GB874890A - Electrical arrangements for the ciphering coded binary signals - Google Patents
Electrical arrangements for the ciphering coded binary signalsInfo
- Publication number
- GB874890A GB874890A GB6306/58A GB630658A GB874890A GB 874890 A GB874890 A GB 874890A GB 6306/58 A GB6306/58 A GB 6306/58A GB 630658 A GB630658 A GB 630658A GB 874890 A GB874890 A GB 874890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- elements
- counter
- outputs
- pulse
- 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
Links
- 239000004020 conductor Substances 0.000 abstract 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- 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
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
- H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Abstract
874,890. Secret system for telegraphic and like binary coded signals. TELEFUNKEN G.m.b.H. Feb. 26, 1958 [Feb. 26, 1957], No. 6306/58. Class 40(3) A ciphering system for signals in an equal-unit code for type-printing telegraphy, or for a quantized binary code representative of speech, comprises m ring counters having cycles with numbers of steps which are all different and prime to each other and a cipher store for the n units of the teleprinter or binary code in combination with a switch-over device having m inputs and n outputs, the arrangement being such that each of the m ring counter outputs can be connected by the switch device through a gate circuit to any of the n inputs of the cipher store. A start pulse to initiate the operation of the arrangement operates the receiving relay ER and its contact er so that an oscillator O operating at the element frequency controls a 5-stage counter V producing pulses which allow the signal elements at contact er to pass through gates a . . . e of an assembly T1 to the elements a . . . e of an adding device AW to which ciphering elements are passed from gates a . . . e of an assembly T2 after a delay produced by devices D1 in conjunction with pulses from the counter V. Pulses are also passed from the counter V with a delay T2 (>T1) to the tubes a ... e of an interrogating device AA which detects the pulses set up in the adding device AW and controls the output relay AR to pass the ciphered signal elements to the line AK. The ciphering pulses fed to the inputs A . . . E of the element T2 are derived by cross connection of the outputs I . . . V of storage elements of a cipher store SS controlled through predeterminedly set switches S1 . . . S10 and a set T3 of gates 1 ... 10 which are opened by pulses in succession from the elements 1... 10 of a tenposition counter SA and pulses produced by cyclically-operated counters Z1 . . . Z10 when they have been stepped to their respective final stages. The counter V, when it reaches its fifth, or final, stage after five signal elements have been received, passes a pulse over the line SL to all the counters Z1 . . . Z10 which are stepped to their final positions by 2, 3, 5, 7 ... 29 pulses respectivelythese numbers being all prime to each other. The output of the oscillator O is passed through a frequency doubler FV-so that the counter SA is stepped through a complete cycle during which the members 1 . . . 5 of the store SS are set, firstly according to the outputs of Z1 . . . Z5 and switches S1 . . . S5 and then by the outputs of Z6 . . . Z10 and the setting of the switches S6 . . . S10. Impulses from the counter or distributer V are also passed with delay provided by devices D2 to elements a ... e of an interrogating device AA operating to detect the pulses stored in the adding device AW to control the output relay AR passing the ciphered pulses to the line AK. The detecting pulses from the interrogator AA also restore the adding device to its normal condition to respond to the elements of the subsequent signal. The pulses from the doubler F# are slightly delayed by the device D3 to prevent coincidence of the setting pulse over SL with a stepping pulse to the distributor SA. In a modification, Fig. 2 (not shown), utilized for teleprinter signals, the oscillator O producing pulses timed with the incoming signal elements is controlled by the start and stop signal elements through a switch device which also provides a pulse over a conductor, corresponding to SL of Fig. 1, to step the set of ring-counters of different operational cycles. The switch device also provides a pulse which through suitable delay devices controls elements auxiliary to the tubes of the interrogator to add start and stop elements to the ciphered 5-unit code combination sent to the outgoing line.