mirror of https://github.com/waku-org/nwaku.git
62 lines
2.4 KiB
Nim
62 lines
2.4 KiB
Nim
# 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 os
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const libPath = "vendor/rln/target/debug/"
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when defined(Windows):
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const libName* = libPath / "rln.dll"
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elif defined(Linux):
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const libName* = libPath / "librln.so"
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elif defined(MacOsX):
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const libName* = libPath / "librln.dylib"
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# all the following procedures are Nim wrappers for the functions defined in libName
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{.push dynlib: libName, raises: [Defect].}
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type RLN*[E] {.incompleteStruct.} = object
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type Bn256* = pointer
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## Buffer struct is taken from
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# https://github.com/celo-org/celo-threshold-bls-rs/blob/master/crates/threshold-bls-ffi/src/ffi.rs
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type Buffer* = object
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`ptr`*: ptr uint8
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len*: uint
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type Auth* = object
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secret_buffer*: ptr Buffer
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index*: uint
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#------------------------------ Merkle Tree operations -----------------------------------------
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proc update_next_member*(ctx: ptr RLN[Bn256],
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input_buffer: ptr Buffer): bool {.importc: "update_next_member".}
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proc delete_member*(ctx: ptr RLN[Bn256], index: uint): bool {.importc: "delete_member".}
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proc get_root*(ctx: ptr RLN[Bn256], output_buffer: ptr Buffer): bool {.importc: "get_root".}
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#----------------------------------------------------------------------------------------------
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#-------------------------------- zkSNARKs operations -----------------------------------------
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proc key_gen*(ctx: ptr RLN[Bn256], keypair_buffer: ptr Buffer): bool {.importc: "key_gen".}
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proc generate_proof*(ctx: ptr RLN[Bn256],
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input_buffer: ptr Buffer,
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auth: ptr Auth,
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output_buffer: ptr Buffer): bool {.importc: "generate_proof".}
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proc verify*(ctx: ptr RLN[Bn256],
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proof_buffer: ptr Buffer,
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result_ptr: ptr uint32): bool {.importc: "verify".}
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#----------------------------------------------------------------------------------------------
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#-------------------------------- Common procedures -------------------------------------------
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proc new_circuit_from_params*(merkle_depth: uint,
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parameters_buffer: ptr Buffer,
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ctx: ptr (ptr RLN[Bn256])): bool {.importc: "new_circuit_from_params".}
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proc hash*(ctx: ptr RLN[Bn256],
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inputs_buffer: ptr Buffer,
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input_len: uint,
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output_buffer: ptr Buffer): bool {.importc: "hash".}
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{.pop.} |