| 7043025 |
Method and apparatus for secured electronic commerce |
| May-9-2006 |
A user anonymously acquires a first sequence of encryption key material. An encryption server, having a second sequence complementary to the first sequence, receives and forwards encrypted messages and... |
| 7020287 |
Method and system for key insertion for stored encrypted content |
| Mar-28-2006 |
An encrypted content transport stream is received by a viewer's device and recorded for subsequent playback. During recording, keys in headers of packets of the stream are stripped and placed in sequence... |
| 7003677 |
Method for operating proactively secured applications on an insecure system |
| Feb-21-2006 |
A method for providing a proactive security in proactive operating environment. The proactive operating environment includes a group of proactive servers communicating over a network. Each proactive server... |
| 7000110 |
One-way function generation method, one-way function value generation device, proving device, authentication method, and authentication device |
| Feb-14-2006 |
Without the need to store and manage a private unique value of a hash function for each token, and without the fear of organizational private information of a center being revealed, a hash function is... |
| 6996724 |
Secret key generating method, common key generating method, encryption method, cryptographic communication method and cryptographic communication system |
| Feb-7-2006 |
At the time when generating a secret key of each entity by using each divided identification information (ID division vector) obtained by dividing identification information (ID vector) of each entity... |
| 6986043 |
Encrypting file system and method |
| Jan-10-2006 |
A system and method for encryption and decryption of files. The system and method operate in conjunction with the file system to transparently encrypt and decrypt files in using a public key-private key... |
| 6981138 |
Encrypted key cache |
| Dec-27-2005 |
A file that has been encrypted using a symmetric key and that has a corresponding access control entry with the symmetric key encrypted using the public key of a public/private key pair can be accessed.... |
| 6978367 |
Selective data encryption using style sheet processing for decryption by a client proxy |
| Dec-20-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6973191 |
System and method for generating symmetric keys within a personal security device having minimal trust relationships |
| Dec-6-2005 |
A data processing method and system for generating a unique symmetric key inside a PSD having limited trust relationships between PSD manufacture, PSD issuer, subsequent service providers and a trusted... |
| 6970836 |
System and method for securely storing electronic data |
| Nov-29-2005 |
A system and method for securely storing data provides for storing, managing, and updating an owner's secret data and for accessing the stored data by a trusted third party upon the occurrence of an event,... |
| 6965673 |
Method of using transient faults to verify the security of a cryptosystem |
| Nov-15-2005 |
A useful method of verifying the integrity of a cryptosystem involves using erroneous outputs to obtain secret information. In certain signature schemes which use the Chinese Remainder Theorem, a correct... |
| 6961849 |
Selective data encryption using style sheet processing for decryption by a group clerk |
| Nov-1-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6959091 |
Cryptography private key storage and recovery method and apparatus |
| Oct-25-2005 |
Disclosed herein is a system and method for storage and recovery of a private key in a cryptographic system by providing a parameterization of the private key that uses less storage space than the full... |
| 6950523 |
Secure storage of private keys |
| Sep-27-2005 |
To protect a private cryptographic key, two values are derived. The two values together can reconstruct the key. One value is sent to a server and deleted from the local machine. The other value is held... |
| 6941459 |
Selective data encryption using style sheet processing for decryption by a key recovery agent |
| Sep-6-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6934393 |
System and method for third party recovery of encryption certificates in a public key infrastructure |
| Aug-23-2005 |
A first enterprise official desires to recover an encryption certificate of a user. The user may be a current member of an enterprise or a former member of the enterprise. The first enterprise official... |
| 6931532 |
Selective data encryption using style sheet processing |
| Aug-16-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6931133 |
Method and system of securely escrowing private keys in a public key infrastructure |
| Aug-16-2005 |
A method of restricting access to private keys in a public key infrastructure provides for storage of an encrypted private key at a primary site. A masked session key is stored at a secondary site, where... |
