The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Anil K. Sarje - One of the best experts on this subject based on the ideXlab platform.
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Concurrency Control for Multilevel Secure Databases
International Journal of Network Security, 2009Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:A multilevel secure (MLS) database is intended to protect classifled information from unauthorized users based on the classiflcation of the data and the clearances of the users. The Concurrency Control requirements for transaction processing in multilevel secure database management systems (MLS/DBMSs) are difierent from those in conventional transaction processing systems. In MLS/DBMSs, coordination of transactions at difierent security levels is needed to avoid both covert channels and the starvation of high security level transactions. In this paper we outline the transaction processing requirements in MLS/DBMSs, and survey the mechanisms proposed to address these requirements and propose a new secure multiversion Concurrency Control protocol. We also investigate the relative performance of existing secure Concurrency Control protocols while varying workloads.
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ICDIM - A Secure Concurrency Control for MLS/DDBSs
2006 1st International Conference on Digital Information Management, 2007Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:Multilevel security requirements introduce a new dimension to traditional database Concurrency Control protocol as they cause covert channels. To prevent covert channels, Concurrency Control protocol for multilevel secure database should ensure that transactions at low security level are never delayed by high security level transactions in the event of a data conflict. This may subjected to an indefinite delay if it is forced to abort repeatedly to high security level transactions and making the secure Concurrency Control protocol unfair towards high security level transactions (Kaur et al., 2005). This paper proposes secure multiversion database Concurrency Control protocol that is free from covert channels without starving the high security level transactions that may often occur in pervious works.
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Fairness strategy for multilevel secure Concurrency Control protocol
Lecture Notes in Computer Science, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
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ICISS - Fairness strategy for multilevel secure Concurrency Control protocol
Information Systems Security, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
Navdeep Kaur - One of the best experts on this subject based on the ideXlab platform.
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Concurrency Control for Multilevel Secure Databases
International Journal of Network Security, 2009Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:A multilevel secure (MLS) database is intended to protect classifled information from unauthorized users based on the classiflcation of the data and the clearances of the users. The Concurrency Control requirements for transaction processing in multilevel secure database management systems (MLS/DBMSs) are difierent from those in conventional transaction processing systems. In MLS/DBMSs, coordination of transactions at difierent security levels is needed to avoid both covert channels and the starvation of high security level transactions. In this paper we outline the transaction processing requirements in MLS/DBMSs, and survey the mechanisms proposed to address these requirements and propose a new secure multiversion Concurrency Control protocol. We also investigate the relative performance of existing secure Concurrency Control protocols while varying workloads.
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ICDIM - A Secure Concurrency Control for MLS/DDBSs
2006 1st International Conference on Digital Information Management, 2007Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:Multilevel security requirements introduce a new dimension to traditional database Concurrency Control protocol as they cause covert channels. To prevent covert channels, Concurrency Control protocol for multilevel secure database should ensure that transactions at low security level are never delayed by high security level transactions in the event of a data conflict. This may subjected to an indefinite delay if it is forced to abort repeatedly to high security level transactions and making the secure Concurrency Control protocol unfair towards high security level transactions (Kaur et al., 2005). This paper proposes secure multiversion database Concurrency Control protocol that is free from covert channels without starving the high security level transactions that may often occur in pervious works.
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Fairness strategy for multilevel secure Concurrency Control protocol
Lecture Notes in Computer Science, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
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ICISS - Fairness strategy for multilevel secure Concurrency Control protocol
Information Systems Security, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
Myoung Ho Kim - One of the best experts on this subject based on the ideXlab platform.
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Starvation-free secure multiversion Concurrency Control
Information Processing Letters, 1998Co-Authors: Heung-taek Kim, Myoung Ho KimAbstract:Concurrency Control is important for multilevel secure databases because a covert channel can be easily created through collaboration of multilevel transactions in most traditional Concurrency Control mechanisms. We, in this paper, propose a secure multiversion Concurrency Control mechanism. We present concepts of an invisible area and a t-lock to prevent retrieval anomaly and starvation of high transactions that may often occur in the previous works on secure Concurrency Control. Our proposed method prevents the creation of covert channel without retrieval anomaly and starvation of high transactions while providing serializable schedules for multilevel transactions.
Rajwinder Singh - One of the best experts on this subject based on the ideXlab platform.
