CA1206528A - Voice encryption and decryption system - Google Patents

Voice encryption and decryption system

Info

Publication number
CA1206528A
CA1206528A CA000442943A CA442943A CA1206528A CA 1206528 A CA1206528 A CA 1206528A CA 000442943 A CA000442943 A CA 000442943A CA 442943 A CA442943 A CA 442943A CA 1206528 A CA1206528 A CA 1206528A
Authority
CA
Canada
Prior art keywords
signal
discrete
random number
output signal
generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000442943A
Other languages
English (en)
French (fr)
Inventor
Yoshihiko Akaiwa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of CA1206528A publication Critical patent/CA1206528A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA000442943A 1982-12-10 1983-12-09 Voice encryption and decryption system Expired CA1206528A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPP57-216709 1982-12-10
JP21670982A JPS59107658A (ja) 1982-12-10 1982-12-10 秘話送受信装置

Publications (1)

Publication Number Publication Date
CA1206528A true CA1206528A (en) 1986-06-24

Family

ID=16692686

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000442943A Expired CA1206528A (en) 1982-12-10 1983-12-09 Voice encryption and decryption system

Country Status (4)

Country Link
JP (1) JPS59107658A (enrdf_load_stackoverflow)
AU (1) AU561204B2 (enrdf_load_stackoverflow)
CA (1) CA1206528A (enrdf_load_stackoverflow)
GB (1) GB2132857B (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission
US5272755A (en) * 1991-06-28 1993-12-21 Matsushita Electric Industrial Co., Ltd. Public key cryptosystem with an elliptic curve
US5351297A (en) * 1991-06-28 1994-09-27 Matsushita Electric Industrial Co., Ltd. Method of privacy communication using elliptic curves
US5442707A (en) * 1992-09-28 1995-08-15 Matsushita Electric Industrial Co., Ltd. Method for generating and verifying electronic signatures and privacy communication using elliptic curves
US5712912A (en) * 1995-07-28 1998-01-27 Mytec Technologies Inc. Method and apparatus for securely handling a personal identification number or cryptographic key using biometric techniques
US5541994A (en) * 1994-09-07 1996-07-30 Mytec Technologies Inc. Fingerprint controlled public key cryptographic system
US5680460A (en) * 1994-09-07 1997-10-21 Mytec Technologies, Inc. Biometric controlled key generation
US5740276A (en) * 1995-07-27 1998-04-14 Mytec Technologies Inc. Holographic method for encrypting and decrypting information using a fingerprint
US6289314B1 (en) * 1996-09-18 2001-09-11 Matsushita Electric Industrial Co., Ltd. Pay information providing system for descrambling information from plural sources and rescrambling the information before sending to a terminal or terminals
DE19715644A1 (de) * 1997-04-15 1998-10-22 Iks Gmbh Information Kommunika Verfahren zur Identitätsprüfung
CA2203212A1 (en) 1997-04-21 1998-10-21 Vijayakumar Bhagavatula Methodology for biometric encryption
KR100611955B1 (ko) * 1999-07-20 2006-08-11 삼성전자주식회사 스크램블러
US7841539B2 (en) 2007-02-15 2010-11-30 Alfred Hewton Smart card with random temporary account number generation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052565A (en) * 1975-05-28 1977-10-04 Martin Marietta Corporation Walsh function signal scrambler
JPS5382101A (en) * 1976-12-27 1978-07-20 Nissin Electric Co Ltd Method of transmitting signal
US4341925A (en) * 1978-04-28 1982-07-27 Nasa Random digital encryption secure communication system
GB2042849B (en) * 1979-02-20 1983-04-13 Payview Ltd Encoding of information
JPS56143744A (en) * 1980-04-09 1981-11-09 Nec Corp Data interchanging system

Also Published As

Publication number Publication date
AU561204B2 (en) 1987-04-30
GB2132857A (en) 1984-07-11
JPH0527291B2 (enrdf_load_stackoverflow) 1993-04-20
AU2225783A (en) 1984-06-14
GB2132857B (en) 1986-09-03
JPS59107658A (ja) 1984-06-21
GB8332970D0 (en) 1984-01-18

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Legal Events

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