iOS验证判断身份证号的格式

来源:深圳沃龙软件开发公司     2017-06-16

项目中遇到了实名验证的需求,但没有和公安部的公民身份信息系统对接验证。严谨起见,就需要我们按照《公民身份号码》GB11643-1999,进行格式的验证。
18位身份证标准在国家质量技术监督局于1999年7月1日实施的GB11643-1999《公民身份号码》中做了明确的规定。GB11643-1999《公民身份号码》为GB11643-1989《社会保障号码》的修订版,其中指出将原标准名称“社会保障号码”更名为“公民身份号码”,另外GB11643-1999《公民身份号码》从实施之日起代替GB11643-1989


GB11643-1999

长度的判断

标准第5.1条 号码的结构 :公民身份号码是特征组合码,由十七位数字本体码(master number)和一位数字校验码(check number)组成。排序顺序从左至右依次为:六位数字地址码,八位数字出生日期码,三位数字顺序码和一位数字校验码。


号码的表示形式

- (BOOL)validateIdNumberLength:(NSString *)idNumber {//idNumber为传入的身份证号
    NSString *idNumberRegex = @"^(\\d{17})(\\d|[xX])$";//正则判断idNumber是17位数字加1位数字校验码或大小写xX
    NSPredicate *idNumberPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",idNumberRegex];    
    if(![idNumberPredicate evaluateWithObject:idNumber]){        
        NSLog(@"你输入的身份证长度或格式错误");        
        return NO;
    } else {        
        return YES;
    }
}

地址码的判断

地址码:表示编码对象常住户口所在县(市、旗、区)的行政区划代码,按GB/T2260的规定执行。
大陆居民身份证号码中的地址码的数字编码规则为:
第一、二位表示省(自治区、直辖市、特别行政区)。
第三、四位表示市(地级市、自治州、盟及国家直辖市所属市辖区和县的汇总码)。其中,01-20,51-70表示省直辖市;21-50表示地区(自治州、盟)。
第五、六位表示县(市辖区、县级市、旗)。01-18表示市辖区或地区(自治州、盟)辖县级市;21-80表示县(旗);81-99表示省直辖县级市。 

- (BOOL)validateIdNumberProvince:(NSString *)idNumber {//只判断了地址码的前两位省份 idNumber为传入的身份证号
    NSDictionary *aProvince = @{@"11": @"北京", @"12": @"天津", @"13": @"河北", @"14": @"山西", @"15": @"内蒙古", @"21": @"辽宁", @"22": @"吉林", @"23": @"黑龙江", @"31": @"上海", @"32": @"江苏", @"33": @"浙江", @"34": @"安徽", @"35": @"福建", @"36": @"江西", @"37": @"山东", @"41": @"河南", @"42": @"湖北", @"43": @"湖南", @"44": @"广东", @"45": @"广西", @"46": @"海南", @"50": @"重庆", @"51": @"四川", @"52": @"贵州",  @"53": @"云南", @"54": @"西藏", @"61": @"陕西", @"62": @"甘肃", @"63": @"青海", @"64": @"宁夏", @"65": @"新疆", @"71": @"台湾", @"81": @"香港", @"82": @"澳门", @"91": @"国外"};    
    NSString *key = [idNumber substringToIndex:2];    
    NSString *value = [aProvince objectForKey:key];    
    if(!value){        
        NSLog(@"你的身份证地区非法");        
        return NO;
    } else {       
        return YES;
    }
}

出生日期码的判断

出生日期码:表示编码对象出生的年、月、日,按GB/T7408的规定执行,年、月、日分别用4位、2位、2位数字表示,之间不用分隔符。

- (BOOL)validateIdNumberDateOfBirth:(NSString *)idNumber {//idNumber为传入的身份证号
    NSString *birth = [idNumber substringWithRange:NSMakeRange(6, 8)];   
    NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init];//创建一个日期格式化器
    dateFormatter.dateFormat=@"yyyyMMdd";   
    NSDate *date = [dateFormatter dateFromString:birth];    
    if(!date){        
        NSLog(@"身份证上的出生日期非法");        
        return NO;
    } else {        
        return YES;
    }
}

校验码的判断

校验码:附加在本体码后边 ,用来验证本体码的录入或转录过程准确性的号码 。每一个本体码只有一个校验码 ,校验码通过规定的数学关系式得到。


校验公式

- (BOOL)validateIdNumberCheckNumber:(NSString *)idNumber {//idNumber为传入的身份证号
    NSArray *idCardWi = @[@"7", @"9", @"10", @"5", @"8", @"4", @"2", @"1", @"6", @"3", @"7", @"9", @"10", @"5", @"8", @"4", @"2"]; //将前17位加权因子保存在数组里
    NSArray *idCardA1 = @[@"1", @"0", @"10", @"9", @"8", @"7", @"6", @"5", @"4", @"3", @"2"]; //这是除以11后,可能产生的11位余数、验证码,也保存成数组
    int idCardWiSum = 0; //用来保存前17位各自乖以加权因子后的总和
    for (int i = 0; i < 17; i++) {
        idCardWiSum += [[idNumber substringWithRange:NSMakeRange(i,1)] intValue]*[idCardWi[i] intValue];
    }    
    int idCardMod = idCardWiSum%11;//计算出校验码所在数组的位置
    NSString *idCardLast = [idNumber substringWithRange:NSMakeRange(17,1)];//得到最后一位身份证号码
    //如果等于2,则说明校验码是10,身份证号码最后一位应该是X
    if (idCardMod == 2) {        
        if ([idCardLast isEqualToString:@"X"] || [idCardLast isEqualToString:@"x"]) {            
            return YES;
        } else {            
            NSLog(@"你输入的身份证号非法");            
            return NO;
        }
    } else {        //用计算出的验证码与最后一位身份证号码匹配,如果一致,说明通过,否则是无效的身份证号码
        if ([idCardLast intValue] == [idCardA1[idCardMod] intValue]) {            
            return YES;
        } else {            
            NSLog(@"你输入的身份证号非法");            
            return NO;
        }
    }
}

最后关于顺序码

顺序码:表示在同一地址码所标识 的区域范围内,对同年、同月、同日出生的人编定的顺序号 ,顺序码的奇数分配给男性 ,偶数分配给女性 。如:007的就是个男生 而且和他同年月日生的男生至少有两个 他们的后四位是001 和 003 。


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Phil | 2024-12-14

???????? ?????? ? ?????? ??????-???? ????????? ???????? ??????-???? – ??? ?????????? ?????, ?????? ???????????? ??? ?? ??? ??????. ????? ????? ??????? ??????? ? ?????? ???????? ??????. ?????? ???????????? ?????????? ???????? ???, ??? ?????? ????????? ??????????? ?

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