本文整理汇总了VB.NET中System.Security.Cryptography.RijndaelManaged.RijndaelManaged构造函数的典型用法代码示例。如果您正苦于以下问题：VB.NET RijndaelManaged构造函数的具体用法？VB.NET RijndaelManaged怎么用？VB.NET RijndaelManaged使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.Security.Cryptography.RijndaelManaged的用法示例。
在下文中一共展示了RijndaelManaged构造函数的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: RijndaelExample
' 导入命名空间
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 RijndaelManaged
' class. This generates a new key and initialization
' vector (IV).
Using myRijndael As New RijndaelManaged()
myRijndael.GenerateKey()
myRijndael.GenerateIV()
' 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 RijndaelManaged object
' with the specified key and IV.
Using rijAlg As New RijndaelManaged()
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 RijndaelManaged object
' with the specified key and IV.
Using rijAlg As New RijndaelManaged
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