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DARPA suggests turning old C code automatically into Rust – using AI, of course (www.theregister.com)

submitted 3 months ago by [email protected] to c/[email protected]

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To accelerate the transition to memory safe programming languages, the US Defense Advanced Research Projects Agency (DARPA) is driving the development of TRACTOR, a programmatic code conversion vehicle.

The term stands for TRanslating All C TO Rust. It's a DARPA project that aims to develop machine-learning tools that can automate the conversion of legacy C code into Rust.

The reason to do so is memory safety. Memory safety bugs, such buffer overflows, account for the majority of major vulnerabilities in large codebases. And DARPA's hope is that AI models can help with the programming language translation, in order to make software more secure.

"You can go to any of the LLM websites, start chatting with one of the AI chatbots, and all you need to say is 'here's some C code, please translate it to safe idiomatic Rust code,' cut, paste, and something comes out, and it's often very good, but not always," said Dan Wallach, DARPA program manager for TRACTOR, in a statement.

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[–] someguy3 5 points 3 months ago (1 children)

That's a pretty good explanation. So along the same level of explanation, what are these memory problems they are talking about?

[–] [email protected] 13 points 3 months ago (1 children)

I explained a little about buffer overflows, but in essence programming is the act of making a fancy list of commands for your computer to run one after the other.

One concept in programming is an "array" or list of things, sometimes in languages like C the developer is responsible for keeping track of how many items are in a list. When that program accepts info from other programs (like a chat message, video call, website to render, etx) in the form of an array sometimes the sender can send more info than the developer expected to receive.

When that extra info is received it can actually modify the fancy list of commands in such a way that the data itself is run directly on the computer instead of what the developer originally intended.

Bad guy sends too much data, at the end of the data are secret instructions to install a new program that watches every key you type on your keyboard and send that info to the bad guy.

[–] someguy3 6 points 3 months ago

Many thanks.