On top of BSA — an authentication engine that stores no password — sit desktop sign-in and unified credential management. They run on the infrastructure you already have.
See how the login worksA structure that establishes trust with no password, no central server and no master key — a pipeline that leaves nothing behind, from material to ledger.
See how the login worksFor the core systems of finance, government and enterprise — meeting regulatory duty and user experience at the same time.
Talk to usA method recognised by international bodies. Third-party verification, not a company's claim.
See every standardHow SIGONE's BSA — Blockchain Secure Authentication — establishes trust without any stored secret such as a password, an OTP or a token, and how the four-layer chain of trust works.
BSA does not rely on a stored secret. Trust is established through one-time material and keys — created fresh for every authentication and destroyed immediately — plus distributed verification by multiple randomly selected nodes. The one-way chain of trust runs material (MIRC) → key (OTAK) → verification (MDV) → ledger (Hybrid DLT): each stage consumes what the previous one produced and leaves nothing behind. There is no asset to steal and no single point to seize.
Rather than blocking each attack technique in turn, BSA sets out to remove from the structure the premises they all rely on.
So long as a fixed asset exists that can be stored, reused or stolen — a password, a key — the attacks below keep working.
Attacks this enables · Phishing · credential stuffing · password database theft · man-in-the-middle replay
When verification concentrates at one point, seizing that single point is enough to control every authentication result.
Attacks this enables · Verification server compromise · insider tampering · single point of failure
No fixed asset is left behind to store, reuse or steal. Material is combined at random for every request (MIRC), and the key is generated per request and destroyed at once (OTAK).
Verification and recording are distributed so that seizing one point cannot decide the whole outcome. Multiple random nodes rule by consensus (MDV), and the record is split across public and private chains (Hybrid DLT).
Factors → one-time key → distributed verification → record. Each stage uses only what it needs, and no secret is handed from one stage to the next — a one-way structure.
For each request a subset is selected and combined from distinct factor sets — possession, device, location, knowledge and biometrics. Even for the same user the combination differs request to request, so nothing depends on a fixed credential.
No fixed credential is kept
A one-time key of more than 300 characters is generated and used for that request alone. Once authentication completes it is destroyed at once and is never reused by a later request.
Destroyed right after authentication
Verification authority is not concentrated in one place; several nodes are drawn at random for every request. The selected nodes verify in parallel and settle the result by the consensus rule.
No single point of verification
The public chain and private chain share the work and record the process and its outcome. The distributed record keeps the authentication history traceable and checkable after the fact.
Traceable history · checkable afterwards
BSA's defence rests on structure, not probability. For an attack to work it would need an asset or a point that does not exist.
Forging the material would mean matching possession, device, location and knowledge or biometric conditions all at once — plus the random combination drawn at that exact request. Securing one factor is worthless without the rest and that moment's combination.
The key lives only for the span of one request. By the time an attacker has it, it is already destroyed and the next request uses a different one. There is nothing to reuse.
Verification is distributed across multiple randomly chosen nodes. No node can be named in advance or decide the result alone, and partial control is nullified by consensus.
The result is preserved as an immutable, transparent Hybrid DLT record, so the fact of authentication can be checked and proven later. Neither the biometric original nor a fixed password is ever stored.
Detailed specifications — consensus thresholds, key length, cryptographic algorithms, entropy sources — are supplied separately as a technical specification on request for security review.