hyunsikjeong

export interface HDWKeyStore {
    ...
    getSeedHashes(): Promise<SeedHash[]>;
    importSeed(params: {
        secret: SecretSeedStorage;
        passphrase?: string;
    }): Promise<SeedHash>;
    exportSeed(params: {
        seedHash: SeedHash;
        passphrase: string;

hyunsikjeong

var keystore = require("codechain-keystore");
var CCKey = keystore.CCKey;

async function main() {
   var passphrase = "codechain";
   var cckey = await CCKey.create({ dbType: "in-memory" });
   console.log(cckey);
   var seedHash = await cckey.hdwseed.createSeed({ passphrase });
  
   console.log(`Created a seed with hash: ${seedHash}`);

hyunsikjeong

from PIL import Image
import os

image = Image.new('RGB', (768, 768), color = 'black')
image.save('base_input.png')
os.system('neko meow.n base_input.png base.png')

conv = dict()
# creating a image object 
image = Image.new('RGB', (768, 768), color = 'black')

hyunsikjeong

#!/usr/bin/env sage
from Crypto.Util.number import long_to_bytes

n = 502836922512486610504545362770164087747314568872499828554488035958487618069922372009938568627862332381791785204353412309048442266790788127586913418481611102032369784610186635918107975841710391423008666409824129040501563972923707425783141884753202039153453753743392862691624406109086024607836030202826295630221116437441121382375260821932448574939909495800160786027658225717271401949960794363690329988511853563276529456313673706170640973867577950303263264174744662074209624615772736887075860916876858014327808943244020378093080950653168444374777563212489171657106506007764866226182751595372496526204915222217458440333
c = 4542992230817920623622662202729093420190888652559243976860639953697825392586021006533342245836972027501745167799861363850426811090986182459017530104829121267723198005247073842044128647351222273325585614699334258919290475742633426495057070305887556653427791160755958392266834460356390652210993123440272512962788160444355984837855192511

hyunsikjeong

Play this game by pasting the script in http://www.puzzlescript.net/editor.html

hyunsikjeong

from pwn import *
from ctypes import *
from Crypto.PublicKey import RSA
from Crypto.Util.number import long_to_bytes as l2b, inverse, GCD as gcd
import gmpy2

s = remote("coooppersmith.challenges.ooo", 5000)

s.recvuntil(":")
s.sendline("1" + "0" * 119)

hyunsikjeong

Keybase proof

I hereby claim:

• I am jhs7jhs on github.
• I am rbtree (https://keybase.io/rbtree) on keybase.
• I have a public key whose fingerprint is 3A77 4E51 675A E05C 40A8 AC1F A3C7 8ADB E4F0 C0DC

To claim this, I am signing this object:

hyunsikjeong

{
    "name": "XTerm-like",

    "cursorColor": "#ebebeb",
    "selectionBackground": "#ffffff",

    "background" : "#000000",
    "foreground" : "#ebebeb",

    "black" : "#000000",

hyunsikjeong

from Crypto.Util.number import *
from binascii import unhexlify, hexlify
import gmpy2

from pwn import *

def get_cube():
    sock = remote('crypto.kosenctf.com', 13001)
    n = int(sock.recvuntil('\n')[3:-1].decode())

hyunsikjeong

from Crypto.Util.number import *
from pwn import *

r = remote("crypto.kosenctf.com", 13003)

r.recvuntil("your query: ")
r.sendline('b')

l = r.recvuntil('\n')
c = [int(x) for x in l.split('[')[1].split(']')[0].split(",")]