iOS PayUMoney SDK-key is not valid

Question

I have integrate payumoney payment gateway. And I am able to create correct hash with the key, but at the end am getting an alert message as "key is not valid".what would be the problem?

Here is the code. I use the link "https://www.payumoney.com/payment-gateway-integration-guide.html" to download the payumoney SDK.

- (IBAction)startPaymentTapped:(id)sender {

    [self setPaymentParameters];

    //Start the payment flow
    PUMMainVController *paymentVC = [[PUMMainVController alloc] init];
    UINavigationController *paymentNavController = [[UINavigationController alloc] initWithRootViewController:paymentVC];

    [self presentViewController:paymentNavController
                       animated:YES
                     completion:nil];
}

- (void)setPaymentParameters {
    self.params = [PUMRequestParams sharedParams];
    self.params.environment = PUMEnvironmentProduction;
    self.params.amount = self.amount.text;
    self.params.key = @"mykeyvalue";
    self.params.merchantid = @"merchantid";
    self.params.txnid = [self  getRandomString:2];
    self.params.surl = @"https://www.payumoney.com/mobileapp/payumoney/success.php";
    self.params.furl = @"https://www.payumoney.com/mobileapp/payumoney/failure.php";
    self.params.delegate = self;
    self.params.firstname = self.firstname.text;
    self.params.productinfo = self.productinfo.text;
    self.params.email = self.email.text;
    self.params.phone = @"";
    self.params.udf1 = @"";
    self.params.udf2 = @"";
    self.params.udf3 = @"";
    self.params.udf4 = @"";
    self.params.udf5 = @"";
    self.params.udf6 = @"";
    self.params.udf7 = @"";
    self.params.udf8 = @"";
    self.params.udf9 = @"";
    self.params.udf10 = @"";

    self.params.hashValue = [self getHash];

}

- (NSString *)getRandomString:(NSInteger)length {
    NSMutableString *returnString = [NSMutableString stringWithCapacity:length];
    NSString *numbers = @"0123456789";

    // First number cannot be 0
    [returnString appendFormat:@"%C", [numbers characterAtIndex:(arc4random() % ([numbers length]-1))+1]];

    for (int i = 1; i < length; i++) {
        [returnString appendFormat:@"%C", [numbers characterAtIndex:arc4random() % [numbers length]]];
    }
    return returnString;
}
- (NSString*)getHash {

    NSString *hashSequence = [NSString stringWithFormat:@"mykeyvalue|%@|%@|%@|%@|%@|||||||||||salt",self.params.txnid, self.params.amount, self.params.productinfo,self.params.firstname, self.params.email];

    NSString *rawHash = [[self createSHA512:hashSequence] description];
    NSString *hash = [[[rawHash stringByReplacingOccurrencesOfString:@"<" withString:@""]stringByReplacingOccurrencesOfString:@">" withString:@""]stringByReplacingOccurrencesOfString:@" " withString:@""];

    return hash;
}
- (NSData *) createSHA512:(NSString *)source {

    const char *s = [source cStringUsingEncoding:NSASCIIStringEncoding];
    NSData *keyData = [NSData dataWithBytes:s length:strlen(s)];
    uint8_t digest[CC_SHA512_DIGEST_LENGTH] = {0};
    CC_SHA512(keyData.bytes, (CC_LONG)keyData.length, digest);

    NSData *output = [NSData dataWithBytes:digest length:CC_SHA512_DIGEST_LENGTH];
    NSLog(@"out --------- %@",output);
    return output;
}

Answer 1

Please check data when you send payumoney for create hash key with server api data for create your hash key.