(Lianja) Change Password for Java KeyStore File

Demonstrates how to load a Java keystore, change the password, and save using the new password. If the Java keystore contains only trusted root certificates, then it's simply a matter of loading the JKS with the existing password, and then saving with a new password. If the JKS contains private key entries, then each private key entry must be re-keyed using the new password by calling the ChangePassword method.

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

loJks = createobject("CkJavaKeyStore")

lcOldJksPassword = "existingPassword"
lcNewJksPassword = "newPassword"
lcJksPath = "/someDir/keyStore.jks"

// Load the Java keystore from a file.
llSuccess = loJks.LoadFile(lcOldJksPassword,lcJksPath)
if (llSuccess <> .T.) then
    ? loJks.LastErrorText
    release loJks
    return
endif

// If the JKS contains private key entries, then each
// must be re-keyed with the new password by calling ChangePassword.
lnNumPrivateKeys = loJks.NumPrivateKeys

i = 0
do while i < lnNumPrivateKeys

    llSuccess = loJks.ChangePassword(i,lcOldJksPassword,lcNewJksPassword)
    if (llSuccess <> .T.) then
        ? loJks.LastErrorText
        release loJks
        return
    endif

    i = i + 1
enddo

// Write the JKS using the new password for the JKS file's keyed digest.
llSuccess = loJks.ToFile(lcNewJksPassword,lcJksPath)
if (llSuccess <> .T.) then
    ? loJks.LastErrorText
    release loJks
    return
endif

? "Updated the password for the Java keystore file."


release loJks