Visual FoxPro

Load Java KeyStore and Access Contents

See more Java KeyStore (JKS) Examples

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. Visual FoxPro

LOCAL lnSuccess
LOCAL loJks
LOCAL lnNumTrustedCerts
LOCAL lnNumPrivateKeys
LOCAL loCert
LOCAL lcAlias
LOCAL i
LOCAL loPrivKey
LOCAL loCertChain

lnSuccess = 0

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

loJks = CreateObject('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.
lnSuccess = loJks.LoadFile("jksFilePassword","/someDir/keyStore.jks")
IF (lnSuccess = 0) THEN
    ? loJks.LastErrorText
    RELEASE loJks
    CANCEL
ENDIF

* Find out how many of each type of entry:
lnNumTrustedCerts = loJks.NumTrustedCerts
lnNumPrivateKeys = loJks.NumPrivateKeys

loCert = CreateObject('Chilkat.Cert')

* For each trusted certificate, access it by getting
* it as a cert object.  Also get the alias associated with the certificate.
? "Trusted Certs:"
i = 0
DO WHILE i < lnNumTrustedCerts
    lnSuccess = loJks.TrustedCertAt(i,loCert)
    ? loJks.GetTrustedCertAlias(i) + ": " + loCert.SubjectDN
    i = i + 1
ENDDO

loPrivKey = CreateObject('Chilkat.PrivateKey')
loCertChain = CreateObject('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.
? "Private Keys:"
i = 0
DO WHILE i < lnNumPrivateKeys
    loJks.PrivateKeyAt("jksFilePassword",i,loPrivKey)
    ? loJks.GetPrivateKeyAlias(i)
    loJks.CertChainAt(i,loCertChain)

    * The 1st certificate in the chain is the one associated with the private key.
    loCertChain.CertAt(0,loCert)
    ? loCert.SubjectDN

    i = i + 1
ENDDO

RELEASE loJks
RELEASE loCert
RELEASE loPrivKey
RELEASE loCertChain