Gpg
Posts tagged with Gpg.
23 Nov 2025
Mudança na assinatura GPG do meu website
Não me lembro exatamente mas acredito que a pelo menos dois anos eu assino as páginas HTML do meu site com GPG, faço isso para praticar soberania, autenticidade até mesmo promover ferramentas que auxiliam na privacidade.
Inicialmente eu deixava a assinatura GPG embutida no próprio conteúdo HTML, por exemplo:
<!--
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
- -->
<!doctype html>
<html lang=en>
<head>
<meta charset=utf-8>
<meta http-equiv=X-UA-Compatible content="IE=edge">
<meta name=viewport content="width=device-width,initial-scale=1">
<meta property="og:title" content="What I’d Tell My 23-Year-Old Self">
<meta property="og:description" content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<meta property="og:url" content="https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/">
<meta property="og:site_name" content="Adler Medrado's corner of the web">
<meta property="og:type" content="article">
<meta property="og:image" content="/images/default-og-image.png">
<meta name=twitter:card content="summary_large_image">
<meta name=twitter:title content="What I’d Tell My 23-Year-Old Self">
<meta name=twitter:description content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<meta name=twitter:image content="/images/default-og-image.png">
<title>What I’d Tell My 23-Year-Old Self</title>
<meta name=description content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<link rel=author href=/humans.txt>
<link rel=icon type=image/png href=/images/favicon.png>
<link rel=canonical href=https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/>
<link href=/css/styles.css rel=stylesheet>
</head>
<body>
<header class=glitch-zone>
<nav class=navbar role=navigation aria-label="Main Navigation">
<div class=navbar_left>
<a href=/ class=h-card rel=me>
<strong>
Adler Medrado
<span class=cursor-blink>|</span>
</strong>
</a>
</div>
<div class="navbar_right navbar_right_animated">
<a href=/posts>posts</a>
<a href=/missives>missives</a>
<a href=/now>what am i doing now</a>
<a href=/uses>what am i using</a>
</div>
</nav>
</header>
<main>
<article class=missive>
<h1 class="text-4xl font-bold mb-4">What I’d Tell My 23-Year-Old Self</h1>
<p class="text-sm text-gray-500 mb-6">26 Sep 2025</p>
<div class=prose>
<p>If I could whisper to my 23-year-old self, I’d tell him this:</p>
<ul>
<li>Stop wasting time worrying about what people think.</li>
<li>Pour your energy into building, into creating, into making something that’s yours.</li>
<li>And never forget: everything is impermanent — every victory, every failure, every storm.</li>
</ul>
<p>That truth alone is enough to keep you moving forward.</p>
</div>
</article>
<div class=post-tags>
<p>
<strong>Tags:</strong>
<a href=/tags/thoughts>thoughts</a>
</p>
</div>
</main>
<footer class=glitch-zone role=contentinfo>
<div class=footer-content>
<div class=copyright>
<p>
<small>© 1996-2025 Adler Medrado</small>
</p>
</div>
<div class=gpg_signed_info>
<p>
All pages on this website are PGP signed.
Import my
<a href=/pub-key.asc aria-label="Download my PGP public key">public key</a>
and check with
<em>curl https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/ | gpg --verify</em>
</p>
<p>
<em>Privacy policy: this website employs no tracking.</em>
</p>
<p>
<span class=badge-a-plus>
<a href="https://developer.mozilla.org/en-US/observatory/analyze?host=adlermedrado.com.br" aria-label="Mozilla Observatory Security Rating: A+">A+</a>
</span>
<span class=badge-description>Mozilla Observatory Security Rating</span>
</p>
</div>
</div>
</footer>
<script>
(function() {
function c() {
var b = a.contentDocument || a.contentWindow.document;
if (b) {
var d = b.createElement('script');
d.innerHTML = "window.__CF$cv$params={r:'9a31943f6eaad8cb',t:'MTc2MzkxMDQ3Ng=='};var a=document.createElement('script');a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";
b.getElementsByTagName('head')[0].appendChild(d)
}
}
if (document.body) {
var a = document.createElement('iframe');
a.height = 1;
a.width = 1;
a.style.position = 'absolute';
a.style.top = 0;
a.style.left = 0;
a.style.border = 'none';
a.style.visibility = 'hidden';
document.body.appendChild(a);
if ('loading' !== document.readyState)
c();
else if (window.addEventListener)
document.addEventListener('DOMContentLoaded', c);
else {
var e = document.onreadystatechange || function() {};
document.onreadystatechange = function(b) {
e(b);
'loading' !== document.readyState && (document.onreadystatechange = e, c())
}
}
}
})();
</script>
</body>
</html>
<!--
-----BEGIN PGP SIGNATURE-----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=1D7N
-----END PGP SIGNATURE-----
-->
Sabe aquela sensação de que algo não está certo? Pois é, ter a assinatura embutida nos meus arquivos HTML sempre me incomodou um pouco. Apesar de ser super prático validar a assinatura com um comando simples, tipo curl https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/ | gpg —verify, a ideia de ter a assinatura “colada” no arquivo original me incomodava. Parecia que o arquivo não era mais o original, né?
