GB8332970D0 - Voice encryption and decryption system - Google Patents

Voice encryption and decryption system

Info

Publication number
GB8332970D0
GB8332970D0 GB838332970A GB8332970A GB8332970D0 GB 8332970 D0 GB8332970 D0 GB 8332970D0 GB 838332970 A GB838332970 A GB 838332970A GB 8332970 A GB8332970 A GB 8332970A GB 8332970 D0 GB8332970 D0 GB 8332970D0
Authority
GB
United Kingdom
Prior art keywords
decryption system
voice encryption
encryption
voice
decryption
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.)
Granted
Application number
GB838332970A
Other versions
GB2132857B (en
GB2132857A (en
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
Publication of GB8332970D0 publication Critical patent/GB8332970D0/en
Publication of GB2132857A publication Critical patent/GB2132857A/en
Application granted granted Critical
Publication of GB2132857B publication Critical patent/GB2132857B/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)
GB08332970A 1982-12-10 1983-12-09 Voice encryption and decryption system Expired GB2132857B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21670982A JPS59107658A (en) 1982-12-10 1982-12-10 Method and apparatus of private talk

Publications (3)

Publication Number Publication Date
GB8332970D0 true GB8332970D0 (en) 1984-01-18
GB2132857A GB2132857A (en) 1984-07-11
GB2132857B GB2132857B (en) 1986-09-03

Family

ID=16692686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08332970A Expired GB2132857B (en) 1982-12-10 1983-12-09 Voice encryption and decryption system

Country Status (4)

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

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
US5680460A (en) * 1994-09-07 1997-10-21 Mytec Technologies, Inc. Biometric controlled key generation
US5541994A (en) * 1994-09-07 1996-07-30 Mytec Technologies Inc. Fingerprint controlled public key cryptographic system
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 (en) * 1997-04-15 1998-10-22 Iks Gmbh Information Kommunika Identity verification procedures
CA2203212A1 (en) 1997-04-21 1998-10-21 Vijayakumar Bhagavatula Methodology for biometric encryption
KR100611955B1 (en) * 1999-07-20 2006-08-11 삼성전자주식회사 Scrambler
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
GB2132857B (en) 1986-09-03
JPS59107658A (en) 1984-06-21
JPH0527291B2 (en) 1993-04-20
AU2225783A (en) 1984-06-14
GB2132857A (en) 1984-07-11
CA1206528A (en) 1986-06-24
AU561204B2 (en) 1987-04-30

Similar Documents

Publication Publication Date Title
EP0227318A3 (en) Encryption/decryption system
DE3070681D1 (en) Enciphering and deciphering system
DE3366798D1 (en) Encryption system key distribution method and apparatus
GB2129986A (en) Software protection methods and apparatus
ZA838242B (en) Clearance-controlling means and methods
GB8418979D0 (en) Authentication system
GB2126044B (en) Loudspeaker system
GB8508115D0 (en) Security system
DE3462649D1 (en) Method of distributing and utilizing enciphering keys
EP0131421A3 (en) User authentication system
GB2130048B (en) Speaker system
GB2132857B (en) Voice encryption and decryption system
GB8310954D0 (en) Security system
GB8313031D0 (en) Security device
GB2127479B (en) Security device
GB8319936D0 (en) Calendered aes film
GB2124808B (en) Security system
GB2126765B (en) Deciphering apparatus
GB8313164D0 (en) Security device
GB8326095D0 (en) Bus-bars and enclosures
GB2119557B (en) Record verify and optimize system
GB8816636D0 (en) Encryption apparatus
GB8327129D0 (en) Sealing and distribution device
KR880701502A (en) Encryption and decryption device
DE3360076D1 (en) Deciphering method and device

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961209