The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Apr. 12, 2024
Nubeva, Inc., San Jose, CA (US);
Randy Yen-Pang Chou, San Jose, CA (US);
Nubeva, Inc., San Jose, CA (US);
Abstract
The disclosed embodiments disclose techniques for decrypting an encrypted file. During operation, a recovery system receives an encryption key and a program executable that were previously used to encrypt an encrypted file using an unknown encryption technique. The program executable is executed in a sandbox environment that includes a known file containing a known pattern; the executing program generates a subsequent key and encrypts the known file. The subsequent key is extracted, and then characteristics of the known file, subsequent key, and the encrypted known file are compared to patterns determined for a set of standard encryption techniques to identify the specific encryption technique that was used. Knowledge of the identified encryption technique can then be used in combination with the original encryption key to decrypt the original encrypted file.