design:

fields:
serial - 32 chars
MACs - 3*12 chars
Disk - 36 chars
additional - 24 chars

string length in GET could be up to 128+3+? (160)

string is concatenated without delimiters and then hashed

the hash must be updated if device changes machine-id (dual-hash to go from device ID)

---
Linux: 33+39+37+? = 109 + hostname
design: 33+39+37+18

7d461dac87e84043a3360614c96496d8;
e4b31843d1c7,507b9dea1a57;
52f04894-f403-4ea1-b5dd-4ad04deb9cbd;
pecka


---
OpenWRT: 32+39+1+? = 72 + hostname

000000001711bd41,a01041,BCM2835;
b827eb11bd41;
;
OpenWrt

---
Advrouter: 8+13+1+15 = 37

6602882;
000A1485E3BC;
;
SPECTRE-v3L-LTE

---

CS-Tech device
1) Serial no ... 10+1?
			l_tok="$(status sys -v | grep -i "^Serial Number" | sed "s/[^:]*:[ ]*//")"

2) MAC ... 12+1
			l_tok="$(status lan -v | grep -i "^MAC Address" | sed "s/[^:]*:[ ]*//")"

3) HW UUID ... 36+1
			l_tok="$(status sys -v | grep -i "^Hardware UUID" | sed "s/[^:]*:[ ]*//")"

4) product type ... 5+1
			l_tok="$(status sys -v | grep -i "^Product Type" | sed "s/[^:]*:[ ]*//")"