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.

公开(公告)号：DE60134940D1

公开(公告)日：2008-09-04

申请号：DE60134940

申请日：2001-11-15

Applicant: XEROX CORP

Inventor： LUNT TERESA F ,  HECHT DAVID L ,  FRANKLIN MATTHEW K ,  BERSON THOMAS A ,  STEFIK MARK J ,  BELL ALAN G ,  R DREWS DEAN ,  BREUEL THOMAS M ,  CASS TODD ,  GREENE DANIEL H ,  CURRY DOUGLAS N ,  KRIVACIC ROBERT T

IPC: B41J29/38 ,  H04N1/32 ,  B41J5/30 ,  B41J29/00 ,  G06F3/12 ,  G06T1/00 ,  H04N1/387 ,  H04N1/40

公开(公告)号：DE60029676D1

公开(公告)日：2006-09-14

申请号：DE60029676

申请日：2000-05-15

Applicant: XEROX CORP

Inventor： HUBERMAN BERNARDO A ,  FRANKLIN MATTHEW K ,  HOGG TAD H

IPC: G06Q10/10 ,  G06Q20/38

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.

公开(公告)号：DE60029676T2

公开(公告)日：2006-11-30

申请号：DE60029676

申请日：2000-05-15

Applicant: XEROX CORP

Inventor： HUBERMAN BERNARDO A ,  FRANKLIN MATTHEW K ,  HOGG TAD H

IPC: G06Q10/10 ,  G06Q20/38

公开(公告)号：JP2002190947A

公开(公告)日：2002-07-05

申请号：JP2001290056

申请日：2001-09-21

Applicant: XEROX CORP

Inventor： LUNT TERESA F ,  FRANKLIN MATTHEW K ,  HECHT DAVID L ,  BERSON THOMAS A ,  STEFIK MARK J ,  DEAN R DREWS ,  BELL ALAN G ,  BREUEL THOMAS M ,  CASS TODD A ,  CURRY DOUGLAS N ,  GREENE DANIEL H ,  KRIVACIC ROBERT T

IPC: B41J29/38 ,  B41J5/30 ,  B41J29/00 ,  G06F3/12 ,  G06T1/00 ,  H04N1/32 ,  H04N1/387 ,  H04N1/40

Abstract: PROBLEM TO BE SOLVED: To provide a printing method for appropriately preventing document forgery in accordance with a printed document. SOLUTION: A protection level which is to be applied to the document is decided from a plurality of protection levels by considering the value of the printed document, the latent possibility of forgery with respect to the document and cost for forgery prevention. A printer printing a watermark corresponding to the decided protection level is selected. The respective pages of the document are printed by using the printer. A mechanism for generating the evidence of copy and tracking information are incorporated in the watermark in accordance with the protection level.

公开(公告)号：JP2002077138A

公开(公告)日：2002-03-15

申请号：JP2001170639

申请日：2001-06-06

Applicant: XEROX CORP

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

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

Abstract: PROBLEM TO BE SOLVED: To provide an encrypting system and method therefor based on a step in application containing at least one state having a relational key. SOLUTION: When the application reaches a state, access requirement is transmitted to a server by using a network. The requirement contains a state key relating to this state. A reply mail responding to the requirement is received from the server. The reply mail contains an access key for providing access when the state key is valid.