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    Apparatus and method for key update for use in a block cipher algorithm
    1.
    发明授权
    Apparatus and method for key update for use in a block cipher algorithm 有权
    密钥更新的装置和方法，用于块密码算法

    公开(公告)号：US09160525B2

    公开(公告)日：2015-10-13

    申请号：US13946797

    申请日：2013-07-19

    Applicant: QUALCOMM Incorporated

    Inventor： Steven M. Millendorf ,  Cameron A. McDonald

    IPC: H04L9/00 ,  H04L9/06

    CPC classification number: H04L9/0637 ,  H04L9/003 ,  H04L9/0631 ,  H04L2209/24

    Abstract: A method herein is for encryption key update in a station. In the method, a first data block is encrypted using a first plurality of round keys over a first plurality of rounds to generate a first encrypted data block, wherein the first plurality of round keys are generated based on an initial block key. A round key of the first plurality of round keys is retained for use as a basis for a first derived block key. A second data block is encrypted using a second plurality of round keys over a second plurality of rounds to generate a second encrypted data block, wherein the second plurality of round keys are generated based on the first derived block key. A round key of the second plurality of round keys may be retained for use as a basis for a second derived block key.

    Abstract translation: 这里的一种方法是用于站中的加密密钥更新。 在该方法中，在第一多个轮次中使用第一多个循环密钥对第一数据块进行加密以生成第一加密数据块，其中基于初始块密钥生成第一多个循环密钥。 保留第一多个循环密钥的循环密钥以用作第一导出块密钥的基础。 第二数据块在第二多个轮次中使用第二多个循环密钥进行加密以生成第二加密数据块，其中基于第一导出块密钥生成第二多个循环密钥。 可以保留第二多个循环密钥的循环密钥以用作第二导出块密钥的基础。

    PROVIDING AN ENCRYPTED ACCOUNT CREDENTIAL FROM A FIRST DEVICE TO A SECOND DEVICE
    5.
    发明申请
    PROVIDING AN ENCRYPTED ACCOUNT CREDENTIAL FROM A FIRST DEVICE TO A SECOND DEVICE 有权
    向第二个设备提供从第一个设备获得的加密帐户凭证

    公开(公告)号：US20140208112A1

    公开(公告)日：2014-07-24

    申请号：US13748376

    申请日：2013-01-23

    Applicant: QUALCOMM INCORPORATED

    Inventor： Cameron A. McDonald ,  Matthew C. Duggan

    IPC: H04L9/08

    CPC classification number: H04W12/04 ,  G06F21/34 ,  G06F21/41 ,  H04L9/085 ,  H04L9/32 ,  H04L63/0435 ,  H04L63/0815 ,  H04L63/083 ,  H04L63/0853 ,  H04L2463/061 ,  H04W4/80

    Abstract: Disclosed is an apparatus, system, and method to decrypt an encrypted account credential at a second device that is received from a first device. The second device may receive a first share of a master key and the encrypted account credential from the first device. The second device may reconstruct the master key with the first share of the master key and a second share of the master key stored at the second device. The second device may decrypt the encrypted account credential with the reconstructed master key. Based upon the decrypted account credential, the second device may be enabled to access an account based upon the decrypted account credential.

    Abstract translation: 公开了一种在从第一设备接收的第二设备处对加密的帐户凭证进行解密的装置，系统和方法。 第二设备可以从第一设备接收主密钥的第一共享和加密的帐户凭证。 第二设备可以利用主密钥的第一共享和存储在第二设备处的主密钥的第二共享重建主密钥。 第二设备可以用重建的主密钥解密加密的帐户凭证。 基于解密的帐户凭证，第二设备可以被启用以基于解密的帐户凭证来访问帐户。

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