/// <summary>
/// Export RSA public key
/// </summary>
/// <param name="rsa"></param>
/// <param name="format"></param>
/// <param name="usePemFormat"></param>
/// <returns></returns>
public static string ExportPublicKey(this MsRSA rsa, RsaKeyFormat format, bool usePemFormat = false)
{
var key = format switch
{
RsaKeyFormat.XML => rsa.ExportKeyInLvccXml(false),
RsaKeyFormat.JSON => rsa.ExportKeyInJson(false),
#if NETCOREAPP3_1 || NETSTANDARD2_1
RsaKeyFormat.Pkcs1 => BaseConv.ToBase64(rsa.ExportRSAPublicKey()),
RsaKeyFormat.Pkcs8 => BaseConv.ToBase64(rsa.ExportRSAPublicKey()),
#else
RsaKeyFormat.Pkcs1 => rsa.GetPublicKeyInPkcs1(),
RsaKeyFormat.Pkcs8 => rsa.GetPublicKeyInPkcs8(),
#endif
_ => throw new NotSupportedException("Unknown RSA key type.")
};
if (usePemFormat)
{
key = format switch
{
RsaKeyFormat.XML => key,
RsaKeyFormat.JSON => key,
RsaKeyFormat.Pkcs1 => key.RemovePkcs1PublicKeyFormat(),
RsaKeyFormat.Pkcs8 => key.RemovePkcs8PublicKeyFormat(),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
return(key);
}
/// <summary>
/// Import RSA public key
/// </summary>
/// <param name="rsa"></param>
/// <param name="format"></param>
/// <param name="publicKey"></param>
/// <param name="isPem"></param>
public static void ImportPublicKey(this MsRSA rsa, RsaKeyFormat format, string publicKey, bool isPem = false)
{
if (isPem)
{
publicKey = format switch
{
RsaKeyFormat.XML => publicKey,
RsaKeyFormat.JSON => publicKey,
RsaKeyFormat.Pkcs1 => publicKey.RemovePkcs1PublicKeyFormat(),
RsaKeyFormat.Pkcs8 => publicKey.RemovePkcs8PublicKeyFormat(),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
switch (format)
{
case RsaKeyFormat.XML:
rsa.ImportKeyInLvccXml(publicKey);
break;
case RsaKeyFormat.JSON:
rsa.ImportKeyInJson(publicKey);
break;
case RsaKeyFormat.Pkcs1:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPublicKey(BaseConv.FromBase64(publicKey), out _);
#else
rsa.TouchFromPublicKeyInPkcs1(publicKey, out _);
#endif
break;
case RsaKeyFormat.Pkcs8:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPublicKey(BaseConv.FromBase64(publicKey), out _);
#else
rsa.TouchFromPublicKeyInPkcs8(publicKey, out _);
#endif
break;
}
}
}