Nicolas Bacca btchip

btchip / keybase.md

Created July 24, 2015 06:32

I hereby claim:

I am btchip on github.
I am nicolab (https://keybase.io/nicolab) on keybase.
I have a public key whose fingerprint is BAE8 8B19 F6E3 2323 6DEB 1AC7 683D 7938 DF55 15CE

To claim this, I am signing this object:

btchip / gist:ec28fb50dcfaf90136d58b10cc009d92

Created April 5, 2017 12:34

derive BIP 32

	void derive(cx_curve_t curve, unsigned int *path, unsigned int pathLength,
	unsigned char privateKey, unsigned char chain) {
	unsigned char tmpPrivateChain[64];
	unsigned int i;
	cx_ecfp_private_key_t tmpEcdsaPrivate;
	cx_curve_domain_t *domain = cx_ecfp_get_domain(curve);

	os_memmove(tmpPrivateChain, privateKey, 32);
	os_memmove(tmpPrivateChain + 32, chain, 32);

btchip / publishToJcenter.txt

Last active October 5, 2019 09:58

publish to jcenter

	group = publishedGroupId
	version = libraryVersion

	install {
	repositories.mavenInstaller {
	pom.project {
	packaging 'aar'
	groupId publishedGroupId
	artifactId artifact

btchip / balenos_ble.asc

Created November 28, 2019 16:31

Ledger Nano X : Bluetooth Low Energy Communication

btchip / recoverSeed.py

Created March 2, 2021 17:33

Recovering a hex HW1 / first generation Nano hardware wallet seed

	import wallycore
	import binascii
	import argparse

	def get_public_address(key):
	hashed = wallycore.hash160(wallycore.bip32_key_get_pub_key(key))
	return wallycore.base58_from_bytes(bytearray([0x00]) + hashed, wallycore.BASE58_FLAG_CHECKSUM)

	def test_path(mainKey, path):
	testKey = wallycore.bip32_key_from_parent_path(mainKey, path, wallycore.BIP32_FLAG_SKIP_HASH)

btchip / hidProxy.py

Last active November 10, 2021 18:48

Minimalistic Python implementation of Ledger Live HID proxy

	from ledgerblue.comm import getDongle, CommException
	import asyncio
	import websockets
	import json
	import binascii

	dongle = None

	async def hidProxy(websocket, path):
	global dongle

btchip / gist:edcc4cb7af3f0b23d85ccba266300cd5

Created February 22, 2026 16:26

	My public address : btchip.eth (0x112F0732E59E7600768dFc35Ba744b89F2356Cd8)
	0xc4dee7ffec721abc26797d8a031c9a5bee1d738cebf19720d1bfb19fac22dd902c1dffdb47dc2eaaa5b5b7ee1b30da048083d852d5c4976bca887c50c95e01a01c