(Objective-C) PKCS11 Find all Public Keys

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Demonstrates how to list all public keys on an HSM.

Note: This example requires Chilkat v9.5.0.96 or later.

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#import <CkoPkcs11.h>
#import <NSString.h>
#import <CkoJsonObject.h>

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

// Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

CkoPkcs11 *pkcs11 = [[CkoPkcs11 alloc] init];

// Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
// (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
pkcs11.SharedLibPath = @"C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll";

// Establish a logged-on session. (We can typically skip the login by passing an empty PIN if only needing to list public keys)
// Use your actual PIN here, or an empty string to skip login.
NSString *pin = @"0000";
int userType = 1;
BOOL success = [pkcs11 QuickSession: [NSNumber numberWithInt: userType] pin: pin];
if (success == NO) {
    NSLog(@"%@",pkcs11.LastErrorText);
    return;
}

// Note: To find public keys, we need a session, but it doesn't necessarily need to be logged-on.

CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;

success = [pkcs11 FindAllKeys: @"public" json: json];
if (success == NO) {
    NSLog(@"%@",pkcs11.LastErrorText);
    return;
}

NSLog(@"%@",[json Emit]);

// Sample output, with parsing code below..

// {
//   "keys": [
//     {
//       "handle": 74842125,
//       "id": "0001020304",
//       "key_type": "RSA",
//       "label": "Chilkat Software, Inc.",
//       "modulus": "twVRf6O ... Rwa1ebFY0=",
//       "exponent": "AAEAAQ=="
//     },
//     {
//       "handle": 18415630,
//       "id": "010203040A0B0C0D0E0F",
//       "key_type": "RSA",
//       "label": "ehealth private key",
//       "modulus": "qdKjhOwA1 ... A4MtX8BYgHmLw==",
//       "exponent": "AAEAAQ=="
//     },
//     {
//       "handle": 3735567,
//       "id": "D531B4B8F308489DA58350596178845973A4562E",
//       "key_type": "RSA",
//       "label": "d531b4b8-f308-489d-a583-505961788459",
//       "modulus": "r0MmXRKBP ... HAd1kUPsNyzcQ==",
//       "exponent": "AAEAAQ=="
//     },
//     {
//       "handle": 238092304,
//       "id": "0A0B0C0D01020304",
//       "key_type": "RSA",
//       "label": "MySshKey",
//       "modulus": "ykFHcfBFOq ... rfXBK/6g9t+S6UjJ1kUQ==",
//       "exponent": "AAEAAQ=="
//     },
//     {
//       "handle": 49348625,
//       "id": "48656C6C6F",
//       "key_type": "RSA",
//       "label": "2048-bit RSA key for testing",
//       "modulus": "vReVaJzXZYIOB ... kamD/8iNvhAKlKbQ==",
//       "exponent": "AAEAAQ=="
//     }
//   ]
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

int handle;
NSString *id = 0;
NSString *key_type = 0;
NSString *label = 0;
NSString *modulus = 0;
NSString *exponent = 0;

int i = 0;
int count_i = [[json SizeOfArray: @"keys"] intValue];
while (i < count_i) {
    json.I = [NSNumber numberWithInt: i];
    handle = [[json IntOf: @"keys[i].handle"] intValue];
    id = [json StringOf: @"keys[i].id"];
    key_type = [json StringOf: @"keys[i].key_type"];
    label = [json StringOf: @"keys[i].label"];
    modulus = [json StringOf: @"keys[i].modulus"];
    exponent = [json StringOf: @"keys[i].exponent"];
    i = i + 1;
}

[pkcs11 Logout];
[pkcs11 CloseSession];