(Xojo Plugin) Export Digital Certificate's Public Key

The ExportPublicKey method can be called to get a certificate's public key. It can then be saved to any of a number of formats: (1) OpenSSL DER, (2) OpenSSL PEM, (3) RSA DER, (4) XML.

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Dim cert As New Chilkat.Cert

// LoadFromFile will load virtually any certificate format file.
// It will auto-recognize the format and load appropiately.
Dim success As Boolean
success = cert.LoadFromFile("/Users/chilkat/testData/cer/chilkat.cer")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Get the public key:
Dim pubkey As Chilkat.PublicKey

pubkey = cert.ExportPublicKey()
If (cert.LastMethodSuccess = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Save to various formats:
success = pubkey.SaveDerFile(False,"/Users/chilkat/testData/pubkeys/chilkat_pkcs8.der")
If (success <> True) Then
    System.DebugLog(pubkey.LastErrorText)

    Return
End If

success = pubkey.SavePemFile(False,"/Users/chilkat/testData/pubkeys/chilkat.pem")
If (success <> True) Then
    System.DebugLog(pubkey.LastErrorText)

    Return
End If

success = pubkey.SaveDerFile(True,"/Users/chilkat/testData/pubkeys/chilkat_pkcs1.der")
If (success <> True) Then
    System.DebugLog(pubkey.LastErrorText)

    Return
End If

success = pubkey.SaveXmlFile("/Users/chilkat/testData/pubkeys/chilkat.xml")
If (success <> True) Then
    System.DebugLog(pubkey.LastErrorText)

    Return
End If

System.DebugLog("Public key exported to all file formats.")