| Patent No. | Patent Title: |
| 6690795 | Multiple keys for decrypting data in restricted-access television... |
| 6088452 | Encoding technique for software and hardware |
| 5923759 | System for securely exchanging data with smart cards |
| 5917910 | Encrypting method and apparatus, recording method, decrypting met... |
| 5915017 | Method and apparatus for securing programming data of programmabl... |
| 5912969 | Information receiving and recording/reproducing apparatus/method ... |
| 5907617 | Try before you buy software distribution and marketing system |
| 5907621 | System and method for session management |
| 5903647 | Self-launching encrypted digital information distribution system |
| 5903652 | System and apparatus for monitoring secure information in a compu... |
| 5901224 | Quasi-reprographics with variable embedded data with applications... |
| 5900927 | Variable target autofocusing and range finder for measuring dista... |
| 5892827 | Method and apparatus for generating personal identification numbe... |
| 5892826 | Data processor with flexible data encryption |
| 5889860 | Encryption system with transaction coded decryption key |
| 5887060 | Central database system for automatic software program sales |
| 5884026 | Personal computer having a security function, a method of impleme... |
| 5883954 | Self-launching encrypted try before you buy software distribution... |
| 5883955 | On-line try before you buy software distribution system |
| 5881154 | Data scramble transmission system |
| 5878137 | Method for obtaining authenticity identification devices for usin... |
| 5878134 | Secure access systems utilizing more than one IC card |
| 5872848 | Method and apparatus for witnessed authentication of electronic d... |
| 5870475 | Facilitating secure communications in a distribution network |
| 5857025 | Electronic encryption device and method |
| 5857023 | Space efficient method of redeeming electronic payments |
| 5841871 | Method for authenticating a user working in a distributed environ... |
| 5841873 | Methods of detecting decryption errors |
| 5838795 | Method and apparatus for statistical diffusion in iterated block ... |
| 5838796 | Statistically optimized bit permutations in interated block subst... |
| 5838794 | Method and apparatus for inter-round mixing in iterated block ... |
| 5835601 | File editing system and shared file editing system with file cont... |
| 5835600 | Block encryption algorithm with data-dependent rotations |
| 5831717 | Obstacle detecting apparatus which employs a laser |
| 5832089 | Off-line compatible electronic cash method and system |
| 5828752 | Pseudo-random number generator and communication system employing... |
| 5825875 | Process for loading a protected storage zone of an information ... |
| 5825879 | System and method for copy-protecting distributed video content |
| 5825887 | Transmitting and receiving apparatus for full code correlation op... |
| 5825892 | Protecting images with an image watermark |