asp的验证码

答案：
asp的验证码
Sub Com_CreateValidCode(pSN)
    Response.Expires = -9999 
    Response.AddHeader "Pragma","no-cache"  
    Response.AddHeader "cache-ctrol","no-cache" 
    Response.ContentType = "Image/BMP"  
    Randomize  
    Dim i, ii, iii   
    Const cOdds = 8            '杂点出现的机率   
    Const cAmount = 10        '文字数量    
    Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"  
    '颜色的数据(字符，背景)  
    Dim vColorData(1)   
    vColorData(0) = ChrB(0) & ChrB(0) & ChrB(255)        ' 蓝0，绿0，红0（黑色） 
    vColorData(1) = ChrB(235) & ChrB(235) & ChrB(235)    ' 蓝250，绿236，红211（浅蓝色）  
    '随机产生字符    
    Dim vCode(4), vCodes  
    For i = 0 To 3     
        vCode(i) = Int(Rnd * cAmount)   
        vCodes = vCodes & Mid(cCode, vCode(i) + 1, 1)   
    Next   
    Session(pSN) = vCodes '记录入Session  
    ' 字符的数据    
    Dim vNumberData(35)    
    vNumberData(0) = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111"    
    vNumberData(1) = "1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111"  
    vNumberData(2) = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011"  
    vNumberData(3) = "1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111"   
    vNumberData(4) = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011"   
    vNumberData(5) = "1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111"  
    vNumberData(6) = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111"   
    vNumberData(7) = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111"  
    vNumberData(8) = "1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111"  
    vNumberData(9) = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111"   
    vNumberData(10) = "1111011111111101111111101011111110101111111010111111101011111100000111110111011111011101111000100011"  
    vNumberData(11) = "1000000111110111101111011110111101110111110000111111011101111101111011110111101111011110111000000111"   
    vNumberData(12) = "1110000011110111101110111110111011111111101111111110111111111011111111101111101111011101111110001111"  
    vNumberData(13) = "1000001111110111011111011110111101111011110111101111011110111101111011110111101111011101111000001111"  
    vNumberData(14) = "1000000111110111101111011011111101101111110000111111011011111101101111110111111111011110111000000111"  
    vNumberData(15) = "1000000111110111101111011011111101101111110000111111011011111101101111110111111111011111111000111111"  
    vNumberData(16) = "1110000111110111011110111101111011111111101111111110111111111011100011101111011111011101111110001111" 
    vNumberData(17) = "1000100011110111011111011101111101110111110000011111011101111101110111110111011111011101111000100011" 
    vNumberData(18) = "1100000111111101111111110111111111011111111101111111110111111111011111111101111111110111111100000111"  
    vNumberData(19) = "1110000011111110111111111011111111101111111110111111111011111111101111111110111110111011111000011111"  
    vNumberData(20) = "1000100011110111011111011011111101011111110001111111010111111101101111110110111111011101111000100011"  
    vNumberData(21) = "1000111111110111111111011111111101111111110111111111011111111101111111110111111111011110111000000011"  
    vNumberData(22) = "1000100011110010011111001001111100100111110101011111010101111101010111110101011111010101111001010011"  
    vNumberData(23) = "1000100011110011011111001101111101010111110101011111010101111101100111110110011111011001111000110111" 
    vNumberData(24) = "1110001111110111011110111110111011111011101111101110111110111011111011101111101111011101111110001111"   
    vNumberData(25) = "1000000111110111101111011110111101111011110000011111011111111101111111110111111111011111111000111111" 
    vNumberData(26) = "1110001111110111011110111110111011111011101111101110111110111011111011101001101111011001111110001011"  
    vNumberData(27) = "1000001111110111011111011101111101110111110000111111010111111101101111110110111111011101111000110011"  
    vNumberData(28) = "1110000011110111101111011110111101111111111001111111111001111111111011110111101111011110111100000111" 
    vNumberData(29) = "1000000011101101101111110111111111011111111101111111110111111111011111111101111111110111111110001111"   
    vNumberData(30) = "1000100011110111011111011101111101110111110111011111011101111101110111110111011111011101111110001111"  
    vNumberData(31) = "1000100011110111011111011101111101110111111010111111101011111110101111111010111111110111111111011111"  
    vNumberData(32) = "1001010011110101011111010101111101010111110101011111001001111110101111111010111111101011111110101111"  
    vNumberData(33) = "1000100011110111011111101011111110101111111101111111110111111110101111111010111111011101111000100011"  
    vNumberData(34) = "1000100011110111011111011101111110101111111010111111110111111111011111111101111111110111111110001111"  
    vNumberData(35) = "1100000011110111011111111101111111101111111110111111110111111111011111111011111111101110111100000011"   
    ' 输出图像文件头   
    Response.BinaryWrite ChrB(66) & ChrB(77) & ChrB(230) & ChrB(4) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _ 
        ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & _
        ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(10) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(1) & ChrB(0)
    ' 输出图像信息头   
    Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(176) & ChrB(4) & _       
        ChrB(0) &

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