vb
所属分类:Windows编程
开发工具:Visual Basic
文件大小:4KB
下载次数:186
上传日期:2009-03-07 22:15:36
上 传 者:
dcoco
说明: 自动验证识别码
用VB编写
需要的可以拿去
(Automatic verification of ID with VB can be taken to prepare the necessary)
文件列表:
新建文件夹\1.bmp (4078, 2004-08-20)
新建文件夹\ValidPic.vbs (3972, 2009-03-07)
新建文件夹 (0, 2009-03-07)
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netdust
http://www.oyj.cn
2005-8-20
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针对3721的图片认证码的识别
3721网址:http://customer.3721.com/newapply/newwhois.htm
现在很多网站在身份登录、文章发表等地方都加上了图片认证码用来防止恶意程序的攻击,取得了很大的效果,我也先后用过3个版本的图片认证码程序,最新的版本可以随机产生杂点,并且可以进行颜色设置,本以为这样便绝对安全了,可是突然发现,目前的很多认证码程序并不安全,仔细研究一下就会发现不少漏洞,所以试着拿3721的来做一下,程序是用vbs写的,双击该vbs文件即可运行。
每个数字的尺寸
宽度:8px
高度:10px
第一个字的左上角是22行11列(偏移量3188)
第一个字的左下角是13行11列(偏移量2288)
数字对应表:
0:00011000001111000110011011000011110000111100001111000011011001100011110000011000
1:00011000001110000111100000011000000110000001100000011000000110000001100001111110
2:00111100011001101100001100000011000001100000110000011000001100000110000011111111
3:01111100110001100000001100000110000111000000011000000011000000111100011001111100
4:00000110000011100001111000110110011001101100011011111111000001100000011000000110
5:11111110110000001100000011011100111001100000001100000011110000110110011000111100
6:00111100011001101100001011000000110111001110011011000011110000110110011000111100
7:11111111000000110000001100000110000011000001100000110000011000001100000011000000
8:00111100011001101100001101100110001111000110011011000011110000110110011000111100
9:00111100011001101100001111000011011001110011101100000011010000110110011000111100
说明:0代表底色,1代表前景色,把某个数字对应的列表按照每8个一行就明白了
如0:
00011000001111000110011011000011110000111100001111000011011001100011110000011000
-->
00011000
00111100
01100110
11000011
11000011
11000011
11000011
01100110
00111100
00011000
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