公开(公告)号：JP2006222944A

公开(公告)日：2006-08-24

申请号：JP2006019145

申请日：2006-01-27

Applicant: MICROSOFT CORP

Inventor： CROSS DAVID B ,  BRYCE DUNCAN G ,  GU JIANRONG ,  YIU KELVIN SHEK ,  ENE-PIETROSANU MONICA I

IPC: H04L9/08

Abstract: PROBLEM TO BE SOLVED: To provide an encrypted list of previously used keys by systems and methods for managing multiple keys for file encryption and decryption. SOLUTION: The list itself may be encrypted using a current key. To decrypt files that are encrypted in one or more of the previous keys, the list can be decrypted and the appropriate previous key can be retrieved. T re-key files, an automated process can decrypt any files using previous keys and encrypt them using the current key. If a new current key is introduced, the prior current key can be used to decrypt the list of keys, the prior current key can be added to the list and the list can be re-encrypted using the new current key. COPYRIGHT: (C)2006,JPO&NCIPI

公开(公告)号：AU2006315415A1

公开(公告)日：2007-05-24

申请号：AU2006315415

申请日：2006-11-14

Applicant: MICROSOFT CORP

Inventor： AGARWAL VISHAL ,  BEN-MENAHEM AVI ,  ENE-PIETROSANU MONICA I

IPC: G06F17/00 ,  G06F15/00

Abstract: A revocation determination service determines for a client whether a particular digital certificate as issued by a particular certificate authority (CA) has been revoked by such CA. In the service, an engine receives a query from the client, where the query identifies the particular certificate and the CA that issued the particular certificate. At least one provider is resident at the service, where each provider corresponds to a revocation information repository and represents the corresponding repository at the service, and connects to the corresponding repository. Each repository has revocation information from at least one CA. A configuration store includes a configuration information record corresponding to each provider resident at the service. Each configuration information record includes an identification of the provider and of each CA that the repository corresponding to such provider has revocation information for.

公开(公告)号：CA2628932A1

公开(公告)日：2007-05-24

申请号：CA2628932

申请日：2006-11-14

Applicant: MICROSOFT CORP

Inventor： AGARWAL VISHAL ,  BEN-MENAHEM AVI ,  ENE-PIETROSANU MONICA I

IPC: G06F17/00 ,  G06F15/00

Abstract: A revocation determination service determines for a client whether a particular digital certificate as issued by a particular certificate authority (CA) has been revoked by such CA. In the service, an engine receives a query from the client, where the query identifies the particular certificate and the CA that issued the particular certificate. At least one provider is resident at the service, where each provider corresponds to a revocation information repository and represents the corresponding repository at the service, and connects to the corresponding repository. Each repository has revocation information from at least one CA. A configuration store includes a configuration information record corresponding to each provider resident at the service. Each configuration information record includes an identification of the provider and of each CA that the repository corresponding to such provider has revocation information for.