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1. 发明专利

GB2459735A Hybrid asymmetric / symmetric encryption scheme which obviates padding 未知
公开(公告)号：GB2459735A
公开(公告)日：2009-11-11
申请号：GB0808172
申请日：2008-05-06
申请人： WHITAKER BENJIMAN JOHN DICKSON , GODBER TOM , MASABI LTD
发明人： WHITAKER BENJIMAN JOHN DICKSON , GODBER TOM
IPC分类号： H04L9/30 , H04L9/08
摘要： The entire payload of a message is encrypted using a symmetric key. The symmetric key and the symmetrically encrypted payload are concatenated and asymmetric encryption is applied to the symmetric key and at least the first part of the payload. If the length of the concatenation exceeds the block length of the asymmetric encryption then the remainder of the payload which does not fit in the block length can be transmitted without public key protection because it is already protected by the symmetric key. In this case the symmetric key replaces the random padding used in PKCS#1 v1.5, providing efficiency gains. If the payload can fit within a single asymmetric encryption block, along with the symmetric key, then the remainder of the block is padded before asymmetric encryption. The payload preferably includes, in addition to plaintext data, a message authentication code (MAC) or similar checksum. The symmetric key is preferably a session key. The invention may be applied to communication between client and server. The encryption scheme disclosed is said to be "probabilistic", and provides protection against plain-text aware attacks.

2. 发明专利

GB237094A An improved motive mechanism for a flapping-wing aerial machine 未知
公开(公告)号：GB237094A
公开(公告)日：1925-07-23
申请号：GB1704624
申请日：1924-07-16
申请人： JOHN DICKSON BATTEN
IPC分类号： B64C33/00
摘要： 237,094. Batten, J. D. July 16, 1924. Ornithopters; propelling; land wheels and skid.s.-The main spars of a Rapping wing machine are assisted on the downstroke by the resilience of twisted skeins of silk hemp, steel bands or other tensile substance. The main wing spars d are connected by cords to ausiliax‹y spars c and both main and auxiliary spars are passed through crossed tubes s at the centres of the twisted skeins which are secured to the framework by similar cross-heads q and tensioning bolts. The inner ends of the spars d are connected to vertical rods f guided by pivoted links g. Crossed members h pivoted to one another at j and to the rods f at j are guided at their lower ends by rollers, k engaging the rods f. The pivots j support a saddle for the pilot who grasps hand rails m on the rods f, shoulder straps, not shown, also being connected to the rods m. The main spars are strengthened at their pivots by sheaths. The downstroke of the wings is effected by the pilot pressing his feet against a platform l on the main frame, and the upstroke is effected by allowing his weight to come on the saddle. Small wheels are carried on levers 111 which engage hooks o on the rods f as the machine alights in order to raise the wings. Main landing wheels p and a tail skid are provided. Specification 209,807 is referred to. The Provisional Specification describes a wing spar acted upon by a single twisted skein.

3. 发明专利

GB209807A An improved motive mechanism for a man-power flapping-wing aerial machine 未知
公开(公告)号：GB209807A
公开(公告)日：1924-01-14
申请号：GB2793022
申请日：1922-10-14
申请人： JOHN DICKSON BATTEN
IPC分类号： B64C33/00
摘要： 209,807. Batten, J. D. Oct. 14, 1922. Propelling-The downstroke of the wings of a flapping machine is effected by the pilot extending his legs with the assistance of rubber and helical springs acting on the wings to move them in the same direction, the upstroke taking place without anv muscular or mechanical assistance. The Figure shows one form of the apparatus in which wing-spars i, pivoted to the main frame at h, have stayed brackets k at their inner ends acted upon by opposed tension springs n and compression springs o. Rubber springs r also act upon the spars in the same sense. The inner ends of the springs o, n bear against a fixed plate q. A rod p passing through the compression springs o slides in slots in the ends of the brackets k. A spar s, connected to the wing spars i by rods or cables w and to the rear part of the frame by links t, is pressed down during the downstroke by the legs of the pilot, who is provided with a sling seat f and shoulder straps g secured to the frame. According to the Provisional Specification, the inner ends of the wing spars are extended inwards and are acted upon by vertical tension and compression springs placed respectively above and below the spars.

