公开(公告)号：US11228421B1

公开(公告)日：2022-01-18

申请号：US15884263

申请日：2018-01-30

Applicant: Apple Inc.

Inventor： Arthur Mesh ,  Jerrold V. Hauck ,  Pierre-Olivier J. Martel ,  Wade Benson ,  Oren M. Elrad

IPC: G06F21/00 ,  H04L9/00 ,  H04L9/08 ,  G06F21/31 ,  G06F21/56

Abstract: Secure secrets can be used, in one embodiment, to generate a master key. In one embodiment, a first secret value, generated and stored in a first secure element, can be used with a user's credential (e.g., a user's passcode) to generate, through a first key derivation function, a second secret value. A master key can then be generated through a second key derivation function based on the second secret value and a derived or stored secret such as a device's unique identifier.

公开(公告)号：US11074582B2

公开(公告)日：2021-07-27

申请号：US15709925

申请日：2017-09-20

Applicant: Apple Inc.

Inventor： Herve Sibert ,  Oren M. Elrad ,  Jerrold V. Hauck ,  Onur E. Tackin ,  Zachary A. Rosen ,  Matthias Lerch

IPC: G06Q20/14 ,  G06Q20/10 ,  G06Q20/40 ,  G06Q20/38 ,  G06F16/182 ,  G06Q20/32 ,  G06Q20/20 ,  G06F21/32 ,  G06F21/31 ,  H04W12/065 ,  H04W12/06 ,  H04L9/32

Abstract: Techniques are disclosed relating to secure data storage. In various embodiments, a mobile device includes a wireless interface, a secure element, and a secure circuit. The secure element is configured to store confidential information associated with a plurality of users and to receive a request to communicate the confidential information associated with a particular one of the plurality of users. The secure element is further configured to communicate, via the wireless interface, the confidential information associated with the particular user in response to an authentication of the particular user. The secure circuit is configured to perform the authentication of the particular user. In some embodiments, the mobile device also includes a biosensor configured to collect biometric information from a user of the mobile device. In such an embodiment, the secure circuit is configured to store biometric information collected from the plurality of users by the biosensor.

公开(公告)号：US10303884B2

公开(公告)日：2019-05-28

申请号：US15588547

申请日：2017-05-05

Applicant: Apple Inc.

Inventor： Peng Liu ,  Ahmer A. Khan ,  Onur E. Tackin ,  Oren M. Elrad

IPC: G06F1/00 ,  G06F21/57 ,  H04L9/32 ,  H04L29/06

Abstract: A device facilitating countersigning updates for multi-chip devices includes at least one processor configured to receive, from a collocated chip, a data item and a software update, the data item being signed using a private key corresponding to a primary entity associated with the collocated chip and the data item comprising an authentication code generated using a symmetric key corresponding to a secondary entity associated with the software update. At least one processor is further configured to verify the data item using a public key associated with the primary entity. At least one processor is further configured to verify the software update based at least in part on the authentication code and using the symmetric key corresponding to the primary entity. At least one processor is further configured to install the software update when both the data item and the software update are verified, otherwise discard the software update.

公开(公告)号：US09554346B2

公开(公告)日：2017-01-24

申请号：US14821144

申请日：2015-08-07

Applicant: Apple Inc.

Inventor： Luciano M. Verger ,  Madhusudan Chaudhary ,  Onur E. Tackin ,  Oren M. Elrad ,  Srinivasan Vasudevan ,  Thanigaivelu Elangovan ,  Tiange Shao

IPC: H04L1/00 ,  H04W56/00 ,  H04W36/08 ,  H04W36/00 ,  H04J3/06 ,  H04L1/20 ,  H04L29/06 ,  H04W36/14 ,  H04L29/08

CPC classification number: H04W56/003 ,  H04J3/0632 ,  H04L1/203 ,  H04L1/205 ,  H04L29/06027 ,  H04L65/80 ,  H04L67/322 ,  H04W36/0022 ,  H04W36/0072 ,  H04W36/0088 ,  H04W36/08 ,  H04W36/14

Abstract: A jitter buffer in a Voice over LTE receiver may be influenced by radio level feedback (RLF) from both local and remote endpoints to preemptively adjust the jitter buffer delay in anticipation of predicted future losses that have a high probability of occurring. The radio events of the RLF and the scenarios that trigger the preemptive adjustments may be identified, and their use may be expressed in terms of mathematical formulas. Previously, the instantaneous jitter was derived from a weighted history of the media stream, and consequently only packets that had already been received were used to compute the instantaneous jitter to adjust the length of the buffer. By providing and using RLF from both local and remote endpoints, the anticipated delay—for packets that have not yet arrived—may be used to preemptively adjust the buffer, thereby minimizing packet loss without introducing unnecessary delay.

Abstract translation: 在LTE语音接收机中的抖动缓冲器可能受来自本地和远端端点的无线电电平反馈（RLF）的影响，以预先考虑具有高概率发生的预测未来损耗的抖动缓冲器延迟。 可以识别RLF的无线电事件和触发抢先调整的场景，并且可以用数学公式来表示它们的使用。 以前，瞬时抖动是从媒体流的加权历史得出的，因此只有已经接收到的数据包被用于计算瞬时抖动以调整缓冲器的长度。 通过从本地端点和远端端点提供和使用RLF，对于尚未到达的数据包，预期的延迟可能被用于抢先调整缓冲区，从而最大限度地减少数据包丢失而不引入不必要的延迟。