chiffrement et le déchiffrement pour un seul fichier txt en utilisant le code suivant fonctionne:Comment crypter et décrypter plusieurs fichiers texte et image dans les dossiers
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles SelectFile.Click
'Create a File Dialog Box to select the source file
Dim dlg As New OpenFileDialog
'If OK Button is Click then add file name with path to textBox1
If dlg.ShowDialog() = DialogResult.OK Then
TextBox1.Text = dlg.FileName
End If
End Sub
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Encrypt.Click
Dim outputFile As String
outputFile = "M:\Encryptions\Encrypted.txt"
Dim fsInput As New FileStream(TextBox1.Text, FileMode.Open, FileAccess.Read)
Dim fsEncrypted As New FileStream(outputFile, FileMode.Create, FileAccess.Write)
Dim sKey As String
sKey = "Helloabc"
Dim DES As New DESCryptoServiceProvider
DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey)
DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey)
Dim desencrypt As ICryptoTransform
desencrypt = DES.CreateEncryptor()
Dim cryptostream As New CryptoStream(fsEncrypted, desencrypt, CryptoStreamMode.Write)
Dim bytearrayinput(fsInput.Length) As Byte
fsInput.Read(bytearrayinput, 0, bytearrayinput.Length)
cryptostream.Write(bytearrayinput, 0, bytearrayinput.Length)
cryptostream.Close()
fsInput.Close()
fsEncrypted.Close()
TextBox2.Text = "M:\Encryptions\Encrypted.txt"
End Sub
Private Sub Button3_Click(sender As System.Object, e As System.EventArgs) Handles Decrypt.Click
Dim DES As New DESCryptoServiceProvider
Dim sKey As String
sKey = "Helloabc"
DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey)
DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey)
Dim fsread As New FileStream(TextBox2.Text, FileMode.Open, FileAccess.Read)
Dim desdecrypt As ICryptoTransform
desdecrypt = DES.CreateDecryptor()
Dim cryptostreamDecr As New CryptoStream(fsread, desdecrypt, CryptoStreamMode.Read)
Dim fsDecrypted As New StreamWriter("M:\Decryptions\Decrypted.txt")
fsDecrypted.Write(New StreamReader(cryptostreamDecr).ReadToEnd())
fsDecrypted.Flush()
fsDecrypted.Close()
TextBox3.Text = "M:\Decryptions\Decrypted.txt"
End Sub
Cependant lorsque vous essayez de crypter/décrypter des fichiers multiples, la sortie d'origine Le fichier de cryptage/décryptage ("Encrypted.txt") sera remplacé par la nouvelle sortie.
Comment créer une boucle pour créer plusieurs fichiers cryptés avec différents noms de fichiers?