在C#中使用PFX文件加密字符串

using System;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using System.Text;

public class PfxEncryptionExample
{
    public static void Main()
    {
        string pfxFilePath = "path/to/your/file.pfx";
        string password = "your_password";
        string plainText = "Hello, World!";

        try
        {
            byte[] encryptedBytes = EncryptString(plainText, pfxFilePath, password);
            string encryptedText = Convert.ToBase64String(encryptedBytes);
            Console.WriteLine("Encrypted Text: " + encryptedText);
        }
        catch (Exception ex)
        {
            Console.WriteLine("Error: " + ex.Message);
        }
    }

    public static byte[] EncryptString(string plainText, string pfxFilePath, string password)
    {
        // Load the PFX file
        X509Certificate2 certificate = new X509Certificate2(pfxFilePath, password);

        // Get the public key from the certificate
        RSA rsa = certificate.GetRSAPublicKey();

        // Encrypt the plain text
        byte[] plainBytes = Encoding.UTF8.GetBytes(plainText);
        byte[] encryptedBytes = rsa.Encrypt(plainBytes, RSAEncryptionPadding.Pkcs1);

        return encryptedBytes;
    }
}