I'd trade the field layer of ISO 8583 for some ASN.1 any day! Luckily, there's a bit of everything in the archeological site that is ISO 8583, and field 55 (wh

I'd trade the field layer of ISO 8583 for some ASN.1 any day! Luckily, there's a bit of everything in the archeological site that is ISO 8583, and field 55 (where EMV chip data goes, and EMV itself is quite ASN.1-heavy, presumably for historical reasons) and some others in fact contain something very close to it :)