(PowerShell) 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.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$jks = New-Object 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.
$success = $jks.LoadFile("jksFilePassword","/someDir/keyStore.jks")
if ($success -ne $true) {
    $($jks.LastErrorText)
    exit
}

# Find out how many of each type of entry:
$numTrustedCerts = $jks.NumTrustedCerts
$numPrivateKeys = $jks.NumPrivateKeys

# For each trusted certificate, access it by getting
# it as a cert object.  Also get the alias associated with the certificate.
$("Trusted Certs:")
$i = 0
while ($i -lt $numTrustedCerts) {
    $cert = $jks.GetTrustedCert($i)
    $($jks.GetTrustedCertAlias($i) + ": " + $cert.SubjectDN)

    $i = $i + 1
}

# 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:")
$i = 0
while ($i -lt $numPrivateKeys) {
    $privKey = $jks.GetPrivateKey("jksFilePassword",$i)
    $($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)
    $($cert.SubjectDN)

    $i = $i + 1
}