A voir également:
- Procedure de cryptage
- Le point d'entree de procedure est introuvable kernel32 dll ✓ - Forum Windows
- Comment enlever le cryptage d'un samsung ✓ - Forum Samsung
- Cle de cryptage tv panasonic ✓ - Forum WiFi
- Le point d'entrée de procédure est introuvable dans la bibliothèque de liens dynamiques ✓ - Forum Logiciels
- Cryptage en cours caméra - Forum Accessoires & objets connectés
3 réponses
L'utilitaire le plus connu est PGP (Pretty Good Privacy)
Voir à :
http://www.geocities.com/SiliconValley/Bay/9648/pgp651fr.htm
Voir à :
http://www.geocities.com/SiliconValley/Bay/9648/pgp651fr.htm
merci de ton aide mais je veux le code d'une fonction en asp (ou vbsript) permettant de recevoire une chaine de caractère et de donner comme resultat une autre chiane de caractère mais crypter
tu vois ce que je veux dire.?
mryassine
tu vois ce que je veux dire.?
mryassine
function de cryptage /decryptage RC4
Function RC4(ByRef pStrMessage, ByRef pStrKey)
Dim lBytAsciiAry(255)
Dim lBytKeyAry(255)
Dim lLngIndex
Dim lBytJump
Dim lBytTemp
Dim lBytY
Dim lLngT
Dim lLngX
Dim lLngKeyLength
' Validate data
If Len(pStrKey) = 0 Then Exit Function
If Len(pStrMessage) = 0 Then Exit Function
' transfer repeated key to array
lLngKeyLength = Len(pStrKey)
For lLngIndex = 0 To 255
lBytKeyAry(lLngIndex) = Asc(Mid(pStrKey, ((lLngIndex) Mod (lLngKeyLength)) + 1, 1))
Next
' Initialize S
For lLngIndex = 0 To 255
lBytAsciiAry(lLngIndex) = lLngIndex
Next
' Switch values of S arround based off of index and Key value
lBytJump = 0
For lLngIndex = 0 To 255
' Figure index to switch
lBytJump = (lBytJump + lBytAsciiAry(lLngIndex) + lBytKeyAry(lLngIndex)) Mod 256
' Do the switch
lBytTemp = lBytAsciiAry(lLngIndex)
lBytAsciiAry(lLngIndex) = lBytAsciiAry(lBytJump)
lBytAsciiAry(lBytJump) = lBytTemp
Next
lLngIndex = 0
lBytJump = 0
For lLngX = 1 To Len(pStrMessage)
lLngIndex = (lLngIndex + 1) Mod 256 ' wrap index
lBytJump = (lBytJump + lBytAsciiAry(lLngIndex)) Mod 256 ' wrap J+S()
' Add/Wrap those two
lLngT = (lBytAsciiAry(lLngIndex) + lBytAsciiAry(lBytJump)) Mod 256
' Switcheroo
lBytTemp = lBytAsciiAry(lLngIndex)
lBytAsciiAry(lLngIndex) = lBytAsciiAry(lBytJump)
lBytAsciiAry(lBytJump) = lBytTemp
lBytY = lBytAsciiAry(lLngT)
' Character Encryption ...
RC4 = RC4 & Chr(Asc(Mid(pStrMessage, lLngX, 1)) Xor lBytY)
Next
End Function
exemple de clé 128bits :32F 54F 4E7 7TR 78Z 87R 87Z R78 54G 1CX XDS QLI 5IZ ZE7 R77 8T9
@+
Function RC4(ByRef pStrMessage, ByRef pStrKey)
Dim lBytAsciiAry(255)
Dim lBytKeyAry(255)
Dim lLngIndex
Dim lBytJump
Dim lBytTemp
Dim lBytY
Dim lLngT
Dim lLngX
Dim lLngKeyLength
' Validate data
If Len(pStrKey) = 0 Then Exit Function
If Len(pStrMessage) = 0 Then Exit Function
' transfer repeated key to array
lLngKeyLength = Len(pStrKey)
For lLngIndex = 0 To 255
lBytKeyAry(lLngIndex) = Asc(Mid(pStrKey, ((lLngIndex) Mod (lLngKeyLength)) + 1, 1))
Next
' Initialize S
For lLngIndex = 0 To 255
lBytAsciiAry(lLngIndex) = lLngIndex
Next
' Switch values of S arround based off of index and Key value
lBytJump = 0
For lLngIndex = 0 To 255
' Figure index to switch
lBytJump = (lBytJump + lBytAsciiAry(lLngIndex) + lBytKeyAry(lLngIndex)) Mod 256
' Do the switch
lBytTemp = lBytAsciiAry(lLngIndex)
lBytAsciiAry(lLngIndex) = lBytAsciiAry(lBytJump)
lBytAsciiAry(lBytJump) = lBytTemp
Next
lLngIndex = 0
lBytJump = 0
For lLngX = 1 To Len(pStrMessage)
lLngIndex = (lLngIndex + 1) Mod 256 ' wrap index
lBytJump = (lBytJump + lBytAsciiAry(lLngIndex)) Mod 256 ' wrap J+S()
' Add/Wrap those two
lLngT = (lBytAsciiAry(lLngIndex) + lBytAsciiAry(lBytJump)) Mod 256
' Switcheroo
lBytTemp = lBytAsciiAry(lLngIndex)
lBytAsciiAry(lLngIndex) = lBytAsciiAry(lBytJump)
lBytAsciiAry(lBytJump) = lBytTemp
lBytY = lBytAsciiAry(lLngT)
' Character Encryption ...
RC4 = RC4 & Chr(Asc(Mid(pStrMessage, lLngX, 1)) Xor lBytY)
Next
End Function
exemple de clé 128bits :32F 54F 4E7 7TR 78Z 87R 87Z R78 54G 1CX XDS QLI 5IZ ZE7 R77 8T9
@+
