1.通过绕过证书认证的方法进行请求
#pragma mark - https 认证
- (void)certifyHttps:(NSString *)httpsUrl {
_bHttpsCertifySuccess = NO; // 默认失败
NSURLRequest *certifyRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:httpsUrl]];
NSURLConnection* conn = [[NSURLConnection alloc] initWithRequest:certifyRequest delegate:self];
[conn start];
}
- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection *)connection {
return NO;
}
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
NSLog(@"APPdelegate didReceiveAuthenticationChallenge %@ %zd", [[challenge protectionSpace] authenticationMethod], (ssize_t) [challenge previousFailureCount]);
if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
[[challenge sender] useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
[[challenge sender] continueWithoutCredentialForAuthenticationChallenge: challenge];
}
_bHttpsCertifySuccess = YES;
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
_bHttpsCertifySuccess = NO;
}
客户端要实现 https 验证
1.系统验证
2.本地证书验证
NSURLConnection支持HTTPS的实现
// Now start the connection
NSURL * httpsURL = [NSURL URLWithString:@"https://www.google.com"];
self.connection = [NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL:httpsURL] delegate:self];
//回调
- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
//1)获取trust object
SecTrustRef trust = challenge.protectionSpace.serverTrust;
SecTrustResultType result;
//2)SecTrustEvaluate对trust进行验证
OSStatus status = SecTrustEvaluate(trust, &result);
if (status == errSecSuccess &&
(result == kSecTrustResultProceed ||
result == kSecTrustResultUnspecified)) {
//3)验证成功，生成NSURLCredential凭证cred，告知challenge的sender使用这个凭证来继续连接
NSURLCredential *cred = [NSURLCredential credentialForTrust:trust];
[challenge.sender useCredential:cred forAuthenticationChallenge:challenge];
} else {
//5)验证失败，取消这次验证流程
[challenge.sender cancelAuthenticationChallenge:challenge];
}
}
客户端本地证书验证
1.生成证书
openssl x509 -in csc108.crt -out csc108.cer -outform der
2.本地证书验证（安全性高）
- (void)handleZiQianCers {
NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"csc108" ofType:@"cer"];; // 证书路径
NSData *cerData = [NSData dataWithContentsOfFile:cerPath];
SecCertificateRef certificate = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)(cerData));
if (certificate) {
self.trustedCertificates = @[CFBridgingRelease(certificate)];
}
}
- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
//1 获取trust object
SecTrustRef trust = challenge.protectionSpace.serverTrust;
SecTrustResultType result;
//注意：这里将之前导入的证书设置成下面验证的Trust Object的anchor certificate
SecTrustSetAnchorCertificates(trust, (__bridge CFArrayRef)self.trustedCertificates);
//2 SecTrustEvaluate会查找前面SecTrustSetAnchorCertificates设置的证书或者系统默认提供的证书，对trust进行验证
OSStatus status = SecTrustEvaluate(trust, &result);
if (status == errSecSuccess &&
(result == kSecTrustResultProceed ||
result == kSecTrustResultUnspecified)) {
//3 验证成功，生成NSURLCredential凭证cred，告知challenge的sender使用这个凭证来继续连接
NSURLCredential *cred = [NSURLCredential credentialForTrust:trust];
[challenge.sender useCredential:cred forAuthenticationChallenge:challenge];
} else {
//4 验证失败，取消这次验证流程
[challenge.sender cancelAuthenticationChallenge:challenge];
}
}
AFNetworking上配置对HTTPS
NSURL * url = [NSURL URLWithString:@"https://www.google.com"];
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
AFSecurityPolicy * securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate];
//allowInvalidCertificates 是否允许无效证书（也就是自建的证书），默认为NO
//如果是需要验证自建证书，需要设置为YES
securityPolicy.allowInvalidCertificates = YES;
//validatesDomainName 是否需要验证域名，默认为YES；
//假如证书的域名与你请求的域名不一致，需把该项设置为NO；如设成NO的话，即服务器使用其他可信任机构颁发的证书，也可以建立连接，这个非常危险，建议打开。
//置为NO，主要用于这种情况：客户端请求的是子域名，而证书上的是另外一个域名。因为SSL证书上的域名是独立的，假如证书上注册的域名是www.google.com，那么mail.google.com是无法验证通过的；当然，有钱可以注册通配符的域名*.google.com，但这个还是比较贵的。
//如置为NO，建议自己添加对应域名的校验逻辑。
securityPolicy.validatesDomainName = YES;
//validatesCertificateChain 是否验证整个证书链，默认为YES
//设置为YES，会将服务器返回的Trust Object上的证书链与本地导入的证书进行对比，这就意味着，假如你的证书链是这样的：
//GeoTrust Global CA
// Google Internet Authority G2
// *.google.com
//那么，除了导入*.google.com之外，还需要导入证书链上所有的CA证书（GeoTrust Global CA, Google Internet Authority G2）；
//如是自建证书的时候，可以设置为YES，增强安全性；假如是信任的CA所签发的证书，则建议关闭该验证，因为整个证书链一一比对是完全没有必要（请查看源代码）；
securityPolicy.validatesCertificateChain = NO;
manager.securityPolicy = securityPolicy;
补充
NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"csc108" ofType:@"cer"];
NSData *cerData = [NSData dataWithContentsOfFile:cerPath];
security.pinnedCertificates = [[NSSet alloc] initWithObjects:cerData, nil];
网友评论