In what’s an ingenious side-channel attack, a group of academics has found that it’s possible to recover secret keys from a device by analyzing video footage of its power LED.
“Cryptographic computations performed by the CPU change the power consumption of the device which affects the brightness of the device’s power LED,” researchers from the Ben-Gurion University of the Negev and Cornell University said in a study.
By taking advantage of this observation, it’s possible for threat actors to leverage video camera devices such as an iPhone 13 or an internet-connected surveillance camera to extract the cryptographic keys from a smart card reader.
Specifically, video-based cryptanalysis is accomplished by obtaining video footage of rapid changes in an LED’s brightness and exploiting the video camera’s rolling shutter effect to capture the physical emanations.
“This is caused by the fact that the power LED is connected directly to the power line of the electrical circuit which lacks effective means (e.g., filters, voltage stabilizers) of decoupling the correlation with the power consumption,” the researchers said.
In a simulated test, it was found that the method allowed for the recovery of a 256-bit ECDSA key from a smart card by analyzing video footage of the power LED flickers via a hijacked Internet-connected security camera.
A second experiment allowed for the extraction of a 378-bit SIKE key from a Samsung Galaxy S8 handset by training the camera of an iPhone 13 on the power LED of Logitech Z120 speakers connected to a USB hub that’s also used to charge the phone.
What makes the attack notable is that the modus operandi is non-intrusive, either banking on physical proximity or over the internet, to steal the cryptographic keys.
That said, there are a few limitations to reliably pull off the scheme. It requires the camera to be placed 16 meters away from the smart card reader and in a manner such that it has a direct line of sight view of the power LED. Then there’s the condition that the signatures are recorded for a duration of 65 minutes.
It also presupposes that there exists a side-channel based on power consumption that leaks sensitive information which could be used for cryptanalysis, making such attacks an exception rather than a norm.
To counter such attacks, it’s recommended that LED manufacturers integrate a capacitor to reduce fluctuations in power consumption or, alternatively, by covering the power LED with black tape to prevent leakage.
Ben Nassi, the lead researcher behind the attack technique, has previously devised similar approaches in the past – Lamphone and Glowworm – that employ overhead hanging bulbs and a device’s power indicator LED to eavesdrop on conversations.
Then last year, the researchers demonstrated what’s called the “little seal bug” attack that utilizes an optical side-channel associated with lightweight reflective objects to recover the content of a conversation.
Thank you for the good writeup. It in fact was a amusement account it.
[url=https://tadalafilvm.online/]cialis from india to usa[/url]
[url=http://budesonide.trade/]budesonide discount[/url]
[url=http://isotretinoin.skin/]accutane online prescription[/url]
[url=http://vardenafil.skin/]levitra.com[/url]
[url=https://budesonide.trade/]budesonide 64 mcg[/url]
[url=https://tamoxifen.pics/]how to get nolvadex prescription[/url]
[url=http://celecoxib.charity/]celebrex drug price[/url]
[url=https://seroquela.gives/]seroquel for adhd[/url]
[url=http://levofloxacin.party/]levaquin generic[/url]
