New stuff 2017-01-10 Loup Vaillant tag:loup-vaillant.fr/ A SOLID Load of Bull tag:http://loup-vaillant.fr/articles/solid-bull 2025-12-31 The so called SOLID "principles" are not nearly as useful as their reputation suggest. Not that surprising, considering their origins. Good, Fast, Cheap: Pick 3 or Get None tag:http://loup-vaillant.fr/articles/good-fast-cheap 2025-01-05 Common wisdom says the only way to cheap software is to skimp on quality or performance. On the contrary, quality and performance are requirements for cheap software. Monocypher 4: The Clean Break tag:http://loup-vaillant.fr/articles/monocypher-4 2023-09-01 How a paid assignment had me reconsider Monocypher's API, leading to sweeping changes and simplifications. Fixing the TPM: Hardware Security Modules Done Right tag:http://loup-vaillant.fr/articles/hsm-done-right 2023-08-18 The way the TPM is done leads to bloat. The TKey shows a better way. The Source of Readability tag:http://loup-vaillant.fr/articles/source-of-readability 2023-08-04 Readability is more objective than you'd think Cryptography is not Magic tag:http://loup-vaillant.fr/articles/crypto-is-not-magic 2020-07-25 Crypto is often treated like a black art only anointed experts can hope to wield safely. It's not. There are laws, and we can learn them. Surrounded by Elligators: Implementing Crypto With Nothing to Compare to tag:http://loup-vaillant.fr/articles/implementing-elligator 2020-04-15 How I implemented Elligator mappings from the original paper, with almost no other reference. Cofactor Explained: Clearing Elliptic Curves' dirty little secret tag:http://loup-vaillant.fr/tutorials/cofactor 2020-04-07 Efficient elliptic curves tend not to have a prime order. This discusses the problems this causes, and the solutions. 128 Bits of Security and 128 Bits of Security: Know the Difference tag:http://loup-vaillant.fr/tutorials/128-bits-of-security 2020-01-24 Depending on whether we talk about ciphers and hashes, "bits of security" don't really mean the same thing. This explains the differences, and how it might affect the security of your cryptographic systems. Fast Multiplication with Slow Additions tag:http://loup-vaillant.fr/articles/after-your-project-is-done 2018-08-20 Public key cryptography often need fast scalar multiplication over a group with pretty slow additions. This explains the tricks. What is Left to do After your Open Source Project is Done tag:http://loup-vaillant.fr/articles/after-your-project-is-done 2018-03-12 Hint: loads. How I Implemented my Own Crypto tag:http://loup-vaillant.fr/articles/implemented-my-own-crypto 2017-08-03 Despite advice to the contrary, I have implemented my own crypto for serious use. Here's how. Monocypher tag:http://loup-vaillant.fr/projects/monocypher 2017-07-19 Monocypher 1.0 is out! Now ready for production. The Programmer's Ring tag:http://loup-vaillant.fr/projects/articles/programming-ring 2017-03-03 I had a ring made for me, to represent my trade. The design of Poly1305 tag:http://loup-vaillant.fr/tutorials/poly1305-design 2017-01-29 Poly1305 is a state of the art one time authenticator. Let's take a look. The design of Chacha20 tag:http://loup-vaillant.fr/tutorials/chacha20-design 2017-01-10 Chacha20 is a secure, fast, and amazingly simple encryption algorithm. Let's take a look.