Objective-C

Set the JWS Payload

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPayload, which sets the content to be signed. The charset converts the text to bytes, and a flag controls whether a byte-order mark is included.

Background. JWS (JSON Web Signature) integrity-protects a payload with a signature or MAC. The header alg names the algorithm; this example uses HMAC-SHA256 (HS256) with a symmetric MAC key.

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Objective-C

#import <CkoJws.h>

BOOL success = NO;

CkoJws *jws = [[CkoJws alloc] init];

//  Set the payload (the content to be signed).  The 2nd argument is the charset used to convert the
//  text to bytes, and the 3rd controls whether a byte-order mark is included.
BOOL bIncludeBom = NO;
success = [jws SetPayload: @"This is the content to sign." charset: @"utf-8" includeBom: bIncludeBom];
if (success == NO) {
    NSLog(@"%@",jws.LastErrorText);
    return;
}

NSLog(@"%@",@"Payload set.");