JSON Web サービスからの応答を読み取って復号化する VB.Net アプリを作成しています。私は秘密のパスフレーズを持っており、オンラインの復号化ツールなどを使用して問題なく暗号化された文字列を復号化できます。ただし、VB.Net でコードを記述する方法をまだ理解できていません。
以下は、JSON Web サービスから返される暗号化された文字列の例です。
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
鍵:
d40da16b8bc6b5e33ef3ae5f704edb2b
Rinjdael-128 暗号化であり、文字列を Base64 でデコードする必要があることはわかっています。VB.Netでそれを行うためのコードを理解できないようです。私はオンラインで多くの例を試しましたが、期待した結果が得られません。期待されるのは JSON であり、JSON 形式の文字列である必要があります。
これは、惨めに失敗した私の最新の試みです。
Dim rmt As RijndaelManaged = New RijndaelManaged()
Using rmt
rmt.KeySize = 128
rmt.Mode = CipherMode.CBC
rmt.Padding = PaddingMode.ISO10126
Dim ciphertext() As Byte = Convert.FromBase64String(json)
Dim plaintext() As Byte = rmt.CreateDecryptor(Convert.FromBase64String(key), System.Text.Encoding.ASCII.GetBytes(InitialVector)).TransformFinalBlock(ciphertext, 0, ciphertext.Length)
Dim decryptedtext As String = System.Text.Encoding.UTF8.GetString(plaintext)
Console.WriteLine(decryptedtext)
End Using
誰でも提供できる洞察や助けをいただければ幸いです。
ありがとう