问如何以人类可读的形式获取iOS根证书列表

EN

- (void) readCert2 {
    NSMutableDictionary *query = [NSMutableDictionary dictionaryWithObjectsAndKeys:
//                                (__bridge id)kCFBooleanTrue, (__bridge id)kSecReturnAttributes,
                                (__bridge id)kCFBooleanTrue, (__bridge id)kSecReturnRef,
                                  (__bridge id)kSecMatchLimitAll, (__bridge id)kSecMatchLimit,
                                  nil];
    NSArray *secItemClasses = [NSArray arrayWithObjects:
//                             (__bridge id)kSecClassGenericPassword,
//                             (__bridge id)kSecClassInternetPassword,
                               (__bridge id)kSecClassCertificate,
//                             (__bridge id)kSecClassKey,
//                             (__bridge id)kSecClassIdentity,
                               nil];
    for (id secItemClass in secItemClasses) {
        [query setObject:secItemClass forKey:(__bridge id)kSecClass];

        CFTypeRef result = NULL;
        OSStatus status =  SecItemCopyMatching((__bridge CFDictionaryRef)query, &result);
        NSLog(@"%@", (__bridge id)result);
        if (result != NULL) CFRelease(result);
    }
}