Class / Patent application number | Description | Number of patent applications / Date published |
380277000 |
KEY MANAGEMENT
| 1735 |
380255000 |
COMMUNICATION SYSTEM USING CRYPTOGRAPHY
| 1476 |
380028000 |
PARTICULAR ALGORITHMIC FUNCTION ENCODING
| 1001 |
380200000 |
VIDEO CRYPTOGRAPHY
| 432 |
380247000 |
CELLULAR TELEPHONE CRYPTOGRAPHIC AUTHENTICATION
| 71 |
380287000 |
ELECTRIC SIGNAL MODIFICATION
| 69 |
380243000 |
FACSIMILE CRYPTOGRAPHY
| 58 |
380252000 |
ELECTRIC SIGNAL MASKING
| 39 |
380054000 |
BY MODIFYING OPTICAL IMAGE (E.G., TRANSMISSIVE OVERLAY)
| 17 |
380002000 |
EQUIPMENT TEST OR MALFUNCTION INDICATION
| 15 |
380001000 |
CRYPTANALYSIS
| 10 |
380251000 |
ELECTRONIC GAME USING CRYPTOGRAPHY
| 7 |
380055000 |
HAVING PRODUCTION OF PRINTED COPY (E.G., CRYPTOGRAPHIC PRINTER OR TYPEWRITER)
| 6 |
380059000 |
MISCELLANEOUS | 3 |
20090116643 | ENCRYPTION APPARATUS, DECRYPTION APPARATUS, AND CRYPTOGRAPHY SYSTEM - Provided is a technology with which an electronic document including a plurality of elements such as texts and images may be partially encrypt and decrypt. An encryption-processing control unit receives a selection of electronic data included in an electronic document and a selection of an encryption key for encrypting the electronic data from among encryption keys stored in a storing unit. The encryption-processing control unit generates encrypted area data including partially encrypted data obtained by encrypting the selected electronic data with the selected encryption key, positional information for specifying a position of the selected electronic data in the electronic document, and decryption information including information that may specify a decryption key with which the partially encrypted data may be decrypted, and adds the encrypted area data to the electronic document. | 05-07-2009 |
20090129593 | Semiconductor device and method for operating the same - It is an object of the present invention to provide a wireless chip in which a hardware thereof is not required to be modified in each time that encryption algorithm with higher security is developed. In a wireless chip, a circuit capable of communicating information by wireless communication, a CPU, and a memory are included. In the memory, two or more regions, of each a region to which an encryption program is assigned and a region to which a decryption is assigned, are included. Accordingly, a wireless chip in which an encryption/decryption program can be rewritten without modifying a hardware structure can be provided. | 05-21-2009 |
20100054468 | VALIDATING COMPRESSED ARCHIVE KEYS - An apparatus and a method for validating compressed encrypted archive keys is described. In one embodiment, a pseudo-stream is generated for an archive. The pseudo-stream is made of a small amount of random text. The pseudo-stream is attached to a stream of the archive. The pseudo-stream and stream are compressed using the compression algorithm that includes validation data. The compressed pseudo-stream is then enciphered with an archive key. | 03-04-2010 |
380056000 |
SELECTIVELY MOVABLE ELEMENT HAVING CODE CHARACTERS | 2 |
20090080652 | SYSTEM AND METHOD FOR PASSWORD GENERATION AND STORAGE - A mechanical device may have one or more user inputs and one or more password outputs to provide a plurality of secure passwords. A user may set and recover passwords by transposing one or more mechanical components of the device. A user may carry the device, but if the device is lost or stolen another individual may be unable to access any of the stored passwords. | 03-26-2009 |
20150294600 | ENCRYPTION AND DECRYPTION DEVICE AND METHOD - An encryption device and method for creating, storing and retrieving passwords is provided. The encryption device may include a sleeve for receiving a slidable card, both cooperative so that the sleeve and the slidable card are movable relative to each other. The sleeve forms an index window and an encryption window through which a portion of a set of index symbols and a portion of a set of encryption symbols imprinted on the slidable card may be respectively read. As the slidable card slides to display a new portion of the set of index symbols through the index window, a new portion of the set of encryption symbols become readable through the encryption window. The method embodying the encryption device utilizes a skip sequence number formula, a hint, and/or at least one unforgettable number to create a plurality of unique, encrypted passwords that can be similarly retrieved/decrypted with the encryption device and method when needed. | 10-15-2015 |