US 12,170,738 B2
Composite cryptographic systems with variable configuration parameters and memory bound functions
Bjorn Markus Jakobsson, Portola Valley, CA (US)
Assigned to Artema Labs, Inc, Los Angeles, CA (US)
Filed by Artema Labs, Inc, Los Angeles, CA (US)
Filed on Jun. 8, 2022, as Appl. No. 17/806,060.
Claims priority of provisional application 63/228,803, filed on Aug. 3, 2021.
Claims priority of provisional application 63/228,065, filed on Jul. 31, 2021.
Claims priority of provisional application 63/224,345, filed on Jul. 21, 2021.
Claims priority of provisional application 63/208,374, filed on Jun. 8, 2021.
Prior Publication US 2022/0393892 A1, Dec. 8, 2022
Int. Cl. H04L 9/00 (2022.01); H04L 9/32 (2006.01)
CPC H04L 9/50 (2022.05) [H04L 9/32 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A device configured to add a block to a distributed ledger maintained by a composite cryptographic system, the device comprising:
a network interface;
memory; and
a processor, the processor configured to:
obtain a first proof using a first cryptographic system, wherein the first proof utilizes a Proof of Bus mechanism in which bus bandwidth acts as a limited resource;
obtain a second proof using a second cryptographic system; and
broadcast a block to securely add the block to a distributed ledger, wherein the block is capable of being validated by using the first cryptographic system to generate the first proof and by using the second cryptographic system to generate the second proof.