亚洲欧美日韩熟女|做爱高潮视频网址|国产一区二区三级片|国产Av中文字幕www.性色av|亚洲婷婷永久免费|国产高清中文字幕|欧美变态网站久re视频精品|人妻AV鲁丝第一页|天堂AV一区二区在线观看|综合 91在线精品

保存iOS密碼(簡單使用keychain)

2023-05-22


在iOS中保存密碼，如果你想追求安全，那么使用蘋果自己的Keychain。 毫無疑問，Services是最好的選擇。若要使用Keychainn系統(tǒng) Services，首先要添加Security.framework。


Keychain Services為存儲和更新keychainninn帶來了一系列api。 item：


SecItemAdd（添加）


SecItemUpdate（更新）


SecItemCopyMatching（查找）


SecItemDelete（刪掉）


直接使用這些方法有點麻煩，需要對對象進行包裝。我寫了一個典型的例子，只是用來存儲賬戶密碼，以實現(xiàn)記憶密碼的功能。


以下是一些代碼，完整的項目下載：https://github.com/tenric/KeyChainDemo


MyKeyChainHelper.h








#import 

@interface MyKeyChainHelper : NSObject

  (void) saveUserName:(NSString*)userName 
      userNameService:(NSString*)userNameService 
             psaaword:(NSString*)pwd 
      psaawordService:(NSString*)pwdService;

  (void) deleteWithUserNameService:(NSString*)userNameService 
                   psaawordService:(NSString*)pwdService;

  (NSString*) getUserNameWithService:(NSString*)userNameService;

  (NSString*) getPasswordWithService:(NSString*)pwdService;

@end







MyKeyChainHelper.m








#import "MyKeyChainHelper.h"

@implementation MyKeyChainHelper

  (NSMutableDictionary *)getKeyChainQuery:(NSString *)service {  
    return [NSMutableDictionary dictionaryWithObjectsAndKeys:  
            (id)kSecClassGenericPassword,(id)kSecClass,  
            service, (id)kSecAttrService,  
            service, (id)kSecAttrAccount,  
            (id)kSecAttrAccessibleAfterFirstUnlock,(id)kSecAttrAccessible,  
            nil];  
}  

  (void) saveUserName:(NSString*)userName 
      userNameService:(NSString*)userNameService 
             psaaword:(NSString*)pwd 
      psaawordService:(NSString*)pwdService
{
    NSMutableDictionary *keychainQuery = [self getKeyChainQuery:userNameService];  
    SecItemDelete((CFDictionaryRef)keychainQuery);  
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:userName] forKey:(id)kSecValueData];  
    SecItemAdd((CFDictionaryRef)keychainQuery, NULL); 
    keychainQuery = [self getKeyChainQuery:pwdService];  
    SecItemDelete((CFDictionaryRef)keychainQuery);  
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:pwd] forKey:(id)kSecValueData];  
    SecItemAdd((CFDictionaryRef)keychainQuery, NULL); 
}

  (void) deleteWithUserNameService:(NSString*)userNameService 
                   psaawordService:(NSString*)pwdService
{
    NSMutableDictionary *keychainQuery = [self getKeyChainQuery:userNameService];  
    SecItemDelete((CFDictionaryRef)keychainQuery); 
    keychainQuery = [self getKeyChainQuery:pwdService];  
    SecItemDelete((CFDictionaryRef)keychainQuery); 
}

  (NSString*) getUserNameWithService:(NSString*)userNameService
{
    NSString* ret = nil;  
    NSMutableDictionary *keychainQuery = [self getKeyChainQuery:userNameService];  
    [keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];  
    [keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];  
    CFDataRef keyData = NULL;  
    if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) 
    {  
        @try 
        {  
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(NSData *)keyData];  
        } 
        @catch (NSException *e) 
        {  
            NSLog(@"Unarchive of %@ failed: %@", userNameService, e);  
        }
        @finally 
        {  
        }  
    }  
    if (keyData)   
        CFRelease(keyData);  
    return ret; 
}

  (NSString*) getPasswordWithService:(NSString*)pwdService
{
    NSString* ret = nil;  
    NSMutableDictionary *keychainQuery = [self getKeyChainQuery:pwdService];  
    [keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];  
    [keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];  
    CFDataRef keyData = NULL;  
    if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) 
    {  
        @try 
        {  
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(NSData *)keyData];  
        } 
        @catch (NSException *e) 
        {  
            NSLog(@"Unarchive of %@ failed: %@", pwdService, e);  
        }
        @finally 
        {  
        }  
    }  
    if (keyData)   
        CFRelease(keyData);  
    return ret;
}
@end





本文僅代表作者觀點，版權(quán)歸原創(chuàng)者所有，如需轉(zhuǎn)載請在文中注明來源及作者名字。

免責(zé)聲明：本文系轉(zhuǎn)載編輯文章，僅作分享之用。如分享內(nèi)容、圖片侵犯到您的版權(quán)或非授權(quán)發(fā)布，請及時與我們聯(lián)系進行審核處理或刪除，您可以發(fā)送材料至郵箱：service@tojoy.com