Patent ID: 7870077

Claim:
A method of buying goods and billing therefor using short message service (SMS) in a mobile telecommunication network, the method comprising: receiving information regarding goods which a buyer requested to buy from a mobile terminal, wherein the goods information includes at least a predetermined goods code classified according to goods and/or services associated with a shopping mall server; generating, at a mobile telecommunication server, a primitive authentication code corresponding to the goods information in order to approve the mutual authentication between the buyer and the shopping mall server; storing, at the mobile telecommunication server, the primitive authentication code; partitioning, at the mobile telecommunication server, the stored primitive authentication code into a first authentication code and a second authentication code with the use of a predetermined partition algorithm; transmitting the first authentication code to the mobile terminal through a SMS center (SMSC); generating purchase information which includes the goods information and the second authentication code; transmitting the purchase information to the shopping mall server; receiving, at the mobile telecommunication server, the first and second authentication codes from the mobile terminal and shopping mall server, respectively; synthesizing, at the mobile telecommunications server, the received first and second authentication codes with the use of a predetermined synthesis algorithm to generate a synthesized authentication code; determining, at the mobile telecommunication server, whether or not the synthesized authentication code is identical to the primitive authentication code; receiving, at the mobile telecommunication server, a payment option from the mobile terminal, wherein the payment option is one of the following: i) payment via the buyer's mobile phone fees, ii) credit card payment, iii) account transfer, and iv) an online payment; and billing, based on the received payment option for the buyer's goods purchase when the synthesized authentication code is identical to the primitive authentication code.