本文整理汇总了VB.NET中System.Security.Cryptography.ECDiffieHellmanCng类的典型用法代码示例。如果您正苦于以下问题：VB.NET ECDiffieHellmanCng类的具体用法？VB.NET ECDiffieHellmanCng怎么用？VB.NET ECDiffieHellmanCng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ECDiffieHellmanCng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 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