ios - 从 KeychainItem 中检索值

Question

我尝试从 KeyChainItem 中检索一个字符串，其存储如下:

@property (nonatomic, strong) KeychainItemWrapper *account;
if (account == nil) {
  account = [[KeychainItemWrapper alloc] initWithIdentifier:@"test" accessGroup:nil]
       }

[account setObject:self.username forKey:(__bridge id)(kSecAttrAccount)];
[account setObject:@"c6a07d48aabf35b26e1623fb" forKey:(__bridge id)(kSecValueData)];

当我检索到它时如下:

  KeychainItemWrapper *wrapper = [[KeychainItemWrapper alloc] initWithIdentifier:@"test" accessGroup:nil];
        self.account = wrapper;
    }

    NSString *prevUsername = [account objectForKey:(__bridge id)(kSecAttrAccount)];
    NSString *token = [account objectForKey:(__bridge id)(kSecValueData)];

我收到了 NSLog(@"%@",token) 的以下值；

<63346264 32636462 64653234 34313862 38633537 31326235 66653464 63303731>

如何取回我保存的字符串？我在这里做错了什么吗？

Answer 1

试试这个:

NSData *nameData= [account objectForKey:(__bridge id)(kSecAttrAccount)];
NSData *tokenData = [account objectForKey:(__bridge id)(kSecValueData)];

NSString *prevUsername = [[NSString alloc] initWithData:nameData encoding:NSUTF8StringEncoding];

NSString *token = [[NSString alloc] initWithData:tokenData encoding:NSUTF8StringEncoding];