// X.509からの変換
#region X.509 鍵 → ECDsaProvider(Cngkey, ECParameters) → Jwk
// X.509 は、NET47以降
#if NET45 || NET46
#else
#region *.cer
#region Jwk
/// <summary>X509CerToJwk</summary>
/// <param name="certificateFilePath">X.509鍵(*.cer)</param>
/// <param name="settings">JsonSerializerSettings</param>
/// <returns>Jwk公開鍵</returns>
public static string X509CerToJwk(
string certificateFilePath,
JsonSerializerSettings settings = null)
{
return(EccPublicKeyConverter.ParamToJwk( // *.cer is PublicKey -> ExportParameters(false)
EccPublicKeyConverter.X509CerToProvider(certificateFilePath).ExportParameters(false), settings));
}
/// <summary>X509CerToECParam</summary>
/// <param name="certificateFilePath">X.509鍵(*.cer)</param>
/// <returns>ECParameters（公開鍵）</returns>
public static ECParameters X509CerToECParam(string certificateFilePath)
{
return(EccPublicKeyConverter.X509CerToProvider(
certificateFilePath).ExportParameters(false));
}
/// <summary>X509CerToCngkey</summary>
/// <param name="certificateFilePath">X.509鍵(*.cer)</param>
/// <returns>CngKey（公開鍵）</returns>
public static CngKey X509CerToCngkey(string certificateFilePath)
{
return(((ECDsaCng)EccPublicKeyConverter.X509CerToProvider(certificateFilePath)).Key);
}