重置iPhone应用程序的钥匙串 [英] Reset An iPhone App's Keychain

问题描述

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

I would like to know if there is a way to reset My app's keychain. I am wondering whether anything exist like

[NSUserDefaults resetStandardUserDefaults]

用于钥匙串。即使在删除应用程序后，密钥链也不会重置。到目前为止，我所知道的唯一方法是从应用程序中逐个重置它们。

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.

推荐答案

因为到目前为止所有的答案都依赖于您知道要删除的标识符我想提交以下内容删除应用的所有现有密钥的解决方案（仅适用于iOS）

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 keys for the app (iOS only)

-(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 2.2 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 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))")
}

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