/// <summary>
/// X509CerToProvider
/// X.509公開鍵(*.cer)からRsaProviderへ変換
/// </summary>
/// <param name="certificateFilePath"></param>
/// <returns>RSACryptoServiceProvider</returns>
public static RSACryptoServiceProvider X509CerToProvider(string certificateFilePath)
{
DigitalSignX509 dsX509 = new DigitalSignX509(
certificateFilePath, "", "SHA256", X509KeyStorageFlags.DefaultKeySet);
if (dsX509.X509Certificate.PrivateKey == null)
{
AsymmetricAlgorithm aa = dsX509.X509Certificate.PublicKey.Key;
if (aa is RSACryptoServiceProvider)
{
return((RSACryptoServiceProvider)aa);
}
else
{
}
}
else
{
}
return(null);
}
/// <summary>Constructor</summary>
/// <param name="certificateFilePath">DigitalSignX509に渡すcertificateFilePathパラメタ</param>
/// <param name="password">DigitalSignX509に渡すpasswordパラメタ</param>
/// <param name="flag">X509KeyStorageFlags</param>
public JWT_RS256_X509(string certificateFilePath, string password, X509KeyStorageFlags flag)
{
this.DigitalSignX509 = new DigitalSignX509(certificateFilePath, password, "SHA256", flag);
}