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我正在尝试将一个私钥添加到iOS钥匙串中.证书(公钥)工作正常,但私钥拒绝...我完全混淆为什么下面的代码不起作用.

首先,我正在检查钥匙串中的当前密钥(= Keychain是密钥/值存储的情况下的密钥)是否"空闲".然后我要添加私钥.

CFStringRef labelstring = CFStringCreateWithCString(NULL, [key cStringUsingEncoding:NSUTF8StringEncoding], kCFStringEncodingUTF8);

NSArray* keys = [NSArray arrayWithObjects:(__bridge id)kSecClass,kSecAttrLabel,kSecReturnData,kSecAttrAccessible,nil];
NSArray* values = [NSArray arrayWithObjects:(__bridge id)kSecClassKey,labelstring,kCFBooleanTrue,kSecAttrAccessibleWhenUnlocked,nil];
NSMutableDictionary* searchdict = [NSMutableDictionary dictionaryWithObjects:values forKeys:keys];

CFRelease(labelstring);

NSMutableDictionary *query = searchdict;


CFTypeRef item = NULL;
OSStatus error = SecItemCopyMatching((__bridge_retained CFDictionaryRef) query, &item);

if (error)
{
    NSLog(@"Error: %ld (statuscode)", error);
}

if(error != errSecItemNotFound)
{
    SecItemDelete((__bridge_retained CFDictionaryRef) query);
}

[query setObject:(id)data forKey:(__bridge id)kSecValueData];

OSStatus status = SecItemAdd((__bridge_retained CFDictionaryRef) query, &item);

if(status)
{
    NSLog(@"Keychain error occured: %ld (statuscode)", status);
    return …