![ECDiffieHellmanPublicKey]( "ECDiffieHellmanPublicKey")
本文介绍了ECDiffieHellmanCng从Byte []获取ECDiffieHellmanPublicKey的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在为我的服务器实现DiffieHellman密钥交换，但是在我收到转换为 Byte [] 的另一方公钥后，无法将其转换回 ECDiffieHellmanPublicKey 在 DeriveKeyMaterial中使用它
代码：
var socket = state.Socket;
var buffer = state.Buffer;
var alice = new ECDiffieHellmanCng
{
KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash，
HashAlgorithm = CngAlgorithm.Sha256
};
var exchangePacket = new ExchangeMessage（144，（int）PacketType.Exchange）
{
PublicKey = alice.PublicKey.ToByteArray（）
};
var len1 = socket.Send（exchangePacket，0，exchangePacket.Length，SocketFlags.None）;
if（0> = len1）{
return false;
}
var len2 = socket.Receive（buffer，buffer.Length，SocketFlags.None）;
if（len2< = 0）
return false;
Array.Resize（ref buffer，len2）;
var bob = new ExchangeMessage（buffer）; //如何获取ECDiffieHellmanPublicKey FROM MY BYTE []
byte [] aliceKey = alice.DeriveKeyMaterial（/ *无法从byte [] * /）获取ECDiffieHellmanPublicKey;
这是我如何工作 p>
DeriveKeyMaterial（ECDiffieHellmanCngPublicKey.FromByteArray（bob.PublicKey，new CngKeyBlobFormat（ECCPUBLICBLOB）））;
I am implementing DiffieHellman key exchange for my server but after i receive the other party public key which is converted to Byte[] i can't convert it back to ECDiffieHellmanPublicKey to use it in the DeriveKeyMaterial
Here is my code:
var socket = state.Socket;
var buffer = state.Buffer;
var alice = new ECDiffieHellmanCng
{
KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash,
HashAlgorithm = CngAlgorithm.Sha256
};
var exchangePacket = new ExchangeMessage(144, (int)PacketType.Exchange)
{
PublicKey = alice.PublicKey.ToByteArray()
};
var len1 = socket.Send(exchangePacket, 0, exchangePacket.Length, SocketFlags.None);
if (0 >= len1) {
return false;
}
var len2 = socket.Receive(buffer, buffer.Length, SocketFlags.None);
if (len2 <= 0)
return false;
Array.Resize(ref buffer, len2);
var bob = new ExchangeMessage(buffer); //HOW TO GET ECDiffieHellmanPublicKey FROM MY BYTE[]
byte[] aliceKey = alice.DeriveKeyMaterial(/*Can't get ECDiffieHellmanPublicKey from byte[]*/);
解决方案
Will this is how i got it to work
DeriveKeyMaterial(ECDiffieHellmanCngPublicKey.FromByteArray(bob.PublicKey, new CngKeyBlobFormat("ECCPUBLICBLOB")));
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