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(VB.NET UWP/WinRT) Load Java KeyStore and Access Contents

Loads a Java keystore file and iterates over the contents. A Java keystore (.jks) file can contain one or more trusted root certificate entries and/or one or more private key entries. Each private key entry includes an associated certificate chain.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

Dim jks As New Chilkat.JavaKeyStore

' 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 there has been no tampering with the file.
Dim success As Boolean = jks.LoadFile("jksFilePassword","/someDir/keyStore.jks")
If (success <> True) Then
    Debug.WriteLine(jks.LastErrorText)
    Exit Sub
End If


' Find out how many of each type of entry:
Dim numTrustedCerts As Integer = jks.NumTrustedCerts
Dim numPrivateKeys As Integer = jks.NumPrivateKeys

Dim cert As Chilkat.Cert
Dim alias As String

Dim i As Integer

' For each trusted certificate, access it by getting
' it as a cert object.  Also get the alias associated with the certificate.
Debug.WriteLine("Trusted Certs:")
i = 0
While i < numTrustedCerts
    cert = jks.GetTrustedCert(i)
    Debug.WriteLine(jks.GetTrustedCertAlias(i) & ": " & cert.SubjectDN)

    i = i + 1
End While

Dim privKey As Chilkat.PrivateKey
Dim certChain As Chilkat.CertChain

' For each private key entry, get the private key and
' the associated certificate chain.
' Each private key is password protected.  Usually it is the same
' password as used for the keyed digest of the entire JKS.  
' However, this does not have to be.  The password is passed
' here to handle the possibility of each private key requiring
' a different password.
Debug.WriteLine("Private Keys:")
i = 0
While i < numPrivateKeys
    privKey = jks.GetPrivateKey("jksFilePassword",i)
    Debug.WriteLine(jks.GetPrivateKeyAlias(i))
    certChain = jks.GetCertChain(i)

    ' The 1st certificate in the chain is the one associated with the private key.
    cert = certChain.GetCert(0)
    Debug.WriteLine(cert.SubjectDN)




    i = i + 1
End While

 

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