[url=https://disulfiram.party/]buy antabuse online without prescription[/url]
[url=http://budesonide.trade/]budecort 400[/url]
[url=http://celecoxib.charity/]celebrex generic over the counter[/url]
[url=http://clomidfrt.online/]clomid cost nz[/url]
[url=http://budesonide.trade/]budesonide generic cost[/url]
[url=http://furosemidem.online/]furosemide 250 mg tablet[/url]
[url=https://malegra.science/]buy malegra fxt[/url]
[url=https://augmentin.media/]cost of amoxil[/url]
[url=http://sildalisa.gives/]sildalis[/url]
[url=http://celecoxib.charity/]buy celebrex generic[/url]
[url=http://sildalisa.gives/]sildalis 120[/url]
[url=https://happyfamilypharmacy24.online/]online pharmacy 365[/url]
[url=https://femaleviagra.science/]viagra best buy[/url]
[url=http://piroxicam.foundation/]feldene 20 mg capsule[/url]
[url=https://augmentin.media/]amoxicillin 875[/url]
[url=http://clomidfrt.online/]best otc clomid[/url]
[url=https://piroxicam.foundation/]piroxicam[/url]
[url=http://vardenafil.skin/]levitra 10[/url]
[url=https://elimite.science/]generic elimite cream[/url]
[url=https://femaleviagra.science/]sildenafil 85[/url]
[url=https://anafranil.charity/]anafranil for ocd[/url]
[url=https://happyfamilypharmacy24.online/]trust pharmacy[/url]
[url=https://tamoxifen.pics/]no prescription tamoxifen online[/url]
[url=http://malegra.science/]malegra 180 on line[/url]
[url=http://elimite.science/]where can i buy elimite cream over the counter[/url]
[url=http://clomida.foundation/]order clomid pills online[/url]
[url=http://augmentin.media/]augmentin 625 mg otc[/url]
[url=http://budesonide.trade/]budecort usa[/url]
[url=https://plavix.charity/]plavix coupon[/url]
[url=http://malegra.science/]malegra india[/url]
[url=http://happyfamilypharmacy24.online/]canadian pharmacy online store[/url]
[url=http://elimite.science/]generic elimite cream[/url]
[url=https://zestoretica.online/]zestoretic 20 mg[/url]
[url=https://celecoxib.charity/]celebrex tablets 100mg[/url]
[url=http://clomidfrt.online/]clomid pills where to buy[/url]
[url=http://disulfiram.party/]canadian pharmacy antabuse[/url]
[url=https://augmentin.media/]augmentin price south africa[/url]
[url=http://elimite.science/]elimite over the counter[/url]
[url=http://clomida.foundation/]buy clomid online india[/url]
[url=http://tadalafilvm.online/]buy cialis online safely[/url]
[url=http://clomida.foundation/]where can you get clomid[/url]
[url=https://vardenafil.skin/]levetra[/url]
[url=http://happyfamilypharmacy24.online/]australia online pharmacy free shipping[/url]
[url=http://happyfamilypharmacy24.online/]canada pharmacy not requiring prescription[/url]
[url=https://isotretinoin.skin/]order accutane from canada[/url]
[url=https://furosemide.party/]lasix 80[/url]
[url=https://femaleviagra.science/]cheap brand viagra[/url]
[url=http://clomida.foundation/]clomid order online uk[/url]
[url=http://aurogra.gives/]aurogra tablets[/url]
[url=https://disulfiram.party/]otc antabuse[/url]
[url=http://vardenafil.skin/]buy generic vardenafil[/url]
[url=https://femaleviagra.science/]via gra[/url]
[url=https://cleocin.charity/]cleocin t pledgets[/url]
[url=https://budesonide.trade/]budesonide 100 mcg[/url]
[url=http://clomida.foundation/]cost of clomid uk[/url]
[url=http://augmentin.solutions/]amoxicillin 150 mg[/url]
[url=http://augmentin.media/]augmentin 875 generic[/url]
[url=https://happyfamilystorerx.org/]online pharmacy australia paypal[/url]
[url=https://happyfamilypharmacy24.online/]best online pharmacy india[/url]
[url=https://budesonide.trade/]budecort 400[/url]
[url=https://isotretinoin.skin/]accutane 40 mg price in india[/url]
