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Class Information
Number: 380/37
Name: Cryptography > Communication system using cryptography > Time segment interchange > Block/data stream enciphering
Description: Subject matter wherein time interchanged data segments are processed either in discrete blocks, or a continuous stream, of bits or pulses which serially comprise the message stream.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6490353 |
Data encrypting and decrypting apparatus and method |
Dec. 3, 2002 |
| 6466669 |
Cipher processor, IC card and cipher processing method |
Oct. 15, 2002 |
| 6459792 |
Block cipher using key data merged with an intermediate block generated from a previous block |
Oct. 1, 2002 |
| 6415030 |
Data transformation apparatus and data transformation method |
Jul. 2, 2002 |
| 6415032 |
Encryption technique using stream cipher and block cipher |
Jul. 2, 2002 |
| 6411712 |
Digital broadcast receiver |
Jun. 25, 2002 |
| 6408074 |
Hardware architecture for a configurable cipher device |
Jun. 18, 2002 |
| 6381331 |
Information sending system and method for sending encrypted information |
Apr. 30, 2002 |
| 6370247 |
Hash value generating method and device, data encryption method and device, data decryption method and device |
Apr. 9, 2002 |
| 6363479 |
System and method for signing markup language data |
Mar. 26, 2002 |
| 6347143 |
Cryptographic device with encryption blocks connected parallel |
Feb. 12, 2002 |
| 6345100 |
Robust watermark method and apparatus for digital signals |
Feb. 5, 2002 |
| 6324288 |
Cipher core in a content protection system |
Nov. 27, 2001 |
| 6324286 |
DES cipher processor for full duplex interleaving encryption/decryption service |
Nov. 27, 2001 |
| 6320965 |
Secure watermark method and apparatus for digital signals |
Nov. 20, 2001 |
| 6320964 |
Cryptographic accelerator |
Nov. 20, 2001 |
| 6311271 |
How to sign digital streams |
Oct. 30, 2001 |
| 6301362 |
Method and apparatus for cryptographically transforming an input block into an output block |
Oct. 9, 2001 |
| 6269163 |
Enhanced block ciphers with data-dependent rotations |
Jul. 31, 2001 |
| 6269164 |
Method of and system for encrypting messages |
Jul. 31, 2001 |
| 6266412 |
Encrypting speech coder |
Jul. 24, 2001 |
| 6266411 |
Method and apparatus for multiple-iteration CMEA encryption and decryption for improved security for wireless telephone messages |
Jul. 24, 2001 |
| 6252961 |
Method and apparatus for performing data encryption and error code correction |
Jun. 26, 2001 |
| 6249582 |
Apparatus for and method of overhead reduction in a block cipher |
Jun. 19, 2001 |
| 6249583 |
On-line signal processing method |
Jun. 19, 2001 |
| 6243470 |
Method and apparatus for advanced symmetric key block cipher with variable length key and block |
Jun. 5, 2001 |
| 6243469 |
Information transmission method and apparatus |
Jun. 5, 2001 |
| 6226742 |
Cryptographic technique that provides fast encryption and decryption and assures integrity of a ciphertext message through use of a message authentication code formed through cipher block chai |
May. 1, 2001 |
| 6219420 |
High assurance encryption system and method |
Apr. 17, 2001 |
| 6201869 |
Data transformation apparatus and data transformation method |
Mar. 13, 2001 |
| 6195677 |
Distributed network computing system for data exchange/conversion between terminals |
Feb. 27, 2001 |
| 6195752 |
Electronic data processing circuit |
Feb. 27, 2001 |
| 6192129 |
Method and apparatus for advanced byte-oriented symmetric key block cipher with variable length key and block |
Feb. 20, 2001 |
| 6189095 |
Symmetric block cipher using multiple stages with modified type-1 and type-3 feistel networks |
Feb. 13, 2001 |
| 6185680 |
Packet authentication and packet encryption/decryption scheme for security gateway |
Feb. 6, 2001 |
| 6185679 |
Method and apparatus for a symmetric block cipher using multiple stages with type-1 and type-3 feistel networks |
Feb. 6, 2001 |
| 6185304 |
Method and apparatus for a symmetric block cipher using multiple stages |
Feb. 6, 2001 |
| 6161181 |
Secure electronic transactions using a trusted intermediary |
Dec. 12, 2000 |
| 6145079 |
Secure electronic transactions using a trusted intermediary to perform electronic services |
Nov. 7, 2000 |
| 6128737 |
Method and apparatus for producing a message authentication code in a cipher block chaining operation by using linear combinations of an encryption key |
Oct. 3, 2000 |
| 6128386 |
Multiple number base encoder/decoder using a corresponding exclusive or function |
Oct. 3, 2000 |
| 6125182 |
Cryptographic engine using logic and base conversions |
Sep. 26, 2000 |
| 6125183 |
Cryptosystem for optical storage |
Sep. 26, 2000 |
| 6122375 |
Hash value generating method and device, data encryption method and device, data decryption method and device |
Sep. 19, 2000 |
| 6122378 |
Data compression/encryption method and system |
Sep. 19, 2000 |
| 6108421 |
Method and apparatus for data encryption |
Aug. 22, 2000 |
| 6081895 |
Method and system for managing data unit processing |
Jun. 27, 2000 |
| 6078666 |
Audio signal processing method and related device with block order switching |
Jun. 20, 2000 |
| 6075859 |
Method and apparatus for encrypting data in a wireless communication system |
Jun. 13, 2000 |
| 6072873 |
Digital video broadcasting |
Jun. 6, 2000 |
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