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Crypto companies are upgrading wallet and custody offerings to address a potential future threat from quantum computing. The effort focuses on securing user-facing infrastructure faster than blockchains can change their core protocols, reflecting the view that network-level upgrades to major chains such as Bitcoin and Ethereum could take years—leaving wallets exposed in the interim. Some estimates for the timing of the so-called “Q-Day” threat suggest it could arrive as soon as 2030.
Silence Laboratories said it has added support for distributed, or multi-party computation (MPC), signatures using ML-DSA, a cryptographic algorithm selected by the National Institute of Standards and Technology (NIST). Jay Prakash, CEO and co-founder of Silence Laboratories, said the company’s work builds on recent developments in post-quantum cryptography, including NIST’s approval of three algorithms: SPHINCS+, Falcon, and CRYSTALS-Dilithium.
Prakash said Silence Laboratories spent the past six months evaluating those algorithms for distributed signing systems used by custodians and institutional wallets. He said not all of the approved algorithms would necessarily meet the criteria for MPC friendliness, including whether they support efficient distributed transaction signing. He also noted that fragmentation could be a factor because different blockchains may choose different schemes, each with its own optimization criteria, signature size, or compute efficiency.
Prakash said the system’s key generation is split into shares across isolated nodes, and a signature is produced jointly without reconstructing the key. He said this design helps protect against quantum computers, which are estimated to be able to break current cryptography within a matter of years.
He added that institutions are already adopting distributed signing. “Institutions are now wired to distributed signing,” he said, adding that whether the setup involves a partner such as BitGo or a bank building a digital asset practice, “they all understand that keys can’t sit in one place.”
Silence Laboratories said its approach is designed to work within existing MPC structures. MPC systems split private keys across multiple devices, a setup commonly used by custodians and institutional wallets. The company said this allows firms to upgrade to a post-quantum MPC-based wallet without changing how their systems operate.
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