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3,005
How to leak a secret
- PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON THE THEORY AND APPLICATION OF CRYPTOLOGY AND INFORMATION SECURITY: ADVANCES IN CRYPTOLOGY
, 2001
"... In this paper we formalize the notion of a ring signature, which makes it possible to specify a set of possible signers without revealing which member actually produced the signature. Unlike group signatures, ring signatures have no group managers, no setup procedures, no revocation procedures, and ..."
Abstract
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Cited by 2580 (4 self)
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In this paper we formalize the notion of a ring signature, which makes it possible to specify a set of possible signers without revealing which member actually produced the signature. Unlike group signatures, ring signatures have no group managers, no setup procedures, no revocation procedures
The Ponder Policy Specification Language
- LECTURE NOTES IN COMPUTER SCIENCE
, 2001
"... The Ponder language provides a common means of specifying security policies that map onto various access control implementation mechanisms for firewalls, operating systems, databases and Java. It supports obligation policies that are event triggered conditionaction rules for policy based management ..."
Abstract
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Cited by 499 (28 self)
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of networks and distributed systems. Ponder can also be used for security management activities such as registration of users or logging and auditing events for dealing with access to critical resources or security violations. Key concepts of the language include roles to group policies relating to a position
Efficient Group Signature Schemes for Large Groups (Extended Abstract)
, 1997
"... A group signature scheme allows members of a group to sign messages on the group's behalf such that the resulting signature does not reveal their identity. Only a designated group manager is able to identify the group member who issued a given signature. Previously proposed realizations of grou ..."
Abstract
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Cited by 314 (35 self)
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be used for large groups. Furthermore, the scheme allows the group manager to add new members to the group without modifying the public key. The realization is ba...
From Structured Documents to Novel Query Facilities
, 1994
"... Structured documents (e.g., SGML) can benefit a lot from database support and more specifically from object-oriented database (OODB) management systems. This paper describes a natural mapping from SGML documents into OODB's and a formal extension of two OODB query languages (one SQL-like and th ..."
Abstract
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Cited by 231 (32 self)
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-like and the other calculus) in order to deal with SGML document retrieval. Although motivated by structured documents, the extensions of query languages that we present are general and useful for a variety of other OODB applications. A key element is the introduction of paths as first class citizens. The new
Stress, coping and social support processes: Where are we? What next?
- Journal of Health and Social Behavior,
, 1995
"... JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about J ..."
Abstract
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Cited by 259 (1 self)
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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about
Database Description with SDM: A Semantic Database Model
- ACM Transactions on Database Systems
, 1981
"... SDM is a high-level semantics-based database description and structuring formalism (database model) for databases. This database model is designed to capture more of the meaning of an application environment than is possible with contemporary database models. An SDM specification describes a databas ..."
Abstract
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Cited by 216 (4 self)
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user interface facilities, it can serve as a conceptual database model in the database design process; and, it can be used as the database model for a new kind of database management system.
Change Detection in Hierarchically Structured Information
- In Proceedings of the 1996 ACM SIGMOD International Conference on Management of Data
, 1996
"... {chaw,anand,hector, widom}%s.stanford. edu Detecting and representing changes to data is important for active databases, data warehousing, view maintenance, and version and configuration management. Most previous work in change management has dealt with flat-file and relational data; we focus on hie ..."
Abstract
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Cited by 183 (11 self)
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on hierarchically structured data. Since in many cases changes must be computed from old and new versions of the data, we define the hierarchical change detection problem as the problem of finding a “minimum-cost edit script ” that transforms one data tree to another, and we present efficient algorithms
Key management for restricted multicast using broadcast encryption
- IEEE/ACM TRANSACTIONS ON NETWORKING
, 2000
"... The problem we address is how to communicate securely with a set of users (the target set) over an insecure broadcast channel. This problem occurs in two application domains: satellite/cable pay TV and the Internet MBone. In these systems, the parameters of major concern are the number of key trans ..."
Abstract
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Cited by 29 (4 self)
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transmissions and the number of keys held by each receiver. In the Internet domain, previous schemes suggest building a separate key tree for each multicast program, thus incurring a setup cost of at least �� � per program for target sets of size. In the pay-TV domain, a single key structure is used for all
Inheritance of Workflows - An approach to tackling problems related to change
"... Inheritance is one of the key issues of object-orientation. The inheritance mechanism allows for the definition of a subclass which inherits the features of a specific superclass. When adapting a workflow process definition to specific needs (ad-hoc change) or changing the structure of the workfl ..."
Abstract
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Cited by 188 (25 self)
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of the workflow process as a result of reengineering efforts (evolutionary change), inheritance concepts are useful to check whether the new workflow process inherits some desirable properties of the old workflow process. Today's workflow management systems have problems dealing with both ad-hoc changes
What’s Hot and What’s Not: Tracking Most Frequent Items Dynamically, in
- Proc. of ACM PODS
, 2003
"... ABSTRACT Most database management systems maintain statistics on the underlying relation. One of the important statistics is that of the "hot items" in the relation: those that appear many times (most frequently, or more than some threshold). For example, end-biased histograms keep the ho ..."
Abstract
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Cited by 199 (13 self)
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the hot items as part of the histogram and are used in selectivity estimation. Hot items are used as simple outliers in data mining, and in anomaly detection in networking applications. We present a new algorithm for dynamically determining the hot items at any time in the relation that is undergoing
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