mirror of https://github.com/waku-org/nwaku.git
68 lines
2.3 KiB
Nim
68 lines
2.3 KiB
Nim
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# this module contains the Nim wrappers for the rln library https://github.com/kilic/rln/blob/3bbec368a4adc68cd5f9bfae80b17e1bbb4ef373/src/ffi.rs
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import stew/byteutils, os
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from strutils import rsplit
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template sourceDir: string = currentSourcePath.rsplit(DirSep, 1)[0]
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# librln.dylib is the binary executable of rln library (originally implemented in rust with an exposed C API)
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# contains the key generation and other relevant functions
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# to generate librln.dylib, clone this repo https://github.com/kilic/rln
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# and run the following command in the root directory of the cloned project
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# cargo build
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# can find the .dylib file under the target/debug directory
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# this file is already generated and copied here
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const libName* = sourceDir / "librln.dylib" # TODO may need to load different libs based on OS
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# Data types -----------------------------
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# pub struct Buffer {
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# pub ptr: *const u8,
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# pub len: usize,
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# }
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type
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Buffer* = object
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`ptr`*: pointer
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len*: csize_t
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RLNBn256* = object
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# Procedures ------------------------------
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# all the following procedures are Nim wrappers for the functions defined in libName
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{.push dynlib: libName.}
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# pub extern "C" fn new_circuit_from_params(
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# merkle_depth: usize,
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# index: usize,
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# parameters_buffer: *const Buffer,
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# ctx: *mut *mut RLN<Bn256>,
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# ) -> bool
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proc newCircuitFromParams*(merkle_depth: csize_t, parameters_buffer: ptr Buffer, ctx: var ptr RLNBn256): bool{.importc: "new_circuit_from_params".}
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# pub extern "C" fn key_gen(ctx: *const RLN<Bn256>, keypair_buffer: *mut Buffer) -> bool
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proc keyGen*(ctx: ptr RLNBn256, keypair_buffer: var Buffer): bool {.importc: "key_gen".}
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# pub extern "C" fn hash(
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# ctx: *const RLN<Bn256>,
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# inputs_buffer: *const Buffer,
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# input_len: *const usize,
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# output_buffer: *mut Buffer,
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# ) -> bool
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proc hash*(ctx: ptr RLNBn256, inputs_buffer:ptr Buffer, input_len: ptr csize_t, output_buffer: ptr Buffer ) {.importc: "hash".} #TODO not tested yet
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# pub extern "C" fn verify(
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# ctx: *const RLN<Bn256>,
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# proof_buffer: *const Buffer,
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# public_inputs_buffer: *const Buffer,
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# result_ptr: *mut u32,
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# ) -> bool
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# pub extern "C" fn generate_proof(
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# ctx: *const RLN<Bn256>,
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# input_buffer: *const Buffer,
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# output_buffer: *mut Buffer,
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# ) -> bool
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{.pop.}
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