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iOSのコードに付属している自己署名証明書を使用して、サーバーへのSSL接続を作成したいと思います。そうすれば、誰かが高レベルの「信頼できる」証明書機関にアクセスできる、より高度な中間者攻撃について心配する必要がなくなります。私は、Appleの標準的な方法であると私が信じている方法を使用してそうすることに問題があります。

ここにある手順による証明書の生成

# Create root CA & private key
openssl req -newkey rsa:4096 -sha512 -days 9999 -x509 -nodes -out root.pem.cer
# Create a certificate signing request
openssl req -newkey rsa:4096 -sha512 -nodes -out ssl.csr -keyout ssl.key
# Create an OpenSSL Configuration file from http://svasey.org/projects/software-usage-notes/ssl_en.html
vim openssl.conf
# Create the indexes
touch certindex
echo 000a > certserial
echo 000a > crlnumber
# Generate SSL certificate 
openssl ca -batch -config openssl.conf -notext -in ssl.csr -out ssl.pem.cer
# Create Certificate Revocation List
openssl ca -config openssl.conf -gencrl -keyfile privkey.pem -cert root.pem.cer -out root.crl.pem
openssl crl -inform PEM -in root.crl.pem -outform DER -out root.crl && rm root.crl.pem

そしてiOSコード:

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
  NSURLProtectionSpace *protectionSpace = [challenge protectionSpace];
  if ([protectionSpace authenticationMethod] == NSURLAuthenticationMethodServerTrust) {
    // Load anchor cert.. also tried this with both certs and it doesn't seem to matter
    NSString *path = [[NSBundle mainBundle] pathForResource:@"root.der" ofType:@"crt"];
    NSData *data = [[NSData alloc] initWithContentsOfFile:path];
    SecCertificateRef anchorCert = SecCertificateCreateWithData(kCFAllocatorDefault, (__bridge CFDataRef)data);
    CFMutableArrayRef anchorCerts = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
    CFArrayAppendValue(anchorCerts, anchorCert);

    // Set anchor cert
    SecTrustRef trust = [protectionSpace serverTrust];
    SecTrustSetAnchorCertificates(trust, anchorCerts);
    SecTrustSetAnchorCertificatesOnly(trust, YES); // only use that certificate
    CFRelease(anchorCert);
    CFRelease(anchorCerts);

    // Validate cert
    SecTrustResultType secresult = kSecTrustResultInvalid;
    if (SecTrustEvaluate(trust, &secresult) != errSecSuccess) {
      [challenge.sender cancelAuthenticationChallenge:challenge];
      return;
    }

    switch (secresult) {
      case kSecTrustResultInvalid:
      case kSecTrustResultDeny:
      case kSecTrustResultFatalTrustFailure:
      case kSecTrustResultOtherError:
      case kSecTrustResultRecoverableTrustFailure: { 
        // !!! It's always kSecTrustResultRecoverableTrustFailure, aka 5
        NSLog(@"Failing due to result: %lu", secresult);
        [challenge.sender cancelAuthenticationChallenge:challenge];
        return;
      }

      case kSecTrustResultUnspecified: // The OS trusts this certificate implicitly.
      case kSecTrustResultProceed: { // The user explicitly told the OS to trust it.
        NSURLCredential *credential = [NSURLCredential credentialForTrust:trust];
        [challenge.sender useCredential:credential forAuthenticationChallenge:challenge];
        return;
      }
      default: ;
        /* It's somebody else's key. Fall through. */
    }
    /* The server sent a key other than the trusted key. */
    [connection cancel];

    // Perform other cleanup here, as needed.
  } else {
    NSLog(@"In weird space... not handling authentication method: %@", [protectionSpace authenticationMethod]);
    [connection cancel];
  }
}

結果として常にkSecTrustResultRecoverableTrustFailureを取得しています。Appleのコードを使って変更しようとしたので、これはローカルホストの問題ではないと思います。何をすべきか?

ありがとう!

4

2 に答える 2

0

信頼結果がkSecTrustResultRecoverableTrustFailureの場合、障害から回復できる可能性があります。

回避策は次のとおりです。

https://developer.apple.com/library/mac/#documentation/security/conceptual/CertKeyTrustProgGuide/iPhone_Tasks/iPhone_Tasks.html#//apple_ref/doc/uid/TP40001358-CH208-SW8

于 2013-01-01T10:04:41.167 に答える