US 11,943,346 B2
Techniques for single round multi-party computation for digital signatures
Dan Yadlin, Tel-Aviv (IL); Ben Riva, Givatayim (IL); Alon Navon, Tel-Aviv (IL); Lev Pachmanov, Haifa (IL); and Jonathan Katz, Silver Spring, MD (US)
Assigned to PAYPAL, INC., San Jose, CA (US)
Filed by PAYPAL, INC., San Jose, CA (US)
Filed on Mar. 2, 2023, as Appl. No. 18/177,700.
Application 18/177,700 is a continuation of application No. 17/019,807, filed on Sep. 14, 2020, granted, now 11,632,244.
Prior Publication US 2023/0208631 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0861 (2013.01) [H04L 9/0825 (2013.01); H04L 9/085 (2013.01); H04L 9/3247 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
accessing, by a first device, data contained on an intermediary data storage device, wherein the intermediary data storage device is a uniform resource locator (URL), a one-way link, or a scanner, and wherein the first device is offline with respect to at least a second device;
accessing, by the first device, a first secret share generated based on a secret key;
partially signing the data, by the first device, using the first secret share;
providing a second device access to the partially signed data while the first device is still offline with respect to the second device; and
generating, by the second device, further signed data based on the partially signed data, wherein the further signed data corresponds to a public key generated based on a plurality of secret shares including the first secret share and a second secret share.