Lua

Change Password for Java KeyStore File

See more Java KeyStore (JKS) Examples

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. Lua

local chilkat = require("chilkat")

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

local jks = chilkat.JavaKeyStore.new()

local oldJksPassword = "existingPassword"
local newJksPassword = "newPassword"
local jksPath = "/someDir/keyStore.jks"

-- Load the Java keystore from a file.
local success = jks:load_file(oldJksPassword, jksPath)
if not success then
    print(jks.last_error_text)
    return
end

-- If the JKS contains private key entries, then each
-- must be re-keyed with the new password by calling ChangePassword.
local numPrivateKeys = jks.num_private_keys

local i = 0
while i < numPrivateKeys do
    success = jks:change_password(i, oldJksPassword, newJksPassword)
    if not success then
        print(jks.last_error_text)
        return
    end

    i = i + 1
end

-- Write the JKS using the new password for the JKS file's keyed digest.
success = jks:to_file(newJksPassword, jksPath)
if not success then
    print(jks.last_error_text)
    return
end

print("Updated the password for the Java keystore file.")