Method and apparatus for multiple-iteration CMEA encryption and decryption for improved security for wireless telephone messages
    2.
    发明授权
    Method and apparatus for multiple-iteration CMEA encryption and decryption for improved security for wireless telephone messages 失效
    用于多重迭代的方法和装置CMEA加密和解密用于改善无线电话消息的安全性

    公开(公告)号:US06266411B1

    公开(公告)日:2001-07-24

    申请号:US09059107

    申请日:1998-04-13

    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 tbox 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。 CMEA迭代可以使用对消息或中间加密处理的数据添加置换的tbox函数的改进的使用来执行。 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。

    Methods and apparatus for self-inverting multiple-iteration CMEA crypto-processing for improved security for wireless telephone messages
    3.
    发明授权
    Methods and apparatus for self-inverting multiple-iteration CMEA crypto-processing for improved security for wireless telephone messages 失效
    用于自反相多重迭代CMEA加密处理的方法和装置,用于改善无线电话消息的安全性

    公开(公告)号:US06418224B1

    公开(公告)日:2002-07-09

    申请号:US09073131

    申请日:1998-05-05

    CPC classification number: H04L9/0618 H04L2209/80

    Abstract: A self-inverting enhanced CMEA encryption system suitable for use in wireless telephony. An unprocessed text message is introduced into the system and subjected to a first iteration of a CMEA process, using a first CMEA key to produce a first intermediate message, a first intermediate processed text message, a first intermediate ciphertext message or the like. The first intermediate processed text message is subjected to a further iteration of the CMEA process, using a second CMEA key, to produce a second intermediate processed text message. The second intermediate processed text message is subjected to a final iteration of the CMEA process, using the first CMEA key, to produce the final processed text message. Security may be additionally enhanced by subjecting each message to an input/output transformation before and after each iteration of the CMEA process. In a three-iteration process, a total of four input/output transformations are used with the first and fourth input/output transformations being identical, and with the second and third input/output transformations being identical.

    Abstract translation: 适用于无线电话的自反相增强型CMEA加密系统。 未处理的文本消息被引入到系统中,并且使用第一CMEA密钥来产生第一中间消息,第一中间处理文本消息,第一中间密文消息等进行CMEA处理的第一次迭代。 使用第二CMEA密钥对第一中间处理文本消息进行CMEA处理的进一步迭代,以产生第二中间处理文本消息。 使用第一个CMEA密钥对第二个中间处理文本消息进行CMEA进程的最终迭代,以产生最终处理的文本消息。 可以通过在CMEA进程的每次迭代之前和之后对每个消息进行输入/输出变换来额外增强安全性。 在三次迭代过程中,总共使用四个输入/输出变换,其中第一和第四输入/输出变换是相同的,并且第二和第三输入/输出变换是相同的。

    Methods and apparatus for enhanced CMEA employing enhanced transformations
    4.
    发明授权
    Methods and apparatus for enhanced CMEA employing enhanced transformations 失效
    使用增强转化的增强CMEA的方法和装置

    公开(公告)号:US06377687B1

    公开(公告)日:2002-04-23

    申请号:US09124300

    申请日:1998-07-29

    Abstract: Methods and apparatus for enhanced CMEA, or ECMEA, processing. A forward ECMEA and a reverse ECMEA process are provided. The forward ECMEA process decrypts text encrypted by the reverse ECMEA process and the reverse ECMEA process decrypts text encrypted by the forward ECMEA process. The forward ECMEA process employs a transformation, an iteration of the CMEA process, and an inverse transformation. The reverse ECMEA process employs a reverse transformation, an iteration of the CMEA process, and a reverse inverse transformation. The transformations and inverse transformations, and the iteration of the CMEA process, employ secret offsets to improve security. The transformations and the iteration of the CMEA process also employ an enhanced tbox function using an involutary lookup table.

    Abstract translation: 增强CMEA或ECMEA的方法和设备,加工。 提供了前向ECMEA和反向ECMEA流程。 正向ECMEA过程解密由反向ECMEA过程加密的文本,而反向ECMEA过程会解密通过正向ECMEA过程加密的文本。 前向ECMEA过程采用CMEA过程的转换,迭代和逆变换。 反向ECMEA过程采用反向变换,CMEA过程的迭代和逆向逆变换。 转换和逆变换以及CMEA过程的迭代采用秘密补偿来提高安全性。 CMEA过程的转换和迭代也采用增强型tbox函数,使用渐近查找表。

    Exhaust pipe coupling
    8.
    发明授权

    公开(公告)号:US11987336B2

    公开(公告)日:2024-05-21

    申请号:US17324285

    申请日:2021-05-19

    CPC classification number: B63H21/34 F01N1/083 F01N13/10

    Abstract: An oceangoing vessel exhaust pipe coupling used to temporarily couple to an oceangoing vessel exhaust pipe. Installation and removal of the coupling only requires a simple mechanism with three translational degrees of freedom and one rotational degree of freedom, thereby enabling remote coupling. The coupling adapts to a wide array of exhaust pipe shapes and sizes. This is accomplished by a unique shape that allows stable and balanced resting position on top of an exhaust pipe as well as a two-chamber configuration, wherein the two chambers are separated by a permeable partition. Furthermore, the unique shapes of the chambers deflect the exhaust gas stream towards the outlet of the coupling, regardless of exhaust pipe style, thereby increasing capture efficiency and extending the life of an attached fabric flexible hose.

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