4. 发明专利

FR360391A 未知
公开(公告)号：FR360391A
公开(公告)日：1906-04-20
申请号：FR360391D
申请日：1905-12-13
申请人： MORRIS CHARLES LAMB , JOHN DICKSON GIBSON RENNIE
发明人： LAMB MORRIS CHARLES , RENNIE JOHN DICKSON GIBSON
IPC分类号： D06P3/32

5. 发明专利

GB960179A A method of and means for repelling birds 未知
公开(公告)号：GB960179A
公开(公告)日：1964-06-10
申请号：GB2693462
申请日：1962-07-13
申请人： JOHN DICKSON CAMERON
IPC分类号： A01M29/32
摘要： Apparatus for deterring birds for perching or nesting on buildings comprises a series of members freely rotatably mounted on the building so that they rotate under the weight of a bird landing thereon. The members may comprise short tubes or beads threaded on a wire, nylon line or rod secured to brackets which are attached to the building.

6. 发明专利

GB845932A Apparatus for banding stationery and other articles 未知
公开(公告)号：GB845932A
公开(公告)日：1960-08-24
申请号：GB3917357
申请日：1957-12-17
申请人： JOHN DICKSON & CO LTD
发明人： RANDALL JOHN WILLIAM
IPC分类号： B65B27/08
摘要： 845,932. Photo-electric controls. DICKINSON & CO. Ltd. J. Dec. 17, 1957, No. 39173/57. Class 40(3). [Also in Groups XVI and XVII] In apparatus for banding flat articles (see Group XVII) articles A are fed to the banding station by a conveyer B and their corners interrupt an inclined beam of light from a scanning head 10 which is adjustable along a rail 11. The light beam is reflected by an adjustable mirror 15 on to a photo-electric cell 17 controlling a solenoid (not shown) which operates trip mechanism to prevent feeding of bands if there is a gap in the succession of articles.

7. 发明专利

GB190517338A Printing on Leather 未知
公开(公告)号：GB190517338A
公开(公告)日：1905-11-16
申请号：GB190517338D
申请日：1905-08-28
申请人： LAMB MORRIS CHARLES , RENNIE JOHN DICKSON GIBSON
发明人： LAMB MORRIS CHARLES , RENNIE JOHN DICKSON GIBSON
摘要： 17,338. Lamb, M. C., and Rennie, J.D.G. Aug.28. Ornamenting.-To produce ornamental designs in colour on leather, a transfer is first prepared on paper, calico, or other medium, by freehand or printing in a calico-printing, letterpress, or lithographic machine, or other well-known method. The colours employed are those known as fatcolours, which dissolve in benzine or turpentine, the necessary consistency being obtained by the addition of petroleum jelly, solid petroleum, or the like. The transfer, when dry, is laid on the leather and ironed with hot smoothing-irons or rollers. The oil solvent of the colours is thus liquefied and the colours transferred to the leather. Specifications No. 2316, A.D. 1880, and No. 23,305, A.D. 1897, [Abridgment Class Printing other than letterpress &c.], are referred to.

8. 发明专利

AU5523494A An adjustable foil shaped keel for sailing vessels 未知
公开(公告)号：AU5523494A
公开(公告)日：1994-08-25
申请号：AU5523494
申请日：1994-02-17
申请人： ANTHONY JOHN DICKSON
发明人： DICKSON ANTHONY JOHN
IPC分类号： B63B39/06 , B63B41/00

9. 发明专利

GB2115514A Extractor 未知
公开(公告)号：GB2115514A
公开(公告)日：1983-09-07
申请号：GB8204826
申请日：1982-02-18
申请人： CAMERON JOHN DICKSON
发明人： CAMERON JOHN DICKSON
IPC分类号： B08B9/043 , E03C1/302 , B08B9/02 , H02G1/00
摘要： An extractor for removing plunger canes from a drain pipe comprises a nose cone section having channels on its conical surface which serve to divert a plunger cane so as to engage a circular cut-out formed in a flexible engagement disc fitted at the base of the diverting nose cone.

10. 发明专利

GB190928768A Improvements in or relating to Umbrella Runners. 未知
公开(公告)号：GB190928768A
公开(公告)日：1910-09-29
申请号：GB190928768D
申请日：1910-04-08
申请人： ROBERTSON JOHN DICKSON
发明人： ROBERTSON JOHN DICKSON
IPC分类号： A45B25/08
摘要： 28,768. Robertson, J. D. April 8, 1910. Holding open and closed.-The runner has a pivoted catch with a pin b projecting below the runner to take into holes in the stick in the open and closed positions. The catch is controlled by a spring with two extended ends b , b . A notch B in the runner-wheel provides a seating for a pin in the stick, in the open position. In a modification, a leaf-spring depending from the finger lever is used. Where the stick is of wood, the holes therein may be eyeleted. Reference has been directed by the Comptroller to Specifications 2719/74, 15,723/92, and 17,183/98.

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