ISAAC

Hold

Techniques

A stream cipher used to obfuscate RuneScape packet opcodes.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

5Hacker News·9/1/2026research
How RuneScape Worked Over 56k Dial-Up
This article explains how 2004 RuneScape managed to run a 3D multiplayer RPG in a browser over slow 56k dial-up connections. It breaks down the game's networking constraints, including a 600ms server tick, TCP-only transport in a Java applet, and opcode encryption with ISAAC.