crypt.CreateP7S(pathOfFileToSign, outputPath)
If success <> True Then
    Log(crypt.LastErrorText)
    Return
End If


Log("Success!")