# US 2013/0159705 A1 · Security system for handheld wireless devices using time-variable encryption keys

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- Number: US 2013/0159705 A1
- Document ID: US20130159705A1
- Status: Published application
- Kind: A1
- Application number: 13/723,240
- Filed: 2012-12-21
- Published: 2013-06-20
- Earliest claimed: 2006-06-26
- Assignees: Mlr, LLC
- Inventors: Charles M. LEEDOM, JR.
- Web page: https://patentgrep.com/patent/US20130159705A1

## CPC

- H04W 12/04: Key management, e.g. using generic bootstrapping architecture [GBA]
- G10L 15/18: using natural language modelling
- G10L 15/22: Procedures used during a speech recognition process, e.g. man-machine dialogue
- H04L 9/006: {involving public key infrastructure [PKI] trust models (network architecture or network communication protocol for supporting authentication of entities using certificates in a packet data network H04L63/0823)}
- H04L 9/0869: {involving random numbers or seeds}
- H04L 9/3263: {involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements (network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823)}
- H04L 63/0442: {wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption (cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30)}
- H04L 63/068: {using time-dependent keys, e.g. periodically changing keys (cryptographic mechanisms or cryptographic arrangements for controlling usage of secret information H04L9/088)}
- H04W 12/0431: Key distribution or pre-distribution; Key agreement
- H04W 12/06: Authentication
- H04W 12/33: using wearable devices, e.g. using a smartwatch or smart-glasses
- G10L 2015/223: {Execution procedure of a spoken command}
- H04L 63/0823: {using certificates (cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263)}
- H04L 2209/80: Wireless
- H04W 84/00: Network topologies
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

In one embodiment, the invention provides a portable wireless personal communication system for cooperating with a remote certification authority to employ time variable secure key information pursuant to a predetermined encryption algorithm to facilitate convenient, secure encrypted communication. The disclosed system includes a wireless handset, such as PDA, smartphone, cellular telephone or the like, characterized by a relatively robust data processing capability and a body mounted key generating component which is adapted to be mounted on an individual's body, in a permanent or semi-permanent manner, for wirelessly broadcasting, within the immediate proximity of the individual, a secret or private key identifying signal corresponding to a time variable secure key information under the control of the certification authority. The key identifying signal is generated in a format that facilitates secure wireless communication with the individual in accordance with a predetermined encryption algorithm including a PKI encryption algorithm. The disclosed system may be used with a console for coordinating access to a variety of different communication system and networks.

## Claims

### Claim 1

A portable wireless personal communication system for cooperating with a remote certification authority to employ time variable secure key information pursuant to a predetermined encryption algorithm to facilitate convenient, secure encrypted communication, comprising
a. a body mounted key generating component adapted to be mounted on an individual's body for wirelessly broadcasting within the immediate proximity of the individual a key signal corresponding to the time variable secure key information under the control of the certification authority in order to facilitate secure wireless communication with the individual in accordance with the encryption algorithm; and
b. a handheld wireless component adapted to receive the key signal broadcast by the key generating component for use in implementing secure communication in accordance with the predetermined encryption algorithm via signals transceived over a wireless link that forms part of a communication channel connected at one end to said handheld wireless component and connected at the other end to third parties that are or have communicated with the certification authority in accordance with the encryption algorithm,
whereby the certification authority may operate in accordance with the predetermined encryption algorithm to facilitate secure communication between the individual and one or more of the third parties.

### Claim 2 (depends on 1)

The portable wireless personal communication system as defined in claim 1 is adapted to operate with a certification authority that implements a PKI type encryption algorithm wherein the certification authority certifies, as authentically associated with the individual on whose body is mounted the key generating component, a sequentially series of public keys corresponding one to one to a sequentially series of secret or private keys generated from time to time by said body mounted key generating component in accordance with a predetermined PKI key generation algorithm and wherein said time variable key signal broadcast by said body mounted key generating component is the private key corresponding to the current public key used by the certification authority to facilitate secure communication between third parties and the individual who has been authenticated by the certification authority.

### Claim 3 (depends on 2)

The portable wireless personal communication system as defined in claim 2 wherein said PKI key generation algorithm employs a predetermined sequence of paired secret or private keys and public keys wherein the private keys and the public keys are generated and provided, respectively, to the body mounted key generating component and to the certification authority to be used in the future in accordance with the PKI key generating algorithm to cause the current private key broadcast by said body mounted key generating component to properly correspond to the public key provided by the certification authority to facilitate third party communication with the individual.

### Claim 4 (depends on 1)

The portable wireless personal communication system as defined in claim 1, wherein the time variable key generated by said body mounted key generating component is an authenticating key that uniquely identifies to the certification authority the individual upon which said body mounted key generating component is mounted and wherein said authenticating key and the corresponding secure key information held by the certification authority change in time in accordance with said key generating algorithm in a manner to permit the certification authority to uniquely and securely certify the identity of the individual to whom the body mounted key generating component was provided.

