| |
Pat.
No. |
Title |
| 501. |
5,305,384
Apparatus, system and method for transmitting secure signals over narrow
spaced channels Apr. 19, 1994 |
| 502. |
5,303,293
Cryptographic device with a display means for identification of a defective
function in the cryptographic device |
| 503. |
5,301,247
Method for ensuring secure communications |
| 504. |
5,301,234
Radiotelephone installation for prepayment operation with security
protection |
| 505. |
5,301,232
Method and apparatus for over-the-air programming of communication devices |
| 506. |
5,299,263
Two-way public key authentication and key agreement for low-cost terminals |
| 507. |
5,297,800
Ultra-enigma code game |
| 508. |
5,297,208
Secure file transfer system and method |
| 509. |
5,297,207
Machine generation of cryptographic keys by non-linear processes similar
to processes normally associated with encryption of data |
| 510. |
5,295,188
Public key encryption and decryption circuitry and method |
| 511. |
5,293,576
Command authentication process |
| 512. |
5,293,029
System for mutually certifying an IC card and an IC card terminal |
| 513. |
5,289,542
Caller identification system with encryption |
| 514. |
5,285,497
Methods and apparatus for scrambling and unscrambling compressed data
streams |
| 515. |
5,283,832
Paging message encryption |
| 516. |
5,283,829
System and method for paying bills electronically |
| 517. |
5,283,828
Architecture for utilizing coprocessing systems to increase performance in
security adapted computer systems |
| 518. |
5,280,529
Communication network intended for secure transmissions |
| 519. |
5,278,905
Method and apparatus for processor base encryption |
| 520. |
5,274,567
Table top image based document processing machine and methods of processing
documents |
| 521. |
5,271,582
Modular mother satellite bus for subsidiary payloads |
| 522. |
5,271,061
Method and apparatus for public key exchange in a cryptographic system |
| 523. |
5,271,023
Uninterruptable fault tolerant data processor |
| 524. |
5,268,962
Computer network with modified host-to-host encryption keys |
| 525. |
5,267,313
File security system |
| 526. |
5,265,162
Portable pin card |
| 527. |
5,265,159
Secure file erasure |
| 528. |
5,265,093
Hardware interface and protocol for a mobile radio transceiver |
| 529. |
5,261,003
Data communication system and method with data scrambling |
| 530. |
5,261,001
Microcircuit for the implementation of RSA algorithm and ordinary and modular
arithmetic, in particular exponentiation, with large operands |
| 531. |
5,253,294
Secure transmission system |
| 532. |
5,249,232
Data processing system having an encryption device |
| 533. |
5,247,577
Methods and apparatus for securely enabling features in highly integrated
electronic circuits |
| 534. |
5,247,576
Key variable identification method |
| 535. |
5,247,575
Information distribution system |
| 536. |
5,245,660
System for producing synchronized signals |
| 537. |
5,245,658
Domain-based encryption |
| 538. |
5,243,653
Method and apparatus for maintaining continuous synchronous encryption and
decryption in a wireless communication system throughout a hand-off |
| 539. |
5,243,650
Method and apparatus for encryption/decryption of digital multisound in
television |
| 540. |
5,243,649
Apparatus and method for quantum mechanical encryption for the transmission
of secure communications |
| 541. |
5,241,599
Cryptographic protocol for secure communications |
| 542. |
5,241,597
Method for recovering from encryption key variable loss |
| 543. |
5,239,584
Method and apparatus for encryption/authentication of data in energy metering
applications |
| 544. |
5,239,294
Method and apparatus for authenication and protection of subscribers in
telecommunication systems |
| 545. |
5,237,616
Secure computer system having privileged and unprivileged memories |
| 546. |
5,237,614
Integrated network security system |
| 547. |
5,237,611
encryption/decryption apparatus with non-accessible table of keys |
| 548. |
5,235,644
Probabilistic cryptographic processing method |
| 549. |
5,235,641
File encryption method and file cryptographic system |
| 550. |
5,228,084
