gtank

function cookieClick() {
  var click = new Event("click");
  var goldenCookie = document.getElementById("goldenCookie");
  var bigCookie = document.getElementById("bigCookie");
  if(goldenCookie.offsetWidth > 0 || goldenCookie.offsetHeight > 0) {
    // i can see the cookie!
    goldenCookie.dispatchEvent(click);
  }
  bigCookie.dispatchEvent(click);
  setTimeout(cookieClick, 100);

gtank

Keybase proof

I hereby claim:

• I am gtank on github.
• I am gtank (https://keybase.io/gtank) on keybase.
• I have a public key whose fingerprint is C154 A663 2C22 10EA 005A 4F73 C760 B462 A5D6 AC5C

To claim this, I am signing this object:

gtank

$ cat /usr/lib/systemd/system/tor.service 
[Unit]
Description=Anonymizing overlay network for TCP
After=syslog.target network.target nss-lookup.target
PartOf=tor-master.service
ReloadPropagatedFrom=tor-master.service

[Service]
Type=notify
NotifyAccess=all

gtank

package main

import (
	"crypto/sha256"
	"crypto/tls"
	"encoding/hex"
	"fmt"
	"log"
	"strings"
)

gtank

// RFC 5280 4.1.2.2.  Serial Number
// The serial number MUST be a positive integer assigned by the CA to
// each certificate.  It MUST be unique for each certificate issued by a
// given CA (i.e., the issuer name and serial number identify a unique
// certificate).  CAs MUST force the serialNumber to be a non-negative
// integer.
//
// Given the uniqueness requirements above, serial numbers can be
// expected to contain long integers.  Certificate users MUST be able to
// handle serialNumber values up to 20 octets.  Conforming CAs MUST NOT

gtank

Crypto operations in HS establishment:

GENERATE: service key (must be 1024-bit RSA)
  rend_service_load_keys
    init_key_from_file
      crypto_pk_generate_key

SIGN: ESTABLISH_INTRO cells (once per intro point)
  rend_service_intro_has_opened
    crypto_pk_private_sign_digest

gtank

package test

import (
	"fmt"
	"testing"
)

func TestThing(t *testing.T) {
	// a := uint64(0x07FFFFFFFFFFFFFFF)
	a := uint64(0x1FFF000000000000)

gtank

04000000 uint32 version

00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 32 bytes HashPrevBlock
db4d7a85 b768123f 1dff1d4c 4cece700 83b2d27e 117b4ac2 e31d0879 88a5eac4 32 bytes HashMerkleRoot
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 32 bytes hashReserved
90041358 uint32 nTime
ffff071f uint32 nBits
57120000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 32 bytes nNonce

fd4005 3 byte CompactSize Equihash length { 253 { 0x40 0x05 } } = 0x40 + (0x05 << 8) = 1344

gtank

# Returns (field, curve, scalars, basepoint)
def generate_parameters():
    K = GF(2^255 - 19)
    a = K(-1)
    d = K(-121665/121666)
    base_y = K(4/5)
    base_x = ((1 - base_y^2) / (-1 - d*(base_y^2))).sqrt()

    # Convert Edwards to Montgomery
    A = 2*(a+d)/(a-d)

gtank

#!/bin/bash
set -euxo pipefail

# This transaction is test vector 1 from ZIP243: https://zips.z.cash/zip-0243
curl -H 'content-type: application/json' --data-binary '{"jsonrpc": "2.0", "method": "sendrawtransaction", "params": ["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