Method and apparatus for enciphering and deciphering of information
    1.
    发明授权
    Method and apparatus for enciphering and deciphering of information 失效
    用于加密和解密信息的方法和装置

    公开(公告)号:US4369333A

    公开(公告)日:1983-01-18

    申请号:US175370

    申请日:1980-08-05

    CPC分类号: H04L9/065

    摘要: Plain text or information which is to be processed at the transmitter end of the system is formed by groups of plain text or information signals which are separated by separation signals. In the absence of plain information signals there are inserted fill signals between the plain information signal groups, these fill signals likewise being separated by separation signals. At the transmitter end there are enciphered, apart from the plain information signals and possibly the fill signals, all or a part of the separation signals. The signal flow which appears at the transmission path no longer is divided in a clearly recognizable manner into individual packets. In order to render possible at the receiver end of the system separation of information signals and fill signals which are insignificant as to their information content, during the course of the transmitter end enciphering the separation signals between the fill signals are provided with an appropriate characteristic or recognition information.

    摘要翻译: 要在系统的发射机端处理的纯文本或信息由明文或由分离信号分离的信息信号组组成。 在没有平坦信息信号的情况下,在平坦信息信号组之间插入填充信号,这些填充信号同样被分离信号分离。 在发射机端,除了明信息信号和可能的填充信号之外,还有所有或部分分离信号被加密。 出现在传输路径上的信号流不再以清晰可识别的方式划分成各个分组。 为了在系统的接收端实现对信息信号的分离和与其信息内容无关的填充信号的可能性,在发送端的加密过程中,填充信号之间的分离信号被提供有适当的特性或 识别信息。

    Electronic enciphering- and deciphering apparatus in the form of a
pocket calculator
    3.
    发明授权
    Electronic enciphering- and deciphering apparatus in the form of a pocket calculator 失效
    电子计算器形式的电子制造和分解装置

    公开(公告)号:US4095046A

    公开(公告)日:1978-06-13

    申请号:US737285

    申请日:1976-11-01

    CPC分类号: G09C1/10

    摘要: An electronic enciphering- and deciphering apparatus in the form of a pocket calculator, comprising an input device for the input of characters to be processed, a control device for the input of control commands determining the function of the apparatus, an output device for the display of information, and a power source for the apparatus. A primary storage or memory serves for the storage of the entered character information, the output side of which can be connected with the output device and a cipher computer which can be connected at its output side with the output device. At least one key character storage is operatively associated with the cipher computer, the key character storage being connectable with the input device. A central control unit can be controlled by the control device. The control unit, as a function of the entered control commands, determines the information paths in the apparatus and controls the aforementioned components, so that depending upon the entered control commands the output device displays the character information entered at the input device or the information stored in the primary storage or the character information produced by the cipher computer.