(C# UWP/WinRT) Add Private Key to Java Keystore

Adds a private key to an existing Java keystore.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Chilkat.JavaKeyStore jks = new Chilkat.JavaKeyStore();

string jksPassword = "myJksPassword";
string jksPath = "/someDir/keyStore.jks";

// Load the Java keystore from a file.
bool success = jks.LoadFile(jksPassword,jksPath);
if (success != true) {
    Debug.WriteLine(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:
Chilkat.Cert cert = new Chilkat.Cert();

// Chilkat will automatically determine the format of the cert file and load it correctly.
success = cert.LoadFromFile("/mycerts/alice.crt");
if (success != true) {
    Debug.WriteLine(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.
Chilkat.XmlCertVault certVault = new Chilkat.XmlCertVault();
success = certVault.AddCertFile("/mycerts/ca.crt");
if (success != true) {
    Debug.WriteLine(certVault.LastErrorText);
    return;
}

success = cert.UseCertVault(certVault);
if (success != true) {
    Debug.WriteLine(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).
Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();
success = privKey.LoadPemFile("/mycerts/alice.key");
if (success != true) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

// Provide the certificate object with the private key:
success = cert.SetPrivateKey(privKey);
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// Our certificate object now contains all that we need to add it as a private key entry
// to the Java keystore:
string alias = "alice";
success = jks.AddPrivateKey(cert,alias,jksPassword);
if (success != true) {
    Debug.WriteLine(jks.LastErrorText);
    return;
}

// Write the updated JKS, which contains the new private key entry w/ certificate chain.
success = jks.ToFile(jksPassword,jksPath);
if (success != true) {
    Debug.WriteLine(jks.LastErrorText);
    return;
}

Debug.WriteLine("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.
Chilkat.Pfx pfx = new Chilkat.Pfx();

success = pfx.LoadPfxFile("/myPfxFiles/my.pfx","pfxPassword");
if (success != true) {
    Debug.WriteLine(pfx.LastErrorText);
    return;
}

// This is easy -- simply add the PFX to the JKS
alias = "bob";
success = jks.AddPfx(pfx,alias,jksPassword);
if (success != true) {
    Debug.WriteLine(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,jksPath);
if (success != true) {
    Debug.WriteLine(jks.LastErrorText);
    return;
}

Debug.WriteLine("Added new private key entry (from PFX) to the JKS!");