Question

我目前正在使用SocketRocket作为我的iOS应用程序的WebSocket实现，并希望将我的服务器CA作为具有SR_SSLPinnedCertificates属性的可信证书。我正在寻找一个加载一个或多个证书以传递到SocketRocket的好例子。我有以下代码可以工作，但我不确定它是否正确或是否有更简单的方法。

CFArrayRef keyref = NULL;
NSString *path = [[NSBundle mainBundle] pathForResource:@"certificate" ofType:@"p12"];
NSData *data = [[NSData alloc] initWithContentsOfFile:path];
OSStatus status = SecPKCS12Import((__bridge CFDataRef)data, (__bridge CFDictionaryRef)[NSDictionary dictionaryWithObject:@"eftl_key_pass" forKey:(__bridge id)kSecImportExportPassphrase], &keyref);
if (status == noErr) {
    CFDictionaryRef identityDict = CFArrayGetValueAtIndex(keyref, 0);
    SecIdentityRef identityRef = (SecIdentityRef)CFDictionaryGetValue(identityDict, kSecImportItemIdentity);
    SecCertificateRef certRef = NULL;
    SecIdentityCopyCertificate(identityRef, &certRef);
}

Answer 1

使用SocketRocket进行证书固定：

首先，我们需要从NSURLRequest初始化SocketRocket，而不是从NSURL初始化。

NSURL *url = [[NSURL alloc] initWithString:@"wss://path-to-socket:1234"];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];

然后，让我们设置证书。您的证书必须采用二进制DER格式，而不是base64编码的PEM。证书文件应该在您的主要包中。

NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"myOwnCertificate" ofType:@"cer"];
NSData *certData = [[NSData alloc] initWithContentsOfFile:cerPath];
CFDataRef certDataRef = (__bridge CFDataRef)certData;
SecCertificateRef certRef = SecCertificateCreateWithData(NULL, certDataRef);
id certificate = (__bridge id)certRef;

然后，我们将请求的固定证书设置为一个只包含我们之前设置的数组的数组。

[request setSR_SSLPinnedCertificates:@[certificate]];

现在我们可以完成套接字。

SRWebSocket *socket = [[SRWebSocket alloc] initWithURLRequest:request];       
[socket open];

Answer 2

对于Swift中的代码：

if let pinnedCertificatePath = NSBundle.mainBundle().pathForResource("subdomain.yourwebsite.com", ofType: "der"),
let pinnedCertificateData = NSData(contentsOfFile: pinnedCertificatePath),
let cert = SecCertificateCreateWithData(nil, pinnedCertificateData) {
    request.SR_SSLPinnedCertificates = [cert]

    // make the websocket call!
    let ws = SRWebSocket(URLRequest: request)
    // configure the websocket
    ws.open()
} else {
    NSLog("Failed to open websocket, could not find pinned certificate!")
}

SocketRocket和iOS证书固定

2 个答案: