US 12,333,530 B2
Cross domain key management
Yolanda Liu, Boston, MA (US); Leonardo D. M. Machado, London (GB); Pavel Zakharov, Montreal (CA); Roman Popenov, Salem, NH (US); Larry Liu, Kendall Park, NJ (US); and Brian Ko, Fremont, CA (US)
Filed by Coinbase, Inc., Oakland, CA (US)
Filed on Jul. 31, 2023, as Appl. No. 18/228,594.
Prior Publication US 2025/0045742 A1, Feb. 6, 2025
Int. Cl. G06Q 20/38 (2012.01); G06Q 20/02 (2012.01); H04L 25/26 (2006.01)
CPC G06Q 20/3829 (2013.01) [G06Q 20/02 (2013.01); G06Q 20/3825 (2013.01); H04L 25/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for key management, comprising:
receiving, via a server and from a multi-party computation (MPC) coordinator, a first request to access a key share associated with an MPC node;
transmitting, via a first cross domain communication path and to an offline key storage system, a second request for the key share associated with the MPC node;
verifying, at the offline key storage system, a digital signature included with the second request;
transmitting, to the server via a second cross domain communication path after verifying the digital signature, a response that includes the key share that is encrypted using an encryption key associated with the MPC node; and
transmitting, to the MPC coordinator, a communication including the encrypted key share.