AMAZON WINS PATENT FOR PROOF-OF-WORK CRYPTOGRAPHIC SYSTEM

May 19,2019 at 01:23 am




Amazon has been granted a patent for various techniques to build a proof-of-work (PoW) cryptographic system similar to those used by blockchains such as bitcoin.

The tech giant first filed in December 2016 and awarded Tuesday by the U.S. Patent and Trademark Office (USPTO), the patent outlines how Merkle trees can be generated as a solution to a proof-of-work challenge, among other benefits.



The patent explains:

“A proof-of-work system where a first party (e.g., a client computer system) may request access to a computing resource. A second party (e.g., a service provider) may determine a challenge that may be provided to the first party. A valid solution to the challenge may be generated and provided for the request to be fulfilled.”



PoW could also help prevent denial-of-service (DoS) and distributed denial-of-service (DDoS) attacks that frequently hit computer networks, Amazon says, explaining:

“Requiring a valid proof-of-work may mitigate a DOS or DDOS attack by causing the participants of the DOS or DDOS attack to generate a valid proof-of-work solution, which may require the use of computational resources on the attacking systems and dramatically reduce the rate at which entities participating in the attack may send requests.”



However, the patent also mentions “cryptographic key,” “digital signature” and “public signing key,” among other concepts related to blockchain and cryptocurrencies. The patent does not directly discuss blockchains or Crypto-currencies.

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