23 Nov 2025
Update on the GPG Signing of My Website
I don’t remember exactly when I started, but for at least two years I’ve been signing the HTML pages on my website with GPG. I do this as a way to practice sovereignty, authenticity, and to promote tools that help protect privacy.
At first, I kept the GPG signature embedded directly in the HTML content, for example:
<!--
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
- -->
<!doctype html>
<html lang=en>
<head>
<meta charset=utf-8>
<meta http-equiv=X-UA-Compatible content="IE=edge">
<meta name=viewport content="width=device-width,initial-scale=1">
<meta property="og:title" content="What I’d Tell My 23-Year-Old Self">
<meta property="og:description" content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<meta property="og:url" content="https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/">
<meta property="og:site_name" content="Adler Medrado's corner of the web">
<meta property="og:type" content="article">
<meta property="og:image" content="/images/default-og-image.png">
<meta name=twitter:card content="summary_large_image">
<meta name=twitter:title content="What I’d Tell My 23-Year-Old Self">
<meta name=twitter:description content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<meta name=twitter:image content="/images/default-og-image.png">
<title>What I’d Tell My 23-Year-Old Self</title>
<meta name=description content="If I could whisper to my 23-year-old self, I’d tell him this:
Stop wasting time worrying about what people think.
Pour your energy into building, into creating, into making something that’s yours.
And never forget: everything is impermanent — every victory, every failure, every storm.
That truth alone is enough to keep you moving forward.">
<link rel=author href=/humans.txt>
<link rel=icon type=image/png href=/images/favicon.png>
<link rel=canonical href=https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/>
<link href=/css/styles.css rel=stylesheet>
</head>
<body>
<header class=glitch-zone>
<nav class=navbar role=navigation aria-label="Main Navigation">
<div class=navbar_left>
<a href=/ class=h-card rel=me>
<strong>
Adler Medrado
<span class=cursor-blink>|</span>
</strong>
</a>
</div>
<div class="navbar_right navbar_right_animated">
<a href=/posts>posts</a>
<a href=/missives>missives</a>
<a href=/now>what am i doing now</a>
<a href=/uses>what am i using</a>
</div>
</nav>
</header>
<main>
<article class=missive>
<h1 class="text-4xl font-bold mb-4">What I’d Tell My 23-Year-Old Self</h1>
<p class="text-sm text-gray-500 mb-6">26 Sep 2025</p>
<div class=prose>
<p>If I could whisper to my 23-year-old self, I’d tell him this:</p>
<ul>
<li>Stop wasting time worrying about what people think.</li>
<li>Pour your energy into building, into creating, into making something that’s yours.</li>
<li>And never forget: everything is impermanent — every victory, every failure, every storm.</li>
</ul>
<p>That truth alone is enough to keep you moving forward.</p>
</div>
</article>
<div class=post-tags>
<p>
<strong>Tags:</strong>
<a href=/tags/thoughts>thoughts</a>
</p>
</div>
</main>
<footer class=glitch-zone role=contentinfo>
<div class=footer-content>
<div class=copyright>
<p>
<small>© 1996-2025 Adler Medrado</small>
</p>
</div>
<div class=gpg_signed_info>
<p>
All pages on this website are PGP signed.
Import my
<a href=/pub-key.asc aria-label="Download my PGP public key">public key</a>
and check with
<em>curl https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/ | gpg --verify</em>
</p>
<p>
<em>Privacy policy: this website employs no tracking.</em>
</p>
<p>
<span class=badge-a-plus>
<a href="https://developer.mozilla.org/en-US/observatory/analyze?host=adlermedrado.com.br" aria-label="Mozilla Observatory Security Rating: A+">A+</a>
</span>
<span class=badge-description>Mozilla Observatory Security Rating</span>
</p>
</div>
</div>
</footer>
<script>
(function() {
function c() {
var b = a.contentDocument || a.contentWindow.document;
if (b) {
var d = b.createElement('script');
d.innerHTML = "window.__CF$cv$params={r:'9a31943f6eaad8cb',t:'MTc2MzkxMDQ3Ng=='};var a=document.createElement('script');a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";
b.getElementsByTagName('head')[0].appendChild(d)
}
}
if (document.body) {
var a = document.createElement('iframe');
a.height = 1;
a.width = 1;
a.style.position = 'absolute';
a.style.top = 0;
a.style.left = 0;
a.style.border = 'none';
a.style.visibility = 'hidden';
document.body.appendChild(a);
if ('loading' !== document.readyState)
c();
else if (window.addEventListener)
document.addEventListener('DOMContentLoaded', c);
else {
var e = document.onreadystatechange || function() {};
document.onreadystatechange = function(b) {
e(b);
'loading' !== document.readyState && (document.onreadystatechange = e, c())
}
}
}
})();
</script>
</body>
</html>
<!--
-----BEGIN PGP SIGNATURE-----
iQIzBAEBCAAdFiEEB9cP28xEbBnKQwLObV8aePHcNh0FAmjpMJEACgkQbV8aePHc
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hrBC0yUuGqyCu8ZflghIF2mEVex5uHBCB5SFeQyPqfLA9erFEAPoWQ3b6gcKNiKM
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eorexF2SsHRhueXtet892ICVJuWrZtdN401YhqhLWu8oL6ORrMuQv4ecHRPuk08k
lrZA5atOssG02ghKLd0ITC65R6rEe/Jk3u6oRXYinRKUHvtpFgSQcgVqzU0kbnFF
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TTWa4NHITlvBOcnmH49mxHSc99vYu0/bSKm8qY8PiZiGXq+u+36X4/1W/A+oXACn
Ao9G0Ljt9bXN7/QGcrb8BYiC+1rgmcMOrGmx+dtbwzfJhkITn6QjykcKFRg+PEIO
Kkv3c6C17+Pz6LIPQe6I//V3LYSvUiMY8lGLuM/C/nvD5QPfMlQ=
=1D7N
-----END PGP SIGNATURE-----
-->
You know that feeling when something just doesn’t sit right? Yeah, having the GPG signature embedded inside my HTML files always bothered me a little.
