§From HTTPS to Bitcoin: How mathematics protects self-determination

von Alien Investor

#Cryptography #Privacy #Bitcoin #Freedom #Encryption #Security #Sovereignty #Cypherpunks

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„Whoever controls their keys, controls their assets — whether those are messages, documents, or private keys for Bitcoin.“

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§Cryptography in Everyday Life

Cryptography sounds like rocket science — but it has long been part of everyday life.

Whenever you visit a website with “https,” use Signal, or send Bitcoin, mathematics is running in the background.

It ensures that no one can secretly read your data or manipulate it.

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§Symmetric and Asymmetric Cryptography

Fundamentally, there are two major areas: symmetric and asymmetric cryptography.

With symmetric methods, both sides encrypt and decrypt using the same secret key. This is fast and efficient.

But it creates a problem: How do you exchange this key securely without it being intercepted?

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§The Asymmetric Solution

Asymmetric cryptography solves this by using a key pair.

There is a public key, which anyone is allowed to see. And there is a private key, which should never leave your device.

This allows you to encrypt messages, verify signatures — or unambiguously assign Bitcoin transactions to an address.

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§Cryptography and Power

Things get interesting where cryptography meets power.

States, banks, and corporations would like access to everything — often citing “your safety” as the reason.

They fear the loss of control that comes with true privacy.

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§A Tool for Self-Determination

Strong encryption turns the tables.

Suddenly, the individual can effectively protect data, money, and communication from external access.

That is why cryptography is not just technology. It is a tool for self-determination.

Whoever controls their keys, controls their assets — whether those are messages, documents, or private keys for Bitcoin.

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§🧰 Tools for True Owners (Affiliates — Support at No Extra Cost)

Tools I use myself — for Bitcoin self-custody and digital sovereignty:

📕 Alien Investor Guides: My own eBook “GrapheneOS: Android in the Surveillance Age” — the complete step-by-step guide to hardening your phone against the surveillance state. 👉 https://alien-investor.org/buecher

💥 21bitcoin: Bitcoin-only app from Europe, ideal for DCA and stacking sats regularly — no shitcoins. Use code ALIENINVESTOR for a permanent 0.2 percentage point fee reduction on instant and savings plan purchases. 👉 https://alien-investor.org/21bitcoin

₿ BitBox: Hardware wallet for secure self-custody. I use the BitBox — available as the classic BitBox02 and the new BitBox for iPhone (Nova). Use code ALIENINVESTOR for 5% off. 👉 https://alien-investor.org/bitbox

🛡️ Proton: Swiss all-round protection for email, VPN, and cloud — privacy-first, no Big Tech dependency. 👉 https://alien-investor.org/proton

Disclaimer: Some of these links are affiliate links. If you use them, you support my work at no extra cost to you. Thank you!

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Money, power, Bitcoin — and OPSEC. I write about financial sovereignty, privacy, and cybersecurity in a world built on control. More at alien-investor.org (German only) 👽