Combatting Software Piracy by Encryption and Key Management

Albert,; Morse,

doi:10.1109/mc.1984.1659112

Cited by 20 publications

(9 citation statements)

References 2 publications

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“…are similar in the three methods. Those motives are discussed in depth in [2]. We will not repeat these arguments.…”

Section: Pps Versus Am and Spsmentioning

confidence: 97%

“…The protected routines of the software would be run on the PPS coprocessor. In recent papers [2,13,141, two other software protection methods (henceforth referred to as AM and SPS) were presented. These methods require similar modifications to the internals of the processor.…”

Section: Pps Requires Modificationsmentioning

confidence: 99%

“…However, this help is only remote (by communication), and does not require physical interaction with 2, as in [2]. The protection will not fail, even if the communication is tapped or altered.…”

Section: The Replacement Protocol (Pps/pk)mentioning

confidence: 99%

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Public protection of software

Herzberg

Pinter

1987

ACM Trans. Comput. Syst.

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One of the overwhelming problems that software producers must contend with is the unauthorized use and distribution of their products. Copyright laws concerning software are rarely enforced, thereby causing major losses to the software companies. Technical means of protecting software from illegal duplication are required, but the available means are imperfect. We present protocols that enable software protection, without causing substantial overhead in distribution and maintenance. The protocols may be implemented by a conventional cryptosystem, such as the DES, or by a public key cryptosystem, such as the RSA. Both implementations are proved to satisfy required security criteria.

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“…are similar in the three methods. Those motives are discussed in depth in [2]. We will not repeat these arguments.…”

Section: Pps Versus Am and Spsmentioning

confidence: 97%

Section: Pps Requires Modificationsmentioning

confidence: 99%

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Public protection of software

Herzberg

Pinter

1987

ACM Trans. Comput. Syst.

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“…And finally, FE provides integrity, unlike Albert & Morse's scheme [2] (see also [13] and [17]). This area is shown in the form of a binary tree in Figure 10, each node of which is numbered for ease of reference.…”

Section: Related Workmentioning

confidence: 99%

“…2 That is, FE provides program integrity, even while the program is in execution. (As we will show below, FE schemes are a function of trusted volume size.…”

Section: Introductionmentioning

confidence: 99%

Principles of Faithful Execution in the implementation of trusted objects.

Tarman¹,

Campbell²,

Pierson³

2003

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Faithful Execution (FE) is a type of software protection that begins when the software leaves the control of the developer and ends within the trusted volume of a target processor. That is, FE provides program integrity, even while the program is in execution. This report amplifies that definition of FE by describing several simple designs. The implementation of one of those designs is described in a companion report, "Prototyping Faithful Execution in a Java Virtual Machine" SAND 2003-2327

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An Attack on SMC-Based Software Protection

Zhi-gang

Chui

2006

Information and Communications Security

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Self-modifying codes (SMC) refer to programs that intentionally modify themselves at runtime, causing the runtime code to differ from the static binary representation of the code before execution. Hence SMC is an effective method to obstruct software disassembling. This paper presents a method which circumvents the SMC protection, thus improving the performance of disassembling. By disabling the write privilege to the code section, an access violation exception occurs when an SMC attempts to execute. Intercepting this exception allows the attacker to determine and thus compromise the SMC and generate equivalent static code. Our experiments demonstrate that it is viable and efficient.

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Combatting Software Piracy by Encryption and Key Management

Cited by 20 publications

References 2 publications

Public protection of software

Public protection of software

Principles of Faithful Execution in the implementation of trusted objects.

An Attack on SMC-Based Software Protection

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