Technology & Engineering Specifications
At Open Knowledge Inc., security is engineered into the compiler, operating system kernel, filesystem tree, and relational schema—never bolted on as an afterthought. Explore our six core technical monographs from intuitive architectural overview to production Rust, FreeBSD, and PostgreSQL proofs.
1. Overview: Why We Build on Rust 2024, FreeBSD OpenZFS & PostgreSQL 19
Conventional web systems often place dynamic scripts and customer databases on the same public server, creating a fragile structure where a single plugin flaw can expose or encrypt all organizational records. Open Knowledge Inc. replaces that fragility with a strict Two-Tier Isolated Architecture: static-separated web delivery at the edge (ap01.ok.st) and a private-vLAN database vault (db01.ok.st) protected by self-healing OpenZFS storage and mandatory row-level security.
Rust 2024 Memory Safety & Wasmtime WASI 0.2 Component Isolation
Eliminating spatial and temporal memory safety vulnerabilities (70% of historical CVEs per CISA/NSA) at compile time using Rust affine ownership types and capability-based WebAssembly sandboxes.
FreeBSD 15.1 pf Kernel SYNPROXY & OpenZFS 256-Bit Merkle Tree Immutable Storage
Absorbing volumetric TCP SYN floods in the FreeBSD kernel network stack while guaranteeing cryptographic Copy-on-Write block integrity and 0-second ransomware rollback on OpenZFS.
PostgreSQL 19 (db01.ok.st) FORCE ROW LEVEL SECURITY & Private-vLAN Vault
Physical network isolation of db01.ok.st over a private vLAN combined with mandatory session-level FORCE ROW LEVEL SECURITY policies that prevent cross-tenant data leakage even under SQL query logic defects.
FIDO2 / WebAuthn Passkeys & Asymmetric Origin-Bound Authentication
Neutralizing adversary-in-the-middle (AiTM) real-time phishing proxies through P-256 / Ed25519 public-key challenge-response bound strictly to the relying party TLS origin.
DMARC (p=reject), DKIM, SPF, BIMI & DNSSEC Cryptographic Domain Defense
End-to-end cryptographic authentication of corporate email and DNS zone records to prevent domain spoofing, business email compromise (BEC), and cache poisoning.
8-Channel Surface EMG (sEMG) & IMU Japanese Sign Language (JSL) Signal Processing
IPA Mitou-lineage biomedical signal processing combining 8-channel forearm surface electromyography (20–450 Hz bandpass filtering, RMS envelope extraction) with 6-axis IMU kinematics for privacy-preserving JSL recognition.
2. Practical Architecture Comparison: Legacy Monolithic Stack vs. Open Knowledge Stack
| Architectural Dimension | Legacy Dynamic CMS / Monolithic Stack | Open Knowledge 2026 Stack (Rust / ZFS / PG19) |
|---|---|---|
| Web Layer & RCE Risk | Server-side PHP/CMS plugins exposed to CVE-2024-4577 and SQLi on every HTTP request. | Astro Zero-JS Static Site Generation + Rust WASM; zero dynamic server interpreter on public pages. |
| Memory Safety | C/C++ extensions vulnerable to buffer overflows, use-after-free, and data races. | Rust 2024 ownership & borrow checker enforcing compile-time memory safety + Wasmtime WASI 0.2. |
| Database & Multi-Tenancy | Co-located MySQL on web host; a missing WHERE clause leaks all customer records. | Isolated db01.ok.st over private vLAN with PostgreSQL 19 FORCE ROW LEVEL SECURITY. |
| Ransomware & Bit-Rot Defense | Mutable ext4/XFS filesystems where malware can overwrite both live data and mounted backups. | FreeBSD OpenZFS 256-bit Merkle tree checksums + immutable Copy-on-Write snapshots. |
| Authentication & Email Integrity | Password + SMS OTP vulnerable to real-time AiTM phishing; permissive SPF (`~all`). | FIDO2 / WebAuthn origin-bound Passkeys + DMARC (`p=reject`), DKIM 2048-bit, BIMI, and DNSSEC. |
3. Alignment with International & Japanese Statutory Standards
Eliminating Entire Vulnerability Classes by Design
Joint guidance from CISA, NSA, FBI, and international cybersecurity agencies identifies memory-unsafe languages as the root cause of roughly 70% of high-severity vulnerabilities. By standardizing backend services and compile-time SSoT validators on Rust 2024, Open Knowledge Inc. eliminates use-after-free, double-free, and out-of-bounds write classes before deployment.
