Uploaded August 2023 | Updated September 2026, 2 weeks ago
In the final episode of the Bare Metal Programming Series, we're implementing signed firmware updates! Everything from using AES in the CBC-MAC configuration in the bootloader, to writing a signing application, to updating the firmware updater to work with the new images.
And of course, where would we be without a false celebration before the ultimate solution 😉
=[ 🔗 Links 🔗 ]=
AES Blog Post: github.com/francisrstokes/githublog/blob/main/2022/6/15/rolling-your-own-crypto-aes.md
Spec: nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf
Deeper justifications and analysis: csrc.nist.gov/csrc/media/projects/cryptographic-standards-and-guidelines/documents/aes-development/rijndael-ammended.pdf
Attacking AES with power analysis: youtube.com/watch?v=5Hn2D5lrzVo
🎥 Series Playlist: youtube.com/playlist?list=PLP29wDx6QmW7HaCrRydOnxcy8QmW0SNdQ
🗣 Discord: discord.gg/FPWaVgk
⭐️ Patreon: patreon.com/lowleveljavascript
💻 Github Repo: github.com/lowbyteproductions/bare-metal-series
In the final episode of the Bare Metal Programming Series, we're implementing signed firmware updates! Everything from using AES in the CBC-MAC configuration in the bootloader, to writing a signing application, to updating the firmware updater to work with the new images.
And of course, where would we be without a false celebration before the ultimate solution 😉
=[ 🔗 Links 🔗 ]=
AES Blog Post: github.com/francisrstokes/githublog/blob/main/2022/6/15/rolling-your-own-crypto-aes.md
Spec: nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf
Deeper justifications and analysis: csrc.nist.gov/csrc/media/projects/cryptographic-standards-and-guidelines/documents/aes-development/rijndael-ammended.pdf
Attacking AES with power analysis: youtube.com/watch?v=5Hn2D5lrzVo
🎥 Series Playlist: youtube.com/playlist?list=PLP29wDx6QmW7HaCrRydOnxcy8QmW0SNdQ
🗣 Discord: discord.gg/FPWaVgk
⭐️ Patreon: patreon.com/lowleveljavascript
💻 Github Repo: github.com/lowbyteproductions/bare-metal-series
![Ints, Uints, and Parsing an IP Packet Header [Parser Combinators From Scratch] Episode 7](https://i.ytimg.com/vi/X1sKg0_r4JM/mqdefault.jpg "Ints, Uints, and Parsing an IP Packet Header [Parser Combinators From Scratch] Episode 7
In this episode we finish up with binary parsing by building (almost) arbitrary precision integer and unsigned integer parsers, as well as a parser for extracting ascii strings.
Apologies for my voice in this one - I recorded at the tail end of a chest infection at 6am and it turns out thats when my voice is at its most Barry White.
=[ ℹ About ℹ ]=
During this series we will develop an understanding of the concept of parsing, and build our own parser combinator system from scratch. The system we build will be capable of parsing both binary and text data. Well make use of both object-oriented and function programming principles to develop an effective and intuitive library.
=[ 🔗 Links 🔗 ]=
- ⭐️ Patreon: https://www.patreon.com/lowleveljavascript
- 💌 Updates to your inbox: https://tinyletter.com/lowleveljavascript
- Playlist: https://www.youtube.com/watch?v=6oQLRhw5Ah0&list=PLP29wDx6QmW5yfO1LAgO8kU3aQEj8SIrU
- Github Repo: https://github.com/LowLevelJavaScript/Parser-Combinators-From-Scratch
- LLJS Subreddit: https://reddit.com/r/lowleveljavascript
- IP Packets: https://en.wikipedia.org/wiki/IPv4#Packet_structure
- IP Packet Breakdown: http://www.cs.miami.edu/home/burt/learning/Csc524.092/notes/ip_example.html
- Ben Eater: https://www.youtube.com/user/eaterbc
- Twos Complement: https://en.wikipedia.org/wiki/Two%27s_complement
- Signed Binary: https://en.wikipedia.org/wiki/Signed_number_representations#Signed_magnitude_representation_(SMR)")
![Ones and Zeros: Binary Part 1 [Parser Combinators from Scratch] Episode 6](https://i.ytimg.com/vi/ZgHlc3Q2YjU/mqdefault.jpg "Ones and Zeros: Binary Part 1 [Parser Combinators from Scratch] Episode 6
In this episode the parser combinator system is turned on binary data. We learn how to specify and extract individual bits, Typed Arrays, ArrayBuffers and DataViews, and about important concepts like bit ordering.
=[ ℹ About ℹ ]=
During this series we will develop an understanding of the concept of parsing, and build our own parser combinator system from scratch. The system we build will be capable of parsing both binary and text data. Well make use of both object-oriented and function programming principles to develop an effective and intuitive library.
=[ 🔗 Links 🔗 ]=
- ⭐️ Patreon: https://www.patreon.com/lowleveljavascript
- 💌 Updates to your inbox: https://tinyletter.com/lowleveljavascript
- Playlist: https://www.youtube.com/watch?v=6oQLRhw5Ah0&list=PLP29wDx6QmW5yfO1LAgO8kU3aQEj8SIrU
- Github Repo: https://github.com/LowLevelJavaScript/Parser-Combinators-From-Scratch
- LLJS Subreddit: https://reddit.com/r/lowleveljavascript
- IP Packet Structure: https://en.wikipedia.org/wiki/IPv4#Packet_structure
- ArrayBuffer: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
- DataView: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView
- Typed Arrays: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray")
![[stream] More bus piracy, logic analysis, and e-SPI-onage](https://i.ytimg.com/vi/_wGYhp6RxQ0/mqdefault.jpg "[stream] More bus piracy, logic analysis, and e-SPI-onage
=[ 🔗 Links 🔗 ]=
🎥 Stream Playlist: https://www.youtube.com/playlist?list=PLP29wDx6QmW7jg0LgRJYAmHLM6G_6NDw6
💌 Updates to your inbox: https://tinyletter.com/lowleveljavascript
🗣 Discord: https://discord.gg/FPWaVgk
⭐️ Patreon: https://www.patreon.com/lowleveljavascript
💻 Github Repo:")
![Operations! [The Bits And Bytes Of Binary ep.2]](https://i.ytimg.com/vi/a23wQcaBfpc/mqdefault.jpg "Operations! [The Bits And Bytes Of Binary ep.2]
This mini series is all about binary. Over the course of the series, well be building a library that gives us precise control of every bit and operation.
Youll learn how the logical and arithmetic operations work, how different kinds of numbers are encoded, how to set, clear and toggle bits, and how we can create representations of structured binary data.
1. Bits
2. Operations
3. Unsigned Numbers
4. Addition
5. Zero Extension
6. Twos complement
7. Overflow Addition and Sign Extension
8. Shifting
9. Setting, Clearing, and Toggling Bits
10. Endianness
11. Structures
=[ 🔗 Links 🔗 ]=
💌 Updates to your inbox: https://tinyletter.com/lowleveljavascript
⭐️ Patreon: https://www.patreon.com/lowleveljavascript
🎥 Playlist: https://www.youtube.com/watch?v=pOM86M1pGb4&list=PLP29wDx6QmW47oPsNBFNEi_SYTOLDJXqQ
💻 Github Repo: https://github.com/LowLevelJavaScript/The-Bits-And-Bytes-Of-Binary
=[ 🎶 Music 🎶 ]=
Bad Snacks - Take It Easy")