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET13281A DE1054491B (en) | 1957-02-26 | 1957-02-26 | Arrangement for the generation of n-digit, binary key numbers for the encryption of binary signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB874890A true GB874890A (en) | 1961-08-10 |
Family
ID=7547284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6306/58A Expired GB874890A (en) | 1957-02-26 | 1958-02-26 | Electrical arrangements for the ciphering coded binary signals |
Country Status (5)
Country | Link |
---|---|
US (1) | US3038028A (en) |
DE (1) | DE1054491B (en) |
FR (1) | FR1198894A (en) |
GB (1) | GB874890A (en) |
NL (2) | NL109840C (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1156847B (en) * | 1959-12-22 | 1963-11-07 | Prec Mecanique Labinal | Coding device with a code converter for coded radio signals |
NL267662A (en) * | 1960-08-02 | |||
NL279100A (en) * | 1961-05-30 | |||
BE623086A (en) * | 1961-10-02 | |||
DE1196713B (en) * | 1962-08-30 | 1965-07-15 | Deutsche Bundespost | Procedure for voice encryption |
US5018685A (en) * | 1964-05-27 | 1991-05-28 | The United States Of America As Represented By The Secretary Of The Navy | Data link and return link |
US5004185A (en) * | 1964-08-31 | 1991-04-02 | The United States Of America As Represented By The Secretary Of The Navy | Air-surface-missile data link system |
US4434322A (en) | 1965-08-19 | 1984-02-28 | Racal Data Communications Inc. | Coded data transmission system |
US4283602A (en) * | 1966-06-03 | 1981-08-11 | International Telephone And Telegraph Corporation | Cryptographically secure communication system |
US3496291A (en) * | 1966-06-17 | 1970-02-17 | Int Standard Electric Corp | Enciphering teleprinter text for telex channels |
US4171513A (en) * | 1966-09-06 | 1979-10-16 | Sanders Associates, Inc. | Secure communications system |
GB1190809A (en) * | 1967-06-26 | 1970-05-06 | Ericsson Telefon Ab L M | Improvements in and relating to the Generation of a Pulse Code |
US3715508A (en) * | 1967-09-15 | 1973-02-06 | Ibm | Switching circuits employing orthogonal and quasi-orthogonal pseudo-random code sequences |
FR1576416A (en) * | 1968-04-10 | 1969-08-01 | ||
US3627928A (en) * | 1969-02-04 | 1971-12-14 | Litton Systems Inc | Telegraph privacy system |
GB1235571A (en) * | 1969-03-05 | 1971-06-16 | Transvertex Ab | Improved ciphering machine |
US3781473A (en) * | 1971-04-15 | 1973-12-25 | Datotek | Random digital code generator |
US3796830A (en) * | 1971-11-02 | 1974-03-12 | Ibm | Recirculating block cipher cryptographic system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2406046A (en) * | 1942-05-21 | 1946-08-20 | Bell Telephone Labor Inc | Telegraph signal enciphering key tape producing device |
US2406032A (en) * | 1942-11-23 | 1946-08-20 | Bell Telephone Labor Inc | Telegraph signal enciphering mechanism |
US2403888A (en) * | 1944-02-12 | 1946-07-09 | American Telephone & Telegraph | Enciphering and deciphering system |
CH311424A (en) * | 1950-04-22 | 1955-11-30 | Gretener Edgar Ing Dr | Method for the secrecy of speech in communication channels. |
US2794851A (en) * | 1952-02-08 | 1957-06-04 | Zenith Radio Corp | Code storage device |
-
0
- NL NL225293D patent/NL225293A/xx unknown
- NL NL109840D patent/NL109840C/xx active
-
1957
- 1957-02-26 DE DET13281A patent/DE1054491B/en active Pending
-
1958
- 1958-02-07 US US713933A patent/US3038028A/en not_active Expired - Lifetime
- 1958-02-17 FR FR1198894D patent/FR1198894A/en not_active Expired
- 1958-02-26 GB GB6306/58A patent/GB874890A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL225293A (en) | |
US3038028A (en) | 1962-06-05 |
FR1198894A (en) | 1959-12-10 |
NL109840C (en) | |
DE1054491B (en) | 1959-04-09 |
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