H33 Custody › Identity Custody › Post-Quantum Authentication
Identity Custody · Solution
If your authentication breaks in 2030, you'll wish you'd switched by 2025.
Quantum-vulnerable cryptography still secures most of the internet's authentication infrastructure. H33 Custody uses post-quantum primitives where it matters — identity, credentials, and authority that need to outlast the current cryptographic landscape.
Why authentication has to think about quantum now
Most public-key cryptography securing today's internet — RSA, ECDSA, and the elliptic-curve schemes underlying everything from TLS to Bitcoin — is vulnerable to sufficiently capable quantum computers. The schemes will be replaced before that happens. The credentials issued before the replacement won't all migrate cleanly. Identity infrastructure built for the current landscape is, in a real sense, building for an expiry date.
Post-quantum from day one
H33 Custody uses post-quantum primitives in the substrate from the start — for identity verification, credential binding, document signing, and authority chains. Not as a future upgrade. Not as a research preview. As the default.
Hybrid where it makes sense
Where compatibility with existing infrastructure matters, H33 Custody uses hybrid constructions — combining post-quantum primitives with current ones so verification is valid under either assumption. You don't have to choose between today's tooling and tomorrow's resistance.
Identity that outlasts the cryptographic landscape
An identity registered today will verify the same way in two decades, even after the current public-key infrastructure is deprecated. The same is true for credentials, authority records, and the documents you place in custody.
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Where post-quantum primitives appear
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Identity verification
Identity registration and verification bound to post-quantum primitives.
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Authentication tokens
Authentication sessions and tokens bound to post-quantum credentials.
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Document signing
Documents in custody are signed with post-quantum schemes for long-term verifiability.
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Authority chains
Delegation and authority records use post-quantum schemes to remain verifiable decades later.
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Beneficiary designation
Beneficiary designations and succession records use post-quantum primitives for multi-decade durability.
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Audit records
Audit and custody records use post-quantum schemes so evidence holds up at any future point.