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# cryptography

Discussions on encryption, hashing, ciphers, and cryptographic protocols.

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98 Bytes That Prove Your Document Existed

98 Bytes That Prove Your Document Existed

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8 min read
I Shipped a Broken Consistency Proof Verifier. Here's How I Found Out.

I Shipped a Broken Consistency Proof Verifier. Here's How I Found Out.

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9 min read
Quantum cryptography-Kyber Algorithm example

Quantum cryptography-Kyber Algorithm example

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13 min read
Build a Complete PKI from Scratch in Node.js

Build a Complete PKI from Scratch in Node.js

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14 min read
X.509 Beyond Trust: Weaponizing Certificate Extensibility Without Breaking TLS

X.509 Beyond Trust: Weaponizing Certificate Extensibility Without Breaking TLS

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2 min read
Userland Authority: How Non-Root Termux Can Mint TLS Identities and Expose Hidden Trust Gaps

Userland Authority: How Non-Root Termux Can Mint TLS Identities and Expose Hidden Trust Gaps

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2 min read
I Entered a Fake CVV — Here’s Why the Bank Immediately Rejected It

I Entered a Fake CVV — Here’s Why the Bank Immediately Rejected It

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3 min read
The First Zero-Knowledge Proof of AI Safety Judgment

The First Zero-Knowledge Proof of AI Safety Judgment

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10 min read
How We Built Multi-Modal Screen Detection for Cryptographic Evidence Capture: VeraSnap

How We Built Multi-Modal Screen Detection for Cryptographic Evidence Capture: VeraSnap

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16 min read
Recovery codes… Or just one recovery code?

Recovery codes… Or just one recovery code?

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2 min read
Beyond Encryption: Designing a Tamper-Evident State Engine

Beyond Encryption: Designing a Tamper-Evident State Engine

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3 min read
A Product Page Erased $285 Billion. Here's What the Audit Trail Should Have Captured.

A Product Page Erased $285 Billion. Here's What the Audit Trail Should Have Captured.

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8 min read
Building a Cryptographic Flight Recorder for Algorithmic Trading: VCP v1.1 Deep Dive with Python, TypeScript, and MQL5

Building a Cryptographic Flight Recorder for Algorithmic Trading: VCP v1.1 Deep Dive with Python, TypeScript, and MQL5

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29 min read
VeraSnap Building a Cryptographic Evidence Capture App for Android with Kotlin, CameraX, and Hardware-Backed Security

VeraSnap Building a Cryptographic Evidence Capture App for Android with Kotlin, CameraX, and Hardware-Backed Security

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13 min read
VCP v1.1: Building Cryptographic Audit Trails for AI Trading Systems After the 2026 Silver Crash

VCP v1.1: Building Cryptographic Audit Trails for AI Trading Systems After the 2026 Silver Crash

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20 min read
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