Cramium provides users with both through EMPC software and PHSM hardware.

No more choosing between security and convenience.

Cramium PHSM devices with digital asset icons

Why Cramium?

Cramium combines Enhanced Multi-Party Computation (EMPC) and the Portable Hardware Security Module (PHSM) to secure digital assets without sacrificing usability.

Cramium EMPC icon

Enhanced Multi-Party Computation (EMPC)

A real T-of-N MPC technology with utmost security and maximum entropy, Cramium EMPC enables users to configure security surrounding their assets.

Cramium offers a complete EMPC SDK Suite across mobile, cloud, browser, and hardware.

Cramium PHSM icon

Portable Hardware Security Module (PHSM)

The key innovation making Cramium EMPC possible, Cramium PHSM provides MPC computation on secure element to enhance security, foster greater trust in a decentralized future, and enable users to have the utmost security assurance in their hands.

Security At Whole New Level

Cramium is redefining the infrastructure layer for digital asset protection.

Eliminating Single Point Of Failure

True T-of-N MPC technology distributes key shares, ensuring no single device or entity can compromise your assets.

Zero-Knowledge Proof

Key shares never meet or reconstruct, keeping your digital assets and information safe even during signing and authorization.

Hardware Compatible

The best hardware device supporting MPC computation on secure element, enabling robust, verifiable security at the edge.

Dedicated Infrastructure For Digital Asset Security

Store and protect data for over 150 years under severe circumstances, with infrastructure designed specifically for digital asset protection.

Redefine Custody

Leveraging the power of EMPC, Cramium designed the versatile custodian model that fits your requirements - from full custody to real self-custody.

Seamless Control

Effortless key management — add, remove, or switch entities anytime, hassle-free.

Customizable Threshold

Designed by you. Tailored for your security. Choose the threshold policies that best match your risk model.

Personalized Key Hierarchy

Ability to organize and order key shares within your institutional network, aligning cryptographic structure with organizational structure.

Flexible Ownership

Manage in-house or delegate to a custodian.
It’s your choice.

Frequently Asked Questions

Learn how EMPC and PHSM work together to secure your digital assets.

How do I set up the Cramium EMPC or Cramium PHSM device? Is it simple?

Yes. Setting up Cramium EMPC and Cramium PHSM is designed to be straightforward. You register your device, verify your identity, and follow a short guided flow to back up and protect your keys. Most users are ready to manage crypto in minutes.

What happens if I lose my phone or Cramium PHSM? Can I recover my assets?

Absolutely. Your keys are protected through EMPC, so recovery can be performed using your remaining key shares and passkeys—such as another registered device or a recovery flow defined by your institution—without ever reconstructing the full key in one place.

How do I migrate my existing wallet to Cramium EMPC or Cramium PHSM?

Migration from traditional wallets is supported through guided import flows. Your existing keys can be wrapped into EMPC and distributed into key shares, letting you keep the same wallet address while gaining Cramium’s MPC-based protection.

Where are my keys stored? Can I choose between self-custody and custodial options?

Key shares are distributed between PHSM devices and Cramium EMPC infrastructure. You can keep full control with self-custody, or designate trusted custodians and service providers to hold some shares while maintaining strong, policy-based protections.

Does Cramium support FIDO2?

Yes. Cramium PHSM devices are designed to support FIDO2 passkey authentication, enabling phishing-resistant logins across multiple accounts while benefiting from the same hardware-level security used for your digital assets.