[Cryptographie] Questions sur chiffrement XOR

Citation:

Envoyé par Gorzyne

salut il manque juste une petite fonction ExpoModGN

Code:

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'---------------------------------------------------------------------------------------
Public Function ExpoModGN(ByVal GN As String, ByVal Expo As String, ByVal Modulo As String) As String
'---------------------------------------------------------------------------------------
' EXPONENTIATION MODULAIRE RAPIDE : GN^Expo MOD Modulo.
'---------------------------------------------------------------------------------------
Dim x As String
x = 1
While Expo > 0
    If Right(Expo, 1) Mod 2 = 1 Then x = ModGN(PGN(GN, x), Modulo)
    GN = ModGN(PGN(GN, GN), Modulo)
    Expo = IntGN(PGN(Expo, "0.5"))
Wend
ExpoModGN = x
End Function