A secure container, for example a portable cassette for banknotes, has a shutter at one end movable by a sliding shutter bar (2). The shutter is lockable by the action of a shutter locking bar (8) pivoted at its center between a locking position (as shown in FIG. 1) and a primed position at which the shutter locking bar is parallel to the container walls and its end is aligned with an aperture 2a in the shutter bar (2) allowing the shutter bar to slide within the container and open the shutter. ...

An apparatus and method is disclosed for the protection of computer programs through the use of the principles of conditional inversion and permutation. These security features are designed as part of the chip in a fashion to minimize the changes required to any existing microprocessor design and to be transparent to firmware execution. The programs are first encrypted by permutation which reorders the lines according to an allocated scheme and then conditionally inverted through a set of dual i...

There is described a rectangular shaped security cabinet having a door opening which is closed by a tambour door. The door is made from a plurality of interlocking slats capable of limited flexure relative to one another, the slats having interlocking hooked tongues on the upper faces which lockingly engage with slots on the lower faces. A protection barrier extends from the top face behind the hooked tongue and inhibits access to the joint formed by the hooked tongue and the receiving slots. Ad...

A system for generating secure command signals at a remote station, such as a branch bank, under the control of a central station, such as a main bank. Random words are independently generated at each station and transmitted to the other station. Both random words are compared at each station and the comparisons are ANDed at the remote station. Exact coincidence produces the command signal.

A security node disposed in the telecommunications network connecting calling and called parties transforms information (which can be voice, data, facsimile, video and other types of calls or messages) encrypted in a first format to (a) encrypted information in a different format or to (b) non-encrypted information, and vice-versa. The node is accessible from any location connected to the network. By routing calls or messages originated by the calling party and destined for the called party via ...

Secure teleconferencing between three or more parties is achieved by receiving encrypted information streams from each of the parties to the conference. The encrypted information streams are received in decryption/re-encryption units co-located with a conference bridge established in a telecommunication switching system in a public switched telephone network central office. The decryption/re-encryption units decrypt the information streams and then re-encrypt those information streams in accorda...

This disclosure is directed to a latch mechanism carried by a peripheral skirt of a container closure, the latch mechanism including a pair of spaced supporting straps of flexible material joined together by a bridging member, a latching hook disposed between the supporting straps and being carried by the bridging member, and the latching hook having a latching nose projecting toward the peripheral skirt whereby in the latched condition of the latch mechanism the latching nose is adapted for lat...

A holster to be carried high on the hip and having a trigger guard pocket, a muzzle pocket, and a breakfront flap which cooperate to prevent removal of the revolver from the holster. The breakfront flap is secured in the closed position by a fastening device which is released by the forefinger of the user to initiate the drawing of the revolver from the holster.

Apparatus for enciphering data to provide secure transmission including generating a stream of random signals for combining with the data to provide scrambled data signals. An intermediate sequence is provided to limit the magnitude of the change between successive random signals.

A security node disposed in the telecommunications network connecting calling and called parties transforms information (which can be voice, data, facsimile, video and other types of calls or messages) encrypted in a first format to (a) encrypted information in a different format or to (b) non-encrypted information, and vice-versa. The node is accessible from any location connected to the network. By routing calls or messages originated by the calling party and destined for the called party via ...