(Swift 3,4,5...) Add Private Key to Java Keystore

Adds a private key to an existing Java keystore.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let jks = CkoJavaKeyStore()!

    var jksPassword: String? = "myJksPassword"
    var jksPath: String? = "/someDir/keyStore.jks"

    // Load the Java keystore from a file.
    var success: Bool = jks.loadFile(jksPassword, path: jksPath)
    if success != true {
        print("\(jks.lastErrorText!)")
        return
    }

    // A JKS private key entry consists of both the private key,
    // it's associated certificate (which contains the matching public key
    // within the X.509 of the certificate), and the certificates in the
    // chain of authentication to the root.
    // 
    // Therefore, to add a private key entry to a JKS requires
    // a Chilkat certificate object that has a private key and which also
    // has the certificate chain (up to the root) available.

    // There are many ways to get a Chilkat certificate object
    // that contains (within it) the private key and the certificate chain
    // This example will show two possibilities:
    // (1) Where the cert and issuing root are provided in PEM format in .crt files,
    // and the private key is also provided in unencrypted PEM format (.key file).
    // (2) Where the cert, private key, and issuing root are provided in a single PFX.

    // First for the .crt / .key files:
    let cert = CkoCert()!

    // Chilkat will automatically determine the format of the cert file and load it correctly.
    success = cert.load(fromFile: "/mycerts/alice.crt")
    if success != true {
        print("\(cert.lastErrorText!)")
        return
    }

    // Certificates required for building the chain of authentication can be
    // added to an XML certificate vault object, and then provided as
    // a source for obtaining certs when building the chain.
    let certVault = CkoXmlCertVault()!
    success = certVault.addCertFile("/mycerts/ca.crt")
    if success != true {
        print("\(certVault.lastErrorText!)")
        return
    }

    success = cert.use(certVault)
    if success != true {
        print("\(cert.lastErrorText!)")
        return
    }

    // Now provide the associated private key to the certificate object.
    // The Chilkat private key class provides methods for loading from many formats (both
    // encrypted and unencrypted).
    let privKey = CkoPrivateKey()!
    success = privKey.loadPemFile("/mycerts/alice.key")
    if success != true {
        print("\(privKey.lastErrorText!)")
        return
    }

    // Provide the certificate object with the private key:
    success = cert.setPrivateKey(privKey)
    if success != true {
        print("\(cert.lastErrorText!)")
        return
    }

    // Our certificate object now contains all that we need to add it as a private key entry
    // to the Java keystore:
    var alias: String? = "alice"
    success = jks.addPrivateKey(cert, alias: alias, password: jksPassword)
    if success != true {
        print("\(jks.lastErrorText!)")
        return
    }

    // Write the updated JKS, which contains the new private key entry w/ certificate chain.
    success = jks.toFile(jksPassword, path: jksPath)
    if success != true {
        print("\(jks.lastErrorText!)")
        return
    }

    print("Added new private key entry (from .crt and .key files) to the JKS!")

    // Now let's add a new private key entry from a PFX that contains a single
    // private key with associated cert and cert chain.
    let pfx = CkoPfx()!

    success = pfx.loadFile("/myPfxFiles/my.pfx", password: "pfxPassword")
    if success != true {
        print("\(pfx.lastErrorText!)")
        return
    }

    // This is easy -- simply add the PFX to the JKS
    alias = "bob"
    success = jks.add(pfx, alias: alias, password: jksPassword)
    if success != true {
        print("\(jks.lastErrorText!)")
        return
    }

    // Write the updated JKS, which contains the new private key entry w/ certificate chain
    // that came from the PFX.
    success = jks.toFile(jksPassword, path: jksPath)
    if success != true {
        print("\(jks.lastErrorText!)")
        return
    }

    print("Added new private key entry (from PFX) to the JKS!")

}