US 2011/0258450 A1Published application

Method for transmitting syncml synchronization data

AssigneeHuawei Technologies Co., Ltd.

InventorLinyi Tian

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Abstract

The present invention provides methods for transmitting SyncML synchronization data. One is that the originator constructs a SyncML message after encrypting the user data to be transmitted and then transmits the data in an existing transmission way; the user data includes, but is not confined to, authentication information, terminal capability information and the data to be synchronized; the other method is that the originator encrypts the SyncML message in the transport layer before transmitting the message, and the recipient deciphers the received SyncML message from transport layer and processes the message subsequently. The two methods can be used either separately or together. If they are used together, the transmission of SyncML synchronization data is provided with double safety insurance. By using the present invention, user data can be transmitted safely without being intercepted by the third party.

Claims20

Dependent claims

A method for transmitting SyncML synchronization data, comprising:

receiving, by a Data Sync Server device, a synchronization initialization request sent from a Data Sync terminal device;
determining, by the Data Sync Server device, whether the synchronization initialization request comprises an encryption indicator, and if there is no encryption indicator in the synchronization initialization request, returning a synchronization initialization response comprising a failure reason indicating that encryption is required;
determining, by the Data Sync Server device, whether the Data Sync Server device supports an algorithm and a key length indicated in the synchronization initialization request, if the Data Sync Server device supports, acquiring a session key in the synchronization initialization request and performing initialization operations, otherwise, returning a synchronization initialization response comprising a failure reason indicating that the Data Sync Server device does not support the algorithm or the key length in the synchronization initialization request;
receiving, by the Data Sync Server device, synchronization data encrypted by the session key from the Data Sync terminal device, decrypting the synchronization data by the acquired session key and performing synchronization operations;
encrypting, by the Data Sync Server device, data with the session key to form encrypted synchronization data and transmitting the encrypted synchronization data to the Data Sync terminal device;
receiving, by the Data Sync Server device, a synchronization completion request sent from the Data Sync terminal device;
and
returning, by the Data Sync Server device, a synchronization completion acknowledgement to the Data Sync terminal device.

5 more elements

A Data Sync Server device, configured to execute a method for transmitting SyncML synchronization data, wherein the device comprises:

a synchronization initialization receiving unit that receives request sent from a Data Sync terminal device;
an encryption determining unit that determines whether the synchronization initialization request comprises an encryption indicator, and if there is no encryption indicator in the synchronization initialization request, returns a synchronization initialization response comprising a failure reason indicating that encryption is required;
a support determining unit that determines whether the Data Sync Server device supports an algorithm and a key length indicated in the synchronization initialization request, if the Data Sync Server device supports, acquires a session key in the synchronization initialization request and performs initialization operations, otherwise, returns a synchronization initialization response comprising a failure reason indicating that the Data Sync Server device does not support the algorithm or the key length in the synchronization initialization request;
a synchronization data receiving unit that receives synchronization data encrypted by the session key from the Data Sync terminal device, decrypts the synchronization data by the acquired session key and performs synchronization operations;
a data encrypting unit that encrypts data with the session key to form encrypted synchronization data and transmits the encrypted synchronization data to the Data Sync terminal device;
a a synchronization completion request receiving unit that receives a synchronization completion request sent from the Data Sync terminal device;
and
a a synchronization completion returning unit that returns a synchronization completion acknowledgement to the Data Sync terminal device.

5 more elements

A Data Sync terminal device, configured to execute an algorithm for transmitting SyncML synchronization data, wherein the device comprises:

a generating unit that generates a session key;
a synchronization initialization request sending unit that sends a synchronization initialization request, which carries the session key and an encryption indicator and indicates an algorithm and a key length, to a Data Sync Server device;
a synchronization data sending unit that sends synchronization data encrypted by the session key to the Data Sync Server device;
an encrypted synchronization data receiving unit that recievesencrypted synchronization data from the Data Sync Server device, decrypts the encrypted synchronization data by the session key and performs synchronization operations;
a synchronization completion request sending unit that sends a synchronization completion request to the Data Sync Server device;
and
a synchronization completion receiving unit that receives a synchronization completion acknowledgement from the Data Sync Server device.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/173,652Filed 30 Jun 2011
Priority: CN 200410080190.924 Sep 2004
Published: 20 Oct 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04L 9/0838
Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for…:…
H04L 9/12
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: transmitting and receiving…
H04L 9/3242
Using cryptographic hash functions: involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
H04L 9/3271
Including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity…: using…

Family

Application11/610,711Continuation · filed 14 Dec 2006
Application13/173,652Continuation
US 2007/0162518 A1Published application
US 7,996,358 B2Related patent
US 8,370,296 B2Related patent
US 2011/0258450 A1This patent

From the US filing history. Foreign family members aren’t listed.