IOS开发 密码强度判断

转自：http://blog.csdn.net/lmf208/article/details/7750632

#pragma mark - 判断密码强度函数

//判断是否包含

+ (BOOL) judgeRange:(NSArray*) _termArray Password:(NSString*) _password

{

  NSRange range;

   BOOLresult =NO;

   for(inti=0; i<[_termArray count]; i++)

    {

        range = [_password rangeOfString:[_termArray objectAtIndex:i]];

       if(range.location != NSNotFound)

        {

            result =YES;

        }

    }

   returnresult;

}

//条件

+ (NSString*) judgePasswordStrength:(NSString*) _password

{

    NSMutableArray* resultArray = [[NSMutableArray alloc] init];

   

    NSArray* termArray1 = [[NSArray alloc] initWithObjects:@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"h", @"i", @"j", @"k", @"l", @"m", @"n", @"o", @"p", @"q", @"r", @"s", @"t", @"u", @"v", @"w", @"x", @"y", @"z", nil];

    NSArray* termArray2 = [[NSArray alloc] initWithObjects:@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"0", nil];

    NSArray* termArray3 = [[NSArray alloc] initWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R", @"S", @"T", @"U", @"V", @"W", @"X", @"Y", @"Z", nil];

    NSArray* termArray4 = [[NSArray alloc] initWithObjects:@"~",@"`",@"@",@"#",@"$",@"%",@"^",@"&",@"*",@"(",@")",@"-",@"_",@"+",@"=",@"{",@"}",@"[",@"]",@"|",@":",@";",@"“",@"'",@"‘",@"<",@",",@".",@">",@"?",@"/",@"、", nil];

   

    NSString* result1 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray1 Password:_password]];

    NSString* result2 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray2 Password:_password]];

    NSString* result3 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray3 Password:_password]];

    NSString* result4 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray4 Password:_password]];

   

    [resultArray addObject:[NSString stringWithFormat:@"%@",result1]];

    [resultArray addObject:[NSString stringWithFormat:@"%@",result2]];

    [resultArray addObject:[NSString stringWithFormat:@"%@",result3]];

    [resultArray addObject:[NSString stringWithFormat:@"%@",result4]];

   

    int intResult=0;

    for (int j=0; j<[resultArray count]; j++)

    {

       

        if ([[resultArray objectAtIndex:j] isEqualToString:@"1"])

        {

            intResult++;

        }

    }

    NSString* resultString = [[NSString alloc] init];

    if (intResult <2)

    {

        resultString = @"密码强度低，建议修改";

    }

    elseif (intResult == 2&&[_password length]>=6)

    {

        resultString = @"密码强度一般";

    }

    if (intResult > 2&&[_password length]>=6)

    {

        resultString = @"密码强度高";

    }

   

    return resultString;

}

声明：包含大写/小写/数字/特殊字符

两种以下密码强度低

两种密码强度中

大于两种密码强度高