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Concurrency Control for Multilevel Secure Databases
International Journal of Network Security, 2009Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:A multilevel secure (MLS) database is intended to protect classifled information from unauthorized users based on the classiflcation of the data and the clearances of the users. The Concurrency Control requirements for transaction processing in multilevel secure database management systems (MLS/DBMSs) are difierent from those in conventional transaction processing systems. In MLS/DBMSs, coordination of transactions at difierent security levels is needed to avoid both covert channels and the starvation of high security level transactions. In this paper we outline the transaction processing requirements in MLS/DBMSs, and survey the mechanisms proposed to address these requirements and propose a new secure multiversion Concurrency Control protocol. We also investigate the relative performance of existing secure Concurrency Control protocols while varying workloads.
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ICDIM - A Secure Concurrency Control for MLS/DDBSs
2006 1st International Conference on Digital Information Management, 2007Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:Multilevel security requirements introduce a new dimension to traditional database Concurrency Control protocol as they cause covert channels. To prevent covert channels, Concurrency Control protocol for multilevel secure database should ensure that transactions at low security level are never delayed by high security level transactions in the event of a data conflict. This may subjected to an indefinite delay if it is forced to abort repeatedly to high security level transactions and making the secure Concurrency Control protocol unfair towards high security level transactions (Kaur et al., 2005). This paper proposes secure multiversion database Concurrency Control protocol that is free from covert channels without starving the high security level transactions that may often occur in pervious works.
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Fairness strategy for multilevel secure Concurrency Control protocol
Lecture Notes in Computer Science, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
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ICISS - Fairness strategy for multilevel secure Concurrency Control protocol
Information Systems Security, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
Manoj Misra - One of the best experts on this subject based on the ideXlab platform.
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Concurrency Control for Multilevel Secure Databases
International Journal of Network Security, 2009Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:A multilevel secure (MLS) database is intended to protect classifled information from unauthorized users based on the classiflcation of the data and the clearances of the users. The Concurrency Control requirements for transaction processing in multilevel secure database management systems (MLS/DBMSs) are difierent from those in conventional transaction processing systems. In MLS/DBMSs, coordination of transactions at difierent security levels is needed to avoid both covert channels and the starvation of high security level transactions. In this paper we outline the transaction processing requirements in MLS/DBMSs, and survey the mechanisms proposed to address these requirements and propose a new secure multiversion Concurrency Control protocol. We also investigate the relative performance of existing secure Concurrency Control protocols while varying workloads.
-
ICDIM - A Secure Concurrency Control for MLS/DDBSs
2006 1st International Conference on Digital Information Management, 2007Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:Multilevel security requirements introduce a new dimension to traditional database Concurrency Control protocol as they cause covert channels. To prevent covert channels, Concurrency Control protocol for multilevel secure database should ensure that transactions at low security level are never delayed by high security level transactions in the event of a data conflict. This may subjected to an indefinite delay if it is forced to abort repeatedly to high security level transactions and making the secure Concurrency Control protocol unfair towards high security level transactions (Kaur et al., 2005). This paper proposes secure multiversion database Concurrency Control protocol that is free from covert channels without starving the high security level transactions that may often occur in pervious works.
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Fairness strategy for multilevel secure Concurrency Control protocol
Lecture Notes in Computer Science, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.
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ICISS - Fairness strategy for multilevel secure Concurrency Control protocol
Information Systems Security, 2006Co-Authors: Navdeep Kaur, Rajwinder Singh, Manoj Misra, Anil K. SarjeAbstract:The conventional Concurrency Control protocols cannot be directly used in the multilevel secure database management systems (MLS/DBMS), because they may be exploited to establish covert channels. The stringent non-interference requirements imposed by multilevel security dictate modification of the conventional Concurrency Control. A number of multilevel secure Concurrency Control protocols have been proposed in the literature, which address the problem of covert channels. To prevent covert channels, most of these Concurrency Control protocols give high priority to the operations of low security level transaction when it conflicts with the operations of a high security level transaction. This may lead to the abortion or re-execution of high security level transactions over and over again and making the Concurrency Control protocols unfair towards high security level transactions. Motivated by fairness concerns, we present a fairness strategy for multilevel secure Concurrency Control protocol to achieve fair performance across different security levels while guaranteeing Orange security. Our simulation results show that fairness strategy can achieve a significant performance improvement, in terms of fairness.