By Mourad Debbabi, Mohamed Saleh, Chamseddine Talhi, Sami Zhioua
This publication is a finished presentation of embedded Java safety. it's in comparison with the safety version of the Java 2 regular variation so that it will view the impression of restricted assets on protection. No different booklet particularly addresses the subject of embedded Java safety. moreover, the e-book offers tricks and proposals as methods for hardening safeguard, and provides researchers and practitioners alike a broader and deeper realizing of the problems all for embedded Java safeguard, and – as a bigger view - cellular units safeguard. the writer is a well known authority and professional in cellular computing and embedded units.
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Additional resources for Embedded Java Security: Security for Mobile Devices
To ensure memory integrity, Java enforces the following security rules: – The access levels deﬁned by a programmer must always be respected. 1 Java Security 85 – Memory locations are protected from unauthorized accesses via pointers of incorrect type (there is no notion of pointer in Java). – Elements that are deﬁned ﬁnal can never be changed. – Any variable must be initialized before any use during the execution. – Before accessing an array element, the array bounds must be checked. – Arbitrary casting between objects is not allowed.
The naming of the permissions follows the same convention adopted for Java package names. The permissions concerning one API must start with the name of that API package. If the permission concerns a class or a function in the package, then the name of the permission must start with the package name followed by the class name. Any Java ME-CLDC implementation must have an implementation-dependent representation of the total set of permissions that refer to the protected APIs and functions. This set is the union of all permissions deﬁned by every protected function or API on the device .
For each given method, the veriﬁer allocates suﬃcient memory for storing the types of the method local variables and operand stack items. 2. For each method, the veriﬁer initializes the types of the method pointer (this), the method arguments, and the empty method operand stack. 3. The veriﬁer performs bytecode veriﬁcation by linearly iterating through each method instructions. 4. The veriﬁer checks whether the last method instruction is an unconditional jump, return, athrow, tableswitch, or lookupswitch.