(VB.NET) 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.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim crypt As New Chilkat.Crypt2

Dim cert As New Chilkat.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..
Dim success As Boolean = cert.LoadFromSmartcard("")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


Dim cmsOptions As New Chilkat.JsonObject
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 New Chilkat.JsonObject
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
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Success!")