Kent Ridge Digital Labs

Agency for Science, Technology and Research

Feng Bao

Huijie Robert Deng

Jianying Zhou

Robert Huijie Deng

Yongdong Wu

A method of generating an authentication for updating a mobile communications device'slocation to a second communications deviceis disclosed herein. The mobile communications deviceis registered to a home networkcomprising a proxy server but roams to a foreign networkwith a different network number. The method proposes that, at the time of performing the location update, the second communications device and the proxy server each provides an input to a hash function to generate a shared secret; and using the shared secret as the authentication when the proxy server or the mobile communications device transmits the location update to the second communications device.

Method of generating an authentication

Party A encrypts unique first digital data and generates an authentication certificate authenticating that the encrypted first data is an encryption of the first data. Party B verifies the encrypted first data using the authentication certificate. When the encrypted first data is verified by B, A verifies second unique digital data received from B. When the second data is verified by A, B verifies unencrypted first data received from A. When the unencrypted first data is not verified by B, B sends the encrypted first data and the second data to party C. C decrypts the encrypted first data to obtain the decrypted first data, and verifies the decrypted first and the second data. When the decrypted first and the second data are verified, C sends the decrypted first data to B and the second data to A.

Method of exchanging digital data

A method and apparatus for encrypting and decrypting data is disclosed which employs two or more cryptographic algorithms to achieve high throughput without compromizing security. The invention is especially useful for software implementation to protect large amounts of multimedia data over high-speed communication channels.

Method and apparatus for encrypting and decrypting data

A method, an apparatus, and a computer program product for remote authentication are disclosed. The methods are based on exchanging of signals representing remote party's biometrics information (such as acoustic waveforms) and have application in secure telephony or video-conferencing communications over open networks. The apparatus includes a speech encoding/decoding module (), a control module (), an encryption/decryption module (), a key generator (), a Diffie Hellman key exchange system (), a timer module () for measuring time between a challenged statement and a corresponding response statement, an input/output (I/O) module () for transmitting and receiving data via a communications channel

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Singapore, Singapore

Feng Bao