/// <summary>
/// Export RSA private key
/// </summary>
/// <param name="rsa"></param>
/// <param name="format"></param>
/// <param name="usePemFormat"></param>
/// <returns></returns>
public static string ExportPrivateKey(this MsRSA rsa, RsaKeyFormat format, bool usePemFormat = false)
{
var key = format switch
{
RsaKeyFormat.XML => rsa.ExportKeyInLvccXml(true),
RsaKeyFormat.JSON => rsa.ExportKeyInJson(true),
#if NETCOREAPP3_1 || NETSTANDARD2_1
RsaKeyFormat.Pkcs1 => BaseConv.ToBase64(rsa.ExportRSAPrivateKey()),
RsaKeyFormat.Pkcs8 => BaseConv.ToBase64(rsa.ExportPkcs8PrivateKey()),
#else
RsaKeyFormat.Pkcs1 => rsa.GetPrivateKeyInPkcs1(),
RsaKeyFormat.Pkcs8 => rsa.GetPrivateKeyInPkcs8(),
#endif
_ => throw new NotSupportedException("Unknown RSA key type.")
};
if (usePemFormat)
{
key = format switch
{
RsaKeyFormat.XML => key,
RsaKeyFormat.JSON => key,
RsaKeyFormat.Pkcs1 => key.RemovePkcs1PrivateKeyFormat(),
RsaKeyFormat.Pkcs8 => key.RemovePkcs8PrivateKeyFormat(),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
return(key);
}
/// <summary>
/// Import RSA private key
/// </summary>
/// <param name="rsa"></param>
/// <param name="format"></param>
/// <param name="privateKey"></param>
/// <param name="isPem"></param>
public static void ImportPrivateKey(this MsRSA rsa, RsaKeyFormat format, string privateKey, bool isPem = false)
{
if (isPem)
{
privateKey = format switch
{
RsaKeyFormat.XML => privateKey,
RsaKeyFormat.JSON => privateKey,
RsaKeyFormat.Pkcs1 => privateKey.RemovePkcs1PrivateKeyFormat(),
RsaKeyFormat.Pkcs8 => privateKey.RemovePkcs8PrivateKeyFormat(),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
switch (format)
{
case RsaKeyFormat.XML:
rsa.ImportKeyInLvccXml(privateKey);
break;
case RsaKeyFormat.JSON:
rsa.ImportKeyInJson(privateKey);
break;
case RsaKeyFormat.Pkcs1:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPrivateKey(BaseConv.FromBase64(privateKey), out _);
#else
rsa.TouchFromPrivateKeyInPkcs1(privateKey, out _);
#endif
break;
case RsaKeyFormat.Pkcs8:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportPkcs8PrivateKey(BaseConv.FromBase64(privateKey), out _);
#else
rsa.TouchFromPrivateKeyInPkcs8(privateKey, out _);
#endif
break;
}
}