rsa加密

public static class RSAHelper
{
    private static string privateKey;
    private static string publicKey;
    

    public static string GetPublicKey()
    {
        RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
        publicKey = Convert.ToBase64String(rsa.ExportCspBlob(false));
        privateKey = Convert.ToBase64String(rsa.ExportCspBlob(true));
        return publicKey;
    }

    public static string Encrypt(string text)
    {
        byte[] byteEncrypt;
        using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
        {
            rsa.ImportCspBlob(Convert.FromBase64String(publicKey));
            byte[] bytes = Encoding.UTF8.GetBytes(text);
            byteEncrypt = rsa.Encrypt(bytes, false);
        }

        return Convert.ToBase64String(byteEncrypt);
    }
    
    public static string Decrypt(string text)
    {
        byte[] byteDecrypt;
        using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
        {
            rsa.ImportCspBlob(Convert.FromBase64String(privateKey));
            byte[] bytes = Convert.FromBase64String(text);
            byteDecrypt = rsa.Decrypt(bytes, false);
        }

        return Encoding.UTF8.GetString(byteDecrypt);
    }
}