BE517223A - - Google Patents

Info

Publication number
BE517223A
BE517223A BE517223DA BE517223A BE 517223 A BE517223 A BE 517223A BE 517223D A BE517223D A BE 517223DA BE 517223 A BE517223 A BE 517223A
Authority
BE
Belgium
Prior art keywords
signal
key
pulses
groups
sep
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE517223A publication Critical patent/BE517223A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/025—Digital function generators for functions having two-valued amplitude, e.g. Walsh functions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/06—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member
    • G09C1/10—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member the connections being electrical

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Storage Device Security (AREA)
BE517223D BE517223A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE517223T

Publications (1)

Publication Number Publication Date
BE517223A true BE517223A (enrdf_load_html_response)

Family

ID=3871233

Family Applications (1)

Application Number Title Priority Date Filing Date
BE517223D BE517223A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE517223A (enrdf_load_html_response)

Similar Documents

Publication Publication Date Title
BE1003932A6 (fr) Systeme cryptographique par bloc de donnees binaires.
FR2709629A1 (fr) Processeur de signaux en bande de base modulés en amplitude à niveaux multiples superposés.
FR2640829A1 (fr) Dispositif pour la modulation ou la demodulation directe en hyperfrequences
FR2539261A1 (fr) Emetteur pour faisceaux hertziens numeriques a multi-etats
EP3254423A1 (fr) Procédé et dispositif de modulation de phase d'une onde porteuse et application à la détection de signaux numériques multi-niveaux codés en phase
CN101228754A (zh) 用于从pam波形的叠加中生成m进制cpm波形的方法和设备
Diamanti et al. Performance of various quantum-key-distribution systems using 1.55‐μ m up-conversion single-photon detectors
DE69833458T2 (de) Verkettete kode für spreizspektrumübertragung
FR2546001A1 (fr) Demodulateur de signaux, a enveloppe constante et phase continue, modules angulairement par un train de symboles binaires
Glejm et al. Quantum key distribution in an optical fiber at distances of up to 200 km and a bit rate of 180 bit/s
RU2571418C2 (ru) Способ и устройство для увеличения канальной пропускной способности коммуникационного тракта с ограниченной шириной полосы
BE517223A (enrdf_load_html_response)
EP2161847A1 (fr) Procéde de transmission de données utilisant des jeux répétitifs de séquences d'étalement, émetteur et récepteur correspondants
EP2966784B1 (fr) Dispositif de communication radiofrequence utilisant un signal torp
EP2727253B1 (fr) Procédé de traitement d'un paquet de données avant son émission dans un réseau de communication par radio, procédé de traitement d'un paquet de données reçu, dispositifs et systèmes associés
WO2021043891A1 (fr) Procede de transmission securisee de sequences d'etats quantiques entre plusieurs participants en ligne sur un canal de communication quantique
CN115276824B (zh) 一种量子噪声流加密发送机、接收机、通信系统及方法
FR2706704A1 (fr) Système de transmission numérique à étalement de spectre obtenu par codage pseudo-aléatoire basse fréquence de l'information utile et procédé d'étalement et de compression de spectre utilisé dans un tel système.
Tomita et al. High speed quantum key distribution system
CN114978348A (zh) 一种时间相位量子密钥分发系统及其发射端结构
JP5626044B2 (ja) インパルス無線伝送装置、およびインパルス無線伝送装置の送信方法
Youssef et al. Enhancement of time compression overlap-add using multirate downsample upsample shift add algorithm
RU2382504C1 (ru) Устройство шифрования и дешифрования формализованных сообщений хэширующей функцией
RU2834620C1 (ru) Система квантового распределения ключей с недоверенным центральным узлом и способ приготовления квантовых состояний для протокола квантового распределения ключей с недоверенным центральным узлом
CN115001587B (zh) 单光子傅立叶变换信号分析方法