公钥如何用于在.NET程序集中解密？

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

public static class RSAHelper
{
    public static byte[] Decrypt(byte[] encryptedData, X509Certificate2 certificate)
    {
        using (RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)certificate.PublicKey.Key)
        {
            return rsa.Decrypt(encryptedData, true);
        }
    }
}