| 6928551 |
Method and apparatus for selectively denying access to encoded data |
| Aug-9-2005 |
A method and system is provided for selectively denying access to encoded data. Encryption is used to protect secured data on any of a number of media devices in a system and in which unsecured data is... |
| 6920563 |
System and method to securely store information in a recoverable manner on an untrusted system |
| Jul-19-2005 |
A method (and system) for storing information in a recoverable manner on an untrusted system, includes sending, by a client, a request to a recovery server for recovery of a failed database, determining... |
| 6909786 |
Cryptographic trap door with timed lock and controlled escrow |
| Jun-21-2005 |
In a secure communication employing keys which require updating, all parties to the communication update their keys according to a clock at a suitable agreed-upon interval, and the keys are updated once... |
| 6907127 |
Hierarchical key management encoding and decoding |
| Jun-14-2005 |
The present invention discloses a construction for key management module functionality which provides for secure encoding and decoding of messages which are up to two blocks long. A method for generating... |
| 6901145 |
Generation of repeatable cryptographic key based on varying parameters |
| May-31-2005 |
A repeatable cryptographic key is generated based on varying parameters which represent physical measurements. Locations within a share table, which locations store valid and invalid cryptographic shares,... |
| 6895091 |
Systems and methods for encryption key archival and auditing in a quantum-cryptographic communications network |
| May-17-2005 |
A system archives encryption keys used for encrypting information in a network (105). The system includes a plurality of nodes configured to collect one or more encryption keys generated at each node and... |
| 6888944 |
Method for assigning encryption keys |
| May-3-2005 |
Sets of encryption keys useful by devices for decrypting encrypted content are defined using an error-correcting code such as a Reed-Solomon code to define vectors of length "n" over an alphabet of (0,... |
| 6877092 |
Apparatus, method, and computer program product for achieving interoperability between cryptographic key recovery enabled and unaware systems |
| Apr-5-2005 |
An apparatus, method, and computer program product for achieving interoperability between cryptographic key recovery enabled and unaware systems. The method includes the steps of encrypting data using... |
| 6874089 |
System, method and computer program product for guaranteeing electronic transactions |
| Mar-29-2005 |
A system, method and computer program product for guaranteeing a data transaction over a network are disclosed. When a data transaction between at least a server and a client is detected on a network,... |
| 6873706 |
Processing apparatus, program, or system of secret information |
| Mar-29-2005 |
To provide a secure cryptographic device such as an IC card which can endure TA (Timing Attack), DPA (Differential Power Analysis), SPA (Simple Power Analysis), or the like as an attaching method of presuming... |
| 6851049 |
Method and apparatus for facilitating secure anonymous email recipients |
| Feb-1-2005 |
One embodiment of the present invention provides a system that facilitates secure transmission of an email message to anonymous recipients without divulging the identities of the anonymous recipients.... |
| 6850620 |
Method for preventing key share attacks |
| Feb-1-2005 |
A key agreement protocol for preventing key-share attacks wherein a method is provided for establishing a common shared key between a pair of correspondents in a station-to-station protocol by exchanging... |
| 6845160 |
Apparatus and method for depositing encryption keys |
| Jan-18-2005 |
An encryption key depositing apparatus comprising a unit that generates an encryption key for a user; and a unit that starts a process in response to the generation of the encryption key, the process allowing... |
| 6842523 |
Encryption apparatus, cryptographic communication system, key recovery system, and storage medium |
| Jan-11-2005 |
In an encryption apparatus for encrypting a data body to contain an encrypted data body in transmission data and transmitting the transmission data to a receiver, the transmission data includes sender's... |
| 6839437 |
Method and apparatus for managing keys for cryptographic operations |
| Jan-4-2005 |
A cryptographic system for use in a data processing system. The system includes a security layer and a plurality of cryptographic routines, wherein the plurality of cryptographic routines are accessed... |
| 6829356 |
Server-assisted regeneration of a strong secret from a weak secret |
| Dec-7-2004 |
Methods for regenerating a strong secret for a user, based on input of a weak secret, such as a password, are assisted by communications exchanges with a set of independent servers. Each server holds a... |
