Posted in未分类 Secure Random Generator Field Guide: Entropy, Three Encodings, and Why Math.random() Fails Posted by By xiezixing 2026年8月6日Lead (close-first, ~80 words) If you have ever pasted a Math.random() token into a JWT…
Posted in未分类 Entropy, Not Characters: A Field Guide to the Secure Random Generator Posted by By xiezixing 2026年7月27日The bottom line If you remember one thing from this guide, remember this: a secret…
Posted in未分类 Measuring Cryptographic Strength with an Entropy Calculator Posted by By xiezixing 2026年7月14日Length is not a security metric. Use Min-Entropy to measure how unpredictable a password, key, or token really is — and how long it would take an adversary with 10⁶ to 10¹² guesses/sec to crack it.
Posted in未分类 The One Law of Physics That Explains Why Time Flows Forward Posted by By xiezixing 2026年5月7日The One Law of Physics That Explains Why Time Flows Forward You cannot unscramble an…
Posted in未分类 The One Equation That Sets the Absolute Speed Limit on Every Heat Engine Posted by By xiezixing 2026年4月21日In 1824, a 28-year-old French physicist named Sadi Carnot asked a deceptively simple question: *what…