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    SYSTEM AND METHOD OF RELIABLE FORWARD SECRET KEY SHARING WITH PHYSICAL RANDOM FUNCTIONS
    1.
    发明公开
    SYSTEM AND METHOD OF RELIABLE FORWARD SECRET KEY SHARING WITH PHYSICAL RANDOM FUNCTIONS 审中-公开
    系统和方法进行可靠的前瞻性份额的主要物理随机函数SAFE

    公开(公告)号：EP1683297A1

    公开(公告)日：2006-07-26

    申请号：EP04770338.4

    申请日：2004-10-28

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN DIJK, Marten, E.

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0847 ,  H04L9/0866 ,  H04L2209/08

    摘要： A secure solution is provided to the problem of secret key agreement. In particular, a method of reliable forward secret key sharing is disclosed between two legitimate correspondents whose profiles match sufficiently. The invention relies on a physical random function, sometimes referred to as a physical unclonable function (PUF) to provide a secure solution to the problem of secret key agreement. In one embodiment, a one-pass protocol is introduced based on Reed-Solomon codes leading to an unconditionally secure solution. In a further embodiment, the solution of the first embodiment is improved upon by providing a conditionally secure solution based on a pseudo random family of functions. In a still further embodiment, a two-pass protocol is introduced which is used exclusively for purposes of identification and authentication. In accordance with the principles of the two-pass protocol, two communications are required and unlike the one-pass protocol, the second correspondent selects the secret key K.

    COPY PROTECTION SYSTEM
    3.
    发明公开
    COPY PROTECTION SYSTEM 有权
    复制保护系统

    公开(公告)号：EP1282899A1

    公开(公告)日：2003-02-12

    申请号：EP01931661.1

    申请日：2001-04-27

    申请人： Koninklijke Philips Electronics N.V.

    发明人： TALSTRA, Johan, C. ,  MAES, Maurice, J., J., J-B. ,  HOLLMANN, Hendrik, D., L. ,  VAN DIJK, Marten, E.

    IPC分类号： G11B20/00

    CPC分类号： G11B20/00449 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/00884

    摘要： The invention relates to an apparatus for reading out information from an information carrier, the information including at least a first signal of at least partly encrypted content, to an apparatus for storing such information as well as to corresponding methods. The invention proposes a realisation of the Content Scrambling System (CSS) rule: CSS encrypted content on a recordable disc should be refused. In order to be able to use a wobbled disc for distinguishing ROM-discs from recordable discs, it is required that in the content on 'new' discs there will be a 'wobble-trigger'. This trigger has the following requirements: it should be easily detectable from looking just at the content, it should not be easily removable by a hacker, it should not affect content preparation. It is thus proposed according to the invention that an apparatus for reading out information comprises: means for detecting a second signal logically embedded in the first signal, means for detecting a physical mark used for storing at least part of the information on the information carrier, and means for refusing play back of the information read from the information carrier if a second signal but no physical mark has been detected.

    ENCODING MULTIWORD INFORMATION BY WORDWISE INTERLEAVING
    4.
    发明授权
    ENCODING MULTIWORD INFORMATION BY WORDWISE INTERLEAVING 有权
    用字符交织对多字信息进行编码

    公开(公告)号：EP1040583B1

    公开(公告)日：2008-03-26

    申请号：EP99939406.7

    申请日：1999-07-19

    申请人： Koninklijke Philips Electronics N.V. ,  Sony Corporation

    发明人： VAN DIJK, Marten, E. ,  TOLHUIZEN, Ludovicus, M., G., M. ,  KAHLMAN, Josephus, A., H., M. ,  BAGGEN, Constant, P., M., J. ,  HATTORI, Masayuki ,  YAMAMOTO, Kouhei ,  NARAHARA, Tatsuya ,  SENSHU, Susumu

    IPC分类号： H03M13/00 ,  H03M13/27

    CPC分类号： H03M13/2954 ,  G11B20/1833 ,  G11B20/1866 ,  G11B2020/1272 ,  G11B2020/1846

    摘要： Multiword information is based on multibit symbols disposed in relative contiguity with respect to a medium, and is encoded with a wordwise interleaving and wordwise error protection code for providing error locative clues across multiword groups. In particular, the clues originate in high protectivity clue words (BIS) that are interleaved among clue columns, and also in synchronizing columns constituted from synchronizing bit groups. The synchronizing columns are located where the clue columns are relatively scarcer disposed. The clues are directed to low protectivity target words (LDS) that are interleaved in a substantially uniform manner among target columns which form uniform-sized column groups between periodic arrangements of clue columns and synchronizing columns.

