WO2008032161A1 - A personal token comprising a compression agent - Google Patents

A personal token comprising a compression agent Download PDF

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Publication number
WO2008032161A1
WO2008032161A1 PCT/IB2007/002575 IB2007002575W WO2008032161A1 WO 2008032161 A1 WO2008032161 A1 WO 2008032161A1 IB 2007002575 W IB2007002575 W IB 2007002575W WO 2008032161 A1 WO2008032161 A1 WO 2008032161A1
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WO
WIPO (PCT)
Prior art keywords
personal token
data
agent
token
personal
Prior art date
Application number
PCT/IB2007/002575
Other languages
French (fr)
Inventor
Santhosh Bajanemane
Original Assignee
Gemalto S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gemalto S.A. filed Critical Gemalto S.A.
Publication of WO2008032161A1 publication Critical patent/WO2008032161A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
    • H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
    • H04M1/2753—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips providing data content
    • H04M1/2757—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips providing data content by data transmission, e.g. downloading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages

Definitions

  • the invention relates to personal tokens used for authenticating a user when such user accesses to a limited or a private resources equipment such as a mobile telecommunication network, a remote server storing secret data or even a protected area with limited physical access thereto.
  • the mostly known device of this type is the IC card such as for example a SIM card (Subscriber Identification Module) or a credit card, but it can also be a USB key, a mass memory card, or any kind of token carrying some necessary credentials.
  • SIM card Subscriber Identification Module
  • credit card a credit card
  • USB key a USB key
  • mass memory card a mass memory card
  • Such tokens are typically compliant with international standard ISO7816. Standards are defined for SIM cards (independent of Java or non-java) and SIM TOOL KIT (STK). The standards mainly define the design, file structure, physical, electrical aspects, etc and a mechanism how one can make use of the data with commands and format of data transmissions. The data is stored in memory locations in the EEPROM memory of the SIM cards in bits and bytes representation.
  • FIG. 1 depicts two terminals in a network both associated with respective personal tokens according to an embodiment of the invention
  • FIG. 2 illustrates the use of an organizer application according to an embodiment of the invention
  • FIG. 3 illustrates an assembly comprising a remote server and a terminal hosting a personal token according to an embodiment of the invention.
  • two SIM cards 11 and 15 are hosted in two respective mobile terminals 21 and 25 so that said cards 11 and 15 and said terminals 21 and 25 can communicate with a remote operator server 30 in a mobile telephony network.
  • a user named Bob wants to send an SMS to another user named Kathy.
  • the procedure of sending the SMS is different than the normal way.
  • Bob is sending a compressed data, which Kathy receives.
  • the length of the content that Bob has prepared and is willing to send as a SMS is 200 characters or bytes. Such prepared content is stored in a buffer in RAM before Bob intitiates the sending of the SMS on his keyboard.
  • the SIM card 11 of Bob hosts an application 12 which implements a compression of the such prepared content before the SIM card 11 then encapsulates such content in a SMS in a normal way.
  • application 12 will thereafter be called compression agent.
  • the compression agent 12 detects that the sending of the SMS has been required and, as a step referenced STEP A on figure 1 , the compression agent 12 compresses the intended content as stored in the buffer.
  • the content is compressed to a smaller size, lesser to 100 or 130 characters or bytes in the present case.
  • Bob's SIM card 11 requires Bob's mobile terminal 21 to send the SMS to Kathy while encapsulating this compressed text in an SMS in the same way as a normal text.
  • the uncompression agent uncompresses the content of the SMS.
  • the un-compression agent may be executed automatically or user driven.
  • the uncompression agent 16 is user driven. Kathy uses the uncompression agent to uncompress the received SMS.
  • the uncompression agent which is an application as for application 12 in SIM card 11 , is executed and produces clear original data which is retained in an adequate buffer area in SIM card 15. Kathy is then able to read Bob's SMS.
  • agents 11 and 15 are compression/uncompression applications, which are used to compress as well as uncompress any data stored in the memory (EEPROM) of the smart card.
  • compression/uncompression agents are able to comply with the standards effectively while acting as an agent to shrink any stored data or data to be stored.
  • the stored data may be notes data, phonebook data, sms archive data, all kind of organizer data, or backup data for any kind of these types of data.
  • the present SIM card 11 hosts' an organizer application and Bob uses his mobile assembly, i.e. his mobile terminal together with the SIM card, as an organizer for the reason that it is very handy and he is always carrying it with him.
  • Bob makes notes of all his professional and personal meetings in this organizer. He does not want to lose his old data and at the same time has a large amount of data to handle. Here Bob enjoys the presently described mechanism where he can make some space in the memory of the SIM card by compressing all his old data and where he can un-compress it back any time.
  • Bob can use the memory of the SIM card 12 by compressing and un-compressing the data anytime. Such mechanism is described on figure 2.
  • An organizer application 13 is stored and run in the SIM card 11 with options of ADD NOTES, MANAGE FOLDERS, COMPRESS NOTES, UNCOMPRESS, VIEW COMPRESSED DATA and MEMORY USAGE as depicted by indicators 14a, 14b, 14c, 14d and 14e on figure 2.
  • BOB can now create a folder named backup folder in MANAGE FOLDERS, and then compress his notes with COMPRESS NOTES and then save them in the backup folder, UNCOMPRESS will uncompress the old data and restore them in an unused memory location.
  • VIEW COMPRESSED DATA content can be displayed from the buffer memory.
  • the organizer application comprises a detector module which assesses the amount of used memory at a given time and which warns the user when the memory is close to be fully occupied. The user is then invited to launch compression of the data which have still not been compressed. The compressed data will remain available for being viewed later when the user expresses the need thereto. The user will then be asked whether he wants those data to be uncompressed, by means of the uncompression agent, for being viewed.
  • the compression/uncompression agent constitutes a logic which compresses to smaller sizes the data stored in the memory of the SIM card. To get the clear data, the agent has to be again used to un-compress the data.
  • the data compression/uncompression agent should be applet based and for non-java based (native) smart cards, suitable programming language can be used for the compression/decompression agent. The functioning principles for both of these cases is advantageously the same.
  • Some compressed data can also be transmitted over the air in the data part of the transmitted packet, for example as over the air updates to SIM cards.
  • a remote server such as SMSC server 40 on figure 3 comprises a compression agent 42 for compressing data before the data are sent to the personal token 11 hosted in mobile terminal 21.
  • a usual practice is to send clear data, or byte codes for Java based SIM cards, over the air from such an SMSC 40 to the mobile terminal (and then to the SIM).
  • the SIM card performs an update or stores a new application while conforming to the GSM standards.
  • the compressed data can be interpreted using agent's conversion techniques, to clear data format (text or numbers or special characters).
  • the data can be transferred from the source to the destination with a reduced number of SMS's.
  • One further advantage of the invention is that loss of data can be better prevented.
  • the agent can be used for the whole variety of applications inside the same token.
  • the invention is not limited to SIM cards, it can be used with any kind of other personal token, such as a credit card, an USB token or a mass memory card as further examples.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention relates to a personal token (11,15) comprising a microprocessor and a memory, characterized in that it comprises a compression agent (12,16) for compressing data before the data are stored into the memory of the personal token (11,15).

