Question

我在iOS上有杂项钥匙串项目（可能由旧版app编写），我需要删除。有没有一种简单的方法来实现这一目标？

Answer 1

为所有班级做

NSArray *secItemClasses = @[(__bridge id)kSecClassGenericPassword,
                       (__bridge id)kSecClassInternetPassword,
                       (__bridge id)kSecClassCertificate,
                       (__bridge id)kSecClassKey,
                       (__bridge id)kSecClassIdentity];
for (id secItemClass in secItemClasses) {
    NSDictionary *spec = @{(__bridge id)kSecClass: secItemClass};
    SecItemDelete((__bridge CFDictionaryRef)spec);
}

对于Swift：

    let secItemClasses =  [kSecClassGenericPassword, kSecClassInternetPassword, kSecClassCertificate, kSecClassKey, kSecClassIdentity]
    for itemClass in secItemClasses {
        let spec: NSDictionary = [kSecClass: itemClass]
        SecItemDelete(spec)
    }

Answer 2

如何删除应用程序可访问的所有钥匙串项
的<{3}}的Xamarin iOS版本（MonoTouch）如下所示：

foreach (var recordKind in new []{ SecKind.GenericPassword, SecKind.Certificate, SecKind.Identity, SecKind.InternetPassword, SecKind.Key, }) { SecRecord query = new SecRecord(recordKind); SecKeyChain.Remove(query); }

如果您想确保删除记录，可以在开发期间使用此代码检查特定类型的KeyChain中的项目数：

SecStatusCode scc; var records = SecKeyChain.QueryAsRecord(new SecRecord(SecKind.GenericPassword), 1000, out scc);

Answer 3

我在Swift中重写了Daij-Djan的答案：

let secItemClasses = [kSecClassGenericPassword,
    kSecClassInternetPassword,
    kSecClassCertificate,
    kSecClassKey,
    kSecClassIdentity]
for secItemClass in secItemClasses {
    let dictionary = [kSecClass as String:secItemClass]
    SecItemDelete(dictionary as CFDictionary)
}

Answer 4

感谢Daij-Djan我得到了这个解决方案：

for (id secclass in @[
     (__bridge id)kSecClassGenericPassword,
     (__bridge id)kSecClassInternetPassword,
     (__bridge id)kSecClassCertificate,
     (__bridge id)kSecClassKey,
     (__bridge id)kSecClassIdentity]) {
    NSMutableDictionary *query = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                  secclass, (__bridge id)kSecClass,
                                  nil];

    SecItemDelete((__bridge CFDictionaryRef)query);        
}

Answer 5

快速版本

import Foundation
import Security


public class Keychain: NSObject {
    public class func logout()  {
      let secItemClasses =  [kSecClassGenericPassword, kSecClassInternetPassword, kSecClassCertificate, kSecClassKey, kSecClassIdentity]
      for itemClass in secItemClasses {
        let spec: NSDictionary = [kSecClass: itemClass]
        SecItemDelete(spec)
      }
   }
}

用法：

Keychain.logout()

Answer 6

您可以查看Utilities文件夹中的KeyChain Access应用程序。如果启动应用程序并单击“所有项目”，则应显示使用此特定计算机创建的所有项目。开发人员通常以com开头。

Answer 7

不幸的是，此问题的所有答案似乎都已过时（自 iOS 7.0+ 起），因为它们不会删除设置了 kSecAttrSynchronizable 标志的钥匙串条目（允许通过 iCloud 同步到其他设备）。

要删除此类条目，需要在删除查询中添加一个条目，指定 kSecAttrSynchronizable: kSecAttrSynchronizableAny：

let secItemClasses = [kSecClassGenericPassword,
    kSecClassInternetPassword,
    kSecClassCertificate,
    kSecClassKey,
    kSecClassIdentity]
for secItemClass in secItemClasses {
    let query: NSDictionary = [
        kSecClass as String: secItemClass,
        kSecAttrSynchronizable as String: kSecAttrSynchronizableAny
    ]
    SecItemDelete(query)
}

如何删除应用程序可访问的所有钥匙串项？

7 个答案: