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# pylint: skip-file
from browser import window # type: ignore[import-not-found]
import re
from typing import Any, Optional, cast
__all__ = [
"cdata",
"lib",
"ffi"
]
class cdata:
def __init__(self, array: Any) -> None:
self.__array = array
@property
def array(self) -> Any:
return self.__array
def __bytes__(self) -> bytes:
return bytes(window.Array["from"](self.__array))
class lib:
@staticmethod
def ed25519_priv_sign(sig: cdata, priv: cdata, msg: cdata, msg_size: int, nonce: cdata) -> None:
sig_ptr = window.Module._malloc(sig.array.length)
window.ed25519_priv_sign(sig_ptr, priv.array, msg.array, msg_size, nonce.array)
sig.array.set(window.HEAPU8.subarray(sig_ptr, sig_ptr + sig.array.length))
window.Module._free(sig_ptr)
@staticmethod
def ed25519_seed_sign(sig: cdata, seed: cdata, msg: cdata, msg_size: int) -> None:
sig_ptr = window.Module._malloc(sig.array.length)
window.ed25519_seed_sign(sig_ptr, seed.array, msg.array, msg_size)
sig.array.set(window.HEAPU8.subarray(sig_ptr, sig_ptr + sig.array.length))
window.Module._free(sig_ptr)
@staticmethod
def ed25519_verify(sig: cdata, ed25519_pub: cdata, msg: cdata, msg_size: int) -> int:
return cast(int, window.ed25519_verify(sig.array, ed25519_pub.array, msg.array, msg_size))
@staticmethod
def curve25519_pub_to_ed25519_pub(ed25519_pub: cdata, curve25519_pub: cdata, set_sign_bit: bool) -> None:
ed25519_pub_ptr = window.Module._malloc(ed25519_pub.array.length)
window.curve25519_pub_to_ed25519_pub(ed25519_pub_ptr, curve25519_pub.array, set_sign_bit)
ed25519_pub.array.set(window.HEAPU8.subarray(
ed25519_pub_ptr,
ed25519_pub_ptr + ed25519_pub.array.length
))
window.Module._free(ed25519_pub_ptr)
@staticmethod
def ed25519_pub_to_curve25519_pub(curve25519_pub: cdata, ed25519_pub: cdata) -> int:
curve25519_pub_ptr = window.Module._malloc(curve25519_pub.array.length)
result = cast(int, window.ed25519_pub_to_curve25519_pub(curve25519_pub_ptr, ed25519_pub.array))
curve25519_pub.array.set(window.HEAPU8.subarray(
curve25519_pub_ptr,
curve25519_pub_ptr + curve25519_pub.array.length
))
window.Module._free(curve25519_pub_ptr)
return result
@staticmethod
def priv_to_curve25519_pub(curve25519_pub: cdata, priv: cdata) -> None:
curve25519_pub_ptr = window.Module._malloc(curve25519_pub.array.length)
window.priv_to_curve25519_pub(curve25519_pub_ptr, priv.array)
curve25519_pub.array.set(window.HEAPU8.subarray(
curve25519_pub_ptr,
curve25519_pub_ptr + curve25519_pub.array.length
))
window.Module._free(curve25519_pub_ptr)
@staticmethod
def priv_to_ed25519_pub(ed25519_pub: cdata, priv: cdata) -> None:
ed25519_pub_ptr = window.Module._malloc(ed25519_pub.array.length)
window.priv_to_ed25519_pub(ed25519_pub_ptr, priv.array)
ed25519_pub.array.set(window.HEAPU8.subarray(
ed25519_pub_ptr,
ed25519_pub_ptr + ed25519_pub.array.length
))
window.Module._free(ed25519_pub_ptr)
@staticmethod
def seed_to_ed25519_pub(ed25519_pub: cdata, seed: cdata) -> None:
ed25519_pub_ptr = window.Module._malloc(ed25519_pub.array.length)
window.seed_to_ed25519_pub(ed25519_pub_ptr, seed.array)
ed25519_pub.array.set(window.HEAPU8.subarray(
ed25519_pub_ptr,
ed25519_pub_ptr + ed25519_pub.array.length
))
window.Module._free(ed25519_pub_ptr)
@staticmethod
def priv_force_sign(priv_out: cdata, priv_in: cdata, set_sign_bit: bool) -> None:
priv_out_ptr = window.Module._malloc(priv_out.array.length)
window.priv_force_sign(priv_out_ptr, priv_in.array, set_sign_bit)
priv_out.array.set(window.HEAPU8.subarray(
priv_out_ptr,
priv_out_ptr + priv_out.array.length
))
window.Module._free(priv_out_ptr)
@staticmethod
def seed_to_priv(priv: cdata, seed: cdata) -> None:
priv_ptr = window.Module._malloc(priv.array.length)
window.seed_to_priv(priv_ptr, seed.array)
priv.array.set(window.HEAPU8.subarray(priv_ptr, priv_ptr + priv.array.length))
window.Module._free(priv_ptr)
@staticmethod
def x25519(shared_secret: cdata, priv: cdata, curve25519_pub: cdata) -> int:
shared_secret_ptr = window.Module._malloc(shared_secret.array.length)
result = cast(int, window.x25519(shared_secret_ptr, priv.array, curve25519_pub.array))
shared_secret.array.set(window.HEAPU8.subarray(
shared_secret_ptr,
shared_secret_ptr + shared_secret.array.length
))
window.Module._free(shared_secret_ptr)
return result
@staticmethod
def xeddsa_init() -> int:
return cast(int, window.xeddsa_init())
XEDDSA_VERSION_MAJOR: int = window.XEDDSA_VERSION_MAJOR
XEDDSA_VERSION_MINOR: int = window.XEDDSA_VERSION_MINOR
XEDDSA_VERSION_REVISION: int = window.XEDDSA_VERSION_REVISION
class ffi:
@staticmethod
def new(type_definition: str, data: Optional[bytes] = None) -> cdata:
match = re.match(r"uint8_t\[(\d+)?\]", type_definition)
if match is None:
raise ValueError("Only uint8_t arrays are supported for now.")
array_size = match.group(1)
if array_size is None and data is None:
raise ValueError("Data must be supplied if an array of unknown size is requested.")
return cdata(
window.Uint8Array.new(array_size)
if data is None
else window.Uint8Array["from"](list(data))
)
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