我正在尝试根据 mbinna 更新我的钥匙串(keychain)项的 kSecAttrAccessible问题。
问题是以下代码为 updateItemStatus
变量返回 -50。我看了一个 similar question about it然后从我的查询 (newQuery
) 中删除了 kSecReturnRef
属性,但它仍然不起作用并返回 -50,这意味着“传递给函数的一个或多个参数无效”
我做错了什么?
NSString *privateKeyAttrTag = @"mykeytag";
NSDictionary *getQuery = [NSDictionary dictionaryWithObjectsAndKeys:
kSecClassKey, kSecClass,
privateKeyAttrTag, kSecAttrApplicationTag,
kSecAttrKeyTypeRSA, kSecAttrKeyType,
@YES, kSecReturnRef,
kSecAttrAccessibleWhenUnlocked, kSecAttrAccessible, nil];
CFTypeRef dataTypeRef = NULL;
OSStatus status = SecItemCopyMatching(
(__bridge CFDictionaryRef)getQuery, &dataTypeRef);
if (status==errSecSuccess && dataTypeRef != NULL) {
NSData *data = (__bridge NSData *)dataTypeRef;
NSDictionary *newQuery = [NSDictionary dictionaryWithObjectsAndKeys:
kSecClassKey, kSecClass,
privateKeyAttrTag, kSecAttrApplicationTag,
kSecAttrKeyTypeRSA, kSecAttrKeyType,
kSecAttrAccessibleWhenUnlocked, kSecAttrAccessible, nil];
NSDictionary *updateAttrs = [NSDictionary dictionaryWithObjectsAndKeys:
kSecAttrAccessibleAfterFirstUnlock, kSecAttrAccessible,
(CFDataRef)data, kSecValueData, nil];
OSStatus updateItemStatus = SecItemUpdate(
(__bridge CFDictionaryRef)newQuery, (__bridge CFDictionaryRef)updateAttrs);
// updateItemStatus == -50, which means "One or more parameters passed to a function were not valid."
}
最佳答案
问题是因为 dataTypeRef
本身不是 NSData
,它是一个包含数据的 Dictionary
。
完整代码:
NSString *keyTag = @"mykeytag";
NSDictionary *getQuery = @{
(NSString *)kSecClass: (NSString *)kSecClassKey,
(NSString *)kSecAttrApplicationTag: keyTag,
(NSString *)kSecAttrKeyType: (NSString *)kSecAttrKeyTypeRSA,
(NSString *)kSecReturnRef: @YES,
(NSString *)kSecAttrAccessible: (NSString *)kSecAttrAccessibleWhenUnlocked,
(NSString *)kSecReturnData: @YES
};
CFDictionaryRef item = NULL;
OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)getQuery, (CFTypeRef *)&item);
if (status == errSecSuccess && item != NULL) {
NSDictionary *itemDictionary = (__bridge_transfer NSDictionary *)item;
NSMutableDictionary *updateItem = [NSMutableDictionary dictionaryWithDictionary:itemDictionary];
[updateItem setObject:[getQuery objectForKey:(id)kSecClass] forKey:(id)kSecClass];
NSData *data = itemDictionary[(id)kSecValueData];
NSDictionary *attributesToUpdate = [NSDictionary dictionaryWithObjectsAndKeys:
(NSString *)kSecAttrAccessibleAfterFirstUnlock,
kSecAttrAccessible,
(CFDataRef)data,
kSecValueData,
nil];
OSStatus updateItemStatus = SecItemUpdate((__bridge CFDictionaryRef)updateItem,
(__bridge CFDictionaryRef)attributesToUpdate);
}
关于ios - 使用 SecItemUpdate 更新钥匙串(keychain) kSecAttrAccessible 返回 -50,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57617499/