Post-quantum archive encryption
Seal an archive so that defeating a single mathematical assumption gets an adversary nothing at all.
Live simulation
The same question the product's break-glass harness asks: hand an adversary a broken assumption and see whether the archive still holds. Take the mechanisms down one at a time.
ARCHIVE SEALED
Nothing broken. Every mechanism must fall before a single byte becomes readable.
What it is
Content is sealed to three independent key-establishment mechanisms and signed by two independent signature schemes. Reading it requires defeating a lattice problem, a coding-theory problem and an elliptic-curve problem.
It invents no cryptography. Every primitive is a NIST or IETF standard, implemented by third parties and used unmodified. What ArkSeal adds is the arrangement, the wire format, and a harness that demonstrates the arrangement holds.
The problem
Someone copies your encrypted archive today. They cannot read it today. They keep it, and they wait.
Rotating keys in 2034 does nothing for a file copied in 2026. Whatever protection that file shipped with is the protection it has forever.
The tool
The format and reference implementation are Apache-2.0. No registration, no telemetry, no feature gating. A closed archival format cannot be sold to anyone thinking in decades — that is not generosity, it is the only structure in which the product is purchasable at all.
What is sold
A term of service, not a durability guarantee. Regulatory filings and retention-horizon determination remain the customer's.