iOS开发-微信签到机制Sign签名制作

来源：互联网发布：手机淘宝代购怎么做编辑：程序博客网时间：2024/06/17 23:56

微信功能的模块，简化一下完成了微信后台签到机制。剩下的就是网络请求了，这代码简单易懂，已经用最粗俗的码山来完成的了~~哈哈

原始签名Sign

①产生随机数

- (NSString *)acrRandow{    NSString * randow = [[NSStringalloc]init];    int xx =0;    for (int x =0 ; x <16; x++) {        xx = arc4random() %10;        NSString * aa = [NSStringstringWithFormat:@"%d",xx];        randow = [NSStringstringWithFormat:@"%@%@",randow,aa];    }    return randow;}

②Sign生成过程

- (NSString *)Sign{    //对比字段参数的大小然后排序    NSArray * array = [[NSArrayalloc]initWithObjects:@"参数1",@"参数2",@"参数3",@"参数4",nil];    NSStringCompareOptions comparisonOptions =NSCaseInsensitiveSearch|NSNumericSearch|    NSWidthInsensitiveSearch|NSForcedOrderingSearch;    //根据ASCII排序    NSComparator sort = ^(NSString *obj1,NSString *obj2){        NSRange range =NSMakeRange(0,obj1.length);        return [obj1compare:obj2options:comparisonOptionsrange:range];    };    NSArray *resultArray2 = [arraysortedArrayUsingComparator:sort];    NSLog(@"字符串数组排序结果%@",resultArray2);    //原始数据    NSMutableDictionary * dic = [[NSMutableDictionaryalloc]init];    //idvf    NSString *idfv = [[[UIDevicecurrentDevice]identifierForVendor]UUIDString];    [dic setObject:[NSStringstringWithFormat:@"%@",idfv]forKey:@"DeviceId"];    //授权号    [dic setObject:@"123"forKey:@"参数1"];    //POS终端版本号    [dic setObject:@"1.0.0"forKey:@"AppVersion"];    NSString * aa = [[NSStringalloc]init];    //随机字符串    aa = [selfacrRandow];    [dic setObject:aaforKey:@"Nonce"];    //拼接串   key1=value1    NSMutableArray * arraya = [[NSMutableArrayalloc]init];    NSString * Sign = [[NSStringalloc]init];    for (int i =0; i < resultArray2.count; i++) {        NSString * Signa = [NSStringstringWithFormat:@"%@=%@",[resultArray2objectAtIndex:i],[dicobjectForKey:[resultArray2objectAtIndex:i]]];        [arraya addObject:Signa];    }    // 原始 格式 sign = key1=value1&key2=value2&....    for (int i =0; i < arraya.count; i++) {        Sign = [NSStringstringWithFormat:@"%@&%@",Sign,[arrayaobjectAtIndex:i]];    }    Sign =  [Sign substringFromIndex:1];    NSLog(@"%@",Sign);    return Sign;    }    //把之前得到的Sign用  md5加密    - (NSString *)md5:(NSString *)str    {    constchar *concat_str = [strUTF8String];    unsignedchar result[CC_MD5_DIGEST_LENGTH];    CC_MD5(concat_str, (unsignedint)strlen(concat_str), result);    NSMutableString *hash = [NSMutableStringstring];    for (int i =0; i <16; i++){        [hash appendFormat:@"%02X", result[i]];    }    return [hashuppercaseString];}

通过以上步骤就获得了一个加密之后的Sign签名

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