本文整理汇总了VB.NET中System.Security.Cryptography.RC2CryptoServiceProvider类的典型用法代码示例。如果您正苦于以下问题：VB.NET RC2CryptoServiceProvider类的具体用法？VB.NET RC2CryptoServiceProvider怎么用？VB.NET RC2CryptoServiceProvider使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了RC2CryptoServiceProvider类的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: Crypto
' 导入命名空间
Imports System.IO
Imports System.Text
Imports System.Security.Cryptography
Module Crypto
Sub Main()
' Create a new instance of the RC2CryptoServiceProvider class
' and automatically generate a Key and IV.
Dim rc2CSP As New RC2CryptoServiceProvider()
Console.WriteLine("Effective key size is {0} bits.", rc2CSP.EffectiveKeySize)
' Get the key and IV.
Dim key As Byte() = rc2CSP.Key
Dim IV As Byte() = rc2CSP.IV
' Get an encryptor.
Dim encryptor As ICryptoTransform = rc2CSP.CreateEncryptor(key, IV)
' Encrypt the data as an array of encrypted bytes in memory.
Dim msEncrypt As New MemoryStream()
Dim csEncrypt As New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
' Convert the data to a byte array.
Dim original As String = "Here is some data to encrypt."
Dim toEncrypt As Byte() = Encoding.ASCII.GetBytes(original)
' Write all data to the crypto stream and flush it.
csEncrypt.Write(toEncrypt, 0, toEncrypt.Length)
csEncrypt.FlushFinalBlock()
' Get the encrypted array of bytes.
Dim encrypted As Byte() = msEncrypt.ToArray()
'''''''''''''''''''''''''''''''''''''''''''''''''''''''
' This is where the data could be transmitted or saved.
'''''''''''''''''''''''''''''''''''''''''''''''''''''''
'Get a decryptor that uses the same key and IV as the encryptor.
Dim decryptor As ICryptoTransform = rc2CSP.CreateDecryptor(key, IV)
' Now decrypt the previously encrypted message using the decryptor
' obtained in the above step.
Dim msDecrypt As New MemoryStream(encrypted)
Dim csDecrypt As New CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)
' Read the decrypted bytes from the decrypting stream
' and place them in a StringBuilder class.
Dim roundtrip As New StringBuilder()
Dim b As Integer = 0
Do
b = csDecrypt.ReadByte()
If b <> -1 Then
roundtrip.Append(ChrW(b))
End If
Loop While b <> -1
' Display the original data and the decrypted data.
Console.WriteLine("Original: {0}", original)
Console.WriteLine("Round Trip: {0}", roundtrip)
Console.ReadLine()
End Sub
End Module