Java + information flow Java + information flow is a security-typed programming language that extends Java with support for information flow control.
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Java programming language access control flow flow control Jif

Java + information flow Description

Java + information flow is a security-typed programming language that extends Java with support for information flow control. Java + information flow (Jif in short) is a security-typed programming language that extends Java with support for information flow control and access control, both at compile time and at run time.The source code for the Jif compiler and run-time system is now available for download. Jif is written in Java and is built using the Polyglot extensible Java compiler framework.Static information flow control can protect the confidentiality and integrity of information manipulated by computing systems. The compiler tracks the correspondence between information the policies that restrict its use, enforcing security properties end-to-end within the system. After checking information flow within Jif programs, the Jif compiler translates them to Java programs and uses an ordinary Java compiler to produce secure executable programs.Jif extends Java by adding labels that express restrictions on how information may be used. For example, the following variable declaration declares not only that the variable x is an int, but also that the information in x is governed by a security policy: int {Alice→Bob} x;In this case, the security policy says that the information in x is controlled by the principal Alice, and that Alice permits this information to be seen by the principal Bob. The policy {Alice←Bob} means that information is owned by Alice, and that Alice permits it to be affected by Bob. Based on label annotations like these, the Jif compiler analyzes information flows within programs, to determines whether they enforce the confidentiality and integrity of information.

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