초록 ▼

A computer-based system securely transmitting and authenticating a transaction input by a user while retaining the anonymity of the user with respect to content of the transaction, including a device encoding the content of the transaction input by the user with a key known only to another device, e

A computer-based system securely transmitting and authenticating a transaction input by a user while retaining the anonymity of the user with respect to content of the transaction, including a device encoding the content of the transaction input by the user with a key known only to another device, encoding other portions of the transaction with another key known only to a secure transaction server, and sending the encoded content of the transaction and the encoded other portions of the transaction to the secure transaction server to authenticate an identity of the user of the device, wherein the secure transaction server decodes the other portions of the transaction and sends the encoded content of the transaction to the another device to be finally decoded.

대표청구항 ▼

What is claimed is: 1. A computer-based system securely transmitting and authenticating a transaction input by a user while retaining the anonymity of the user with respect to content of the transaction, comprising:a first device receiving the content of the transaction input at the first device and

What is claimed is: 1. A computer-based system securely transmitting and authenticating a transaction input by a user while retaining the anonymity of the user with respect to content of the transaction, comprising:a first device receiving the content of the transaction input at the first device and transmitting, to a second device, the transaction content including information identifying the first device and the second device;whereinthe second device encoding the transaction content input at the first device with a code key KVSi, sending the transaction content that is encoded with the code key KVSi to the first device,the first device generating a first message by further encoding the information identifying the first and second devices and the transaction content encoded with the code key KVSi with an independently generated first device changing key derived from both a user input non-transmitted parameter and a first device parameter generated for each transaction based upon a stored first device parameter, andthe second device generating a second device encoded second message by encoding the transaction content encoded with the code key KVSi and the information identifying the first and second devices, with an independently generated second device key; anda third devicereceiving the encoded second message from the second device and receiving the encoded first message of the first device,decoding only the encoding by the first and second device keys of the received encoded first and second messages based upon the third device independently generating the respective first and second device keys to:authenticate an identity of the user of the first device and authenticate the first device,authenticate the second device andauthenticate an occurrence of the transaction by matching the decoded messages of the first and second devices based upon the information identifying the first and second devices for confirming input of the transaction content to involve intended first and second devices, andforwarding the encoded transaction content encoded with the code key KVSi to a fourth device;wherein the fourth device receiving the encoded transaction content encoded with the code key KVSi and using the code key KVSi to determine the transaction content input by the user of the first device.