发明名称 |
SYSTEM AND METHOD FOR WIRELESS DATA PROTECTION |
摘要 |
Disclosed herein are systems, methods, and non-transitory computer-readable storage media for wireless data protection utilizing cryptographic key management on a primary device and a backup device. A system encrypts a file with a file key and encrypts the file key twice, resulting in two encrypted file keys. The system encrypts each file key differently and stores a first file key on the primary device and transmits one of the encrypted file keys in addition to the encrypted file to a backup device for storage. On the backup device, the system associates the encrypted tile key with a set of backup keys protected by a user password. In one embodiment, the system generates an initialization vector for use in cryptographic operations based on a file key. In another embodiment, the system manages cryptographic keys on a backup device during a user password change. |
申请公布号 |
US2017019383(A1) |
申请公布日期 |
2017.01.19 |
申请号 |
US201615217674 |
申请日期 |
2016.07.22 |
申请人 |
Apple Inc. |
发明人 |
Sauderwald Conrad;Bhavsar Vrajesh Rajesh;McNeil Kenneth Buffalo;Duffy Thomas Brogan;Brouwer Michael Lambertus Hubertus;Byom Michael John;Adler Mitchell David;Tamura Eric Brandon |
分类号 |
H04L29/06;G06F11/14;H04L9/06;H04W12/04;H04L9/08 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
encrypting a file with a file key to yield an encrypted file; encrypting the file key with a class encryption key to yield an encrypted file key; encrypting the file key with a public key associated with a set of backup keys to yield a second encrypted file key; and transmitting the encrypted file and the second encrypted file key to a backup device. |
地址 |
Cupertino CA US |