Description

"A PERSONAL TOKEN COMPRISING A COMPRESSION AGENT"
The invention relates to personal tokens used for authenticating a user when such user accesses to a limited or a private resources equipment such as a mobile telecommunication network, a remote server storing secret data or even a protected area with limited physical access thereto.
The mostly known device of this type is the IC card such as for example a SIM card (Subscriber Identification Module) or a credit card, but it can also be a USB key, a mass memory card, or any kind of token carrying some necessary credentials.
Such tokens are typically compliant with international standard ISO7816. Standards are defined for SIM cards (independent of Java or non-java) and SIM TOOL KIT (STK). The standards mainly define the design, file structure, physical, electrical aspects, etc and a mechanism how one can make use of the data with commands and format of data transmissions. The data is stored in memory locations in the EEPROM memory of the SIM cards in bits and bytes representation.
Despite the benefits of such known schemes, they appear to still provide some difficulties to a card holder for managing a large amount of data.
Under such standards, the card manufacturers have used to provide data storing and data retrieving abilities that do not provide the user an opportunity for managing efficiently huge amounts of data. It appears that this is also true as concerns the data which are transmitted to a card without any intervention of the user, such as the updating data which are transmitted by SMS without being intellectually read by the end-user, i.e. data for Over-The-Air updating of the settings of the SIM card.
In such respect it is a main purpose of the invention to provide a personal token such as an IC card that the holder and/or the operator can use as a support for transiting and/or storing a large set of data. This purpose is achieved by way of the invention as recited in the appended claims.
Other purposes, benefits and aspects of the invention will appear through the following description, which is made in reference to the appended figures, among which :
- Figure 1 depicts two terminals in a network both associated with respective personal tokens according to an embodiment of the invention,
- Figure 2 illustrates the use of an organizer application according to an embodiment of the invention, - Figure 3 illustrates an assembly comprising a remote server and a terminal hosting a personal token according to an embodiment of the invention.
In a preferred embodiment of the invention as depicted on figure 1 , two SIM cards 11 and 15 are hosted in two respective mobile terminals 21 and 25 so that said cards 11 and 15 and said terminals 21 and 25 can communicate with a remote operator server 30 in a mobile telephony network.
A user named Bob wants to send an SMS to another user named Kathy. The procedure of sending the SMS is different than the normal way. Bob is sending a compressed data, which Kathy receives.
The procedure which is followed inside both SIM cards 11 , 15 of Bob and Kathy is the following one and is represented on figure 1.
The length of the content that Bob has prepared and is willing to send as a SMS is 200 characters or bytes. Such prepared content is stored in a buffer in RAM before Bob intitiates the sending of the SMS on his keyboard.
The SIM card 11 of Bob hosts an application 12 which implements a compression of the such prepared content before the SIM card 11 then encapsulates such content in a SMS in a normal way. Such application 12 will thereafter be called compression agent.
When Bob initiates the sending of the SMS, the compression agent 12 detects that the sending of the SMS has been required and, as a step referenced STEP A on figure 1 , the compression agent 12 compresses the intended content as stored in the buffer. The content is compressed to a smaller size, lesser to 100 or 130 characters or bytes in the present case.
Once the content is compressed, Bob's SIM card 11 requires Bob's mobile terminal 21 to send the SMS to Kathy while encapsulating this compressed text in an SMS in the same way as a normal text.
In a second step, referenced STEP B, Kathy receives the SMS An indicator in the SMS indicates to Cathy's SIM card 15 that the received SMS is a compressed SMS.
A uncompression agent 16 in Kathy's SIM card 15, which uncompression agent can be identical as to its functionalities with the compression agent 12 in Bob's SIM card 11 , detects the indication in the SMS that a compressed content is present.
Then the uncompression agent uncompresses the content of the SMS. The un-compression agent may be executed automatically or user driven. In the present embodiment, the uncompression agent 16 is user driven. Kathy uses the uncompression agent to uncompress the received SMS.
