Xojo Plugin

Set the Decryption Certificate for an Email

See more Email Object Examples

Demonstrates the Chilkat Email.SetDecryptCert method, which explicitly provides a certificate (with access to its private key) for decrypting a received encrypted email. Set the certificate before loading the encrypted message so Chilkat can decrypt it automatically. This example loads the certificate from a PFX, sets it, and then loads an encrypted email.

Background: Decrypting S/MIME email requires the recipient's private key. On Windows and macOS, Chilkat can find an installed certificate automatically, but when the key lives in a standalone PFX file you provide it explicitly with SetDecryptCert. A PFX (PKCS#12) bundles the certificate and its private key in one password-protected file. If the certificate and key are in separate files, use SetDecryptCert2 instead.

Chilkat Xojo Plugin Downloads

Download Chilkat for Xojo Plugin

Xojo Plugin

Dim success As Boolean
success = False

//  Demonstrates the SetDecryptCert method, which explicitly provides a certificate (with
//  access to its private key) for decrypting a received encrypted email.  Set the cert
//  before loading the encrypted email so it can be decrypted automatically.

Dim email As New Chilkat.Email

//  Load a certificate together with its private key from a PFX file.
Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("qa_data/certs/decryption.pfx","pfx_password")
If (success = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

//  Provide the certificate to use for decryption.
success = email.SetDecryptCert(cert)
If (success = False) Then
    System.DebugLog(email.LastErrorText)
    Return
End If

//  Load the encrypted email; Chilkat decrypts it using the certificate.
success = email.LoadEml("qa_data/eml/encrypted.eml")
If (success = False) Then
    System.DebugLog(email.LastErrorText)
    Return
End If

System.DebugLog("ReceivedEncrypted = " + Str(email.ReceivedEncrypted))
System.DebugLog("Decrypted = " + Str(email.Decrypted))

//  Note: Paths such as "qa_data/..." are relative local filesystem paths,
//  relative to the current working directory of the running application.