From the Publisher:
A valuable reference for the novice as well as for the expert who needs a wider scope of coverage within the area of cryptography, this book provides easy and rapid access of information and includes more than 200 algorithms and protocols; more than 200 tables and figures; more than 1,000 numbered definitions, facts, examples, notes, and remarks; and over 1,250 significant references, including brief comments on each paper.

Handbook of Applied Cryptography

PROBLEM TO BE SOLVED: To solve the problem, wherein it is impossible for an electronic content information provider to provide commercially secure and effective method, for a configurable general-purpose electronic commercial transaction/distribution control system. SOLUTION: In this system, having at least one protected processing environment for safely controlling at least one portion of decoding of digital information, a secure content distribution method comprises a process for encapsulating digital information in one or more digital containers; a process for encrypting at least a portion of digital information; a process for associating at least partially secure control information for managing interactions with encrypted digital information and/or digital container; a process for delivering one or more digital containers to a digital information user; and a process for using a protected processing environment, for safely controlling at least a portion of the decoding of the digital information. COPYRIGHT: (C)2006,JPO&NCIPI

https://apps.dtic.mil/dtic/tr/fulltext/u2/a423264.pdf

Systems and Methods for Secure Transaction Management and Electronic Rights Protection

Key establishment in sensor networks is a challenging problem because asymmetric key cryptosystems are unsuitable for use in resource constrained sensor nodes, and also because the nodes could be physically compromised by an adversary. We present three new mechanisms for key establishment using the framework of pre-distributing a random set of keys to each node. First, in the q-composite keys scheme, we trade off the unlikeliness of a large-scale network attack in order to significantly strengthen random key predistribution's strength against smaller-scale attacks. Second, in the multipath-reinforcement scheme, we show how to strengthen the security between any two nodes by leveraging the security of other links. Finally, we present the random-pairwise keys scheme, which perfectly preserves the secrecy of the rest of the network when any node is captured, and also enables node-to-node authentication and quorum-based revocation.

/pdf/random-key-predistribution-schemes-for-sensor-networks-2w3j5ne7ef.pdf

Random key predistribution schemes for sensor networks

Wireless sensor networks will be widely deployed in the near future. While much research has focused on making these networks feasible and useful, security has received little attention. We present a suite of security protocols optimized for sensor networks: SPINS. SPINS has two secure building blocks: SNEP and μTESLA. SNEP includes: data confidentiality, two-party data authentication, and evidence of data freshness. μTESLA provides authenticated broadcast for severely resource-constrained environments. We implemented the above protocols, and show that they are practical even on minimal hardware: the performance of the protocol suite easily matches the data rate of our network. Additionally, we demonstrate that the suite can be used for building higher level protocols.

SPINS: security protocols for sensor networks

A method of maintaining digital medical records, comprising a step of receiving a medical transaction record (102), encrypted with a key in accordance with a patient-file association. Also comprising a step of accessing the encrypted medical transaction record according to a patient association with the record (111). And further comprising a step of re-encryption of the encrypted accessed medical transaction record with a key associated with an intended recipient of the medical record. The system and method according to the present invention presents a new business model for creation, maintenance, transmission, and use of medical records. The invention also allows financial burdens to be reallocated optimally and equitably, resulting in decreased overall societal cost and providing a successful business model for a database proprietor. Secure entrusted medical records are held in trust by an independent third party on behalf of the patient (113), and serve the medical community at large. Separately encrypted record elements may be aggregated as an information polymer.

Information record infrastructure, system and method

In an encrypted transmission system composed of one transmission apparatus 10 and twenty-eight reception apparatuses A1-G4 that are classified into seven groups A-G, two secret keys exclusively selected out of a total of fourteen secret keys are distributed beforehand to each group. The transmission apparatus 10 encrypts the same message M using one of the two secret keys distributed to each group and sends each group a message M encrypted with one of the group's secret keys. The reception apparatuses each decrypt the received cryptogram separately using each of the secret keys of group to which each reproduction apparatus belongs, judge whether either of the two decryption results conforms to a predetermined rule, and specify the correct decryption result.

Encrypted telecommunication system capable of suppressing damaged range while deciphering

The invention relates to a device which only users having a valid license are enabled to use. The device comprises a reading unit operable to read license information indicating a license to use the device, the license information being stored in a memory card; an inquiry unit operable to inquire of a management apparatus via a network whether the license indicated by the license information is valid or invalid; and a control unit operable to, in a case where a result of the inquiry shows that the license is invalid, perform control so as to inhibit the device from operating.

Device which only users having a valid license are enabled to use

PROBLEM TO BE SOLVED: To provide an encryption data delivery system, where data resulting from digitalizing contents which are works, such as movies are stored in a large-capacity medium such as a digital optical disk, particularly designated terminals among all terminals cannot acquire the original data but all other terminals can acquire the original data completely. SOLUTION: The encryption data delivery system is provided with two kinds of encryption sections: one uses tree structure division method and the other uses secret dispersion method. Those two methods are used, in such a way that when the number of the invalidated terminals is within the permissible range of the secret dispersion method, the secret dispersion method is selected; or when the number of the invalidated terminals exceeds the permissible range or a lot of invalidated terminals take place, the tree structure division method is used.

Encryption data deliverying system

A data converter ( 1 ) capable of reducing a size of the total implementation in a device is a processing apparatus that performs secret converting processing predetermined to input data with 64 bits, the data converter including a finite field polynomial cubing unit ( 10 ), data integrating units ( 11 a) to ( 11 d), ( 12 ) and ( 13 ), a first converter ( 14 ), a second converter ( 15 ), a data splitting unit ( 16 ), and a data integrating unit ( 17 ). The finite field polynomial cubing unit ( 10 ) performs cubing, on the 32 bits data, in the polynomial residue class ring with a value in the finite field GF (2 8 ) as a coefficient and respectively outputs data with 32 bits.

Data converter for performing exponentiation in polynomial residue class ring with value in finite field as coefficient

Data jamming apparatus

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