C# AES 256 加密：公钥和私钥我如何生成和使用它 .net
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AES 256 Encryption: public and private key how can I generate and use it .net
提问by Yasser-Farag
Regarding AES 256 Encryption:
关于 AES 256 加密：
- What is the public and private key?
- How can I generate these two keys?
- How can I use the public to encrypt the data?
- How can I use the private to decrypt the data?
- 什么是公钥和私钥？
- 如何生成这两个密钥？
- 如何使用公共加密数据？
- 如何使用私有来解密数据？
采纳答案by dcastro
In .Net, you can create your key pair like this:
在 .Net 中，您可以像这样创建密钥对：
public static Tuple<string, string> CreateKeyPair()
{
CspParameters cspParams = new CspParameters { ProviderType = 1 };
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(1024, cspParams);
string publicKey = Convert.ToBase64String(rsaProvider.ExportCspBlob(false));
string privateKey = Convert.ToBase64String(rsaProvider.ExportCspBlob(true));
return new Tuple<string, string>(privateKey, publicKey);
}
You can then use your public key to encrypt a message like so:
然后，您可以使用您的公钥来加密消息，如下所示：
public static byte[] Encrypt(string publicKey, string data)
{
CspParameters cspParams = new CspParameters { ProviderType = 1 };
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(cspParams);
rsaProvider.ImportCspBlob(Convert.FromBase64String(publicKey));
byte[] plainBytes = Encoding.UTF8.GetBytes(data);
byte[] encryptedBytes = rsaProvider.Encrypt(plainBytes, false);
return encryptedBytes;
}
And use your private key to decrypt like this:
并使用您的私钥像这样解密：
public static string Decrypt(string privateKey, byte[] encryptedBytes)
{
CspParameters cspParams = new CspParameters { ProviderType = 1 };
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(cspParams);
rsaProvider.ImportCspBlob(Convert.FromBase64String(privateKey));
byte[] plainBytes = rsaProvider.Decrypt(encryptedBytes, false);
string plainText = Encoding.UTF8.GetString(plainBytes, 0, plainBytes.Length);
return plainText;
}
回答by user2787670
I think you are mixing things up. AES is a symmetric cipher, thus only have one key both for encryption and decryption. Asymmetric ciphers like RSA have two keys. A public key for encryption and a private key for decryption.
我认为你把事情搞混了。AES 是一种对称密码，因此只有一个密钥用于加密和解密。像 RSA 这样的非对称密码有两个密钥。用于加密的公钥和用于解密的私钥。
And for reddit, you can indeed answer without being logged in.