    摘要翻译： 多字信息基于相对于介质相对邻接布置的多位符号，并且用字符交织和字符错误保护编码进行编码，以提供跨多字组的错误定位线索。 具体来说，线索起源于在线索列之间交错的高保护性线索字（BIS），并且也在同步由同步位组构成的列中。 同步柱位于线索柱相对较少的地方。 线索针对在以线性列和同步列的周期性排列之间形成均匀大小的列组的目标列之间以基本均匀的方式交错的低保护性目标字（LDS）。

    EMBEDDING AUXILIARY DATA IN AN INFORMATION SIGNAL
    7.
    发明公开
    EMBEDDING AUXILIARY DATA IN AN INFORMATION SIGNAL 审中-公开
    附加数据在信息信号积分

    公开(公告)号：EP1395986A1

    公开(公告)日：2004-03-10

    申请号：EP02769538.6

    申请日：2002-05-15

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN DIJK, Marten, E. ,  WILLEMS, Franciscus, M., J.

    IPC分类号： G11B20/00

    CPC分类号： G11B20/00891 ,  G11B20/00 ,  G11B20/00086 ,  G11B20/18

    摘要： Information signals such as grayscale images or audio signals are represented as a sequence of PCM signal samples. To embed auxiliary data in the least significant bits of the signal, the samples are slightly distorted. There is a so-termed 'rate-distortion function' (20) which gives the largest embedding rate R given a certain distortion level D. It appears that the efficiency of prior art embedding schemes such as LSB replacement (21,22) can be improved. The invention discloses such embedding schemes (23,24). According to the invention, the signal is divided into groups of L (L>1) signal samples (x). For each group of signal samples, a vector of least significant portions (x mod n) of the signal samples is created. For n=2, the vector comprises the least significant bit of each signal sample. The syndrome of said vector (as defined in the field of error detection and correction) represents the embedded data. Only one (or a few, in any case less than L) signal sample(s) of a group needs to be modified so as to achieve that the vector assumes a desired syndrome value.

    SECURE DATA INPUT DIALOGUE USING VISUAL CRYPTOGRAPHY
    9.
    发明授权
    SECURE DATA INPUT DIALOGUE USING VISUAL CRYPTOGRAPHY 有权
    安全数据输入DIALOG MEANS视觉密码

    公开(公告)号：EP1472584B1

    公开(公告)日：2005-11-30

    申请号：EP02785858.8

    申请日：2002-12-13

    申请人： Koninklijke Philips Electronics N.V.

    发明人： STARING, Antonius, A., M. ,  VAN DIJK, Marten, E. ,  TUYLS, Pim, T.

    IPC分类号： G06F1/00 ,  H04N1/44 ,  H04K1/00

    CPC分类号： G09C5/00

    摘要： A method of secure transmission and reception of a message from a user. An image (320) representing a plurality of input means, e.g. an image of a keypad, is generated and encoded. The image is encoded using visual cryptography using a key sequence stored in a decryption device (310) as randomization. The randomized image is transmitted to the client device (301), where it is displayed on a first display (501) .The randomization is displayed on a second display (311) .Superimposing the first and second displays reveals the image. The client device (301) allows the user to select particular spots on the first display (501) that correspond to the location of particular input means on the reconstructed image. The coordinates of these spots are transmitted back to the server (300), which can translate them to the particular input means selected by the user. The message is then constructed as the input symbol represented by the particular input means.

    METHOD AND SYSTEM FOR GENERATING A COMMON SECRET KEY
    10.
    发明公开
    METHOD AND SYSTEM FOR GENERATING A COMMON SECRET KEY 审中-公开
    方法和系统，用于生成公共密钥

    公开(公告)号：EP1543649A1

    公开(公告)日：2005-06-22

    申请号：EP03797422.7

    申请日：2003-08-11

    申请人： Koninklijke Philips Electronics N.V.

    发明人： TUYLS, Pim, T. ,  VAN DIJK, Marten, E. ,  SCHOENMAKERS, Berry

    IPC分类号： H04L9/30

    CPC分类号： H04L9/0841 ,  H04L9/3073

    摘要： A method for generating a common secret data item between a first user facility and a second user facility does so through by each user facility executing mutually symmetric operations on respective complementary data items that are based on respectively unique quantities and that are at least in part secret. An outcome of the operations is used in both said user facilities as said common secret data item. In particular, the method is based on defining the complementary data belonging to a GAP Diffie-Hellmann Problem that is defined in an Abelian Variety. More in particular, the Abelian Variety has a dimension one through being an elliptic curve.