/// <summary>秘密鍵・復号化</summary>
private void button2_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txtSCSalt.Text))
{
// ソルト無し
if (this.rbnSCString.Checked)
{
// String
this.txtSCString.Text =
SymmetricCryptography.DecryptString(
this.txtSCCode.Text,
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue);
}
else
{
// Bytes
this.txtSCString.Text =
CustomEncode.ByteToString(
SymmetricCryptography.DecryptBytes(
CustomEncode.FormHexString(this.txtSCCode.Text),
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue),
CustomEncode.UTF_8);
}
}
else
{
// ソルト有り
if (this.nudSCStretching.Value == 0)
{
// ストレッチング無し
if (this.rbnSCString.Checked)
{
// String
this.txtSCString.Text
= SymmetricCryptography.DecryptString(
this.txtSCCode.Text,
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue,
CustomEncode.StringToByte(txtSCSalt.Text, CustomEncode.UTF_8));
}
else
{
// Bytes
this.txtSCString.Text =
CustomEncode.ByteToString(
SymmetricCryptography.DecryptBytes(
CustomEncode.FormHexString(this.txtSCCode.Text),
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue,
CustomEncode.StringToByte(txtSCSalt.Text, CustomEncode.UTF_8)),
CustomEncode.UTF_8);
}
}
else
{
// ストレッチング有り
if (this.rbnSCString.Checked)
{
// String
this.txtSCString.Text
= SymmetricCryptography.DecryptString(
this.txtSCCode.Text,
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue,
CustomEncode.StringToByte(txtSCSalt.Text, CustomEncode.UTF_8),
(int)this.nudSCStretching.Value);
}
else
{
// Bytes
this.txtSCString.Text =
CustomEncode.ByteToString(
SymmetricCryptography.DecryptBytes(
CustomEncode.FormHexString(this.txtSCCode.Text),
this.txtSCPassword.Text,
(EnumSymmetricAlgorithm)cbxSCPV.SelectedValue,
CustomEncode.StringToByte(txtSCSalt.Text, CustomEncode.UTF_8),
(int)this.nudSCStretching.Value),
CustomEncode.UTF_8);
}
}
}
}