### Claim 5 (depends on 4)

The portable wireless personal communication system as defined in claim 4, wherein the key generating algorithm implemented by said body mounted key generating component includes a pseudo random number generation function corresponding to a similar pseudo random number generation function performed by the certification authority to permit accurate authentication over time of the identity of the individual to whom the body mounted key generating component has been issued despite the fact that the authenticating key is time variable and further wherein the pseudo random number generator used by the key operates to render subsequent prior authenticating keys unpredictable.

### Claim 6 (depends on 1)

The portable wireless personal communication system as defined in claim 1, wherein said body mounted key generating component a body mount allowing for semi-permanent mounting on the individual's body.

### Claim 7 (depends on 6)

The portable wireless personal communication system as defined in claim 6, wherein said body mount includes means for mounting said body mounted key generating component in a wrist watch, ring, necklace, or bracelet.

### Claim 8 (depends on 1)

The portable wireless personal communication system as defined in claim 1, wherein said body mounted key generating component is a integrated circuit within a housing adapted to be permanently mounted on the individual subcutaneously.

### Claim 9 (depends on 1)

The portable wireless personal communication system as defined in claim 1, wherein said handheld wireless component is a cellular telephone.

### Claim 10 (depends on 3)

The portable wireless personal communication system as defined in claim 3 adapted to operate within a PKI in accordance with an algorithm that allows a sender to create a cipher text from a message text using the public key provided by the certification authority for a participating party that can only be decrypted using the secret or private key corresponding to that party's public key, wherein said handheld wireless component is capable of recovering a message text from a cipher text created by a third party using the public key currently being provided by the certification authority provided the handheld wireless component has received the corresponding secret or private key and provided the certification authority, third party and handheld wireless component operate in accordance with the same PKI algorithm.

### Claim 11 (depends on 1)

The portable wireless personal communication system as defined in claim 1, wherein said body mounted key generating component includes a processor adapted to generate a time variable key that corresponds to the time variable secure key information held by the certification authority.

### Claim 12 (depends on 11)

The portable wireless personal communication system as defined in claim 11, wherein said body mounted key generating component includes a radio transmitter for broadcasting the time variable key within a zone in close proximity to the individual on whose body said body mounted key generating component is mounted and said body mounted key generating component includes encrypting means for broadcasting the time variable key in an encrypted form and further wherein said hand held wireless component includes decrypting means for recovering the time variable key from the signal broadcasted by said body mounted key generating component.

### Claim 13 (depends on 12)

The portable wireless personal communication system as defined in claim 12, wherein said body mounted key generating component includes a transponder circuit adapted to cause said body mounted key generating component to broadcast the time variable key only upon receipt of a wireless signal requesting a time variable key created and broadcast by said hand held wireless component that has been encrypted in a manner to cause it to be decrypted only by said transponder circuit.

### Claim 14 (depends on 13)

The portable wireless personal communication system as defined in claim 13, wherein each time said transponder circuit is activated, the current time variable key is changed to the next key in the sequence of time variable keys and the certification authority is notified of the need to change to a corresponding time variable key information.

### Claim 15 (depends on 11)

The portable wireless personal communication system as defined in claim 11, wherein said body mounted key generating component includes a pseudo random number generator that is coordinated with a pseudo random number generator operated by said certification authority such that corresponding keys can be generated by said certification authority and by said body mounted key generating component.

### Claim 16

A certification apparatus for secure communication and unique identification by implementing an encryption algorithm within an encryption infrastructure employing secret or private keys including a wireless network having individual subscribers who access the wireless network using handheld wireless components for implementing a compatible encryption algorithm using time variable secret or private keys uniquely associated with the respective individual subscribers, comprising
a plurality of key generating components adapted to be mounted, respectively, on the bodies of the subscribers, each said key generating component including
key generating means for generating a time variable key for use in secure communication uniquely identifying the individual on which the component is mounted, and
wireless transceivers for broadcasting, in a limited zone surrounding the individual on which the key generating component is mounted, a time variable key that can be used in the handheld component to create an encrypted message suitable to be broadcast by the handheld device over the wireless network; and
a certification authority for implementing the encryption algorithm to allow encrypted communication between the certification authority and each of the individual subscribers over the wireless network, including a memory for storing an operating program and for storing subscriber identification information adapted to be associated with time variable key information corresponding to the time variable keys generated in each of the corresponding key generating components and used by the respective handheld components to form an encrypted message for transmission over the wireless network to the certification authority wherein the certification authority can authenticate any encrypted message forwarded to said certification authority as corning from a particular individual by implementing an authentication routine of the encryption algorithm using the associated time variable key information.

