Appelez Com_CreatValidCode("ValidCode")
sous Com_CreatValidCode(pSN)
'Désactiver la mise en cache
Réponse.Expire = -9999
Response.AddHeader "Pragma", "pas de cache"
Response.AddHeader "cache-ctrol", "no-cache"
Response.ContentType = "Image/BMP"
Randomize
Dim i, ii, iii
Const cOdds = 8 ' La probabilité d'apparition du bruit
Const cAmount = 36 'Quantité du texte
Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
'Données de couleur (caractères, arrière-plan)
Faible vColorData(1)
vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) ' Bleu 0, Vert 0, Rouge 0 (noir)
vColorData(1) = ChrB(250) & ChrB(236) & ChrB(211) ' Bleu 250, vert 236, rouge 211 (bleu clair)
' Générer des caractères de manière aléatoire
Dim vCode(4), vCodes
Pour i = 0 à 3
vCode(i) = Int(Rnd * cMontant)
vCodes = vCodes & Milieu(cCode, vCode(i) + 1, 1)
suivante
(pSN) = caractères vCodes 'Enregistrer
les données dans la session'
Dim vNumberData(35)
vNumberData(0) = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111"
vNumberData(1) = "111101111111000111111111011111111101111111110111111111011111111101111111110111111110111111100000111"
vNumberData(2) = "1110000111110111101111011110111111111011111111011111111011111111011111111011110111100000011"
vNumberData(3) = "111000011111011110111101111011111110111111100111111111101111111111011110111101111011110111110000111"
vNumberData(4) = "11111011111111101111111100111111101011111101101111110110111111000000011111110111111111011111111000011"
vNumberData(5) = "11000000111101111111111011111111101000111110011101111111110111111111011110111101111011110111110000111"
vNumberData(6) = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111"
vNumberData(7) = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111"
vNumberData(8) = "111000011111011110111101111011110111101111100001111101101111101111011110111101111011110111110000111"
vNumberData(9) = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111"
vNumberData(10) = "111101111111110111111110101111111010111111101011111101011111100000111110111011111011101111000100011"
vNumberData(11) = "100000011111011110111101111011110111011111000011111011101111101111011110111101111011110111000000111"
vNumberData(12) = "111000001111011110111011111011101111111101111111110111111111011111111101111101111011101111110001111"
vNumberData(13) = "1000001111110111011111011110111101111011110111101111011110111101111011110111101111011101111000001111"
vNumberData(14) = "10000001111101111011110110111111011011111100001111101101111101101111110111111111011110111000000111"
vNumberData(15) = "100000011111011110111101101111110110111111000011111101101111101101111110111111111011111111000111111"
vNumberData(16) = "1110000111110111011110111101111011111111101111111110111111111011100011101111011111011101111110001111"
vNumberData(17) = "100010001111011101111101110111110111011111000001111011101111101110111110111011111011101111000100011"
vNumberData(18) = "110000011111110111111111011111111101111111110111111111011111111101111111110111111111011111100000111"
vNumberData(19) = "111000001111111011111111101111111101111111110111111111011111111101111111110111110111011111000011111"
vNumberData(20) = "100010001111011101111101101111110101111111000111111101011111101101111110110111111011101111000100011"
vNumberData(21) = "1000111111110111111111011111111101111111110111111111011111111101111111110111111111011110111000000011"
vNumberData(22) = "1000100011110010011111001001111100100111110101011111010101111101010111110101011111010101111001010011"
vNumberData(23) = "1000100011110011011111001101111101010111110101011111010101111101100111110110011111011001111000110111"
vNumberData(24) = "1110001111110111011110111110111011111011101111101110111110111011111011101111101111011101111110001111"
vNumberData(25) = "100000011111011110111101111011110111101111000001111011111111101111111110111111111011111111000111111"
vNumberData(26) = "1110001111110111011110111110111011111011101111101110111110111011111011101001101111011001111110001011"
vNumberData(27) = "100000111111011101111101110111110111011111000011111101011111101101111110110111111011101111000110011"
vNumberData(28) = "1110000011110111101111011110111101111111111001111111111001111111111011110111101111011110111100000111"
vNumberData(29) = "1000000011101101101111110111111111011111111101111111110111111111011111111101111111110111111110001111"
vNumberData(30) = "1000100011110111011111011101111101110111110111011111011101111101110111110111011111011101111110001111"
vNumberData(31) = "1000100011110111011111011101111101110111111010111111101011111110101111111010111111110111111111011111"
vNumberData(32) = "1001010011110101011111010101111101010111110101011111001001111110101111111010111111101011111110101111"
vNumberData(33) = "1000100011110111011111101011111110101111111101111111110111111110101111111010111111011101111000100011"
vNumberData(34) = "1000100011110111011111011101111110101111111010111111110111111111011111111101111111110111111110001111"
vNumberData(35) = "110000001111011101111111110111111101111111110111111110111111111011111111101110111100000011"
' En-tête du fichier image de sortie
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)
'En-tête des informations sur l'image de sortie
Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(176) & ChrB(4) &_
ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) &_
ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_
ChrB(0) & ChrB(0)
Pour i = 9 à 0 Étape -1 'Parcourir toutes les lignes
Pour ii = 0 À 3 ' Parcourir tous les mots
Pour iii = 1 à 10 ' Parcourir tous les pixels
' Sortie des données d'image ligne par ligne, mot par mot et pixel par pixel
Si Rnd * 99 + 1 < cOdds Alors ' Générer du bruit de manière aléatoire
Réponse.BinaryWrite vColorData(0)
Autre
Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1))
Fin si
Suivant
Suivant
Suivant
Fin du sous-marin