Summary Power LED Attack - Computerphile - YouTube (Youtube) youtu.be
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One Line
A paper discusses extracting secret keys from devices through LED flickering and introduces two variants of the concept of constant time in cryptographic operations, with the attack capturing images with a delay between rows.
Slides
Slide Presentation (10 slides)
Key Points
- Power analysis attacks can extract secret keys from smart cards and other devices by analyzing the flickering of LEDs on their power circuits.
- Side channel attacks, such as power analysis, have been common in the past.
- Implementations of cryptographic algorithms need to be carefully designed to prevent power analysis attacks.
- Power analysis attacks can exploit differences in power consumption during cryptographic operations to infer secret key bits.
- The intensity of LEDs can be used to gather information about the secret keys being used in cryptographic operations.
- The rolling shutter effect on a camera can be used to increase the frame rate and capture the slight changes in LED intensity.
- Power analysis attacks can be performed remotely over a camera on the internet, making them potentially less secure than physical attacks.
- Power analysis attacks have been demonstrated on algorithms such as RSA digital signatures and elliptic curve DSA.
Summaries
45 word summary
A paper on extracting secret keys from devices through LED flickering gained attention. The concept of constant time in cryptographic operations was discussed in a previous video. The paper introduces two variants of this concept. The attack captures images with a delay between rows, causing
137 word summary
A recent paper has gained attention on social media for its concept of extracting secret keys from smart cards and other devices by analyzing the flickering of LEDs on their power circuits. Side channel attacks like this, specifically power analysis, have been common in the past
In a previous video, the speaker discussed the use of the square always mod concept to ensure constant time in cryptographic operations. This eliminates the issue of varying power consumption based on the key bits. The paper being discussed introduces two variants of this concept, one
The camera used in this attack captures images by scanning down rows, resulting in a delay between rows. This delay causes the LED being filmed to appear slightly dimmer or brighter as the camera moves across the rows. By analyzing the changes in brightness, it
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Source: https://youtu.be/vXe8pe18MNk
Page title: Power LED Attack - Computerphile - YouTube
Meta description: Extracting a secret key by simply watching the flickering of an LED? Sounds implausible but that's what we're discussing with Dr Mike Pound!Author’s page on ...