### Claim 17 (depends on 16)

The certification apparatus as defined in claim 16, wherein said certification authority implements a PKI type encryption algorithm including certifying, as authentically associated with the individual on whose body is mounted the key generating component, a sequentially series of public keys corresponding one to one to a sequentially series of secret or private keys generated from time to time by said body mounted key generating component in accordance with a predetermined PKI key generation algorithm and wherein said time variable key signal broadcast by said body mounted key generating component is the private key corresponding to the current public key used by the certification authority to facilitate secure communication between third parties and the individual who has been authenticated by the certification authority.

### Claim 18 (depends on 17)

The certification apparatus as defined in claim 17, wherein said PKI key generation algorithm employs a predetermined sequence of paired private keys and public keys wherein the private keys and the public keys are generated and provided, respectively, to the body mounted key generating component and to the certification authority to be used in the future in accordance with the PKI key generating algorithm to cause the current private key broadcast by said body mounted key generating component to properly correspond to the public key provided by the certification authority to facilitate third party communication with the individual.

### Claim 19 (depends on 16)

The certification apparatus as defined in claim 16, wherein the time variable key generated by said body mounted key generating component is an authenticating key that uniquely identifies to the certification authority the individual upon which said body mounted key generating component is mounted and wherein said authenticating key and the corresponding secure key information held by the certification authority change in time in accordance with said key generating algorithm in a manner to permit the certification authority to uniquely and securely certify the identity of the individual to whom the body mounted key generating component was provided.

### Claim 20 (depends on 19)

The certification apparatus as defined in claim 19, wherein the key generating algorithm implemented by each said body mounted key generating component includes a pseudo random number generation function corresponding to a similar pseudo random number generation function performed by the certification authority to permit accurate authentication over time of the identity of the individual to whom the body mounted key generating component has been issued despite the fact that the authenticating key is time variable and further wherein the pseudo random number generator used by the key operates to render subsequent prior authenticating keys unpredictable.

### Claim 21 (depends on 16)

The certification apparatus as defined in claim 16, wherein each said body mounted key generating component a body mount allowing for semi-permanent mounting on the individual's body.

### Claim 22 (depends on 21)

The certification apparatus as defined in claim 21, wherein said body mount includes means for mounting said body mounted key generating component in a wrist watch, ring, necklace, or bracelet.

### Claim 23 (depends on 16)

The certification apparatus as defined in claim 16, wherein said body mounted key generating component is a integrated circuit within a housing adapted to be permanently mounted on the individual subcutaneously.

### Claim 24 (depends on 18)

The certification apparatus as defined in claim 18, wherein said certification authority is adapted to implement a PKI in accordance with an algorithm that allows a sender to create a cipher text from a message text using the public key provided by said certification authority for a participating party that can only be decrypted using the private key corresponding to that party's public key, wherein said handheld wireless component is capable of recovering a message text from a cipher text created by a third party using the public key currently being provided by the certification authority provided the handheld wireless component has received the corresponding private key and provided the certification authority, third party and handheld wireless component operate in accordance with the same PKI algorithm.

### Claim 25 (depends on 16)

The certification apparatus as defined in claim 16, wherein said body mounted key generating component includes a processor adapted to generate a time variable key that corresponds to the time variable secure key information held by the certification authority.

### Claim 26 (depends on 25)

The certification apparatus as defined in claim 25, wherein said body mounted key generating component includes a radio transmitter for broadcasting the time variable key within a zone in close proximity to the individual on whose body said body mounted key generating component is mounted and said body mounted key generating component includes encrypting means for broadcasting the time variable key in an encrypted form and further wherein said hand held wireless component includes decrypting means for recovering the time variable key from the signal broadcasted by said body mounted key generating component.

### Claim 27 (depends on 26)

The certification apparatus as defined in claim 26, wherein said body mounted key generating component includes a transponder circuit adapted to cause said body mounted key generating component to broadcast the time variable key only upon receipt of a wireless signal requesting a time variable key created and broadcast by said hand held wireless component that has been encrypted in a manner to cause it to be decrypted only by said transponder circuit.

### Claim 28 (depends on 27)

The certification apparatus as defined in claim 27, wherein each time said transponder circuit is activated, the current time variable key is changed to the next key in the sequence of time variable keys and the certification authority is notified of the need to change to a corresponding time variable key information.

### Claim 29 (depends on 16)

The certification apparatus as defined in claim 16, further including a personal communication console adapted to wirelessly communicate with one of the wireless handheld devices wherein said personal communication is connected with a landline telephone communication network and a cable communication network line and wherein said console includes a communication controller and a memory for storing changeable user criteria for the type of communication service desired and wherein said controller operates to direct communication links to and from the wireless handheld device over a selected communication network that best satisfies said user criteria.