问题
I would like to know how to effectively store the access token, refresh tokens and their expirations in the iOS keychain.
All the examples I have seen seem to store only one key-value combination. How do we store multiple key values for one keychain identifier?
If there is a better way to store the above, please let me know.
回答1:
You will first want to build a NSDictionary with the key/values you want.
Next, you could use something like Lockbox to store that NSDictionary to the keychain, using the provided setDictionary:forKey: interface.
UPDATE: To change values stored in that dictionary, you only have to pass by a NSMutableDictionary (that's the common way of doing):
NSMutableDictionary *mutableDict = [[LockBox dictionaryForKey:@"YourRefreshTokenDictionaryKey"] mutableCopy];
mutableDict[@"access_token"] = @"NewAccessToken";
[LockBox setDictionary:mutableDict forKey:@"YourRefreshTokenDictionaryKey"];
FYI, a NSMutableDictionary is a subclass of NSDictionary, so it's safe to save that back directly to the keychain!
来源：https://stackoverflow.com/questions/29949609/storing-access-token-and-refresh-token-in-keychain