如何将.NET中的RSA公钥导入OpenSSL

using System;
using System.IO;
using System.Security.Cryptography;

public static void ExportPublicKeyToPem(RSA rsa, string fileName)
{
    byte[] publicKeyBytes = rsa.ExportRSAPublicKey();
    using (var sw = new StreamWriter(fileName))
    {
        sw.WriteLine("-----BEGIN PUBLIC KEY-----");
        sw.WriteLine(Convert.ToBase64String(publicKeyBytes, Base64FormattingOptions.InsertLineBreaks));
        sw.WriteLine("-----END PUBLIC KEY-----");
    }
}

openssl rsa -in public_key.pem -outform DER -out public_key.der

openssl rsa -inform DER -in public_key.der -outform PEM -out public_key_der_to_pem.pem