Threshold Cryptography Products For The Real World


Sepior has patented essential techniques to implement advanced threshold cryptographic solutions for emerging online services. The same underlying technology can be purposed to address a wide range of use cases and associated market needs.

Currently, Sepior offers the following threshold-cryptography products:

  • Sepior™ Threshold KMS, Blockchain Ledger Security

  • Sepior™ ThresholdSig, Wallet Security

  • Sepior™ Threshold KMaaS, White Label Service for CSPs

Other Threshold Cryptography Products?

  • Do you have a need for threshold cryptographic solutions for other use cases? Let us know, as we may be able to assist you.


Sepior Threshold KMS

Sepior is unleashing the broader potential of private blockchains by enabling flexible, fine grained control over who has access to review and approve smart contracts and specific content posted on the blockchain using Sepior™ Threshold KMS for off-chain encryption key management.

  • Control the privacy and confidentiality of ledger data via threshold cryptography

  • Works with any blockchain technology

  • Fine grained control over who has access to specific fields of content on the blockchain, and the freedom to modify policies at any time, on a per-user or group of users basis

  • Decreased risk of user access fraud through the ability to revoke keys and re-encrypt data under a new key

  • Eliminate or minimize the number of channels required with Hyperledger Fabric for simplicity and greater scale

  • Potential to support multi-party threshold and quorum approvals for smart contract signatures

  • Dramatically reduced potential for key theft by never producing a whole key on any key server, at any time.


Sepior ThresholdSig

Sepior is redefining the gold standard for cryptocurrency wallet security with the introduction of Sepior™ ThresholdSig.

  • Institutional-grade wallet security

  • Advanced security using multiple signatures

  • Operational simplicity of a single key

  • Up to 2X the transaction capacity, per block, versus MultiSig approved transactions

    • Potential for higher mining prioritization

    • Potential for lower transaction fees

  • t (threshold) of n signature control for flexible approvals and key share recovery

  • Ability to add/delete approvers off-chain, without generating a new key

  • No on-chain broadcast of policies or changes for greater privacy and security

  • Dramatically reduced potential for key theft by never producing a whole key on any device, at any time.


Sepior Threshold KMaaS

Maintaining the confidentiality, integrity, and access of customer data stored in cloud services is important for any SaaS. Giving customers more control, with cost-effective key management as a service (KMaaS) will be an increasingly important metric for customers. Sepior™ Threshold KMaaS is a white label KMaaS that makes it easy, and cost-effective for CSPs to offer KMaaS to subscribers.

  • KMaaS can be provided using hardware security modules (HSMs), but with substantial costs and operational complexity. And customers must trust that the CSP will not leverage their control of the HSM/key for unauthorized purposes, including warrant compliance.

  • Threshold KMaaS, a white label service available to CSPs, gives SaaS providers the option to easily integrate and offer HSM-like KMaaS, without the cost or complexity of procuring, managing, scaling, and maintaining HSMs. It also provides the option for the CSP to offer threshold KMaaS as a fully managed service, allowing customers to host their own BYOK service, or even use that BYOK service for multi-cloud key management.

  • Cloud-native integration makes Threshold KMaaS a seamless extension to your existing SaaS services

  • Threshold cryptography using multiparty computation (MPC) enables multi-cloud key management for high availability

  • Dramatically reduced potential for key theft by never producing a whole key on any key server, at any time.