Then the uncompression agent, which is an application as for application 12 in SIM card 11 , is executed and produces clear original data which is retained in an adequate buffer area in SIM card 15. Kathy is then able to read Bob's SMS.
In the present embodiment, agents 11 and 15 are compression/uncompression applications, which are used to compress as well as uncompress any data stored in the memory (EEPROM) of the smart card.
These compression/uncompression agents are able to comply with the standards effectively while acting as an agent to shrink any stored data or data to be stored.
The stored data may be notes data, phonebook data, sms archive data, all kind of organizer data, or backup data for any kind of these types of data.
For example, the present SIM card 11 hosts' an organizer application and Bob uses his mobile assembly, i.e. his mobile terminal together with the SIM card, as an organizer for the reason that it is very handy and he is always carrying it with him.
Bob makes notes of all his professional and personal meetings in this organizer. He does not want to lose his old data and at the same time has a large amount of data to handle. Here Bob enjoys the presently described mechanism where he can make some space in the memory of the SIM card by compressing all his old data and where he can un-compress it back any time.
Using the compression agent 12, Bob can use the memory of the SIM card 12 by compressing and un-compressing the data anytime. Such mechanism is described on figure 2.
An organizer application 13 is stored and run in the SIM card 11 with options of ADD NOTES, MANAGE FOLDERS, COMPRESS NOTES, UNCOMPRESS, VIEW COMPRESSED DATA and MEMORY USAGE as depicted by indicators 14a, 14b, 14c, 14d and 14e on figure 2. BOB can now create a folder named backup folder in MANAGE FOLDERS, and then compress his notes with COMPRESS NOTES and then save them in the backup folder, UNCOMPRESS will uncompress the old data and restore them in an unused memory location. With VIEW COMPRESSED DATA, content can be displayed from the buffer memory. Advantageously, the organizer application comprises a detector module which assesses the amount of used memory at a given time and which warns the user when the memory is close to be fully occupied. The user is then invited to launch compression of the data which have still not been compressed. The compressed data will remain available for being viewed later when the user expresses the need thereto. The user will then be asked whether he wants those data to be uncompressed, by means of the uncompression agent, for being viewed.
In the present embodiment, the compression/uncompression agent constitutes a logic which compresses to smaller sizes the data stored in the memory of the SIM card. To get the clear data, the agent has to be again used to un-compress the data. For Java based smart cards, the data compression/uncompression agent should be applet based and for non-java based (native) smart cards, suitable programming language can be used for the compression/decompression agent. The functioning principles for both of these cases is advantageously the same. Some compressed data can also be transmitted over the air in the data part of the transmitted packet, for example as over the air updates to SIM cards.
When received and then uncompressed, these data are used as updating settings by the SIM card.
For that purpose, a remote server such as SMSC server 40 on figure 3 comprises a compression agent 42 for compressing data before the data are sent to the personal token 11 hosted in mobile terminal 21.
In mobile communications, a usual practice is to send clear data, or byte codes for Java based SIM cards, over the air from such an SMSC 40 to the mobile terminal (and then to the SIM). The SIM card performs an update or stores a new application while conforming to the GSM standards.
Let us consider as depicted on figure 3 a scenario where 2 or more SMS need to be sent from the SMSC 40 to the SIM 11 via terminal 21 for complete information transfer / update. In these kind of situations, a compressed data can be delivered to the SIM 11 , where the uncompression agent 12 performs the uncompressing action and then the uncompressed data are applied to the settings or to the programs themselves as stored in the SIM card 11 , or else as a new Java program downloaded into the SIM card.
This way, while remaining in the frame of the standards, the compressed data can be interpreted using agent's conversion techniques, to clear data format (text or numbers or special characters).
The data can be transferred from the source to the destination with a reduced number of SMS's. One further advantage of the invention is that loss of data can be better prevented.
The agent can be used for the whole variety of applications inside the same token. The invention is not limited to SIM cards, it can be used with any kind of other personal token, such as a credit card, an USB token or a mass memory card as further examples.

