Acoustic encoding of dynamic identification codes

• US 8,755,501 B2
• Filed: 06/11/2007
• Issued: 06/17/2014
• Est. Priority Date: 12/19/1999
• Status: Active Grant

• Current Assignee: Cidway Technologies, Ltd.
• Original Assignee: Encotone Ltd.
• Inventors: Labaton, Isaac J
• Primary Examiner(s): Phan, Joseph T
• Application Number:
  US11/761,225
• Publication Number:
  US 20070232355A1
• Time in Patent Office: 2,563 Days
• Field of Search: 379/188
• US Class Current: 379/188
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/4097 using mutual authentication between devices and transaction partners
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system

Abstract

Methods for identifying a remote user of a portable device by using the portable device to encode sound corresponding to the identification of the remote user. The sound is received by a microphone external to the portable device and converted to an electrical signal. The electrical signal is transmitted to a processing device, that may be remote to the microphone, where the electrical signal is processed and the identification of the remote user is completed.

Claims

1. A method for digitally signing data comprising the steps of:

providing a cellular phone having capabilities to store a private key, to accept locally entered data from a user, to digitally sign the locally entered data using the private key such that one or more digital strings are produced;

directly entering the data, by the user, in the cellular phone;

computing, by the cellular phone, a digital signature of the data using the private key;

encoding, by the cellular phone, the digitally signed data to sound; and

generating, by the cellular phone, the digitally signed data as acoustic sound waves.

2. The method of claim 1 further comprising the step of receiving the acoustic sound waves by an external microphone.

3. The method of claim 1, wherein the cellular phone further has the capability to accept the locally entered data by at least one of a keypad, as sound using speech recognition techniques, and as sound transmitted to and recorded by the cellular phone.

4. The method of claim 1, wherein the cellular phone has a speaker, and further comprising the step of encoding the digitally signed data to sound using the cellular phone speaker.

5. The method of claim 1, wherein the cellular phone further has the capability to generate the private key as well as a corresponding public key.

6. The method of claim 1, wherein the cellular phone uses an inserted chip-card for storing the private key.

7. The method of claim 1, wherein the cellular phone uses an inserted chip-card for computing the digital signature.

8. The method of claim 1 further comprising the steps of identifying the user of the cellular phone;

and authorizing the use of the private key by biometrical means.

9. The method of claim 1 further comprising the steps of identifying the user of the cellular phone;

and authorizing the use of the private key by requesting a personal identification number (PIN).