(Objective-C) Export Private Keys from Java KeyStore to JWK Set

Demonstrates how to export the private keys from a Java KeyStore to a JWK Set. Each private key alias is exported to the "kid" parameter.

Note: This example requires Chilkat v9.5.0.66 or greater.

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#import <CkoJavaKeyStore.h>
#import <NSString.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>

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

// Note: This example requires Chilkat v9.5.0.66 or greater.

CkoJavaKeyStore *jks = [[CkoJavaKeyStore alloc] init];

NSString *jksPassword = @"secret";

// Load the Java keystore from a file.  The JKS file password is used
// to verify the keyed digest that is found at the very end of the keystore.
// It verifies that the keystore has not been modified.
BOOL success = [jks LoadFile: jksPassword path: @"qa_data/jks/test_secret.jks"];
if (success != YES) {
    NSLog(@"%@",jks.LastErrorText);
    return;
}

// Export to JWK Set format.
// (Exports the compact 1-line JSON string to a StringBuilder..)
CkoStringBuilder *sbJwkSet = [[CkoStringBuilder alloc] init];
success = [jks ToJwkSet: jksPassword sbJwkSet: sbJwkSet];
if (success != YES) {
    NSLog(@"%@",jks.LastErrorText);
    return;
}

// To get in human-readable format, load into a JSON object and emit non-compact.
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json LoadSb: sbJwkSet];
json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// Sample output:

// { 
//   "keys": [
//     { 
//       "kty": "RSA",
//       "n": "yADdNtY3GcgAfwUhvf-ETRbcLFUaecY7lR9UWvBPW6zbzgvUwJRIcxadWFmtFXGZKxLXjKUmNjH8bm9d-cv2l1am1_s-FJN05qxGGNYvQ8EE6BFIkbgREMtpJ9F_BRjuurcIiilYGZ7FxMZDWb5Y5PLmW3JWJzUcCBgchMThzn68m0YpJjxqiVO1LLA-zULccjYyYXpSo0VWNxxaedm7DkJujADJ0-fKtX82vtGKnj8-zvF72CZf_DMhIirIK4Ryzz23-LbNY0b0BS_IQxybZxWpiI8hptciUIaIBIszii-0q3VH5pw0qL8Ec4BiA9pDzThgad3LBdySA-RcPxym6Q",
//       "e": "AQAB",
//       "d": "U63o4DSoQSUo7_wZrgDmPcq-u92vghuqei3tgU7iJR0hqgfRL_Hajix8EKcUf9BToW30uWevoSUw1JPL4eOwfIlIrTz1MG6xjoGtol6az-JGR0JT9oPov_obOQmx91QDLiO-cu_xaGbBoB7Dtxyo3MG0F7ayzRyvacOMyxAE2fv24ypb2cYiVNKrsYIGm1QvXvsbkBHW9cCxTSRR3J-jKeYt6X2Lge08z6XpuT7i-a1F_fPKRPWzMwgW1AunHa5GZBAuFZt3_Nv5Gg1RcIOZbax4Xm_7plSFXs76byDFrDQbx9KthTLdGRblRlXMaWmtGBHAmPqcAP45zRCLEO53cQ",
//       "p": "8uWk3bslzAYbtpxbQumWqIIeMurtH5CEOQv1NzGYLb8q4JRp9mysG1gsJk9_D5-JyqYZd4jkCj9pHgrY5q4J9LmVtJMUsl7m7qp7zqgWK2Q1pOTFH7bwa7omGUqqmSYJdA6rWqq3hiOPOtu5uQgZA0zZCX6o8Y19E55jdI1qM2M",
//       "q": "0sreI4hZKsC3crSA026bfAWBsqbwBgBr06gOiWl6p4xTRV8dVUtKyMA51_CRSu06oQ4zP6TRGnbPq9CHJIMRN15hX7J5iLJA-ApjgFRItPAvUeEkxha9CfwtCMEqw0Zea1-FH-mLQZ9nJeXyoHnjBpmz_pKE-5HlbJbtKsCCPEM",
//       "dp": "I2UPZzg0Q8zIEQ4rxk5fo-KCIA1XzHe0rNNvQkG52UC4MM2vuzcOxVVN6a8_5rjqzVry7xZFlLC00qnl_Ydy7_RzOkMMiwmFQVYagHzB7kTGBGdJyltQIYKYtqrIvVRroDvbAHVMFQHthzgpkir56h8yqU2JtNlXVpqIB53r0d0",
//       "dq": "zGHXMSyrCEEDnjxWDKtaJs5QCyDB6Y_O_NIeBi43tuzgcIrgrirqv-tiKnYe6j9KcY6LMlJkTPyWL0lpP4W107G3SEqMfHYZeGbaQzt1o7qepw1d0pOJh3zzTWG-TMiWFBXxxhdz5pTgNmbW8bI85dFyLIt0VVgI01kjbChsHnE",
//       "qi": "52wp71nLXtQwu7bH-yYp8No4ru3Vbr6BjzzN7kXTwxLmalzQFRkDUcKzYuOpwgJwCj0REsAnIGXKT4p6PXouzxGFad7dFEINrt3ezXUkN0HVobu0GoOTjlQqJHrkDJM111UVrAgQlr7BVIsx_FbE9hbpGlkeTmim_FCBa12CJhY",
//       "kid": "test"
//     },
//     { 
//       "kty": "EC",
//       "crv": "P-256",
//       "x": "MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
//       "y": "4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
//       "d": "870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE",
//       "kid": "1"
//     }
//   ]
// }