NSURLCredential创建返回null

Question

我试图NSURLCredential通过使用该+credentialWithIdentity:certificates:persistence:方法创建一个.然而,它返回零.

我已经完成了以下步骤.首先,我创建一个私钥和公钥,然后生成一个证书并将其添加到我的钥匙串.第一个问题,当我这样做时:

static const uint8_t certificateIdentifier[] = "test.certificate";    
NSData * certificateTag = [NSData dataWithBytes:certificateIdentifier length:sizeof(certificateIdentifier)];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef) certificadoData);
NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
[dictionary setObject:(__bridge id)kSecClassCertificate forKey:(__bridge id)kSecClass];
[dictionary setObject:certificateTag forKey:(__bridge id)kSecAttrApplicationTag];
[dictionary setObject:(__bridge id)(cert) forKey:(__bridge id<NSCopying>)(kSecValueRef)];
OSStatus status = SecItemAdd((__bridge CFDictionaryRef)dictionary, NULL);

状态告诉我,我certificateTag的论点无效.如果我没有放这个标签,我可以将证书放在我的钥匙串上,然后在方法内

(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge

我放

SecIdentityRef myIdentity;
SecCertificateRef myCertificate;

NSMutableDictionary * queryCertificate = [[NSMutableDictionary alloc] init];
[queryCertificate setObject:(__bridge id)kSecClassIdentity forKey:(__bridge id)kSecClass];
[queryCertificate setObject:[NSNumber numberWithBool:YES] forKey:(__bridge id)kSecReturnRef];

OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)queryCertificate, (CFTypeRef *)&myIdentity);

status = SecIdentityCopyCertificate(myIdentity, &myCertificate);

const void *certs[] = { myCertificate };
CFArrayRef certsArray = CFArrayCreate(NULL, certs, 1, NULL);
NSURLCredential *credential = [NSURLCredential credentialWithIdentity:myIdentity certificates:(__bridge NSArray*)certsArray persistence:NSURLCredentialPersistencePermanent];

[[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];

我获得了身份和证书,但凭证不会返回任何内容,而不是错误,只是null.知道为什么吗？

Answer 1

在我的问题的第一部分中，我试图在 kSecClassCertificate 中添加 kSecAttrApplicationTag，但 kSecAttrApplicationTag 仅在 kSecClassKey 中接受。

在第二部分中，凭证 ( <NSURLCredential: 0x1e20d140>: (null)) 的结果是正确的，这个“null”并不意味着该值实际上是 null。保持这种方式我的代码工作正常。