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11 records (took 0.021 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE60132048D1

    公开(公告)日：2008-02-07

    申请号：DE60132048

    申请日：2001-06-11

    Applicant: XEROX CORP

    Inventor： BERSON THOMAS A ,  DEAN R DREWS ,  FRANKLIN MATTHEW K ,  LUNT TERESA F ,  SMETTERS DIANA K

    IPC: G06F12/14 ,  G06F21/00 ,  G06F12/00 ,  G06F21/24 ,  H04L9/16

    Abstract: A system, method and article of manufacture are provided for transition state-based cryptography in an application including at least one state having a state key associated with it. A request for access (308) is sent to a server utilizing a network upon reaching a state in the application. The request includes a state key associated with the state. A reply (312) is received from the server in response to the request. The reply includes an access key for providing the access if the state key is valid. According to another embodiment of the present invention, a method is provided for transition state-based cryptography in an application including at least one state having a state key associated with it. A request for access is received from a client to a server utilizing a network. The state key is verified at the server. A reply is sent from the server in response to the request. The reply includes an access key for providing the access if the state key is verified. In one aspect of the present invention, the request for access is for a subsequent state in the application.

    5.
    发明专利
    未知

    公开(公告)号：DE60132048T2

    公开(公告)日：2008-12-11

    申请号：DE60132048

    申请日：2001-06-11

    Applicant: XEROX CORP

    Inventor： BERSON THOMAS A ,  DEAN R DREWS ,  FRANKLIN MATTHEW K ,  LUNT TERESA F ,  SMETTERS DIANA K

    IPC: G06F12/14 ,  G06F21/00 ,  G06F12/00 ,  G06F21/24 ,  H04L9/16

    Abstract: A system, method and article of manufacture are provided for transition state-based cryptography in an application including at least one state having a state key associated with it. A request for access (308) is sent to a server utilizing a network upon reaching a state in the application. The request includes a state key associated with the state. A reply (312) is received from the server in response to the request. The reply includes an access key for providing the access if the state key is valid. According to another embodiment of the present invention, a method is provided for transition state-based cryptography in an application including at least one state having a state key associated with it. A request for access is received from a client to a server utilizing a network. The state key is verified at the server. A reply is sent from the server in response to the request. The reply includes an access key for providing the access if the state key is verified. In one aspect of the present invention, the request for access is for a subsequent state in the application.

    6.
    发明专利
    未知

    公开(公告)号：DE60026914T2

    公开(公告)日：2006-08-31

    申请号：DE60026914

    申请日：2000-10-26

    Applicant: XEROX CORP

    Inventor： GREENE DANIEL H ,  DEAN R DREWS ,  BERSON THOMAS A

    IPC: G06F3/12 ,  G06F21/20 ,  G06F21/00

    Abstract: A system for controlling access to online content referenced in a hardcopy document. A user requesting access to online content available on a server responds to an authentication challenge from the server using a password mechanism printed in the hardcopy document. The password mechanism allows the user to identify a password for responding to an authentication request by the server. After authenticating the user, the server initiates a state change to enable subsequent access to the online content by the user with a different password that is also identified with the password mechanism.

    7.
    发明专利
    未知

    公开(公告)号：DE60026914D1

    公开(公告)日：2006-05-18

    申请号：DE60026914

    申请日：2000-10-26

    Applicant: XEROX CORP

    Inventor： GREENE DANIEL H ,  DEAN R DREWS ,  BERSON THOMAS A

    IPC: G06F1/00 ,  G06F21/00 ,  G06F3/12 ,  G06F21/20

    Abstract: A system for controlling access to online content referenced in a hardcopy document. A user requesting access to online content available on a server responds to an authentication challenge from the server using a password mechanism printed in the hardcopy document. The password mechanism allows the user to identify a password for responding to an authentication request by the server. After authenticating the user, the server initiates a state change to enable subsequent access to the online content by the user with a different password that is also identified with the password mechanism.

    SYSTEM FOR PREVENTING FORGERY
    8.
    发明专利
    SYSTEM FOR PREVENTING FORGERY 失效

    公开(公告)号：JP2001277652A

    公开(公告)日：2001-10-09

    申请号：JP2001032361

    申请日：2001-02-08

    Applicant: XEROX CORP

    Inventor： BERSON THOMAS A ,  BREUEL THOMAS M

    IPC: B41J3/38 ,  B41F11/02 ,  B41F17/02 ,  B41J29/00 ,  B41M3/14 ,  B42D15/00 ,  G03G21/00

    Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for tagging a document for the purpose of preventing forgery. SOLUTION: In the system and method for determining the origin and the originality by tagging a recording sheet, a roller 10 for transferring at least a part of a random pattern 11 to a document is provided. The random pattern 11 is transferred to the sheet by press, die floating or punching. The pattern 11 being transferred to the sheet can be determined by a known technology and these patterns 11 can be imaged and stored in a data base. When a plurality of rollers 10, 20 are employed in series, the random pattern 11 can be transferred to one side or both sides of the sheet while varying the phase. A sequence code can be established by determining the phase difference of the random pattern 11. The rollers 10, 20 (including a plurality of rollers) provided with the random pattern 11 can be fixed to an imaging apparatus, especially the sheet carrying mechanism thereof.

    METHOD FOR PROVIDING SAFE ACCESS TO ONLINE CONTENTS REFERRED TO IN HARD COPY DOCUMENT
    9.
    发明专利
    METHOD FOR PROVIDING SAFE ACCESS TO ONLINE CONTENTS REFERRED TO IN HARD COPY DOCUMENT 失效

    公开(公告)号：JP2001167052A

    公开(公告)日：2001-06-22

    申请号：JP2000323407

    申请日：2000-10-24

    Applicant: XEROX CORP

    Inventor： GREENE DANIEL H ,  DEAN R DREWS ,  BERSON THOMAS A

    IPC: G06F3/12 ,  G06F21/00 ,  G06F21/20 ,  G06F15/00

    Abstract: PROBLEM TO BE SOLVED: To provide safe access to online contents referred to in a hard copy document. SOLUTION: The first request of access to the online contents referred to in the hard copy document is received, a challenge to the first request to the online contents is issued, a first password extracted from a password mechanism in the hard copy document in response to this issued challenge is received. Further, a state change for the password mechanism of the hard copy document is provided for identifying a second password to be used during the second request of access to the online contents referred to in the hard copy document. Thus, safe access to the online contents referred to in the hard copy document is provided.

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