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Visual FoxPro Examples

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(Visual FoxPro) 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 ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

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

loJks = CreateObject('Chilkat_9_5_0.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 <> 1) THEN
    ? loJks.LastErrorText
    RELEASE loJks
    CANCEL
ENDIF

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

*  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
    loCert = loJks.GetTrustedCert(i)
    ? loJks.GetTrustedCertAlias(i) + ": " + loCert.SubjectDN
    RELEASE loCert
    i = i + 1
ENDDO

*  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
    loPrivKey = loJks.GetPrivateKey("jksFilePassword",i)
    ? loJks.GetPrivateKeyAlias(i)
    loCertChain = loJks.GetCertChain(i)

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

    RELEASE loCert
    RELEASE loCertChain
    RELEASE loPrivKey
    i = i + 1
ENDDO

RELEASE loJks


 

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