Keychain简单使用

最新推荐文章于 2024-03-07 18:35:36 发布

原创最新推荐文章于 2024-03-07 18:35:36 发布 · 648 阅读

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#import <Foundation/Foundationh> 
#import <Security/Securityh> 
  
@interface MyKeychain : NSObject 
  
+ (BOOL)save:(NSString*)service data:(id)data; 
+ (id)load:(NSString*)service; 
+ (void)delete:(NSString*)service; 
  
@end 
b）MyKeychainm
// 
// MyKeychainm 
// UUIDdemo 
// 
// Created by 555chy on 6/10/ 
// Copyright © 2016 555chy All rights reserved 
// 
  
#import "MyKeychainh" 
  
@implementation MyKeychain 
  
+ (NSMutableDictionary*) getKeychainQuery: (NSString*)service { 
  return [NSMutableDictionary dictionaryWithObjectsAndKeys: 
    (id)kSecClassGenericPassword, (id)kSecClass, 
    service, (id)kSecAttrService, 
    service, (id)kSecAttrAccount, 
    (id)kSecAttrAccessibleAfterFirstUnlock, (id)kSecAttrAccessible, 
   nil nil]; 
} 
    //service ：Key    data :value
+ (BOOL) save:(NSString*)service data:(id)data { 
  NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; 
  SecItemDelete((CFDictionaryRef)keychainQuery); 
  [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(id)kSecValueData]; 
  return SecItemAdd((CFDictionaryRef)keychainQuery, NULL) == noErr; 
} 
  //加载by KEY
+ (id) load:(NSString*)service { 
  id ret = NULL; 
  NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; 
  [keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData]; 
  [keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit]; 
  NSData *keyData = NULL; 
  if(SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef*)(void*)&keyData) == noErr) { 
    @try { 
      ret = [NSKeyedUnarchiver unarchiveObjectWithData:keyData]; 
    } 
    @catch (NSException *exception) { 
      NSLog(@"Unarchive of %@ failed: %@", service, exception); 
    } 
    @finally { 
    } 
  } 
  return ret; 
} 
  //删除by Key
+ (void) delete:(NSString*)service { 
  NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; 
  SecItemDelete((CFDictionaryRef)keychainQuery); 
} 
  
@end 