A bit of detour I took in past two months was into the worlds that typically aren't combined: ASN.1 and AI. Anyway, weird results require weird numbers:
https://vda.li/en/posts/2026/03/23/synta/
ASN.1 for legacy apps: Synta

Pretty much everything I deal with requires parsing ASN.1 encodings. ASN.1 definitions published as part of internet RFCs: certificates are encoded using DER...