1. An Efficient Software Protection Scheme
Antonio Maña
Ernesto Pimentel
Trusted Information: The New Decade Challenge, IFIP TC11 Sixteenth Annual Working Conference on Information Security (IFIP/Sec'01), June 11-13, 2001, Paris, France.
Xiaodong yang

2. Summary
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Goal: “make the attack to the scheme difficult enough to discourage dishonest users”
The scheme base on the hardware token (smart card)
How is it work & what’s the problems?
Interoperability, Capacity, Distribution, Delay

3. Easy to understand Completely explained Related works
Appreciation comment
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Easy to understand
Completely explained
Related works

4. Criticism comment
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I don’t like using license to authenticate the code in scheme two
Attacks: P6-Only one possible attack, but the author describe 2 attacks in the first scheme, 2 attacks in the second scheme.

5. Criticism comment con.
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Why is it an “efficient” software protection scheme?
Reference:
[LMP00] … use Spanish, [LMP00] will give us some important information about the balance between security and efficiency but …

6. Comparison
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7. Comparison
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8. Question
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Can we use other techniques (such as tamperproofing, watermarking) to authenticate the code rather than use license in the second scheme?

9. END
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