本文整理匯總了VB.NET中System.Security.Cryptography.ECDiffieHellmanCng類的典型用法代碼示例。如果您正苦於以下問題：VB.NET ECDiffieHellmanCng類的具體用法？VB.NET ECDiffieHellmanCng怎麽用？VB.NET ECDiffieHellmanCng使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了ECDiffieHellmanCng類的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: Alice
' 導入命名空間
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
Class Alice
Public Shared alicePublicKey() As Byte
Public Shared Sub Main(ByVal args() As String)
Using alice As New ECDiffieHellmanCng()
alice.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash
alice.HashAlgorithm = CngAlgorithm.Sha256
alicePublicKey = alice.PublicKey.ToByteArray()
Dim bob As New Bob()
Dim k As CngKey = CngKey.Import(bob.bobPublicKey, CngKeyBlobFormat.EccPublicBlob)
Dim aliceKey As Byte() = alice.DeriveKeyMaterial(CngKey.Import(bob.bobPublicKey, CngKeyBlobFormat.EccPublicBlob))
Dim encryptedMessage As Byte() = Nothing
Dim iv As Byte() = Nothing
Send(aliceKey, "Secret message", encryptedMessage, iv)
bob.Receive(encryptedMessage, iv)
End Using
End Sub
Private Shared Sub Send(ByVal key() As Byte, ByVal secretMessage As String, ByRef encryptedMessage() As Byte, ByRef iv() As Byte)
Using aes As New AesCryptoServiceProvider()
aes.Key = key
iv = aes.IV
' Encrypt the message
Using ciphertext As New MemoryStream()
Using cs As New CryptoStream(ciphertext, aes.CreateEncryptor(), CryptoStreamMode.Write)
Dim plaintextMessage As Byte() = Encoding.UTF8.GetBytes(secretMessage)
cs.Write(plaintextMessage, 0, plaintextMessage.Length)
cs.Close()
encryptedMessage = ciphertext.ToArray()
End Using
End Using
End Using
End Sub
End Class
Public Class Bob
Public bobPublicKey() As Byte
Private bobKey() As Byte
Public Sub New()
Using bob As New ECDiffieHellmanCng()
bob.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash
bob.HashAlgorithm = CngAlgorithm.Sha256
bobPublicKey = bob.PublicKey.ToByteArray()
bobKey = bob.DeriveKeyMaterial(CngKey.Import(Alice.alicePublicKey, CngKeyBlobFormat.EccPublicBlob))
End Using
End Sub
Public Sub Receive(ByVal encryptedMessage() As Byte, ByVal iv() As Byte)
Using aes As New AesCryptoServiceProvider()
aes.Key = bobKey
aes.IV = iv
' Decrypt the message
Using plaintext As New MemoryStream()
Using cs As New CryptoStream(plaintext, aes.CreateDecryptor(), CryptoStreamMode.Write)
cs.Write(encryptedMessage, 0, encryptedMessage.Length)
cs.Close()
Dim message As String = Encoding.UTF8.GetString(plaintext.ToArray())
Console.WriteLine(message)
End Using
End Using
End Using
End Sub
End Class