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185 results about "Operator system" patented technology

Given a unital C*-algebra A, a *-closed subspace S containing 1 is called an operator system. One can associate to each subspace M⊆A of a unital C*-algebra an operator system via S:=M+M*+ℂ1. The appropriate morphisms between operator systems are completely positive maps. By a theorem of Choi and Effros, operator systems can be characterized as *-vector spaces equipped with an Archimedean matrix order.

Secure entry of a user-identifier in a publicly positioned device

A method for secure entry of a user-identifier in a publicly positioned device can include establishing a private communications link between a user and the publicly positioned device; dividing the user-identifier into at least two portions; separately prompting the user for each portion of the user-identifier; prompting the user for a combination of random data and the user-identifier; and, discarding the random data from the combination. In the preferred embodiments, the publicly positioned device can have a visual interface through which the user can be visually prompted for the random data and the user-identifier. Alternatively, the publicly positioned device can have a telephone interface through which the user can be audibly prompted for the random data and the user-identifier. In the case of a visual display, the private communications link can be established by linking the publicly positioned device to active glasses having a shuttered display. The opening and closing of the shuttered display can be synchronized with the display of the prompts in the visual interface such that only the wearer of the active glasses can view the prompts. In the case of a telephone interface, an telephone operator system, for example an Interactive Voice Response system or a human operator, can provide the prompts audibly through the telephone interface.
Owner:IBM CORP

System for realizing WAP mobile banking transaction security control and method thereof

The invention discloses a system for realizing WAP mobile banking transaction security control and a method thereof. The system comprises a user terminal, a WEB server, a WAP portal server, a WAP transaction server and mobile communication operator system equipment, wherein, the WEB server is used for providing domain name address service and transferring a transaction request received from the user terminal to the WAP portal server; the WAP portal server is used for acquiring the mobile phone number of the user terminal, generating a mobile token according to operator mobile phone binding relations and sending the mobile token and the transaction request to the WAP transaction server; the WAP transaction server is used for verifying validity of the mobile token and checking whether user operator binding information is consistent with token information; the mobile communication operator system equipment is used for providing an interface to the WAP portal server and the WAP portal server acquires the mobile phone number by communicating with the mobile communication operator system equipment. By adopting the invention, the user can be prevented from visiting the WAP mobile banking by the internet, thereby effectively improving security of visiting the mobile banking.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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