B4X

Create CAdES-T Signature using Aruba TSA Server (servizi.arubapec.it)

See more CAdES Examples

Demonstrates how to create a signature with an external timestamp (using the Aruba TSA Server) that certifies the time of signing.

Note: This example requires Chilkat v9.5.0.79 or greater.

B4X

Dim success As Boolean = False

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

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

'  This example will use a certificate + private key from a .pfx/.p12 file.
'  On Windows systems, it is also possible to use certs on smartcards/usb tokens or certs pre-installed in the Windows registry.
Dim cert As ChilkatCert
cert.Initialize("cert")

Dim pfxPath As String = "qa_data/pfx/myCertAndKey.p12"
Dim pfxPassword As String = "test123"

success = cert.LoadPfxFile(pfxPath, pfxPassword)
If success <> True Then
    Log(cert.LastErrorText)
    Return
End If


success = crypt.SetSigningCert(cert)

'  Use SHA-256 rather than the default of SHA-1
crypt.HashAlgorithm = "sha256"

'  Create JSON that tells Chilkat what signing attributes to include:
Dim attrs As ChilkatJsonObject
attrs.Initialize
attrs.UpdateBool("contentType", True)
attrs.UpdateBool("signingTime", True)
attrs.UpdateBool("messageDigest", True)
attrs.UpdateBool("signingCertificateV2", True)

'  A CAdES-T signature is one that includes a timestampToken created by an online TSA (time stamping authority).
'  We must include the TSA's URL, as well as a few options to indicate what is desired.
'  This example uses the Aruba TSA server, which requires a login/password for the HTTPS request.
attrs.UpdateBool("timestampToken.enabled", True)
attrs.UpdateString("timestampToken.tsaUrl", "https://servizi.arubapec.it/tsa/ngrequest.php")

'  The tsaUsername/tsaPassword feature was added in Chilkat v9.5.0.79.
'  Make sure you are using a version of Chilkat that is no older than v9.5.0.79
attrs.UpdateString("timestampToken.tsaUsername", "arubaTsaUsername")
attrs.UpdateString("timestampToken.tsaPassword", "arubaTsaPassword")

attrs.UpdateBool("timestampToken.addNonce", False)
attrs.UpdateBool("timestampToken.requestTsaCert", True)
attrs.UpdateString("timestampToken.hashAlg", "sha256")

crypt.SigningAttributes = attrs.Emit

Dim inFile As String = "qa_data/json/sample.json"
Dim outFile As String = "qa_output/sample_cades_t.p7m"

'  This creates the CAdES-T signature.  During the signature creation, it
'  communicates with the TSA to get a timestampToken.
success = crypt.CreateP7M(inFile, outFile)
If success <> True Then
    Log(crypt.LastErrorText)
    Return
End If


Log("Success.")