GB927514A - Improvements in or relating to keying devices for cryptographic apparatus - Google Patents
Improvements in or relating to keying devices for cryptographic apparatusInfo
- Publication number
- GB927514A GB927514A GB1955459A GB1955459A GB927514A GB 927514 A GB927514 A GB 927514A GB 1955459 A GB1955459 A GB 1955459A GB 1955459 A GB1955459 A GB 1955459A GB 927514 A GB927514 A GB 927514A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bars
- wheel
- keying
- drum
- operative position
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
Classifications
-
- 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
- G09C1/08—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 mechanical
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Lock And Its Accessories (AREA)
Abstract
927,514. Ciphering. ANSTALT EUROPAISHE HANDELGESELLSCHAFT. June 8, 1959 [June 7, 1958], No. 19554/59. Class 146 (2). The cryptographic device keying mechanism described in Specification 742,181 is modified to ensure that while the keying members are irregularly advanced no combination will recur until all possible other combinations have occurred once. Thus the slide bar drum 14 is provided with a lug 6 which ensures that the first key wheel 9 is advanced one step every revolution and the actuating slide bars 1-3 are provided with lugs 5, to engage the intermediate wheels 7, so positioned in relation to lugs 4, which displace the slide bars to their operative position, that the bars are only placed in an operative position by a control member 8 associated with a preceding keying member and not by a control member associated with a following keying member. Thus if in a revolution of the drum 14 a pin 13 on the wheel 9 is in an operative position all the bars 1-3 will be moved to their operative position to operate each keying wheel 10-12 while if a pin 13 is not operative on the wheel 9 but is on the wheel 10 only the bars 1, 2 will be moved. In modifications instead of the key wheels being used to control a ciphering teletypewriter as described in Specification 742,181 a mechanism can be controlled in response to the position of the slide bars or alternatively the key wheels may be constructed as electric commutators. Further modifications may include the provision of fixed bars on the drum 14 which give additional steps to the intermediate wheels 7 during each drum revolution while the whole device may be electro-mechanical or purely electrical instead of mechanical. Specification 455,333 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH6035358A CH362555A (en) | 1958-06-07 | 1958-06-07 | Arrangement for switching a group of elements with an irregular sequence of steps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB927514A true GB927514A (en) | 1963-05-29 |
Family
ID=4522897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1955459A Expired GB927514A (en) | 1958-06-07 | 1959-06-08 | Improvements in or relating to keying devices for cryptographic apparatus |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH362555A (en) |
| DK (1) | DK107846C (en) |
| GB (1) | GB927514A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE977719C (en) * | 1962-12-29 | 1968-08-29 | Philips Usfa Nv | Switching device for a group of switching elements of a 0-1 generator |
| CH515576A (en) * | 1970-08-20 | 1971-11-15 | Hagelin Boris Caesar Wilhelm | Device for encryption and decryption of multi-digit coded signals |
-
1958
- 1958-06-07 CH CH6035358A patent/CH362555A/en unknown
-
1959
- 1959-06-06 DK DK203059A patent/DK107846C/en active
- 1959-06-08 GB GB1955459A patent/GB927514A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK107846C (en) | 1967-07-10 |
| CH362555A (en) | 1962-06-15 |
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