Sure, it was super convenient to validate everything with a simple command like
curl https://adlermedrado.com.br/missives/what-id-tell-my-23-year-old-self/ | gpg --verify,
but the idea of having the signature “glued” to the original file just felt wrong.
It was like the file wasn’t really the original anymore, you know?
10 May 2025
An open-source project called Deep-Live-Cam is gaining traction on GitHub — and for good reason.
With just a single still image, it can mimic anyone’s face in a live video call. In real-time. Running locally. No cloud required.
The implication is clear: you can no longer trust a video call at face value.
So here’s the question: how do we verify identity in a world where faces can be forged on demand?
10 May 2025
Um projeto open-source chamado Deep-Live-Cam está chamando atenção no GitHub. E com razão.
Com apenas uma imagem estática, ele consegue simular o rosto de qualquer pessoa em tempo real, dentro de uma chamada de vídeo. Tudo isso rodando localmente. Sem nuvem. Sem limites.
A consequência é direta: não dá mais pra confiar em uma chamada de vídeo.
E isso levanta a pergunta inevitável: como validamos a identidade num mundo onde rostos podem ser forjados ao vivo?
27 Apr 2025
Por que você deveria começar a usar GPG agora
Se você ainda não utiliza GPG para assinar ou criptografar seus arquivos e mensagens, está na hora de repensar isso. Não é apenas sobre parecer um hacker de filme dos anos 90 — é sobre proteger sua comunicação e identidade digital em um mundo cada vez mais hostil.
🔐 O que é GPG?
GPG (GNU Privacy Guard) é uma implementação livre do padrão OpenPGP. Ele permite que você crie pares de chaves criptográficas para assinar digitalmente arquivos e mensagens, além de criptografá-los para garantir confidencialidade. É uma ferramenta essencial para quem leva a sério a segurança digital.
27 Apr 2025
Why You Should Start Using GPG Now
If you’re not using GPG to sign or encrypt your files and messages yet, it’s time to reconsider. It’s not just about looking like a 90s movie hacker — it’s about protecting your communication and digital identity in an increasingly hostile world.
🔐 What is GPG?
GPG (GNU Privacy Guard) is a free implementation of the OpenPGP standard. It allows you to create cryptographic key pairs to digitally sign files and messages, as well as encrypt them to ensure confidentiality. It’s an essential tool for anyone serious about digital security.
13 Oct 2024
Yesterday, I published a blog post introducing my new open-source project, ShadowData.
This post is just to inform anyone interested that I have made some updates today.
New Features Added to the Project:
- Email address anonymization
- Phone number anonymization
- Symmetric cryptography for encryption and decryption
- Minor improvements to tests and code quality
You can look the code at the Github repository.
See you.
12 Oct 2024
I am deeply concerned about how to handle sensitive data in the projects I work on. Nowadays, there are laws in various countries addressing this issue, and the topic becomes increasingly important as time goes on.
Therefore, I decided to create a Python library that can help me deal with scenarios where it is necessary to process data to prevent any individual from being identified if the information is accessed. The library also handles data transformations, encryption, and the detection of sensitive personal data.
07 Jan 2024
Há alguns meses eu reformulei este site, eu estava usando wordpress e não estava
muito feliz com isso, então decidi usar um gerador de páginas estáticas, nesse caso o Hugo.
No passado eu já utilizei o Pelican, o Jekyll e o Dangolino,
este último era uma ferramenta criada por mim, mas que descontinuei depois de algum tempo.
Se não me engano, há posts aqui falando sobre eles.
Por que assinar as páginas?
Eu vejo a criptografia como um mecanismo de defesa, acredito que as pessoas devem
criptografar tudo, para tentar garantir segurança, privacidade e autenticidade, entre outras coisas.