Security apparatus and system for retail environments |
| 551. |
5,228,076
High fidelity speech encoding for telecommunications systems |
| 552. |
5,227,613
Secure encrypted data communication system having physically secure IC cards
and session key generation based on card identifying information |
| 553. |
5,224,163
Method for delegating authorization from one entity to another through the
use of session encryption keys |
| 554. |
5,222,141
Apparatus and method for encoding data |
| 555. |
5,222,140
Cryptographic method for key agreement and user authentication |
| 556. |
5,222,139
Cryptographic method and apparatus |
| 557. |
5,222,137
Dynamic encryption key selection for encrypted radio transmissions |
| 558. |
5,222,136
Encrypted communication system |
| 559. |
5,220,606
Cryptographic system and method |
| 560. |
5,214,704
Nonlinear dynamic substitution devices and methods for block substitutions |
| 561. |
5,214,703
Device for the conversion of a digital block and use of same |
| 562. |
5,212,729
Computer data security device and method |
| 563. |
5,210,710
Modulo arithmetic processor chip |
| 564. |
5,208,859
Method for rekeying secure communication units by group |
| 565. |
5,208,853
Method and apparatus for usage protection of data files using split key and
unique variable |
| 566. |
5,206,906
Video scrambling system |
| 567. |
5,206,863
Processor-to-processor communications protocol for a public service trunking
system |
| 568. |
5,204,902
Cellular telephony authentication arrangement |
| 569. |
5,204,901
Public key cryptographic mechanism |
| 570. |
5,202,921
Method and apparatus for authenticating users of a communication system to
each other |
| 571. |
5,199,074
encryption system |
| 572. |
5,199,072
Method and apparatus for restricting access within a wireless local area
network |
| 573. |
5,199,069
Automatic encryption selector |
| 574. |
5,195,136
Method and apparatus for data encryption or decryption |
| 575. |
5,193,114
Consumer oriented smart card system and authentication techniques |
| 576. |
5,189,700
Devices to (1) supply authenticated time and (2) time stamp and authenticate
digital documents |
| 577. |
5,185,798
IC card system having a function of authenticating destroyed data |
| 578. |
5,185,797
Encrypted trunked control channel system |
| 579. |
5,185,796
encryption synchronization combined with encryption key identification |
| 580. |
5,179,591
Method for algorithm independent cryptographic key management |
| 581. |
5,179,517
Game machine data transfer system utilizing portable data units |
| 582. |
RE34,161
Memory cartridge and information processor unit using such cartridge |
| 583. |
5,175,866
Fail-soft architecture for public trunking system |
| 584. |
5,175,766
Signalling scheme for controlling data encryption device in an electronic
fund transaction processing system |
| 585. |
5,175,765
Robust data broadcast over a distributed network with malicious failures |
| 586. |
5,173,938
Key management system |
| 587. |
5,172,414
Speech and control message encrypton in cellular radio |
| 588. |
5,172,413
Secure hierarchial video delivery system and method |
| 589. |
5,168,523
Method of rotating a word constituted by binary elements and arrangement
in which the said method is carried out |
| 590. |
5,168,521
Method of executing an irregular permutation of data protected by
encryption |
| 591. |
5,166,978
Encoding system according to the so-called RSA method, by means of a
microcontroller and arrangement implementing this system |
| 592. |
5,163,098
System for preventing fraudulent use of credit card |
| 593. |
5,161,193
Pipelined cryptography processor and method for its use in communication
networks |
| 594. |
5,161,191
encryption system for time division multiplexed networks |
| 595. |
5,161,190
System for encryption and identification |
| 596. |
5,161,189
encryption and decryption of chained messages |
| 597. |
5,159,634
Cryptosystem for cellular telephony |
| 598. |
5,159,633
Multimedia network system |
| 599. |
5,159,632
Method and apparatus for public key exchange in a cryptographic system |
| 600. |
5,159,630
Facsimile message encryption system Oct. 27, 1992 |