Xojo Plugin Requires Chilkat v11.0.0+

Convert Java KeyStore to PEM

See more Java KeyStore (JKS) Examples

Loads a Java keystore file and saves the trusted certificate entries to a PEM file. Xojo Plugin

Dim success As Boolean
success = False

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

Dim jks As New Chilkat.JavaKeyStore

Dim jksPassword As String
jksPassword = "myJksPassword"

//  Load the Java keystore from a file.  The JKS file password is used
//  to verify the keyed digest that is found at the very end of the keystore.
//  It verifies that the keystore has not been modified.
success = jks.LoadFile(jksPassword,"/someDir/keyStore.jks")
If (success = False) Then
    System.DebugLog(jks.LastErrorText)
    Return
End If

//  Open/create the output PEM file. 
//  This example uses Chilkat's file access class for writing the output file.
//  You may replace the file I/O lines of code with whatever is most convenient for you.
Dim fac As New Chilkat.FileAccess
success = fac.OpenForWrite("/pemFiles/caCerts.pem")
If (success = False) Then
    System.DebugLog(fac.LastErrorText)
    Return
End If

Dim numCerts As Int32
numCerts = jks.NumTrustedCerts

Dim cert As New Chilkat.Cert
Dim pem As String

//  Iterate over the trusted certs, get the PEM for each,
//  and append it to the output file.
Dim i As Int32
i = 0
While i < numCerts
    success = jks.TrustedCertAt(i,cert)

    //  Get the certificate in PEM format.  
    pem = cert.ExportCertPem()

    //  Append the PEM string to the open file.
    success = fac.AppendText(pem,"utf-8")
    If (success <> True) Then
        System.DebugLog(fac.LastErrorText)
        Return
    End If

    i = i + 1
Wend

//  Close the output file.
fac.FileClose 

System.DebugLog("Trusted certificates saved to PEM.")