karpathy

"""
The most atomic way to train and run inference for a GPT in pure, dependency-free Python.
This file is the complete algorithm.
Everything else is just efficiency.

@karpathy
"""

import os       # os.path.exists
import math     # math.log, math.exp

arianvp

Native Secure Enclave backed ssh keys on MacOS

It turns out that MacOS Tahoe can generate and use secure-enclave backed SSH keys! This replaces projects like https://github.com/maxgoedjen/secretive

There is a shared library /usr/lib/ssh-keychain.dylib that traditionally has been used to add smartcard support to ssh by implementing PKCS11Provider interface. However since recently it also implements SecurityKeyProivder which supports loading keys directly from the secure enclave! SecurityKeyProvider is what is normally used to talk to FIDO2 devices (e.g. libfido2 can be used to talk to your Yubikey). However you can now use it to talk to your Secure Enclave instead!

dougg0k

# They may appear as warning if opening vscode through terminal, but they work.

# Never use more than one --enable-features and --disable-features as it can overwrite the previous.
# This was built using Arch Linux (Wayland) if some flags / features are not compatible with other OS, up to whoever uses, to remove them.

# There are two threads that if ever get implemented into vscode, could bring improvements to the usage experience.
# https://github.com/microsoft/vscode/issues/27378
# https://github.com/microsoft/vscode/issues/221145

# CPU

marvinhagemeister

import { ServerResponse, type IncomingMessage } from "node:http";
import { Http2ServerRequest, Http2ServerResponse } from "node:http2";
import { isArrayBufferView } from "node:util/types";

const INTERNAL_BODY = Symbol("internal_body");

const GlobalResponse = Response;
globalThis.Response = class Response extends GlobalResponse {
  [INTERNAL_BODY]: BodyInit | null | undefined = null;

ftk

# To generate mitm cert and key:
# openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -passout pass:"third-wheel" -subj "/C=US/ST=private/L=province/O=city/CN=hostname.example.com"
# see: https://github.com/campbellC/third-wheel

[package]
name = "http-ytproxy"
version = "0.1.0"
edition = "2021"

nicolas17

.global _main
.extern _putchar

.align 4

_main:
    ; prolog; save fp,lr,x19
    stp x29, x30, [sp, #-0x20]!
    str x19, [sp, #0x10]

cdussud

-- DateDiff function that returns the difference between two timestamps in the given date_part (weeks, months, etc) as an integer
-- This behaves like the DateDiff function in warehouses like Redshift and Snowflake, which count the boundaries between date_parts
CREATE OR REPLACE FUNCTION datediff (date_part VARCHAR(30), start_t TIMESTAMP, end_t TIMESTAMP)
  RETURNS INT AS $diff$

  DECLARE
    years INT = 0;
    days INT = 0;
    hours INT = 0;
    minutes INT = 0;  

andy-thomason

Genomics - A programmer's guide.

Andy Thomason is a Senior Programmer at Genomics PLC. He has been witing graphics systems, games and compilers since the '70s and specialises in code performance.

https://www.genomicsplc.com

est31

Trying to deploy WPA3 on my home network

Introduction

Recently, news broke about a new possible offline attack on WPA2 using PMKID. To summarize the attack, WPA2 protected APs can end up broadcasting PMKID values which can then be used to offline-brute-force the password.

These PMKID values are computed this way:

PMKID = HMAC-SHA1-128(PMK, "PMK Name" | MAC_AP | MAC_STA)

jlblancoc

Run the following in the terminal:

Install the gcc-7 packages:

sudo apt-get install -y software-properties-common
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install g++-7 -y

Set it up so the symbolic links gcc, g++ point to the newer version: