WO2001001644A1 - Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof - Google Patents
Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof Download PDFInfo
- Publication number
- WO2001001644A1 WO2001001644A1 PCT/KR2000/000689 KR0000689W WO0101644A1 WO 2001001644 A1 WO2001001644 A1 WO 2001001644A1 KR 0000689 W KR0000689 W KR 0000689W WO 0101644 A1 WO0101644 A1 WO 0101644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mobile station
- web server
- data
- key
- personal information
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/04—Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0823—Network architectures or network communication protocols for network security for authentication of entities using certificates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/126—Applying verification of the received information the source of the received data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
- H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
Definitions
- the present invention relates to an apparatus and method for securing the information of a subscriber in a mobile communication system in communication with the Internet.
- a recent development in the mobile communication has enabled users to execute the so-called electronic trade through the Internet using wireless communication technology.
- the most important thing is to prevent the leakage of the personal information of a client while he or she is making a connection to the Internet web server, which provides electronic trade contents.
- the goal of the security system is to secure the personal information of the user while using the Internet so that an unwanted user can not tap into the personal information of the user, such as a password to access the web server, credit card number with its related password to make transaction, etc.
- the conventional security system for securing confidential information used in the wired Internet communication typically employs a Secure Socket Layer (SSL), which is proposed by the Netscape Company in the United States.
- SSL Secure Socket Layer
- the SSL system encodes the information from a client in a known manner readable only by the web server.
- the SSL system may not be properly employed for the wireless or the mobile Internet communication system due to the reasons discussed below.
- the mobile station has a limited memory capacity that is inadequate to execute the web applications as in the SSL system.
- the conventional mobile station is not designed to execute such web applications.
- the mobile station in order to make a wireless connection to the Internet web server, the mobile station first has to be connected with the pertinent Internet service server to request the web content services.
- the security system between the web server and the service server should have the same standard as that of between the service server and the mobile station, in order to properly perform and protect personal information in the whole network.
- the conventional security system does not provide a uniform standard between them.
- FIG. 1 depicts a conventional mobile communication network system provided in the conventional security system.
- the SSL system is employed between the service server and the web server, but a wireless security system with a different system is employed between the mobile station and the service server.
- the whole network does not have the same standard between them.
- the conventional security system designed for the wired Internet communication system can not be properly applied to the wireless Internet communication system, thus impeding the booming market of the electronic trade through the Internet using mobile communication technology.
- an apparatus for securing the user's secret information transmitted from a mobile station to a web server through an Internet service server wherein the data relating to the user's secret information is selected in response to the data request from the mobile station and/or web server, the selected data is enciphered in a given format, and the enciphered data is directly transmitted to the web server and/or the mobile station without further intervention by the service server.
- FIG. 1 is a schematic diagram for illustrating the conventional mobile Internet communication system with the conventional mobile security system
- FIG. 2 is a schematic diagram similar to FIG. 1 and illustrates a mobile security system according to the present invention
- FIG. 3 is a schematic diagram for illustrating the procedure of transmitting an ordinary web document and the secret data according to the inventive security system in the mobile Internet communication;
- FIG. 4 is a flow diagram for illustrating the process of securing the user's information according to the inventive mobile Internet communication.
- a digital/electronic signature can be encrypted using various known methods.
- the enciphering algorithm suitably applied according to the present invention is a Riverst-Shamier-Adleman (RSA) public key algorithm, which is the most widely used algorithm in the current electronic trade security system.
- the RSA algorithm provides both enciphering and electronic signatures (or encryption keys) based on prime factorization.
- the principle of the RSA algorithm is based on the fact that it is easier to calculate the product of two prime numbers "p" and “q”, but it is difficult to extract the "p” and “q” from the product "n", which is obtained by multiplying "p” and "q”. That is, two keys, one being the public key and the second the secret key, are used so that whenever one encrypt something with the secret key, it can be decrypted only with the public key, and vice versa.
- the RSA algorithm generates the public key and secret key used for enciphering/deciphering a session key.
- the public key is used by the client to encrypt the session key, which then sends the encrypted session key back to the server.
- the server decrypts the session key with its secret key and establishes the secured connection with the client.
- the algorithm for generating the session key uses a SEED symmetric key algorithm, which is based on the Korean Data Encryption Standard and uses the 128-bit block enciphering algorithm developed by the Korea Information Security Agency (KISA) for public electronic trade.
- the SEED symmetric algorithm features 8-, 16-, and 32-bit data processing, deciphering in the way of block enciphering, and the input/output phrase and input key is 128bits. It is also designed to safeguard against the Differential Cryptanalysis (DC)/ Linear Cryptanalysis (LC) and includes the enciphering/deciphering speed faster than three times that of the Data Encryption Standard (DES).
- DC Differential Cryptanalysis
- LC Linear Cryptanalysis
- DES Data Encryption Standard
- the SEED symmetric key algorithm is applied with 12 rounds to generate the session key by which the data of the user's information is enciphered.
- the mobile station, the Internet service server, and the web server are operated according to the present invention in the mobile Internet communication as described below.
- the mobile phone is provided with an inventive security program required for connecting with the web server to receive the public key and to internally generate the session key used during a security transaction.
- the session key is used to encipher and decipher the data.
- the enciphering is performed according to the RSA algorithm and the 128bits SEED algorithm.
- the web server using the RSA algorithm, generates the public key and the secret key to enable the mobile station to perform the security transaction by sending the public key to the mobile station.
- the received public key is used to generate the session key to encipher the data transmitted by the mobile station, and the mobile station generates the session key using the SEED algorithm.
- the web server uses the secret key to decipher the session key used to encipher the data transmitted by the mobile station.
- the web server deciphers the session key, which is generated using the SEED algorithm, using the RSA secret key and the deciphered session key is used to decipher the enciphered data according to the enciphering and deciphering of the 128bits symmetric key SEED.
- the data processing between the mobile station and the web server is initiated when the web server generates a pair of its own public key and secret key.
- the public key is sent to the service server, then revised and sent as a certificate to the mobile station upon a request.
- the mobile station has been authorized for use and the service sever acts as an intermediary between the mobile station and the web server by forwarding data as needed.
- the mobile station stores the public key to internally generate a session key to encipher the confidential data to be sent to the web server.
- the mobile station enciphers the received public key to generate the symmetric key to be sent to the web server.
- the web server deciphers the symmetric key with its own secret key.
- the web server deciphers the enciphered data received from the mobile station.
- the web server enciphers data to be sent to the mobile station using the symmetric key received from the mobile station.
- the mobile station in return deciphers the enciphered data received from the web server using the symmetric key that is previously sent to the web server.
- the service server is provided as a proxy server.
- MMS mobile micro security system
- the hacker can not tap into the data packet as it travels from the mobile network to the service server via the Internet. This is achieved as the path between the mobile communication network and the service server makes the data packet, enciphered by the mobile station, in form of 128bits to the service server via the Internet, thus preventing a hacker from hacking its content.
- the internal network of the service server is protected by a firewall with a separate hacking-detective system according to the present invention.
- the service server simply transfers the enciphered data from the mobile station to the web server without any processing operation therein.
- the service server and the web server are usually connected through an exclusive line through which the 128bits-enciphered data is transmitted, thus making it difficult for the hacker to access.
- the hacking-detective system is realized because the web server receives the symmetric key randomized by the mobile station according to 128bits SEED algorithm. Then, the web server securely deciphers the 128bits-enciphered data received from the mobile station using the RSA secret key.
- the enciphered data of the mobile station may be deciphered only by the web server, and the enciphered data from the web server may be deciphered only by the mobile station.
- the SEED symmetric key of the web server can also be transferred to the mobile station in a reverse operation.
- Communication between the mobile station and the web server proceeds with each message enciphered by the session key before being sent and deciphered by the session key at the receiving end, wherein session key generated from the mobile station is enciphered using the public key and generated as symmetric key.
- the mobile station is installed with the security program for connecting with the security service server.
- the security program features a function to receive the public key from the web server and in return internally generates a session key to encipher personal information and is sent from the mobile station to the web server. That is, the session key is used to encipher and decipher the secret data according to the RSA enciphering and the 128bits SEED symmetric key.
- FIG. 3 schematically shows the transmission of an ordinary web document without any enciphering and the transmission of secret data that is enciphered according to the present invention.
- the service server transmits an ordinary web document between the mobile station and the web server through a proxy server and transmits the personal data between them without any additional processing operation.
- two different data transmission are operated according to the present invention due to the limited data amount that can be transmitted and processed in the wireless Internet communication.
- the personal/secret data which needs to be protected from an unwanted third party, is directly transmitted between the mobile station and the web server.
- the process of securing the user's information when the mobile station attempts to connect with the web server is described in connection with FIG.
- the mobile station registers the public key received of the service server, in step 310, which is hard-coated on the web browser of the mobile station.
- the service server registers the public key, certificate, and address of the web server along with its certificate version information, which are periodically revised according to the corresponding data delivered by the web server.
- the mobile station requests a connection with the web page to receive electronic files in response to the user's request. This request is directly transmitted to the web server through the "GET" command for requesting the electronic document that can be accessed with the personal/secret information.
- the service server does not perform any additional processing operation to the GET command being transferred to the web server.
- the web server may be a banking server, a stock dealing server, etc.
- the web server being requested with the connection determines the data to be enciphered upon receiving the request from the mobile phone, then informs the result to the mobile phone through the service server.
- the data to be enciphered includes personal/secret information, such as a password and a credit card number. Other data such as the user's login ID, ordinary character information, etc., does not require enciphering so that the amount of the data enciphered can be reduced. This is helpful because the mobile Internet communication is very limited in the amount of data that can be processed compared to the wired Internet communication.
- the service server sends the presently registered certificate version, which periodically revised by the web server, to the mobile station.
- the certificate version provides updated information about the host name, the IP address, and the public key of the web server that can be used to authenticate message source. Then, the mobile station determines whether the received certificate version is the same as the previously registered version. The previously registered version is downloaded from the previous access to the same web server by the mobile station. If they are the same, the enciphering is performed with its previously registered version.
- the mobile station requests the service server to send a new version of certificate.
