"Finite Field Arithmetic." Chapter 20D: "Litmus" Errata: Support for Nested Clearsigned Texts.

This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]

"Finite Field Arithmetic." Chapter 20C: Support for 'Clearsigned' GPG texts in "Litmus."

This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]

"Finite Field Arithmetic." Chapter 20B: Support for Selected Ancient Hash Algos in "Litmus."

This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]

"Finite Field Arithmetic." Chapter 20: "Litmus", a Peh-Powered Verifier for GPG Signatures.

This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]

The Boneyard.

Update: As of 26 Nov 2019, all of the auction items in my boneyard have been sold and sent to their purchasers. I have been asked to catalogue certain contents of my machine boneyard which are due to change hands on account of imminent liquidations of two operations in which I took part. The items […]

Logotron Genesis.

Aug. 2021 Update #5 : billymg fixed broken chan list box reflow in certain browsers. Aug. 2021 Update #4 : billymg’s current-channel highlighting fix; and channel selector table can now reflow to fit screen width. Aug. 2021 Update #3 : Allow marking certain channels as archived to improve DB performance. Aug. 2021 Update #2 : […]

"M" Performance... Pessimizations! or: SSE is a Scam.

This article is a continuation of the M series. The vpatch given below entirely re-implements the TLB (MMU) of M to use SIMD instructions from the AMD64 SSE2 set. Whereas previously TLB entries were kept in memory and searched iteratively, now we keep the Tags (3 byte each) sliced into three XMM registers, and search […]

"M" Performance Optimizations.

This article is a continuation of the M series. The vpatch given below speeds up the execution of M by approximately 30% (as measured by the Dhrystone benchmark.) It implements separate single-entry TLB caches for reads and writes; a set of fastpath exception handlers; and several other minor optimizations. You will need: A Keccak-based VTron […]

"M" Genesis.

Current Table of Contents: M is a MIPS-III system emulator, written purely in AMD64 assembly to make optimal use of commonplace iron. As discussed previously. M will run lightly-modified Linux kernels with strict logical isolation vs. the host (and vs. any other instances of itself.) That is, it in fact does exactly what e.g. QEMU […]

“Finite Field Arithmetic.” Chapter 19: Peh Tuning and Demo Tapes.

This article is part of a series of hands-on tutorials introducing FFA, or the Finite Field Arithmetic library. FFA differs from the typical “Open Sores” abomination, in that — rather than trusting the author blindly with their lives — prospective users are expected to read and fully understand every single line. In exactly the same […]