[url=https://femaleviagra.science/]viagra generic online india[/url]
[url=http://malegra.science/]malegra canada[/url]
[url=http://celecoxib.charity/]can you buy celebrex over the counter[/url]
[url=https://isotretinoin.skin/]canadian pharmacy accutane[/url]
[url=https://celecoxib.charity/]celebrex over the counter canada[/url]
[url=http://synthroidpill.online/]synthroid cheap price[/url]
[url=https://isotretinoin.skin/]accutane 20mg[/url]
[url=http://happyfamilypharmacy24.online/]canadian 24 hour pharmacy[/url]
[url=https://budesonide.trade/]budesonide discount[/url]
[url=http://zestoretica.online/]zestoretic 20 12.5[/url]
[url=http://clomida.foundation/]clomid canada buy[/url]
[url=https://vardenafil.skin/]levitra prices canada[/url]
[url=http://femaleviagra.science/]generic viagra cheap canada[/url]
[url=https://avodartdutasteride.foundation/]avodart for sale[/url]
[url=http://vardenafil.skin/]levitra 5mg price[/url]
[url=https://cleocin.charity/]how much is clindamycin[/url]
[url=http://malegra.science/]malegra dxt tablets[/url]
[url=https://isotretinoin.skin/]accutane buy online[/url]
[url=https://piroxicam.foundation/]feldene for sale[/url]
[url=http://sildalisa.gives/]generic sildalis[/url]
[url=http://vardenafil.skin/]vardenafil cheap[/url]
[url=https://happyfamilypharmacy24.online/]pharmacy com canada[/url]
[url=https://budesonide.trade/]budesonide 180[/url]
[url=http://clopidogrel.lol/]how much is generic plavix[/url]
[url=http://elimite.science/]buy elimite cream[/url]
[url=http://sildalisa.gives/]sildalis 120 mg[/url]
[url=http://augmentin.solutions/]medication augmentin 875[/url]
[url=https://femaleviagra.science/]where can i get generic viagra[/url]
[url=https://cleocin.charity/]can you buy clindamycin over the counter[/url]
[url=https://disulfiram.party/]antabuse pill[/url]
[url=http://celecoxib.charity/]celebrex 400 mg[/url]
[url=http://augmentin.media/]ampicillin amoxicillin[/url]
[url=https://budesonide.trade/]budesonide 3mg capsules[/url]
[url=https://cleocin.charity/]clindamycin 150mg capsules[/url]
[url=http://malegra.science/]buy malegra 50 mg[/url]
[url=http://sildalisa.gives/]sildalis canada[/url]
[url=http://disulfiram.party/]antabuse buy canada[/url]
[url=https://zestoretica.online/]zestoretic 30 25mg[/url]
[url=https://furosemide.party/]furosemide 40mg price[/url]
[url=https://clomidfrt.online/]clomid pharmacy uk[/url]
[url=https://happyfamilypharmacy24.online/]canada pharmacy world[/url]
[url=https://isotretinoin.skin/]roche accutane[/url]
[url=https://piroxicam.foundation/]feldene capsule 20 mg[/url]
[url=http://augmentin.solutions/]amoxicillin free shipping[/url]
[url=http://vardenafil.skin/]vardenafil best online pharmacy[/url]
[url=https://zestoretica.online/]zestoretic 20 mg[/url]
[url=http://tamoxifen.pics/]usa price for tamoxifen[/url]
[url=https://elimite.science/]elimite cream over the counter[/url]
[url=https://tamoxifen.pics/]nolvadex 20mg online[/url]
[url=http://mebendazole.charity/]where can i get vermox over the counter[/url]
[url=http://zestoretica.online/]zestoretic 20 12.5 mg[/url]
[url=https://tadalafilvm.online/]tadalafil 40 mg for sale[/url]
[url=https://disulfiram.party/]disulfiram uk buy[/url]
[url=http://augmentin.media/]augmentin 62.5 mg[/url]
[url=https://malegra.science/]generic malegra dxt[/url]
[url=https://disulfiram.party/]buy antabuse pills[/url]
[url=https://piroxicam.foundation/]piroxicam uk[/url]
[url=http://tadalafilvm.online/]best generic cialis brand[/url]
[url=http://clopidogrel.lol/]plavix coupon[/url]
[url=http://happyfamilypharmacy24.online/]canadianpharmacymeds com[/url]
[url=https://happyfamilypharmacy24.online/]generic pharmacy online[/url]
[url=https://lisinopril.skin/]zestril medicine[/url]
[url=https://augmentin.media/]amoxicillin for sale mexico[/url]
[url=http://furosemide.party/]lasix 80[/url]
[url=http://malegra.science/]malegra pills[/url]
[url=http://tadalafilvm.online/]where can i buy over the counter tadalafil 20mg[/url]
[url=http://isotretinoin.skin/]accutane prices uk[/url]
[url=https://furosemide.party/]lasix 250 mg tablet[/url]
[url=https://happyfamilypharmacy24.online/]legit non prescription pharmacies[/url]
[url=http://augmentin.solutions/]how to get amoxicillin over the counter[/url]
[url=http://celecoxib.charity/]cheapest generic celebrex[/url]
[url=https://celecoxib.charity/]buy celebrex online canada[/url]
[url=http://budesonide.trade/]budesonide 500 mcg[/url]
[url=https://zestoretica.online/]buy zestoretic[/url]
[url=http://tamoxifen.pics/]nolvadex rx[/url]
[url=http://cleocin.charity/]generic for cleocin[/url]
[url=http://sildalisa.gives/]discount sildalis 120mg[/url]
[url=http://clomidfrt.online/]clomid 500mg[/url]
[url=https://elimite.science/]elimite cream over the counter[/url]
[url=http://elimite.foundation/]cheap elimite[/url]
[url=https://isotretinoin.skin/]accutane online pharmacy uk[/url]
[url=http://elimite.science/]elimite cream otc[/url]
[url=https://piroxicam.foundation/]piroxicam[/url]
[url=http://synthroidpill.online/]purchase synthroid[/url]
[url=http://budesonide.trade/]budesonide for sale[/url]
[url=https://femaleviagra.science/]generic viagra usa pharmacy[/url]
[url=http://augmentin.solutions/]buy cheap augmentin[/url]
[url=http://budesonide.trade/]budesonide tablet brand name[/url]
[url=https://sildalisa.gives/]sildalis 120[/url]
[url=http://furosemide.party/]cheap generic lasix[/url]
[url=http://malegra.science/]malegra 150 india[/url]
[url=http://trental.gives/]trental 400 order online india[/url]
[url=http://vardenafil.skin/]10 mg levitra cost[/url]
[url=http://augmentin.media/]augmentin from canada[/url]
[url=http://aurogra.gives/]aurogra 100mg tablets[/url]
[url=https://furosemide.party/]how to get furosemide[/url]
[url=https://sildalisa.gives/]sildalis online[/url]
[url=http://elimite.science/]elimite cream[/url]
[url=https://clopidogrel.lol/]plavix 5 mg tablet[/url]
[url=https://elimite.science/]elimite cost[/url]
[url=https://augmentin.solutions/]augmentin 875mg price[/url]
[url=http://celecoxib.charity/]best price for celebrex[/url]
[url=https://clomida.foundation/]order clomid canada[/url]
[url=http://tamoxifen.pics/]nolvadex 10 mg tablet[/url]
[url=http://clomidfrt.online/]how to get clomid over the counter[/url]
[url=https://elimite.science/]elimite[/url]
[url=https://femaleviagra.science/]viagra 25 mg daily[/url]
[url=http://augmentin.africa/]augmentin 875mg 125mg[/url]
[url=https://celecoxib.charity/]celebrex[/url]
[url=https://vardenafil.skin/]levitra 20mg australia[/url]
[url=https://clomidfrt.online/]clomid prescription cost[/url]
[url=http://cleocin.charity/]clindamycin 300 mg tablet[/url]
[url=https://budesonide.trade/]budesonide 0.25 mg[/url]
[url=https://femaleviagra.science/]viagra 100 pill[/url]
[url=https://isotretinoin.skin/]accutane online uk[/url]
[url=http://isotretinoin.skin/]where to get accutane online[/url]
[url=https://clomida.foundation/]buy clomid online canada[/url]
[url=http://celebrex.charity/]celebrex pill[/url]
[url=https://sildalisa.gives/]cheapest generic sildalis[/url]
[url=https://augmentin.media/]augmentin tablets[/url]
[url=https://clomidfrt.online/]clomid over the counter online[/url]
[url=http://tamoxifen.pics/]tamoxifen 20 mg india[/url]
[url=https://elimite.science/]elimite online[/url]
[url=http://zestoretica.online/]zestoretic medication[/url]
[url=http://happyfamilystore24h.online/]cheapest prescription pharmacy[/url]
[url=http://disulfiram.party/]buy antabuse without prescription[/url]
[url=https://tadalafilvm.online/]tadalafil india[/url]
[url=https://tamoxifen.pics/]buy nolvadex[/url]
[url=http://disulfiram.party/]where can i get antabuse[/url]
[url=https://prednisone.party/]how to buy prednisone[/url]
[url=http://happyfamilypharmacy24.online/]drugstore com online pharmacy prescription drugs[/url]
[url=https://seroquela.gives/]seroquel 100 mg cost[/url]
[url=https://isotretinoin.skin/]accutane in india[/url]
[url=https://happyfamilypharmacy24.online/]online pharmacy drop shipping[/url]
[url=https://malegra.science/]buy malegra 200 mg[/url]
[url=https://disulfiram.party/]buy antabuse uk[/url]
[url=http://cleocin.charity/]cost of cleocin 100 mg[/url]
[url=http://clomidfrt.online/]clomid online paypal[/url]
[url=http://clomidfrt.online/]clomid pills otc[/url]
[url=http://disulfiram.party/]can you buy antabuse online[/url]
[url=https://sildalisa.gives/]sildalis 120 mg order usa pharmacy[/url]
[url=http://disulfiram.party/]anti buse pills[/url]
[url=https://tadalafilvm.online/]discount tadalafil[/url]
[url=https://tadalafilvm.online/]generic daily cialis online[/url]
[url=https://budesonide.trade/]budesonide cost uk[/url]
[url=http://augmentin.media/]amoxicillin over the counter uk[/url]
[url=http://furosemide.party/]furosemide 40 mg tablet[/url]
[url=http://happyfamilypharmacy24.online/]sure save pharmacy[/url]
[url=https://piroxicam.foundation/]buy piroxicam gel[/url]
[url=http://augmentin.media/]amoxicillin online purchase[/url]
[url=http://vardenafil.skin/]vardenafil tab 20mg buy online[/url]
[url=http://femaleviagra.science/]viagra buy in australia[/url]
[url=https://budesonide.trade/]budesonide online[/url]
[url=http://augmentin.solutions/]amoxicillin 125 mg[/url]
[url=https://tamoxifen.pics/]tamoxifen price australia[/url]
[url=https://disulfiram.party/]where can i get antabuse pills[/url]
[url=http://augmentin.solutions/]augmentin drug[/url]
[url=https://sildalisa.gives/]buy cheap sildalis[/url]
[url=https://tadalafilvm.online/]cialis 2.5 mg tablet[/url]
[url=https://disulfiram.party/]can you buy antabuse over the counter[/url]
[url=http://disulfiram.party/]antabus[/url]
[url=http://furosemide.party/]furosemide tab 40mg[/url]
[url=https://augmentin.solutions/]amoxicillin 50[/url]
[url=https://elimite.science/]elimite cost[/url]
[url=https://clomidfrt.online/]clomid 5850 tablets[/url]
[url=http://vardenafil.skin/]levitra canada cheap[/url]
[url=https://piroxicam.foundation/]feldene tablets 20mg[/url]
[url=https://elimite.science/]where can i buy elimite cream over the counter[/url]
[url=http://erectafil.party/]buy erectafil[/url]
[url=https://propranololpill.online/]propranolol 40 mg tablet[/url]
[url=https://valacyclovir.party/]australia price for valtrex[/url]
[url=http://zanaflextizanidine.gives/]tizanidine brand name[/url]
[url=https://antabuse.charity/]antabuse cost canada[/url]
[url=http://erectafil.party/]erectafil from india[/url]
[url=http://prazosin.foundation/]prazosin 1mg[/url]
[url=http://prazosin.foundation/]prazosin for cats[/url]
[url=http://bactrim.trade/]buy bactrim online uk[/url]
[url=https://accurane.online/]accutane 2017[/url]
[url=http://bactrim.trade/]bactrim ds generic[/url]
[url=https://bactrim.trade/]bactrim 960 mg[/url]