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Cairo bootloader

Cairo bootloader port for the Rust Cairo VM.

The Cairo bootloader is a Cairo program that loads and executes other programs in a provable way. It is also able to execute Cairo PIEs (Position Independent Executables) along with regular Cairo programs.

We currently support Cairo bootloader v0.13.0.

How to use this library

We provide two hint processors that can be used to execute bootloader hints.

Standalone hint processor

The standalone hint processor (BootloaderHintProcessor) is the simplest way to execute the bootloader. You can just declare the hint processor and use it in cairo_run_program.

Check the run program example for more details on how to configure the bootloader options.

Minimal hint processor.

For advanced use cases, we also provide the MinimalBootloaderHintProcessor struct. This is useful when you want to mix multiple hint processors (ex: Starknet OS hints + bootloader hints + builtin hints) and avoid checking for the Cairo VM hints multiple times, or simply avoid compatibility issues between different versions of cairo-vm.

To use this hint processor, you will need to define your own hint processor structure and implement the HintProcessorLogic trait yourself.

Note that this is exactly how the BootloaderHintProcessor struct is implemented.

Limitations

  • Composite packed outputs are not supported yet.
  • The bootloader is not able to load hints for Cairo 0 programs with hints yet.

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Cairo bootloader port for the Rust Cairo VM.

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