Objective-C

Generate an Ed25519 Key Pair

See more Ed25519 Examples

Demonstrates how to generate a new Ed25519 public/private key pair.

Note: This example requires Chilkat v9.5.0.83 or greater.

Objective-C

#import <CkoEdDSA.h>
#import <CkoPrng.h>
#import <CkoPrivateKey.h>
#import <NSString.h>
#import <CkoJsonObject.h>

BOOL success = NO;

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

CkoEdDSA *eddsa = [[CkoEdDSA alloc] init];
CkoPrng *prng = [[CkoPrng alloc] init];
CkoPrivateKey *privKey = [[CkoPrivateKey alloc] init];

//  Generates a new eddsa key and stores it in privKey.
success = [eddsa GenEd25519Key: prng privKey: privKey];
if (success == NO) {
    NSLog(@"%@",eddsa.LastErrorText);
    return;
}

//  Examine the ed25519 key in JWK format;
NSString *jwk = [privKey GetJwk];

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json Load: jwk];
json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

//  Sample output:
//  {
//    "kty": "OKP",
//    "crv": "Ed25519",
//    "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
//    "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
//    "use": "sig"
//  }

//  In the above JWK, x is the public key, y is the private key.
//  Both are 32 bytes and are base64-url encoded.