PrivateBoxiOS/创维盒子/code/Helpers/keyChain/RcGameWQKeyChain.m

//
//  RcGameWQKeyChain.m
//  Vclusters_game_SDK_iOS
//
//  Created by xd h on 2021/6/8.
//

#import "RcGameWQKeyChain.h"

@implementation RcGameWQKeyChain

static NSString * const KEY_IN_KEYCHAIN_RcGame = @"w10010DataPrivateX";
static NSString * const KEY_Identifier_RcGame = @"wuuidIdentifierPrivateX";

static NSString*identifierForVendor = nil;//设备标识符

+(void)saveIdentifier:(NSString *)iden
{
    NSMutableDictionary *usernamepasswordKVPairs = [NSMutableDictionary dictionary];
    [usernamepasswordKVPairs setObject:iden forKey:KEY_Identifier_RcGame];
    [RcGameWQKeyChain save:KEY_IN_KEYCHAIN_RcGame data:usernamepasswordKVPairs];
}

+(id)readIdentifier
{
    NSMutableDictionary *userIdentifierKVPair = (NSMutableDictionary *)[RcGameWQKeyChain load:KEY_IN_KEYCHAIN_RcGame];
    return [userIdentifierKVPair objectForKey:KEY_Identifier_RcGame];
}

+(void)deleteIdentifier
{
    [RcGameWQKeyChain delete:KEY_IN_KEYCHAIN_RcGame];
}


static NSMutableDictionary * queryDIC;
+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
    
    if (!queryDIC) {
           queryDIC =[NSMutableDictionary dictionaryWithObjectsAndKeys:
                      (__bridge_transfer id)kSecClassGenericPassword,(__bridge_transfer id)kSecClass,
                      service, (__bridge_transfer id)kSecAttrService,
                      service, (__bridge_transfer id)kSecAttrAccount,
                      (__bridge_transfer id)kSecAttrAccessibleAfterFirstUnlock,(__bridge_transfer id)kSecAttrAccessible,
                      nil];
       }
       return queryDIC;
}

+ (void)save:(NSString *)service data:(id)data {
    //Get search dictionary
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    //Delete old item before add new item
    SecItemDelete((__bridge_retained CFDictionaryRef)keychainQuery);
    //Add new object to search dictionary(Attention:the data format)
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge_transfer id)kSecValueData];
    //Add item to keychain with the search dictionary
    SecItemAdd((__bridge_retained CFDictionaryRef)keychainQuery, NULL);
}

+ (id)load:(NSString *)service {
    id ret = nil;
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    //Configure the search setting
    [keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge_transfer id)kSecReturnData];
    [keychainQuery setObject:(__bridge_transfer id)kSecMatchLimitOne forKey:(__bridge_transfer id)kSecMatchLimit];
    CFDataRef keyData = NULL;
    if (SecItemCopyMatching((__bridge_retained CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
        @try {
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge_transfer NSData *)keyData];
        } @catch (NSException *e) {
            NSLog(@"Unarchive of %@ failed: %@", service, e);
        } @finally {
        }
    }
    return ret;
}

+ (void)delete:(NSString *)service {
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    SecItemDelete((__bridge_retained CFDictionaryRef)keychainQuery);
}

/*******************************************************************************/

+ (NSString*)getOaidStringFun{
    if(!identifierForVendor)
    {//生成一个随机字符串
        NSString *randomUdidStr = [RcGameWQKeyChain readIdentifier];
        if(!randomUdidStr)//随机31个字符
        {
            randomUdidStr = [self randomString:31];
            [RcGameWQKeyChain saveIdentifier:randomUdidStr];
        }
        
        identifierForVendor = randomUdidStr;
    }

    return  identifierForVendor;
    
}

/**
 生成随机数字和大写字母
 @param number  需要的个数
 @return 生成的字符串
 */
+ (NSString *)randomString:(NSInteger)number {
    
    NSString *ramdom;
    NSMutableArray *array = [NSMutableArray array];
    for (int i = 1; i ; i ++) {
        int a = (arc4random() % 122);
        
        //48-57 （0-9）
        //65-90 （A-Z）
        if ((a >= 48 && a<=57) || (a >= 65 && a<=90)) {
            char c = (char)a;
            [array addObject:[NSString stringWithFormat:@"%c",c]];
            if (array.count == number) {
                break;
            }
        } else continue;
    }
    ramdom = [array componentsJoinedByString:@""];
    return ramdom;
    
}

@end