secItemAdd快速保持返回-50错误 [英] secItemAdd keep return -50 error in swift

问题描述

尝试在安全链中添加项目时保持-50.

Keep getting -50 when trying to add an item in security chain.

    var query = [String:AnyObject]()
    query[kSecClass as String] = kSecClassGenericPassword
    query[kSecAttrAccount as String] = "a"
    query[kSecValueData as String] = "b"
    let result = SecItemAdd(query as CFDictionary, nil);

结果是-50.无法弄清楚原因，需要帮助..在此先感谢.

result is -50. Can not figure out why, need help.. thanks in advance.

推荐答案

我相信kSecValueData键的值必须是NSData，而不是String或NSString.尝试将字符串编码为数据(例如UTF-8编码).未经测试的代码段:

I believe the value for the kSecValueData key needs to be an NSData, not a String or NSString. Try encoding your string to data (with e.g. UTF-8 encoding). Untested snippet:

query[kSecValueData as String] = "b".dataUsingEncoding(NSUTF8StringEncoding)

为将来参考，错误代码-50对应于errSecParam，SecBase.h标头中的错误代码表示为:传递给函数的一个或多个参数无效."如果再次遇到此错误，请尝试更改查询字典中传递的值.

For future reference, the error code -50 corresponds to errSecParam, which the SecBase.h header documents as meaning: "One or more parameters passed to a function were not valid." If you see this error again, try changing the values that you're passing in with your query dictionary.

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