mirror of
https://github.com/waku-org/nwaku.git
synced 2025-01-18 19:01:24 +00:00
dbbc0f750b
* wip: updates the hash interface * updates hash unittests * exposes appendLength * updates proof gen interface and the unittests * enables test, fixes proofGen and verify utils and unittest, beautifies the code * removes int size from mem index type * enables all the rln tests * adds documentation of two private procs * documentation for the appendLength * minor clean up * adds clarificaltion on the endianness of input length * Delete .DS_Store
67 lines
2.7 KiB
Nim
67 lines
2.7 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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{.push raises: [Defect].}
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import
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os,
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waku_rln_relay_types
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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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## 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: RLN[Bn256],
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input_buffer: ptr Buffer): bool {.importc: "update_next_member".}
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proc delete_member*(ctx: RLN[Bn256], index: uint): bool {.importc: "delete_member".}
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proc get_root*(ctx: 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: RLN[Bn256], keypair_buffer: ptr Buffer): bool {.importc: "key_gen".}
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proc generate_proof*(ctx: RLN[Bn256],
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input_buffer: ptr Buffer,
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output_buffer: ptr Buffer): bool {.importc: "generate_proof".}
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## input_buffer serialized as [ id_key<32> | id_index<8> | epoch<32> | signal_len<8> | signal<var> ]
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## output_buffer holds the proof data and should be parsed as |proof<256>|root<32>|epoch<32>|share_x<32>|share_y<32>|nullifier<32>|
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## sizes are in bytes
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proc verify*(ctx: 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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## proof_buffer [ proof<256>| root<32>| epoch<32>| share_x<32>| share_y<32>| nullifier<32> | signal_len<8> | signal<var> ]
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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 RLN[Bn256]): bool {.importc: "new_circuit_from_params".}
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proc hash*(ctx: RLN[Bn256],
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inputs_buffer: ptr Buffer,
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output_buffer: ptr Buffer): bool {.importc: "signal_to_field".}
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{.pop.}
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