TH41120B - A process for manipulating symmetric index keys in communication networks and devices for the implementation of such processes. - Google Patents

Abstract

DC60 (31/10/56) The communications network consists of one (1) type of device mounted to a power source. Generate information that will be spread on the network. and at least one (2) type of second device intended to receive such information. It consists of the following steps - The source device (1) determines the first symmetric key (Kc) and transmits this key firmly (E1 {PUB 2}(Kc)) to the receiving device. (2) At least one - The receiver device (2) will accept the first symmetric key (Kc) encrypt this index key (E2) with the assistance of the second symmetric key (Kn) familiar to the device. The receiver (2) of the network and sends the encrypted index to the source device - the source device (1) retrieves the cryptographic (E2 {Kn}(Kc)) of the first symmetric key (Kc). and stored before transmission (CW) to at least one receiving device (2). The source device (1) encrypts (E3) these data with the aid of a first symmetric key (Kc ) The device then transmits these encrypted data (E3 {Kc}(CW)) together with the first encrypted symmetric key (E2 {Kn}(Kc)) to the receiver device (2 ) at least one receiver device (2) decrypts the first symmetric key (Kc) with the assistance of a The second key (Kn), which the device has Subsequently, the device will decrypt. input data The secret code with the help of the first symmetric key is recovered like this. The invention also has to do with devices for making the process work. A communications network consists of one (1) device installed on the source. Generate information that will be spread on the network. and at least one (2) second device intended to receive such information. It consists of the following steps - The source device (1) determines to assign a first symmetric index key (Kc) and securely transmits this index key ( E1 {PUB2}(Kc)) to the machine device. Receive (2) At Least One - The receiver (2) will receive the first symmetric index key (Kc). Encrypt this index key (E2) with the assistance of the second symmetric index key (Kn) at familiar with The receiver device (2) of the network and sends an encrypted index to the source device - the source device (1) retrieves the cryptographic (E2 {Kn}(Kc)) of the index key. First symmetric (Kc) and stored before transmitting (CW) to at least one receiving device (2). The source device (1) encrypts (E3) these data with the help of style index key First symmetric (Kc) The device then transmits these encrypted data (E3 {Kc}(CW)) together with the first cryptographic symmetric index key (E2 {Kn}(Kc)). At least one (2) receiver device The receiver device (2) decrypts the first symmetric index key (Kc) with the assistance of the second index key (Kn). Subsequently, the device will decrypt. Data encrypted with the help of a symmetric first index key recovered like this. Invention also has to do with devices for making the process work.

Claims (2)

Disclaimer (all) that will not appear on the advertisement page: 1. The process of managing symmetric index keys in a communication network includes: a type of device. Installed with at least one second type of data source to spread over networks and devices. That intends to receive such information Make the process It includes the steps of: (a) Determining the first symmetric key. , Symmetric key encryption that One to create a symmetric key that is encrypted And a key transmission The encoded first symmetry goes to at least one second type of device by the first type of device. By at least one second type of device, first symmetric key receiving encrypted, decryption of the first symmetric key that was encrypted to retrieve. First symmetric key encrypted, First symmetric key encryption It is encrypted using the key of the second symmetry to generate First symmetric key, encrypted with the second symmetric key by the key. Such a second symmetrical design is known by at least one second type of device. Network piece And the first symmetrical key transmission that is encrypted with a key This second symmetry is characterized by a type 1 device. 2. The process according to claim 1 makes it special, while the process remains unchanged. The various phases of (d) are further incorporated with a device of type one (1) encryption (E3) with the help of a key. First symmetric index (Kc) data (CW) to be transmitted to at least one second type (2) device (e) with the first type (1) device. Transmissions (4.9) encrypted data. Secret (E3 {Kc} (CW)) and first encrypted symmetrical key (E2 {Kn} (Kc)) go to at least one second (2) type of device (f) with the device. The second (2) type, at least one piece. Decryption (4.10) First symmetric index key (Kc) encrypted with at least one second type of device by It is assisted by the second symmetric index key (Kn) and the decryption (4.11) of the encrypted data by the aid of the restored first symmetric index key (Kc). Item 1 and 2 either Make it look special where The device of type one (1) stores a number of first unencrypted symmetric key (Kc) and a number of first-encrypted symmetric key (E2 {Kn} (Kc)) that are inserted. It corresponds to an unencrypted index key in a parallel manner. 4. Process of claim 1 to 3. Make it look special where Make at least one new level of symmetrical index key improvements during batch transmission. New order of information Or several times during the transmission of the sequence of data. 5. Process according to Clause 1 to 4, any one Make it look special where The process also includes the status of installing a new second type of equipment in the network. The installation status includes a verification phase (2.1) of existing second type of equipment. First then in the network Possession of a second symmetric index key (Kn) and the ability to consistently and confirm the transmission of the index key (2.3) the second symmetric index key (Kn) to the device. Second type, new and rejecting phase of formation (2.6) Second symmetric index key (Kn) with the second type of device re-established 6. Communication device (1) suitable for connection to the network. Communication network The device includes - method (14) of decrypted data encryption (CW), which is characterized by that encryption path (14) uses cryptographic algorithms (E3), which makes The first symmetric index key (Kc) takes effect, and the device continues to be assembled - a memory consisting of an encrypted symmetric first index key (E2 {Kn} (Kc)) based on Second index (Kn) keys familiar to at least one (2) receiver device associated with the network and - path (10,15) of encrypted data transmission based on Help of the way Encryption (14) over the network 7. Devices in accordance with claim 6 are also incorporated to complement the (13) method of decrypting the wrist cipher caused by the source of the encrypted data. According to claim 7, it is characterized by providing a means of encrypting (14) in order to frequently revise the first symmetrical index (Kc) key. Where 6 to 8 either This makes it special in that the two index keys (Kn) are symmetrical. 1 0. Devices for processing data (2) in communication networks make them look like. In particular, the device consists of - method (23) of decryption of the first symmetric index (Kc) key obtained in the encrypted manner (E2 {Kn} (Kc)) from the machine tool. Network Key encryption The first symmetric index (Kn) was achieved through the help of the second symmetric index (Kn) key - memory to contain the second symmetric index (Kn) key in conjunction with the machine. All devices, all defined types of the network, and - (23) means of decrypting the encrypted information received from the network (LECM) with the help of the first symmetric index key (Kc) 1. 1. The equipment according to claim No. 10 makes it special, provided that the equipment is assembled. Combined with the method of solving the clutter (24) information received from the network. Way of solving Such baffling uses the (CW) effect of decrypting the data. (LECM) implemented to achieve results. With the help of the first symmetrical index key (Kc) 1 2. Any equipment according to Clause 10 or 11 Make it look special where The memory is additionally incorporated with a pair of symmetrical index keys (PRIV2, PUB2) for stable transmission. Go to the aforementioned processing device (2) of the pattern index key. First symmetrical (Kc) and where the device is additionally assembled Method of encryption (23) Symmetrical Index Key (Kc) using the help of the index key. Second symmetrical (Kn) design for returning to the appliance (1) of the network that performs Send the first symmetrical index key (Kc).