marcan

import hmac, hashlib

# Data from I²C trace at https://hackaday.io/project/19480-raspberry-pi-camera-v21-reversed/log/52547-i2c-logic-analyzer-trace
# Secret key from VideoCore blob

# serial[8], serial[7:4], serial[3:0]
serial = bytes.fromhex("EE8C196D8301230B59")

# rPi -> camera random number
numIn = bytes.fromhex("5805F3C898C3133154498E082F2E703516F2DBD1")

bignall

Usage

• Save the two files below. I put them in '~/.scripts'
• Modify the configuration in konsole-watcher.sh to your liking
• Modify the location of konsole-watcher.sh in konsole-watcher-autostart.sh if you chose to put it somewhere besides ~/.scripts
• Create the directory ~/.konsole (or other location you chose for the save file)
• Create a symlink to konsole-watcher-autostart.sh in '~/.config/autostart-scripts
• or open System Settings > Startup and Shutdown and add a script to the Script Files (it does the same thing as creating the symlink)
• You might want to add a menu entry as well in case KDE autostart doesn't work for some reason

rygorous

static inline U32 ppcmask(U32 mb, U32 me)
{
   U32 maskmb = ~0u >> mb;
   U32 maskme = ~0u << (31 - me);
   return (mb <= me) ? maskmb & maskme : maskmb | maskme;
}

static inline U32 rotl32(U32 x, U32 amount)
{
   return (x << amount) | (x >> ((32 - amount) & 31));