lukas-heiligenbrunner
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38 lines
962 B
Plaintext
38 lines
962 B
Plaintext
#import "@preview/ichigo:0.1.0": config, prob
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#show: config.with(
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course-name: "SMART CARDS & NFC",
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serial-str: "k12104785",
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author-info: [
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Lukas Heiligenbrunner
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],
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author-names: "Lukas Heiligenbrunner",
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)
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#prob[
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#figure(
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image("Screenshot From 2024-10-21 14-07-41.png", width: 80%),
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caption: [
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Pin try counter.
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],
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)
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][
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- The PiN_TRY_COUNTER is prone to turn off attacks.
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Each time the chip resets the ram value of the counter is cleared and one gets basically infinite retries.
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todo solution
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- Depending on the implementation of the comparison operation, it might leak side-channel information.
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For example, if the comparison is done byte-wise, the attacker can determine the correct byte by comparing the time it takes to compare the bytes.
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]
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#prob[
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#figure(
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image("Screenshot From 2024-10-21 14-10-15.png", width: 80%),
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caption: [
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Pin comparision (PIN == REF_PIN).
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],
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)
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][
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todo solution
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]
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