| 6823070 |
Method for key escrow in a communication system and apparatus therefor |
| Nov-23-2004 |
Method of monitoring a secure encrypted communication, where the encryption key(s) is recovered by an escrow center having a master and multiple agents and the master receives the key encrypted using a... |
| 6810122 |
Secret sharing system and storage medium |
| Oct-26-2004 |
A secret sharing system and a storage medium where each of the n shareholders P1 to Pn holds a (n, n) share di (0.ltoreq.i.ltoreq.n), turns the share di into t(r+1) partial random numbers Sj of the (t,... |
| 6802000 |
System for authenticating access to online content referenced in hardcopy documents |
| Oct-5-2004 |
A system for controlling access to online content referenced in a hardcopy document. A user requesting access to online content available on a server responds to an authentication challenge from the server... |
| 6782103 |
Cryptographic key management |
| Aug-24-2004 |
Business data flows from one computer system (1) to another (2) and its integrity can be protected by cryptographic means, such as digital signatures. In particular, a source system (1) may use a private... |
| 6775773 |
Protectedly reading out an enciphered, cryptographic key |
| Aug-10-2004 |
Method and apparatuses for protectedly reading out an enciphered, cryptographic key (K.sub.sec) stored in a first memory (2) of a first communication apparatus (8; 8'), comprising the following steps:... |
| 6775382 |
Method and apparatus for recovering encryption session keys |
| Aug-10-2004 |
A method and apparatus allows a session key for a encrypted message to be recovered even if the recipient loses or forgets his private key. A session key encrypted using the public key of a party other... |
| 6754820 |
Multiple level access system |
| Jun-22-2004 |
A method of securing an object at an access level includes selecting a profile for a user, including a credential having an encrypted credential public key, an encrypted credential public key encryption... |
| 6754349 |
Cryptographic key, or other secret material, recovery |
| Jun-22-2004 |
Secret material, such as a cryptographic key, that is needed for operation of a computer system (4a), can be stored under password protection on a storage medium for insertion into the computer system... |
| 6751735 |
Apparatus for control of cryptography implementations in third party applications |
| Jun-15-2004 |
An apparatus and method provide a controlled, dynamically loaded, modular, cryptographic implementation for integration of flexible policy implementations on policy engines, and the like, into a base executable... |
| 6748084 |
Data access control system and method thereof |
| Jun-8-2004 |
A data access control system and a method thereof is disclosed. First, the master key is divided into n subkeys to be kept by n holders, by way of secret sharing. The master key reconstruction procedure... |
| 6738899 |
Method for publishing certification information certified by a plurality of authorities and apparatus and portable data storage media used to practice said method |
| May-18-2004 |
A method for certifying the public key of a user wishing to communicate using a public key encryption system by a plurality of certifying authorities. A plurality of certifying stations and a user station... |
| 6728378 |
Secret key messaging |
| Apr-27-2004 |
The invention provides computer-enabled methods and systems for the secure transmission and platform-independent receipt and decryption of encrypted messages. According to the invention messages are encrypted... |
| 6721424 |
Hostage system and method for intercepting encryted hostile data |
| Apr-13-2004 |
A method for intercepting data transmissions in a system which is comprised of an external network and computers within a protected local network. A proxy server located in the communication path, between... |
| 6704867 |
Method for publishing certification information representative of selectable subsets of rights and apparatus and portable data storage media used to practice said method |
| Mar-9-2004 |
A method for certification by a plurality of certifying authorities of the public key of a user wishing to communicate using a public key encryption system while asserting only a subset of rights. A plurality... |
| 6701433 |
Method and apparatus for escrowing properties used for accessing executable modules |
| Mar-2-2004 |
An apparatus and method provide a controlled, dynamically loaded, modular, cryptographic implementation for integration of flexible policy implementations on policy engines, and the like, into a base executable... |
| 6697947 |
Biometric based multi-party authentication |
| Feb-24-2004 |
Methods, systems and computer program products are provided which allow for multi-party authentication by receiving a plurality of biometric authentication messages from a corresponding plurality of users.... |
