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    DIGITAL AUTHENTICATION OVER ACOUSTIC CHANNEL
    2.
    发明专利
    DIGITAL AUTHENTICATION OVER ACOUSTIC CHANNEL 未知

    公开(公告)号：CA2532812A1

    公开(公告)日：2005-02-10

    申请号：CA2532812

    申请日：2004-07-21

    Applicant: QUALCOMM INC

    Inventor： NOERENBERG JOHN W II ,  ROSE GREGORY G ,  JALALI AHMAD ,  GANTMAN ALEXANDER ,  STEENSTRA JACK

    IPC: H04L9/32 ,  G06K20060101 ,  G07F7/10 ,  H04L9/28 ,  H04L27/18

    Abstract: Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded wit h the access code using the LUT; and outputting the multiple tones encoded wit h the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de- interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.

    SMALL PUBLIC-KEY BASED DIGITAL SIGNATURES FOR AUTHENTICATION
    3.
    发明专利
    SMALL PUBLIC-KEY BASED DIGITAL SIGNATURES FOR AUTHENTICATION 未知

    公开(公告)号：CA2598811A1

    公开(公告)日：2006-08-31

    申请号：CA2598811

    申请日：2006-02-24

    Applicant: QUALCOMM INC

    Inventor： HAWKES PHILIP MICHAEL ,  GANTMAN ALEXANDER ,  NOERENBERG JOHN W II ,  ROSE GREGORY GORDON

    IPC: H04L9/32

    Abstract: Embodiments disclosed allow authentication between two entities having agreed on the use of a common modulus N. The authentication includes generating a pseudorandom string value; generating a public key value based on the modulus N and the pseudorandom string value; generating a private key value corresponding to the public key value; receiving a verifier's public key value; generating a shared secret value based on the modulus N, the private key value and the verifier's public key value; calculating an authentication signature value using the shared secret value; and transmitting the authentication signature value for authentication. When the authentication signature is received, the public key value and the shared value are generated to calculate an authentication signature value. Thereafter, the authentication signature values are compared and authenticated.

    Small public-key based digital signatures for authentication
    4.
    发明专利
    Small public-key based digital signatures for authentication 未知

    公开(公告)号：AU2006216517A1

    公开(公告)日：2006-08-31

    申请号：AU2006216517

    申请日：2006-02-24

    Applicant: QUALCOMM INC

    Inventor： ROSE GREGORY GORDON ,  GANTMAN ALEXANDER ,  NOERENBERG JOHN W II ,  HAWKES PHILIP MICHAEL

    IPC: H04L9/32

    Abstract: Embodiments disclosed allow authentication between two entities having agreed on the use of a common modulus N. The authentication includes generating a pseudorandom string value; generating a public key value based on the modulus N and the pseudorandom string value; generating a private key value corresponding to the public key value; receiving a verifier's public key value; generating a shared secret value based on the modulus N, the private key value and the verifier's public key value; calculating an authentication signature value using the shared secret value; and transmitting the authentication signature value for authentication. When the authentication signature is received, the public key value and the shared value are generated to calculate an authentication signature value. Thereafter, the authentication signature values are compared and authenticated.

    AUTENTIFICACION DIGITAL SOBRE CANAL ACUSTICO.
    5.
    发明专利
    AUTENTIFICACION DIGITAL SOBRE CANAL ACUSTICO. 未知

    公开(公告)号：MXPA06000801A

    公开(公告)日：2006-04-18

    申请号：MXPA06000801

    申请日：2004-07-21

    Applicant: QUALCOMM INC

    Inventor： NOERENBERG JOHN W II

    IPC: G06K20060101 ,  G07F7/10 ,  H04L9/32 ,  G06K00/00

    Abstract: Se describen aparato y metodo para autentificacion y verificacion digitales. En una modalidad, la autentificacion y verificacion digitales. En una modalidad, la autentificacion involucra almacenar una clave criptografica y una tabla de consulta (LUT); generar un codigo de acceso utilizando la clave criptografica y una tabla de consulta (LUT); generar un codigo de acceso utilizando la clave criptografica; generar multiples simbolos de BPSK paralelos basandose en el codigo de acceso; convertir los simbolos de BPSK en multiples tonos codificados con el codigo de acceso utilizando la LUT; y producir los multiples tonos codificados con el codigo de acceso para autentificacion. En otra modalidad la verificacion involucra recibir multiples tonos codificados con un codigo de acceso; generar multiples simbolos de BPSK paralelos a partir de los multiples tonos; convertir los simbolos de BPSK en una corriente de bits intercalados codificados del codigo de acceso; desintercalar la corriente de bits intercalados codificados; y recuperar el codigo de acceso de la corriente de bits desintercalados codificados.

    Digital authentication over acoustic channel
    6.
    发明专利
    Digital authentication over acoustic channel 未知

    公开(公告)号：AU2004262288A1

    公开(公告)日：2005-02-10

    申请号：AU2004262288

    申请日：2004-07-21

    Applicant: QUALCOMM INC

    Inventor： NOERENBERG JOHN W II ,  ROSE GREGORY G ,  GANTMAN ALEXANDER ,  JALALI AHMAD ,  STEENSTRA JACK

    IPC: G06K19/00 ,  G06K20060101 ,  G07F7/10 ,  H04L9/32

    Abstract: Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded with the access code using the LUT; and outputting the multiple tones encoded with the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de-interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.

    SYSTEM, APPARATUS AND METHOD FOR REPLACING A CRYPTOGRAPHIC KEY
    8.
    发明专利
    SYSTEM, APPARATUS AND METHOD FOR REPLACING A CRYPTOGRAPHIC KEY 未知

    公开(公告)号：CA2512645A1

    公开(公告)日：2004-07-29

    申请号：CA2512645

    申请日：2003-12-30

    Applicant: QUALCOMM INC

    Inventor： ROSE GREGORY G ,  GANTMAN ALEXANDER ,  NOERENBERG JOHN W II

    IPC: H04L9/30 ,  H04L9/32 ,  H04L9/00 ,  H04K1/00

    Abstract: Embodiments describe a method and/or system (200) whereby a secret key in a cryptographic system may be replaced without revealing the secret key. One embodiment comprises creating a first private key (210) and corresponding first public key. A second private key associated with the first private key and a second public key corresponding to the second private key are also created (220). The second private key is output once (230) such that it can be re-created and the second public key is output when outputting the first public key (240). The first private key is used for authentication (260). Th e method further comprises re-creating the second private key; and using the second private key for authentication. Another embodiment comprises creating a private key and corresponding public key with associated system parameter (410); outputting the system parameter when outputting the public key (430); and using the private key for authentication (460). The method may further comprise creating a new private key using the previous key and the system parameter (470).

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