JK thaarok

SFClib code checking

Using hardhat-tracer to get slot key, where is sfclib address in SFC during npx hardhat test --fulltrace:

[CALL] UnitTestSFC(0x5fbdb2315678afecb367f032d93f642f64180aa3).initialize(sealedEpoch: 12, _totalSupply: 0, nodeDriver: [NodeDriverAuth], lib: 0xDc64a140Aa3E981100a9becA4E685f962f0cF6C9, _c: [UnitTestConstantsManager], owner: 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266)
[SSTORE] 0x0000000000000000000000000000000000000000000000000000000000000080 ← 0x000000000000000000000000dc64a140aa3e981100a9beca4e685f962f0cf6c9

Read storage slot with sfclib address from SFC:

Example data: (Opera fakenet)

Pubkey: 0xc0048d505c351f4837cec72bce6f4254f5e4bc3f2c9a4816841db64319eee8b714ef9173fbf66d039b782624713791840846b2788d4b65a425adeba85a4b57efe0cd

Converts to address: 0x239fA7623354eC26520dE878B52f13Fe84b06971

Solidity:

    function pubkeyToAddress(bytes calldata pubkey) external pure returns(address) {
 require(pubkey.length == 66 &amp;&amp; pubkey[0] == 0xc0, "malformed pubkey");

Yubikey for SSH

Ref: https://developers.yubico.com/SSH/Securing_SSH_with_FIDO2.html
Gnome-keyring issue: https://gitlab.gnome.org/GNOME/gnome-keyring/-/issues/101

First hardware key setup - FIDO

Replace "MyYubikeyName" with a nickname for the hardware key:

ssh-keygen -t ed25519-sk -O resident -O application=ssh:MyYubikeyName -O verify-required

Replacing go-ethereum/lachesis-base with custom branch for development:

go mod edit -replace github.com/ethereum/go-ethereum=github.com/hkalina/go-ethereum@86abe1a01dc15bb3282628cc39eb7b451e6c1113
go mod edit -replace github.com/Fantom-foundation/lachesis-base=github.com/hkalina/lachesis-base@01569740d42de172b09866c8bb45e9aabd8b0235
GOPRIVATE=github.com/Fantom-foundation go mod tidy

Running Opera with websocket:

build/opera --genesis /media/sda2/opera/testnet.g --ipcpath /home/jkalina/.opera/opera.ipc \

	package main

	import (
	"context"
	"fmt"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/common/hexutil"
	"github.com/ethereum/go-ethereum/rlp"
	"github.com/ethereum/go-ethereum/rpc"
	)

	package genesis

	// go-gzip, no hashing elapsed=49.274027963s
	// pgzip.NewReaderN(reader, 1024, 100*1024) , no hashing, elapsed=1m13.959573387s

	import (
	"archive/tar"
	"crypto/sha256"
	"encoding/hex"
	"fmt"

	adb shell
	pm list packages -f

	# xiaomi calendar
	pm disable-user --user 0 com.xiaomi.calendar

	# aplikační trezor
	pm disable-user --user 0 com.mi.android.globalminusscreen

	# čistič

	package driver

	import (
	"crypto/ecdsa"
	"github.com/gochain/gochain/v4/accounts/keystore"
	"os"
	"testing"
	)

	const PrivateKeyStore = "~/.opera/fakenet-1/keystore/UTC--2023-04-25T07-50-08.017708542Z--239fa"

	#!/bin/python3
	import os
	import re
	import collections

	configs = set()
	buildNumbers = set()
	totalTimeTable = collections.defaultdict(dict)
	buildTxsTable = collections.defaultdict(dict)
	txsPerSecTable = collections.defaultdict(dict)

	func TestGoHashSerialization(t *testing.T) {
	hasher := sha256.New()
	hasher.Write([]byte{0x2})
	bytes, err := hasher.(encoding.BinaryMarshaler).MarshalBinary()
	if err != nil {
	t.Fatalf("%s", err)
	}

	hasher2 := sha256.New()
	err = hasher2.(encoding.BinaryUnmarshaler).UnmarshalBinary(bytes)