Claims

1. A personal token (11 ,15) comprising a microprocessor and a memory, characterized in that it comprises a compression agent (12,16) for compressing data before the data are stored into the memory of the personal token (11 ,15).
2. The personal token (11 ,15) according to claim 1 , characterized in that it comprises logic for preparing messages intended to another personal token (11 ,15) in a network, and the compression agent (12,16) compresses data before the data is prepared by said logic for preparing messages as a message to be sent.
3. The personal token (11,15) according to claim 1 or 2, characterized in that it hosts an organizer application which allows an end-user to enter notes for being memorized and the compression agent (12,16) compresses notes as entered by the end-user by means of the organizer application for such notes to be memorized in a compressed form.
4. The personal token (11 ,15) according to anyone of the preceding claims, characterized in that it comprises a decompression agent (12,16) which decompresses content of messages arriving onto the personal token (11 ,15).
5. The personal token (11 ,15) according to claim 4, characterized in that the decompression agent (12,16) decompresses content of messages which content comprises updating data for updating settings of the personal token (11 ,15).
6. The personal token (11 ,15) according to claim 4, characterized in that the decompression agent (12,16) decompresses content of messages which content comprises an application program for being memorized in the personal token.
7. The personal token (11 ,15) according to anyone of the preceding claims, characterized in that the compression agent (12,16) compresses content of x messages as received by the personal token (11 ,15).
8. The personal token (11 ,15) according to anyone of the preceding claims, characterized in that the compression agent (12,16) compresses phonebook data and the phonebook data are stored in the token in compressed form.
9. The personal token (11 ,15) according to anyone of the preceding claims, characterized in that the compression agent (12,16) decompresses the data it had previously compressed in response to an end-user of the personal token expressing the need to access to such data.
10. The personal token (11,15) according to anyone of the preceding claims, characterized in that the compression agent (12,16) has decompression abilities.
11. The personal token (11 ,15) according to anyone of the preceding claims, characterized in that it constitutes a SIM (Subscriber Identity Module) in a mobile communication network.
12. A server (40) in a mobile communication network, characterized in that it comprises a compression agent (42) for compressing data before the data are sent to a personal token (11 ,15) in the network.
PCT/IB2007/002575 2006-09-12 2007-09-07 A personal token comprising a compression agent WO2008032161A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2018DE2006 2006-09-12
IN2018/DEL/2006 2006-09-12

Publications (1)

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WO2008032161A1 true WO2008032161A1 (en) 2008-03-20

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PCT/IB2007/002575 WO2008032161A1 (en) 2006-09-12 2007-09-07 A personal token comprising a compression agent

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002082261A2 (en) * 2001-04-05 2002-10-17 Schlumberger Systèmes Compression of codes of an application written in high-level language, for use in mobile telephony.
US20060142997A1 (en) * 2002-12-27 2006-06-29 Per Jakobsen Predictive text entry and data compression method for a mobile communication terminal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002082261A2 (en) * 2001-04-05 2002-10-17 Schlumberger Systèmes Compression of codes of an application written in high-level language, for use in mobile telephony.
US20060142997A1 (en) * 2002-12-27 2006-06-29 Per Jakobsen Predictive text entry and data compression method for a mobile communication terminal

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