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In-depth articles on PGP, encryption fundamentals, and operational security. Written for technical readers who want to understand what is actually happening, not just which buttons to press.
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8 min read · 2026-01-12
How PGP works — a plain-English explainer
PGP combines asymmetric and symmetric encryption to send private messages without ever sharing a secret. Here is what actually happens under the hood.
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6 min read · 2026-01-19
Why client-side crypto matters
Server-side "encrypted" services still see your plaintext. Client-side crypto removes the server from the trust boundary entirely. Here is why that distinction is the whole game.
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7 min read · 2026-02-02
Argon2id vs PBKDF2: which key derivation function should you use?
Both stretch a password into an encryption key, but they cost attackers very different amounts of money. Argon2id is the modern default; PBKDF2 is the compatible fallback.
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5 min read · 2026-02-15
How to verify a PGP signature, and why you should
A signature on a release file is only useful if you actually check it. Here is the 30-second workflow, and what each step is really proving.
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4 min read · 2026-03-01
Air-gap mode: what it does, and what it does not
A toggle in the corner of the app blocks every outbound network request. Here is the threat model it covers and the one it does not.
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9 min read · 2026-03-15
Setting up PGP for journalists: a practical 30-minute guide
Sources contact journalists through whatever channel feels safe. PGP is one of the few that survives a subpoena. Here is the minimum setup that actually works.
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5 min read · 2026-04-05
How to encrypt an email with PGP — a 5-minute tutorial
Sending your first encrypted email is faster than most guides make it look. Here is the minimal flow with no software install — just your browser.
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6 min read · 2026-04-12
How to import and verify a public key
Anyone can claim to publish a PGP public key. Verifying it before you encrypt prevents you from sending secrets to the wrong person. Here is the workflow.
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7 min read · 2026-04-19
OpenPGP key types explained: RSA vs Curve25519 vs P-384
Modern OpenPGP supports three key families. Each has different speed, size, and compatibility tradeoffs. Here is how to pick.
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7 min read · 2026-04-26
Backing up PGP keys safely
Lose your private key and your encrypted history is unrecoverable. Steal a careless backup and your encrypted history is exposed. Here is how to back up without compromising either side.