本文整理汇总了VB.NET中System.Security.Cryptography.RSAPKCS1KeyExchangeFormatter类的典型用法代码示例。如果您正苦于以下问题：VB.NET RSAPKCS1KeyExchangeFormatter类的具体用法？VB.NET RSAPKCS1KeyExchangeFormatter怎么用？VB.NET RSAPKCS1KeyExchangeFormatter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RSAPKCS1KeyExchangeFormatter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: Alice
' 导入命名空间
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
Class Alice
Public Shared Sub Main(ByVal args() As String)
Dim bob As New Bob()
Try
Dim rsaKey As New RSACryptoServiceProvider()
Try
' Get Bob's public key
rsaKey.ImportCspBlob(bob.key)
Dim encryptedSessionKey As Byte() = Nothing
Dim encryptedMessage As Byte() = Nothing
Dim iv As Byte() = Nothing
Send(rsaKey, "Secret message", iv, encryptedSessionKey, encryptedMessage)
bob.Receive(iv, encryptedSessionKey, encryptedMessage)
Finally
rsaKey.Dispose()
End Try
Finally
bob.Dispose()
End Try
End Sub
Private Shared Sub Send(ByVal key As RSA, ByVal secretMessage As String, ByRef iv() As Byte, ByRef encryptedSessionKey() As Byte, ByRef encryptedMessage() As Byte)
Dim aes = New AesCryptoServiceProvider()
Try
iv = aes.IV
' Encrypt the session key
Dim keyFormatter As New RSAPKCS1KeyExchangeFormatter(key)
encryptedSessionKey = keyFormatter.CreateKeyExchange(aes.Key, GetType(Aes))
' Encrypt the message
Dim ciphertext As New MemoryStream()
Try
Dim cs As New CryptoStream(ciphertext, aes.CreateEncryptor(), CryptoStreamMode.Write)
Try
Dim plaintextMessage As Byte() = Encoding.UTF8.GetBytes(secretMessage)
cs.Write(plaintextMessage, 0, plaintextMessage.Length)
cs.Close()
encryptedMessage = ciphertext.ToArray()
Finally
cs.Dispose()
End Try
Finally
ciphertext.Dispose()
End Try
Finally
aes.Dispose()
End Try
End Sub
End Class
Public Class Bob
Implements IDisposable
Public key() As Byte
Private rsaKey As New RSACryptoServiceProvider()
Public Sub New()
key = rsaKey.ExportCspBlob(False)
End Sub
Public Sub Receive(ByVal iv() As Byte, ByVal encryptedSessionKey() As Byte, ByVal encryptedMessage() As Byte)
Dim aes = New AesCryptoServiceProvider()
Try
aes.IV = iv
' Decrypt the session key
Dim keyDeformatter As New RSAPKCS1KeyExchangeDeformatter(rsaKey)
aes.Key = keyDeformatter.DecryptKeyExchange(encryptedSessionKey)
' Decrypt the message
Dim plaintext As New MemoryStream()
Try
Dim cs As New CryptoStream(plaintext, aes.CreateDecryptor(), CryptoStreamMode.Write)
Try
cs.Write(encryptedMessage, 0, encryptedMessage.Length)
cs.Close()
Dim message As String = Encoding.UTF8.GetString(plaintext.ToArray())
Console.WriteLine(message)
Finally
cs.Dispose()
End Try
Finally
plaintext.Dispose()
End Try
Finally
aes.Dispose()
End Try
End Sub
Public Overloads Sub Dispose() Implements IDisposable.Dispose
rsaKey.Dispose()
End Sub
End Class