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    11.
    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.

    13.
    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.

    METHODS AND APPARATUS FOR ENHANCED SECURITY EXPANSION OF A SECRET KEY INTO A LOOKUP TABLE FOR IMPROVED SECURITY FOR WIRELESS TELEPHONE MESSAGES
    17.
    发明申请
    METHODS AND APPARATUS FOR ENHANCED SECURITY EXPANSION OF A SECRET KEY INTO A LOOKUP TABLE FOR IMPROVED SECURITY FOR WIRELESS TELEPHONE MESSAGES 审中-公开
    用于增强安全性将秘密密钥扩展到查找表以提高无线电话消息的安全性的方法和设备

    公开(公告)号：WO9903246A3

    公开(公告)日：1999-03-25

    申请号：PCT/US9807404

    申请日：1998-04-13

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ETZEL MARK H ,  FRANK ROBERT JOHN ,  HEER DANIEL NELSON ,  MCNELIS ROBERT JOHN ,  MIZIKOVSKY SEMYON B ,  RANCE ROBERT JOHN ,  SHIPP R DALE

    IPC: H04L9/06

    CPC classification number: H04L9/0618 ,  H04L2209/80

    Abstract: An enhancement to the use of a tbox function for CMEA encryption. Offsets are generated for application of the tbox function to a message, using secret values and previously encrypted message octets. The offsets are used to permute the message for application of the tbox function. For the first message of a call, the previously encrypted message octets are replaced by an initialization value. In a system employing a single iteration of CMEA encryption, first and second offsets are generated. In a system employing two iterations of CMEA encryption, first, second, third and fourth offsets are generated, with the first and second offsets being used in the first iteration of CMEA encryption and the third and fourth offsets being used in the second iteration of CMEA encryption.

    Abstract translation: 对CMEA加密使用tbox功能的改进。 使用秘密值和先前加密的消息八位组产生用于将tbox功能应用于消息的偏移量。 偏移量用于排列应用tbox函数的消息。 对于呼叫的第一条消息，先前加密的消息八位字节由初始化值替换。 在采用CMEA加密的单次迭代的系统中，生成第一和第二偏移量。 在采用CMEA加密的两次迭代的系统中，生成第一，第二，第三和第四偏移量，第一和第二偏移量用于CMEA加密的第一次迭代中，第三和第四偏移量用于CMEA的第二次迭代中 加密。

    METHOD OF CRYPTOGRAPHIC SYNCHRONIZATION
    18.
    发明申请
    METHOD OF CRYPTOGRAPHIC SYNCHRONIZATION 审中-公开
    克隆同步方法

    公开(公告)号：WO2007094989A3

    公开(公告)日：2008-01-24

    申请号：PCT/US2007003054

    申请日：2007-02-05

    Applicant: LUCENT TECHNOLOGIES INC ,  MIZIKOVSKY SEMYON B ,  RANCE ROBERT JOHN

    Inventor： MIZIKOVSKY SEMYON B ,  RANCE ROBERT JOHN

    IPC: H04L9/12 ,  H04L9/32

    CPC classification number: H04L9/3271 ,  H04L9/12 ,  H04L9/3242 ,  H04L63/067 ,  H04L2209/80 ,  H04W12/04 ,  H04W12/06

    Abstract: The present invention provides a method of cryptographic synchronization. The method may include providing information indicative of a first counter to a first one of a plurality of base stations. The first counter is incremented prior to each message transmitted to each of the plurality of base stations. The method may also include authenticating at least one first message received from the first one of the plurality of base stations in response to providing the information indicative of first counter.

    Abstract translation: 本发明提供一种加密同步的方法。 该方法可以包括向多个基站中的第一个提供指示第一计数器的信息。 在发送到多个基站中的每一个的每个消息之前，第一计数器递增。 响应于提供指示第一计数器的信息，该方法还可包括认证从多个基站中的第一基站接收的至少一个第一消息。

    METHODS AND APPARATUS FOR MULTIPLE-ITERATION CMEA ENCRYPTION AND DECRYPTION FOR IMPROVED SECURITY FOR WIRELESS TELEPHONE MESSAGES
    19.
    发明申请
    METHODS AND APPARATUS FOR MULTIPLE-ITERATION CMEA ENCRYPTION AND DECRYPTION FOR IMPROVED SECURITY FOR WIRELESS TELEPHONE MESSAGES 审中-公开
    用于无线电话消息的多重加密CMEA加密和改进安全的方法和装置

    公开(公告)号：WO9847262A9

    公开(公告)日：1999-04-22

    申请号：PCT/US9807823

    申请日：1998-04-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ETZEL MARK H ,  FRANK ROBERT JOHN ,  HEER DANIEL NELSON ,  NCNELIS ROBERT JOHN ,  MIZIKOVSKY SEMYON B ,  RANCE ROBERT JOHN ,  SHIPP R DALE

    IPC: H04L9/00 ,  H04L9/06 ,  H04Q7/38

    CPC classification number: H04L9/06 ,  H04L2209/80

    Abstract: An enhanced CMEA encryption system suitable for use in wireless telephony. A plaintext message is introduced into the system and subjected to a first iteration of a CMEA process, using a first CMEA key to produce an intermediate ciphertext. The intermediate ciphertext is then subjected to a second iteration of the CMEA process using a second CMEA key to produce a final ciphertext. Additional security is achieved by subjecting the plaintext and intermediate ciphertext to input and output transformations before and after each iteration of the CMEA process. The CMEA iterations may be performed using an improved use of a box function which adds permutations to a message or intermediate crypto-processed data. Decryption is achieved by subjecting a ciphertext message to the reverse order of the steps used for encryption, replacing the input and output transformations by inverse output and inverse input transformations, respectively, as appropriate.

    Abstract translation: 适用于无线电话的增强型CMEA加密系统。 将明文消息引入到系统中，并使用第一CMEA密钥来产生中间密文，进行CMEA过程的第一次迭代。 然后使用第二CMEA密钥对中间密文进行CMEA过程的第二次迭代以产生最终密文。 通过对明文和中间密文进行输入和输出CMEA进程每次迭代之前和之后的转换来实现额外的安全性。 可以使用对消息或中间加密处理的数据添加排列的盒子功能的改进使用来执行CMEA迭代。 解密是通过对加密步骤的相反顺序进行密文消息来实现的，分别通过反向输出和反向输入变换分别代替输入和输出变换。

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