Phishing-Resistant AAL3 Authentication & Immutable Logs
Our FIDO2/WebAuthn implementation satisfies NIST SP 800-63B Authenticator Assurance Level (AAL) phishing resistance, while our OpenZFS snapshot retention and PostgreSQL 19 audit logging directly fulfill METI's October 2026 Supply Chain Security Evaluation (SCS Star-3 / Star-4) requirements for tamper-evident telemetry and rapid recovery.
4. Production Code & Mathematical Specifications (Rust 2024, FreeBSD pf/ZFS, PG19 & sEMG DSP)
4.1 Rust 2024 + PostgreSQL 19 (`db01.ok.st`) 3-Second Micro-Auth (`ON CONFLICT DO SELECT` & `FORCE RLS`)
Our 3-Second 1-Tap Secure Micro-Auth (WebAuthn Passkey, Google/LINE OIDC via n8n.ok.st, or 1-field Email Magic Link) resolves returning users in sovereign_auth.micro_users using PostgreSQL 19 native uuidv7() and zero-WAL INSERT ... ON CONFLICT DO SELECT, then binds transaction-local FORCE ROW LEVEL SECURITY context:
{`-- PostgreSQL 19 (db01.ok.st): Zero-WAL Idempotent Micro-Auth & Mandatory Row Isolation
INSERT INTO sovereign_auth.micro_users (user_id, provider, external_subject)
VALUES (uuidv7(), $1, $2)
ON CONFLICT (provider, external_subject) DO SELECT
RETURNING user_id, tenant_id;
-- Rust 2024 + SQLx: Mandatory Transaction-Local Tenant Binding on db01.ok.st (10.0.x.x:5432)
use sqlx::{PgPool, Postgres, Transaction};
use uuid::Uuid;
pub async fn begin_isolated_tenant_tx<'a>(
pool: &'a PgPool,
tenant_id: Uuid,
) -> Result, sqlx::Error> {
let mut tx = pool.begin().await?;
sqlx::query("SELECT set_config('app.current_tenant_id', $1, true)")
.bind(tenant_id.to_string())
.execute(&mut *tx)
.await?;
Ok(tx)
}`} 4.2 FreeBSD 15.1 `pf.conf` SYNPROXY & OpenZFS Merkle Snapshot Configuration
{`# /etc/pf.conf on ap01.ok.st / db01.ok.st (FreeBSD 15.1-RELEASE)
set block-policy drop
scrub in all fragment reassemble
block in log all
pass in on $ext_if proto tcp from any to ($ext_if) port { 80, 443 } flags S/SA synproxy state
pass in on $vlan_if proto tcp from 10.0.10.0/24 to 10.0.20.51 port 5432 flags S/SA keep state
# OpenZFS dataset tuning for PostgreSQL 19 on db01.ok.st (8GB ARC + LZ4 + SHA-256 Merkle Tree)
zfs set compression=lz4 checksum=sha256 recordsize=8K logbias=latency zroot/pg19/data
zfs snapshot -r zroot/pg19/data@immutable-hourly-20261029-1000`}4.3 8-Channel Forearm sEMG & 6-Axis IMU Signal Formulation for Japanese Sign Language (JSL)
For each forearm electrode channel c ∈ {1, ..., 8} sampled at f_s = 1000 Hz after a 4th-order Butterworth bandpass filter (20–450 Hz) and 60 Hz power-line notch filter, the sliding Root-Mean-Square (RMS) muscle activation envelope and Waveform Length (WL_c) over window N are computed as:
RMS_c[k] = sqrt( (1 / N) * sum_{i=0}^{N-1} (x_c[k - i])^2 ) | WL_c[k] = sum_{i=1}^{N-1} |x_c[k - i + 1] - x_c[k - i]|
Unlike camera-only vision systems that suffer from finger self-occlusion during rapid JSL lexical transitions, fusing the 8-dimensional sEMG feature vector with 6-axis IMU quaternion trajectories resolves visually ambiguous finger-flexion states while preserving complete visual privacy in medical and welfare rooms.