https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/security/spec/X509EncodedKeySpec.html
X509EncodedKeySpec (Java SE 25 & JDK 25)
declaration: module: java.base, package: java.security.spec, class: X509EncodedKeySpec
java sejdk
https://groups.google.com/g/microsoft.public.dotnet.security/c/2FiVU04vcQM
Is there a x509EncodedKeySpec / KeyFactory for C# ???
c