(Objective-C) Convert PEM to JKS (Java KeyStore)

Converts a PEM containing private key(s) and certificates into a JKS (Java KeyStore) formatted file.

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#import <CkoPem.h>
#import <NSString.h>
#import <CkoJavaKeyStore.h>

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

// The Chilkat PEM class was introduced in v9.5.0.49.  
// It requires the bundle to be unlocked, as shown above.
CkoPem *pem = [[CkoPem alloc] init];

// Load the PEM from a file.
// If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
NSString *password = @"myPassword";
BOOL success = [pem LoadPemFile: @"../myPemFiles/myPem.pem" password: password];
if (success != YES) {
    NSLog(@"%@",pem.LastErrorText);
    return;
}

// Note: If the app already has the PEM pre-loaded in a string variable, then load it 
// by calling LoadPem instead.  
NSString *pemContent = @"... the PEM contents ...";
success = [pem LoadPem: pemContent password: password];
// Check for success as before..

// Convert to a JavaKeyStore object.
// The alias, if a non-empty string, will be applied to the 1st private key or 
// certificate.  All other keys and/or certificates will be assigned an auto-generated
// alias.
NSString *alias = @"anything_I_want_here";

// This is the passord that will be required to access the created JKS.
NSString *jksPassword = @"myJksSecret";
CkoJavaKeyStore *jks = [pem ToJks: alias password: jksPassword];
if (pem.LastMethodSuccess == NO) {
    NSLog(@"%@",pem.LastErrorText);
    return;
}

// Save the JKS to a file.  The password passed here is used for the keyed hash of the
// entire JKS file.  This may be different (if desired) than the password for individual private keys
// contained within the JKS.  
success = [jks ToFile: jksPassword path: @"../myJksFiles/myJks.jks"];
if (success != YES) {
    NSLog(@"%@",jks.LastErrorText);
    return;
}