公开(公告)号：US11995446B2

公开(公告)日：2024-05-28

申请号：US17661696

申请日：2022-05-02

Applicant: Apple Inc.

Inventor： Steven A. Myers ,  Jeffry E. Gonion ,  Yannick L. Sierra ,  Thomas Icart

IPC: G06F9/38 ,  G06F9/30 ,  G06F9/455 ,  G06F21/60 ,  G06F21/52 ,  G06F21/62

CPC classification number: G06F9/3844 ,  G06F9/30029 ,  G06F9/45558 ,  G06F21/602 ,  G06F21/52 ,  G06F21/6209

Abstract: Techniques are disclosed relating to protecting branch prediction information. In various embodiments, an integrated circuit includes branch prediction logic having a table that maintains a plurality of entries storing encrypted target address information for branch instructions. The branch prediction logic is configured to receive machine context information for a branch instruction having a target address being predicted by the branch prediction logic, the machine context information including a program counter associated with the branch instruction. The branch prediction logic is configured to use the machine context information to decrypt encrypted target address information stored in one of the plurality of entries identified based on the program counter. In some embodiments, the branch prediction logic decrypts the encrypted target address information by performing a cipher to encrypt the machine context information and performing a Boolean exclusive-OR operation of the encrypted machine context information and the encrypted target address information.

公开(公告)号：US11847099B2

公开(公告)日：2023-12-19

申请号：US17533106

申请日：2021-11-22

Applicant: Apple Inc.

Inventor： Per Love Hornquist Astrand ,  Van Hong ,  Nihar Sharma ,  Xixi Lu ,  Steven A. Myers ,  Michelle D. Linington ,  Yannick L. Sierra

IPC: H04L29/06 ,  G06F16/178 ,  G06F16/182 ,  H04L9/30 ,  H04L9/08 ,  H04L9/12 ,  H04L9/32

CPC classification number: G06F16/178 ,  G06F16/1834 ,  H04L9/0819 ,  H04L9/0825 ,  H04L9/0891 ,  H04L9/12 ,  H04L9/30 ,  H04L9/3247

Abstract: The subject technology may be implemented by a device that includes at least one processor configured to encrypt a data object based at least in part on an encryption key. The at least one processor may be further configured to sign the encrypted data object with a private key and transmit the signed encrypted data object to a server for retrieval by another device. The at least one processor may be further configured to generate a sharing object corresponding to the data object, wherein the sharing object includes an encryption key and a public key that corresponds to the private key. The at least one processor may be further configured to encrypt the sharing object using a key of the other device and transmit, over a secure channel, the encrypted sharing object to the other device for subsequent retrieval and verification of the signed data object from the server.

公开(公告)号：US11790113B2

公开(公告)日：2023-10-17

申请号：US17343358

申请日：2021-06-09

Applicant: Apple Inc.

Inventor： Pablo Antonio Gonzalez Cervantes ,  Mohan Singh Randhava ,  Jorge F. Pozas Trevino ,  Samuel A. Mussell ,  Isaac Pinol Catadau ,  Steven A. Myers ,  Dongsheng Zhang ,  Suhail Ahmad ,  Zhengjun Jiang ,  Yannick L. Sierra ,  Amir H. Jadidi

IPC: G06F21/62 ,  G16H10/60 ,  H04L9/08 ,  H04L9/14

CPC classification number: G06F21/6245 ,  G16H10/60 ,  H04L9/0825 ,  H04L9/0866 ,  H04L9/14

Abstract: A user device may share encrypted health data with an electronic health record (EHR) system associated with a health institution. A unique data identifier that identifies a portion of the health data and a cryptographic key may be shared with the EHR system. The encrypted health may be shared with a service provider and a unique data identifier. To access the health data, the EHR system may query the service provider with the unique data identifier.

公开(公告)号：US20220326957A1

公开(公告)日：2022-10-13

申请号：US17661696

申请日：2022-05-02

Applicant: Apple Inc.

Inventor： Steven A. Myers ,  Jeffry E. Gonion ,  Yannick L. Sierra ,  Thomas Icart

IPC: G06F9/38 ,  G06F9/30 ,  G06F9/455 ,  G06F21/60

Abstract: Techniques are disclosed relating to protecting branch prediction information. In various embodiments, an integrated circuit includes branch prediction logic having a table that maintains a plurality of entries storing encrypted target address information for branch instructions. The branch prediction logic is configured to receive machine context information for a branch instruction having a target address being predicted by the branch prediction logic, the machine context information including a program counter associated with the branch instruction. The branch prediction logic is configured to use the machine context information to decrypt encrypted target address information stored in one of the plurality of entries identified based on the program counter. In some embodiments, the branch prediction logic decrypts the encrypted target address information by performing a cipher to encrypt the machine context information and performing a Boolean exclusive-OR operation of the encrypted machine context information and the encrypted target address information.