ios 重置 iPhone 应用程序的钥匙串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/7142774/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Reset An iPhone App's Keychain
提问by Jose Cherian
I would like to know if there is a way to reset My app's keychain. I am wondering whether anything exist like
我想知道是否有办法重置我的应用程序的钥匙串。我想知道是否存在类似的东西
[NSUserDefaults resetStandardUserDefaults]
[NSUserDefaults resetStandardUserDefaults]
for keychain. Key chain is not reset even after the app is deleted. So far the only way I know is to reset them one by one from the app.
用于钥匙扣。即使删除应用程序后，钥匙链也不会重置。到目前为止，我知道的唯一方法是从应用程序中一一重置它们。
回答by Vegard
As all of the answers so far relies on that you know the identifiers you want to delete I would like to submit the following solution that deletes ALL existing keysfor the app (iOS only)
由于到目前为止所有答案都依赖于您知道要删除的标识符，因此我想提交以下解决方案，删除应用程序的所有现有密钥（仅限 iOS）
-(void)resetKeychain {
[self deleteAllKeysForSecClass:kSecClassGenericPassword];
[self deleteAllKeysForSecClass:kSecClassInternetPassword];
[self deleteAllKeysForSecClass:kSecClassCertificate];
[self deleteAllKeysForSecClass:kSecClassKey];
[self deleteAllKeysForSecClass:kSecClassIdentity];
}
-(void)deleteAllKeysForSecClass:(CFTypeRef)secClass {
NSMutableDictionary* dict = [NSMutableDictionary dictionary];
[dict setObject:(__bridge id)secClass forKey:(__bridge id)kSecClass];
OSStatus result = SecItemDelete((__bridge CFDictionaryRef) dict);
NSAssert(result == noErr || result == errSecItemNotFound, @"Error deleting keychain data (%ld)", result);
}
Swift 2.2version:
斯威夫特 2.2版本：
func resetKeychain() {
self.deleteAllKeysForSecClass(kSecClassGenericPassword)
self.deleteAllKeysForSecClass(kSecClassInternetPassword)
self.deleteAllKeysForSecClass(kSecClassCertificate)
self.deleteAllKeysForSecClass(kSecClassKey)
self.deleteAllKeysForSecClass(kSecClassIdentity)
}
func deleteAllKeysForSecClass(secClass: CFTypeRef) {
let dict: [NSString : AnyObject] = [kSecClass : secClass]
let result = SecItemDelete(dict)
assert(result == noErr || result == errSecItemNotFound, "Error deleting keychain data (\(result))")
}
Swift 3version
斯威夫特 3版本
func resetKeychain() {
deleteAllKeysForSecClass(kSecClassGenericPassword)
deleteAllKeysForSecClass(kSecClassInternetPassword)
deleteAllKeysForSecClass(kSecClassCertificate)
deleteAllKeysForSecClass(kSecClassKey)
deleteAllKeysForSecClass(kSecClassIdentity)
}
func deleteAllKeysForSecClass(_ secClass: CFTypeRef) {
let dict: [NSString : Any] = [kSecClass : secClass]
let result = SecItemDelete(dict as CFDictionary)
assert(result == noErr || result == errSecItemNotFound, "Error deleting keychain data (\(result))")
}
回答by jcrowson
KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"nameOfYourKeychain" accessGroup:nil];
[keychainItem resetKeychainItem];
Much simpler :)
简单得多:)
Edit: In response to a question asked below - what is KeychainItemWrapper?
编辑：回应下面提出的一个问题 - KeychainItemWrapper 是什么？
It's a class written by Apple that you can download here: http://developer.apple.com/library/ios/#samplecode/GenericKeychain/Listings/Classes_KeychainItemWrapper_m.html
这是 Apple 编写的类，您可以在这里下载：http: //developer.apple.com/library/ios/#samplecode/GenericKeychain/Listings/Classes_KeychainItemWrapper_m.html
Add it to your project and then import it where you would like to use it. Then use the code snippet I provided above.
将其添加到您的项目中，然后将其导入到您想要使用的位置。然后使用我上面提供的代码片段。
回答by mxcl
Block-based version of @Vegard's solution:
@Vegard 解决方案的基于块的版本：
void (^deleteAllKeysForSecClass)(CFTypeRef) = ^(CFTypeRef secClass) {
id dict = @{(__bridge id)kSecClass: (__bridge id)secClass};
OSStatus result = SecItemDelete((__bridge CFDictionaryRef) dict);
NSAssert(result == noErr || result == errSecItemNotFound, @"Error deleting keychain data (%d)", (int)result);
};
deleteAllKeysForSecClass(kSecClassGenericPassword);
deleteAllKeysForSecClass(kSecClassInternetPassword);
deleteAllKeysForSecClass(kSecClassCertificate);
deleteAllKeysForSecClass(kSecClassKey);
deleteAllKeysForSecClass(kSecClassIdentity);
For those of us who like to just drop code in without having to have helper methods.
对于我们这些喜欢直接插入代码而不必使用辅助方法的人。
回答by JimP
- (void)resetKeychainItem
{
OSStatus junk = noErr;
if (!keychainItemData) {
self.keychainItemData = [[NSMutableDictionary alloc] init];
} else if (keychainItemData){
NSMutableDictionary *tempDictionary = [self dictionaryToSecItemFormat:keychainItemData];
junk = SecItemDelete((CFDictionaryRef)tempDictionary);
if ( junk != noErr ) {
UIAlertView *dialog = [[UIAlertView alloc] initWithTitle:@"Keychain Error" message:[NSString stringWithFormat:@"A problem with updating the secure Keychain items with this information (likely, this email address information is duplicated in another Player). Error code: %d %@", junk, [self resultText:-junk]] delegate:self cancelButtonTitle:NSLocalizedStringFromTable(@"Ok", @"Localizable", @"display text") otherButtonTitles:nil];
[dialog show];
[dialog release];
//NSAssert( junk == noErr || junk == errSecItemNotFound, @"Problem deleting current dictionary." );
return;
}
}
// Default attributes for keychain item.
[keychainItemData setObject:@"" forKey:(id)kSecAttrAccount];
[keychainItemData setObject:@"" forKey:(id)kSecValueData];
[keychainItemData setObject:@"" forKey:(id)kSecAttrLabel];
[keychainItemData setObject:@"" forKey:(id)kSecAttrDescription];
[keychainItemData setObject:@"" forKey:(id)kSecAttrComment];
// Default data for keychain item.
[keychainItemData setObject:@"" forKey:(id)kSecAttrModificationDate];
[keychainItemData setObject:@"" forKey:(id)kSecAttrService];
}
