fabio286 / easy-crc

A pure JavaScript and zero dependencies CRC node module.

Hi I'm Fabio Di Stasio 👋

I'm a web developer, i love tech, the open source world and JavaScript 💛.
My motto is: do things for the sake of making them, the rest will come by itself.

• 🔭 I’m currently working on Antares, an SQL client created on top of Electron and Vue.
• 💬 Ask me about JavaScript stack.
• 📫 How to reach me: [email protected]
• ⚡ Fun fact: I like prog rock, post-punk and when I'm not coding I like to play videogames.
• 💻 Website

easy-crc's Issues

Unexpected behaviour with crc8 dvb-s2

Hi @Fabio286,

I've a very specific use case which I need to implement for an external service. I create an unique ID with crc32 & crc8-dvbs2 and there seems to be a problem. The Service has an example which works fine with you algorithms see example below. But when I'm using a new one I ran into an unexpected behaviour maybe you could explain to me what is wrong.

Example:

MessageId = AT999999201812312359598880000000001
CRC-32(MessageId) = 0x45 0xA2 0xDF 0xF1
CRC-8(0x45 0xA2 0xDF 0xF1) = 0xF6
BASE-32(0x45 0xA2 0xDF 0xF1 0xF6) = IWRN74PW

New Message:

MessageId = RC100378202301201049399550000007026
CRC-32(MessageId) = 0x90 0x12 0xE7 0xCC
CRC-8(0x90 0x12 0xE7 0xCC) = 0 // but this should be 0x0A see https://crccalc.com/?crc=9012e7cc&method=crc8&datatype=hex&outtype=0
BASE-32(0x90 0x12 0xE7 0xCC 0x0A) = SAJOPTA= // but this should be SAJOPTAK

Can you pls help me?