That would be a helpful feature to have for sure.

You can use SHA-256. More on it at https://experienceleaguecommunities.adobe.com/t5/adobe-experience-platform-launch/can-adobe-launch-encrypt-or-obfuscate-values/qaq-p/258681

You can explicitly set the mapping on https://mobilemarketing.adobe.com/ so that contextData variable is mapped to eVar/prop/event. More info at https://experienceleague.adobe.com/docs/mobile-services/android/analytics-android/actions.html?lang=en#section_3EBE813E54A24F6FB669B2478B5661F9    

Is this issue still resolved?