U.S. Patent 10491578 was awarded to SAP SE on November 26, 2019 and is entitled “Mitigation of offline ciphertext-only attacks.” The first named inventor is Cedric Hebert of Mougins, . The abstract contains an overview of the patent disclosure:

Disclosed herein are system, method, and computer program product embodiments for mitigating offline decryption attacks of ciphertext. An embodiment operates by inputting plaintext into an encryptor, writing ciphertext output from the encryptor into memory, inputting the ciphertext from memory into a noise generator, outputting ciphertext from memory to an output device in response to receiving a first timing signal from a timer, and outputting noise data generated by the noise generator to the output device in response to receiving a second timing signal from the timer. The output device may be a node in a distributed ledger, in some embodiments. The distributed ledger may include a blockchain, for example. Using techniques disclosed herein, encryption may be strengthened to thwart attempts by untrusted third-party attackers to crack encryption, e.g., of information that is sensitive and/or confidential, even when they use significant computational resources separate from host computers of legitimate parties. Link to Full Patent

This blockchain patent was originally filed on March 30, 2018  as U.S. Patent Application 15/941548 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 10491578. The primary examiner was Chau Le.

SAP SE, who is the original assignee of this patent, has at least 3844 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 1 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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