sintezcs

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!

sintezcs

### Keybase proof

I hereby claim:

  * I am sintezcs on github.
  * I am aminakov (https://keybase.io/aminakov) on keybase.
  * I have a public key ASCq--kQrWDkQ9GrZPpfzxmZK8qMMHxqvlGbp47EjBeCaAo

To claim this, I am signing this object:

sintezcs

<div id="carousel-culloden" class="carousel slide" data-ride="carousel" style="margin:-15px -15px 40px;">
	<!-- Indicators -->
	<ol class="carousel-indicators">
		<li data-target="#carousel-culloden" data-slide-to="0" class="active"></li>
		<li data-target="#carousel-culloden" data-slide-to="1"></li>
	</ol>
	<!-- Wrapper for slides -->
	<div class="carousel-inner">
		<div class="item active activepurple">
			<img src="https://i.imgur.com/ba97uFo.png" alt="Image 0" style="height:145px; width: 275px;"><div class="carousel-caption" style="width: 100% !important; right: 0 !important; left: 0 !important; padding-bottom: 5px! important; bottom: 0 !important; padding-top: 5px !important; background: rgba(86,61,124,0.8) !important;">

sintezcs

<p>
	<img src="https://i.imgur.com/LBkONfA.png" style="height: 165px; width: 275px; margin: -15px -15px 0;">
</p>
<p>
	<span class="label label-success" style="width: 51%; position: relative; top: -10px;" role="button"><strong>p.p.p.n. € 165</strong></span>
</p>
<h2 style="margin-bottom:15px; color:rgba(86,61,124,0.8); margin-top: 2px; font-weight: bold; font-size: 16px; text-align:right;">Executive Room</h2>
<p style="padding-bottom: 10px; text-align:justify;">
	With a spacious living area, these rooms are equipped to meet the needs of the modern traveller.
</p>

sintezcs

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

sintezcs

.dropdown-menu.menu-view {
    background: #fff url('http://path_to_image.com/image.png') center top no-repeat; /* Place link to your logo image here */
    background-size: contain;
    padding-top: 175px; /* Should be greater or equal to logo image height */
}

sintezcs

import time


def retry(error_condition=lambda err: True,
          retry_count=10, retry_timeout=1, progressive_timeout=True):
    """Decorator for retrying function call in case of exception

    You could decorate any function or method with this if you need to
    repeatedly call this method a couple of times with an increasing interval
    in case of some error raised during the method call.

sintezcs

import threading
import time


def rate_limited(max_per_second):
    lock = threading.Lock()
    min_interval = 1.0 / max_per_second

    def decorate(func):
        last_time_called = time.perf_counter()

sintezcs

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

brew install python

pip3 install ipython[notebook]

ipython notebook

http://127.0.0.1:8888