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    VOICE ENCIPHERING CODER
    1.
    发明专利
    VOICE ENCIPHERING CODER 失效

    公开(公告)号：JP2000031941A

    公开(公告)日：2000-01-28

    申请号：JP16759799

    申请日：1999-06-15

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BERENZWEIG ADAM L ,  FALCO STEVEN ANTHONY ,  MIZIKOVSKY SEMYON B ,  PEKRUL WINSTON EDWARD ,  RANCE ROBERT JOHN ,  YOUTKUS DONALD JOSEPH

    IPC: G10L19/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/12 ,  H04L9/20 ,  H04L9/26 ,  H04Q7/38 ,  H04K1/02 ,  G09C1/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a voice processor architecture which does not have to use an external cipher synchronous input, has minimum voice deterioration and also accomplishes improved confidentiality by including a block eneryptor (enciphering device) and a key (key) stream generator in a transmitter side and enciphering a voice bit that is encoded by it. SOLUTION: A class 1A bit (1st block) is supplied as an input to a block encryptor (enciphering device) 34 from a voice coder (encoder) 32 included in a transmitter 30, a class 1B bit (2nd block) is supplied as an input to an XOR operator 38 and a class 2B bit (3rd block) is supplied as an input to an XOR operator 40. The encryptor (enciphering device) 34 enciphers (encrypts) a plaintext of a block into a cipher text by using an inversely transformable encryption algorithm having a key (key) related to an intended receiver.

    2.
    发明专利
    未知

    公开(公告)号：DE69916931D1

    公开(公告)日：2004-06-09

    申请号：DE69916931

    申请日：1999-06-08

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BERENZWEIG ADAM L ,  FALCO STEVEN ANTHONY ,  MIZIKOVSKY SEMYON B ,  PEKRUL WINSTON EDWARD ,  RANCE ROBERT JOHN ,  YOUTKUS DONALD JOSEPH

    IPC: G10L19/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/12 ,  H04L9/20 ,  H04L9/26 ,  H04Q7/38

    Abstract: The present invention is an encrypting speech processor architecture that provides enhanced security without the use of external cryptosync and with minimal speech degradation. This is accomplished by incorporating a block encryptor (34) and a keystream generator (36) (instead of a fixed secret mask encryption scheme, such as those implemented in voice ciphers) for encrypting blocks of encoded speech bits at a transmitter side. The block encryptor (34) employs an invertible cryptographic algorithm and internal cryptosync to convert a first block of encoded speech bits into a first ciphertext block (output 34). The first ciphertext block (output 34) is used to generate a keystream (output 36), which is then used to encrypt a second ciphertext block.

    3.
    发明专利
    未知

    公开(公告)号：DE69916931T2

    公开(公告)日：2005-04-28

    申请号：DE69916931

    申请日：1999-06-08

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BERENZWEIG ADAM L ,  FALCO STEVEN ANTHONY ,  MIZIKOVSKY SEMYON B ,  PEKRUL WINSTON EDWARD ,  RANCE ROBERT JOHN ,  YOUTKUS DONALD JOSEPH

    IPC: G10L19/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/12 ,  H04L9/20 ,  H04L9/26 ,  H04Q7/38

    Abstract: The present invention is an encrypting speech processor architecture that provides enhanced security without the use of external cryptosync and with minimal speech degradation. This is accomplished by incorporating a block encryptor (34) and a keystream generator (36) (instead of a fixed secret mask encryption scheme, such as those implemented in voice ciphers) for encrypting blocks of encoded speech bits at a transmitter side. The block encryptor (34) employs an invertible cryptographic algorithm and internal cryptosync to convert a first block of encoded speech bits into a first ciphertext block (output 34). The first ciphertext block (output 34) is used to generate a keystream (output 36), which is then used to encrypt a second ciphertext block.

    5.
    发明专利
    未知

    公开(公告)号：BR9914229A

    公开(公告)日：2001-07-31

    申请号：BR9914229

    申请日：1999-06-09

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： BERENZWEIG ADAM L ,  MIZIKOVSKY SEMYON B ,  RANCE ROBERT JOHN ,  FALCO STEVEN ANTHONY ,  PEKRUL WINSTON EDWARD ,  YOUTKUS DONALD JOSEPH

    IPC: G10L19/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/12 ,  H04L9/20 ,  H04L9/26 ,  H04Q7/38

    Abstract: The present invention is an encrypting speech processor architecture that provides enhanced security without the use of external cryptosync and with minimal speech degradation. This is accomplished by incorporating a block encryptor (34) and a keystream generator (36) (instead of a fixed secret mask encryption scheme, such as those implemented in voice ciphers) for encrypting blocks of encoded speech bits at a transmitter side. The block encryptor (34) employs an invertible cryptographic algorithm and internal cryptosync to convert a first block of encoded speech bits into a first ciphertext block (output 34). The first ciphertext block (output 34) is used to generate a keystream (output 36), which is then used to encrypt a second ciphertext block.

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