Repository ↗
Source code and build instructions.
Poulpy ecosystem / Phantom
Phantom.
Programs under encryption.
A fully encrypted RISC-V virtual machine. Phantom keeps the program private alongside its inputs, including instructions, constants, and execution state.
Encrypted execution
From Rust to a private program.
Phantom combines a compiler, runtime, and FHE virtual machine. Developers can publish an encrypted program for execution on encrypted or plaintext inputs.
Write
Write a Rust program and compile it to RISC-V.
Encode
Represent the binary as polynomials for RLWE-based FHE.
Encrypt
Encrypt the program before handing it to the evaluator.
Execute
Run it through FHE circuits for instructions, registers, RAM, and the program counter.
Built with Poulpy
FHE primitives become a virtual machine.
Phantom’s VM depends on Poulpy’s HAL, core, scheme operations, and CPU backends. Its repository defines the dependency versions and build toolchain.
Explore Phantom
Source, examples, and background.
Template example ↗
An end-to-end starting point for a program.
Project background ↗
Jean-Philippe Bossuat’s overview of Phantom.