- the request is made by a "CERT" command, which is prearranged protocol between the mobile station and the service server for sending the certificate.
- the service server sends the presently registered certificate of the web server in step 320. That is, if there were a request for a new certificate version by the mobile station, the service server (or proxy server) having the updated information that is periodically downloaded from the web server (content server), sends a response message, which is comprised of a header and a text.
- the digital SIGN signature for the public key of the web server requested by the mobile station
- the certificate host name, IP address, and public key
- the mobile station receives the response message from the service server and authenticates the text of the certificate by validating the digital SIGN in the header. Namely, the mobile station checks whether the digital SIGN corresponds to that of the pubic key of the web server, and also checks for whether the text is damaged. If the digital SIGN is confirmed, the mobile station retrieves the public key included in the certificate and revises its certificate table therein.
- the session key is generated using the public key contained in the certificate for the transmission of the user's information under security. As described above, the session key is generated according to the 128bits SEED algorithm, which is used to encipher the personal data to be transmitted by the mobile station user.
- the user's information is enciphered by the session key to achieve the security data.
- the session is enciphered by the public key to generate the symmetric key.
- step 330 the symmetric key obtained by enciphering the session key using the public key and the data enciphered by the session key are transmitted to the web server via the service server.
- the service server does not perform any further operation to the data being transmitted to the web server.
- step 322 the web server deciphers, using the secret key, the symmetric key included in the user's information received from the mobile station to generate a session key.
- step 334 the web server deciphers, using the generated session key, the user's information, i.e., the security data enciphered by the mobile station so that the original data can be retrieved and the original data can be processed by the web server accordingly.
- a hash is generated using a hash function (i.e.,
- MD5 Message-Digest 5
- the MD5 is the functional protocol used for enciphering, of which, if the result agrees with the certificate, it is considered that the data transmission has been normally achieved without any external hacker.
- the 128bits hashing value i.e., a character series of 128bits
- the mobile station takes the encrypted hash value and decrypts it with the public key of the service server.
- the mobile station To verify that the certificate has not been tampered with, the mobile station generates the certificate hash value again and compares it with the decrypted hash value - if both match, the certificate is valid. Accordingly, a secure hash value is used to authenticate messages, and to ensure that the data sent from the service server is not tampered en-route. Then, it is verified that the public key of the web server is valid to perform the step 324.
- the mobile station may likewise decipher the enciphered information from the web server using the public key and the secret key.
- the HTML document for securing the user's information by enciphering/deciphering is prepared and uploaded to the web server.
- the distinction by the Internet search engine between the HTML documents requiring enciphering/deciphering from the ordinary HTML document is made by using the class attribution defined in the Internet web protocol. This may be achieved by designating the class as the security indicator "SCURE," which represents the corresponding field to be enciphered.
- this invention provides an apparatus for securing the user's information for electronic trade in the mobile Internet communications.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0006860-8A BR0006860A (en) | 1999-06-29 | 2000-06-29 | Device to ensure user information on a mobile communication system connected to the internet and method of the same |
JP2001506198A JP2003503901A (en) | 1999-06-29 | 2000-06-29 | User information security apparatus and method in mobile communication system in Internet environment |
EP00940992A EP1101331A4 (en) | 1999-06-29 | 2000-06-29 | Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
IL14169200A IL141692A0 (en) | 1999-06-29 | 2000-06-29 | Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990025510A KR20010004791A (en) | 1999-06-29 | 1999-06-29 | Apparatus for securing user's informaton and method thereof in mobile communication system connecting with internet |
KR1999/25510 | 1999-06-29 |
Publications (1)
Publication Number | Publication Date |
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WO2001001644A1 true WO2001001644A1 (en) | 2001-01-04 |
Family
ID=19597296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2000/000689 WO2001001644A1 (en) | 1999-06-29 | 2000-06-29 | Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1101331A4 (en) |
JP (1) | JP2003503901A (en) |
KR (1) | KR20010004791A (en) |
CN (1) | CN1148035C (en) |
BR (1) | BR0006860A (en) |
IL (1) | IL141692A0 (en) |
TR (1) | TR200100592T1 (en) |
WO (1) | WO2001001644A1 (en) |
Cited By (20)
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WO2003007569A1 (en) * | 2001-07-12 | 2003-01-23 | Huawei Technologies Co., Ltd. | Network structure for encrypting of mobile communication system terminal and the method of realizin it |
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- 2000-06-29 JP JP2001506198A patent/JP2003503901A/en active Pending
- 2000-06-29 IL IL14169200A patent/IL141692A0/en unknown
- 2000-06-29 BR BR0006860-8A patent/BR0006860A/en not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
BR0006860A (en) | 2001-07-10 |
IL141692A0 (en) | 2002-03-10 |
CN1316147A (en) | 2001-10-03 |
EP1101331A4 (en) | 2005-07-06 |
EP1101331A1 (en) | 2001-05-23 |
TR200100592T1 (en) | 2001-07-23 |
CN1148035C (en) | 2004-04-28 |
KR20010004791A (en) | 2001-01-15 |
JP2003503901A (en) | 2003-01-28 |
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