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:
Jan. 24, 2017
Filed:
Jan. 30, 2015
Qualcomm Incorporated, San Diego, CA (US);
Ron Keidar, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A of a method of securely transferring information between execution environments includes: receiving, at a crypto engine, original plaintext from a first execution environment; obtaining a first cryptographic key by the crypto engine, the first cryptographic key being retained in memory such that the first cryptographic key is associated with the first execution environment and a second execution environment that is not the first execution environment; encrypting the original plaintext by the crypto engine using the first cryptographic key to produce encrypted information, and storing the encrypted information in an intermediate storage location; obtaining, at the crypto engine, the encrypted information from the intermediate storage location; decrypting the encrypted information by the crypto engine using the first cryptographic key to produce reconstituted plaintext; and making the reconstituted plaintext available to the second execution environment by the crypto engine.