尝试使用.net中的bouncycastle使用公钥(而不是私有密钥)解密字符串

using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.OpenSsl;
using Org.BouncyCastle.Security;

public static string DecryptString(string encryptedString, string publicKeyPath)
{
    // 读取公钥文件
    PemReader pemReader = new PemReader(new StreamReader(publicKeyPath));
    AsymmetricKeyParameter publicKey = (AsymmetricKeyParameter)pemReader.ReadObject();

    // 创建解密器
    IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
    cipher.Init(false, publicKey);

    // 解密字符串
    byte[] encryptedBytes = Convert.FromBase64String(encryptedString);
    byte[] decryptedBytes = cipher.DoFinal(encryptedBytes);

    // 返回解密后的字符串
    return Encoding.UTF8.GetString(decryptedBytes);
}

string encryptedString = "密文字符串";
string publicKeyPath = "公钥文件路径";
string decryptedString = DecryptString(encryptedString, publicKeyPath);