本文整理匯總了VB.NET中System.Security.Cryptography.Rijndael.Rijndael構造函數的典型用法代碼示例。如果您正苦於以下問題：VB.NET Rijndael構造函數的具體用法？VB.NET Rijndael怎麽用？VB.NET Rijndael使用的例子？那麽, 這裏精選的構造函數代碼示例或許可以為您提供幫助。您也可以進一步了解該構造函數所在類System.Security.Cryptography.Rijndael的用法示例。
在下文中一共展示了Rijndael構造函數的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: RijndaelExample
' 導入命名空間
Imports System.IO
Imports System.Security.Cryptography
Class RijndaelExample
Public Shared Sub Main()
Try
Dim original As String = "Here is some data to encrypt!"
' Create a new instance of the Rijndael
' class. This generates a new key and initialization
' vector (IV).
Using myRijndael = Rijndael.Create()
' Encrypt the string to an array of bytes.
Dim encrypted As Byte() = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV)
' Decrypt the bytes to a string.
Dim roundtrip As String = DecryptStringFromBytes(encrypted, myRijndael.Key, myRijndael.IV)
'Display the original data and the decrypted data.
Console.WriteLine("Original: {0}", original)
Console.WriteLine("Round Trip: {0}", roundtrip)
End Using
Catch e As Exception
Console.WriteLine("Error: {0}", e.Message)
End Try
End Sub
Shared Function EncryptStringToBytes(ByVal plainText As String, ByVal Key() As Byte, ByVal IV() As Byte) As Byte()
' Check arguments.
If plainText Is Nothing OrElse plainText.Length <= 0 Then
Throw New ArgumentNullException("plainText")
End If
If Key Is Nothing OrElse Key.Length <= 0 Then
Throw New ArgumentNullException("Key")
End If
If IV Is Nothing OrElse IV.Length <= 0 Then
Throw New ArgumentNullException("IV")
End If
Dim encrypted() As Byte
' Create an Rijndael object
' with the specified key and IV.
Using rijAlg = Rijndael.Create()
rijAlg.Key = Key
rijAlg.IV = IV
' Create an encryptor to perform the stream transform.
Dim encryptor As ICryptoTransform = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV)
' Create the streams used for encryption.
Using msEncrypt As New MemoryStream()
Using csEncrypt As New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
Using swEncrypt As New StreamWriter(csEncrypt)
'Write all data to the stream.
swEncrypt.Write(plainText)
End Using
encrypted = msEncrypt.ToArray()
End Using
End Using
End Using
' Return the encrypted bytes from the memory stream.
Return encrypted
End Function 'EncryptStringToBytes
Shared Function DecryptStringFromBytes(ByVal cipherText() As Byte, ByVal Key() As Byte, ByVal IV() As Byte) As String
' Check arguments.
If cipherText Is Nothing OrElse cipherText.Length <= 0 Then
Throw New ArgumentNullException("cipherText")
End If
If Key Is Nothing OrElse Key.Length <= 0 Then
Throw New ArgumentNullException("Key")
End If
If IV Is Nothing OrElse IV.Length <= 0 Then
Throw New ArgumentNullException("IV")
End If
' Declare the string used to hold
' the decrypted text.
Dim plaintext As String = Nothing
' Create an Rijndael object
' with the specified key and IV.
Using rijAlg = Rijndael.Create()
rijAlg.Key = Key
rijAlg.IV = IV
' Create a decryptor to perform the stream transform.
Dim decryptor As ICryptoTransform = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV)
' Create the streams used for decryption.
Using msDecrypt As New MemoryStream(cipherText)
Using csDecrypt As New CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)
Using srDecrypt As New StreamReader(csDecrypt)
' Read the decrypted bytes from the decrypting stream
' and place them in a string.
plaintext = srDecrypt.ReadToEnd()
End Using
End Using
End Using
End Using
Return plaintext
End Function 'DecryptStringFromBytes
End Class