Firmware: Find possible solutions to prevent replay attacks on private telecommands

[mgm8]

References

• https://www.kaspersky.com/resource-center/definitions/replay-attack

[miguelboing]

Possible Solution:

• Create a counter for packages and increment the count after each package is send, the satellite wont do any actions if the count number received is wrong.
• The current count will appear in the report status telecommand.
• There will be a telecommand to reset the counting.
• Each telemetry received from groundstation will also have the current count.
• Different groundstation may need to comunicate between to check the current count.
• The counting should not be linear because it facilitates to break criptography.