Secure element with shared memories, for a multi-image owner device
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United States of America Patent
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Feb 9, 2021
Grant Date -
May 24, 2018
app pub date -
Apr 18, 2016
filing date -
May 5, 2015
priority date (Note) -
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Abstract
A secure element equips a device usable by N image owners, and comprises a first non-volatile memory divided into N parts storing image owner data, a second non-volatile memory storing a primary boot loader, a third non-volatile memory divided into N parts storing image owner session private data, a first random access memory divided into N parts associated to the N first non-volatile memory parts, a second random access memory for temporarily storing image owner data during an access session, and a controller activated by the primary boot loader when the device starts an access session, and then controlling accesses to the non-volatile memories and random access memories according to rules, and erasing the second random access memory each time the device starts an access session.
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