DE3688235T2 - Datenwandler. - Google Patents

Datenwandler.

Info

Publication number
DE3688235T2
DE3688235T2 DE8686115402T DE3688235T DE3688235T2 DE 3688235 T2 DE3688235 T2 DE 3688235T2 DE 8686115402 T DE8686115402 T DE 8686115402T DE 3688235 T DE3688235 T DE 3688235T DE 3688235 T2 DE3688235 T2 DE 3688235T2
Authority
DE
Germany
Prior art keywords
data converter
converter
data
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 - Fee Related
Application number
DE8686115402T
Other languages
English (en)
Other versions
DE3688235D1 (de
Inventor
Eiji Okamoto
Katsuhiro Nakamura
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
Priority claimed from JP60250230A external-priority patent/JPS62109445A/ja
Priority claimed from JP60250231A external-priority patent/JPS62109446A/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3688235D1 publication Critical patent/DE3688235D1/de
Publication of DE3688235T2 publication Critical patent/DE3688235T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/34—Encoding or coding, e.g. Huffman coding or error correction
DE8686115402T 1985-11-07 1986-11-06 Datenwandler. Expired - Fee Related DE3688235T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60250230A JPS62109445A (ja) 1985-11-07 1985-11-07 デ−タ変換器
JP60250231A JPS62109446A (ja) 1985-11-07 1985-11-07 デ−タ変換器

Publications (2)

Publication Number Publication Date
DE3688235D1 DE3688235D1 (de) 1993-05-13
DE3688235T2 true DE3688235T2 (de) 1993-08-12

Family

ID=26539693

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686115402T Expired - Fee Related DE3688235T2 (de) 1985-11-07 1986-11-06 Datenwandler.

Country Status (4)

Country Link
US (1) US4760599A (de)
EP (1) EP0221558B1 (de)
CA (1) CA1274627A (de)
DE (1) DE3688235T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856063A (en) * 1988-01-27 1989-08-08 Technical Communication Corporation No-overhead synchronization for cryptographic systems
NL8901323A (nl) * 1989-05-26 1990-12-17 Nederland Ptt Werkwijze voor het vercijferen van een reeks telkens uit tenminste een symbool bestaande boodschappen.
US5077794A (en) * 1989-11-16 1991-12-31 Verilink Corporation Dual framing bit sequence alignment apparatus and method
JP3029381B2 (ja) * 1994-01-10 2000-04-04 富士通株式会社 データ変換装置
WO1996042155A1 (en) * 1995-06-08 1996-12-27 Motorola Inc. Method of encrypting data packets and detecting decryption errors
DE69618509T2 (de) * 1995-07-14 2002-08-29 Sony Corp Übertragung, Aufzeichnung und Wiedergabe von Daten
US6219791B1 (en) * 1998-06-22 2001-04-17 Motorola, Inc. Method and apparatus for generating and verifying encrypted data packets
GB2342016B (en) * 1998-09-23 2003-06-25 Sony Uk Ltd Interfacing digital signals
US8130949B2 (en) * 2009-03-20 2012-03-06 Cisco Technology, Inc. Partially reversible key obfuscation
US8229115B2 (en) * 2009-07-15 2012-07-24 Cisco Technology, Inc. Use of copyright text in key derivation function

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074066A (en) * 1976-04-26 1978-02-14 International Business Machines Corporation Message verification and transmission error detection by block chaining
US4159468A (en) * 1977-11-17 1979-06-26 Burroughs Corporation Communications line authentication device
US4304961A (en) * 1980-03-03 1981-12-08 Burroughs Corporation Authenticator code generator
US4314097A (en) * 1980-03-10 1982-02-02 Burroughs Corporation Authenticator device for precluding compensating text modifications in transmitted messages
US4447672A (en) * 1980-10-06 1984-05-08 Nippon Electric Co., Ltd. Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits

Also Published As

Publication number Publication date
DE3688235D1 (de) 1993-05-13
EP0221558A2 (de) 1987-05-13
US4760599A (en) 1988-07-26
CA1274627A (en) 1990-09-25
EP0221558A3 (en) 1990-01-31
EP0221558B1 (de) 1993-04-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee