在 Objective-C 中从 iDynamo Reader 读取加密数据

Question

有谁知道有 iDynamo 读卡器 的经验？该读卡器使用 DES-CBC 来加密卡数据。有谁知道如何解密这些数据？

非常感谢您抽出时间。

Answer 1

抱歉，如果这太晚了，但可能对其他人有帮助。所以解决方案是联系 Magtek。如果您购买 Magtek 设备，请向他们索要库。我从 Magtek 获得了 libDS247.a。然后将 DS247.h 导入到您的代码中，实现 DS247Delegate。我在这里为您提供了一个示例 -

(void)deviceDidConnect
{   
if (theAlertView.visible) 
    [theAlertView dismissWithClickedButtonIndex:0 animated:NO]; 
}

- (void)deviceDidDisconnect
{
theAlertView = [[UIAlertView alloc] initWithTitle:@"Hardware Not Connected!"
                                                 message:@"Please connect the device."
                                             delegate:self 
                                cancelButtonTitle:nil otherButtonTitles:nil];
[theAlertView show];    
[theAlertView release];
}

- (void)magneticCardReadStart
{
read = YES;
[self.tableView reloadData];
}

- (void)magneticCardReadDidFinish:(NSString *)cardString
{
read = NO;

if (trackMode == 67)
{
    NSString *string = [cardString substringWithRange:NSMakeRange(6,20)];
    self.pan1 = [[string componentsSeparatedByString:@"^"] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(7+pan1.length,27)];
    self.name = [[string componentsSeparatedByString:@"^"] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(8+pan1.length+name.length,4)];
    self.ed1 = string;

    self.ed2 = @"";
    self.pan2 = @"";        
}
if (trackMode == 68)
{
    NSString *string = [cardString substringWithRange:NSMakeRange(5,20)];
    self.pan2 = [[string componentsSeparatedByString:@"="] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(6+pan2.length,4)];
    self.ed2 = string;

    self.ed1 = @"";
    self.name = @"";
    self.pan1 = @"";

}
if (trackMode == 69 || trackMode == 70)
{
    NSString *string = [cardString substringWithRange:NSMakeRange(7,20)];
    self.pan1 = [[string componentsSeparatedByString:@"^"] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(8+pan1.length,27)];
    self.name = [[string componentsSeparatedByString:@"^"] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(9+pan1.length+name.length,4)];
    self.ed1 = string;

    string = [cardString substringWithRange:NSMakeRange(83,20)];
    self.pan2 = [[string componentsSeparatedByString:@"="] objectAtIndex:0];

    string = [cardString substringWithRange:NSMakeRange(84+pan2.length,4)];
    self.ed2 = string;      
}
if (trackMode == 71)
{
    self.ed1 = @"";
    self.ed2 = @"";
    self.pan1 = @"";
    self.pan2 = @"";
    self.name = @"";        
}

[self.tableView reloadData];
}

应将 trackMode 设置为默认值 67，并且 cardString 是原始卡数据