Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

Interesting info on random number generation flaws in IoT devices

skywatch last edited by skywatch

https://thehackernews.com/2021/08/a-critical-random-number-generator-flaw.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TheHackersNews+(The+Hackers+News+-+Cyber+Security+Blog)&_m=3n.009a.2543.de0ao0d5iu.1m2xINteresting
Reply Quote 1
1 Reply Last reply

1
Posts

13
Views

Suggested Topics

Help with bar project....
General Discussion • • Viker

12

0
Votes

12
Posts

111
Views

i'm to stupid for this
Which is the "best" ESP-32?
General Discussion • • NeverDie

8

1
Votes

8
Posts

49
Views

@NeverDie Oh, sorry, I wasn't trying to get proof or anything. I just was asking for your personal experience. Not doubting, just looking at them now and wondering how it had been for you. Do you mind saying which one you have that you are so happy with? I've been looking at different 'best' lists, and getting some conflicting info on them. I'd just like a little more input before buying one, but with seeing all the improvements, and how many devices we have that could use it, now I'm wanting to do it sooner rather than later. Thanks!
Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?
General Discussion • • NeverDie

131

0
Votes

131
Posts

587
Views

OK, here it is corrected for 915Mhz, as it should have been the first time: 12:34:34 May 20 2022 V1.1 104_LoRa_Receiver_Detailed_Setup Starting LoRa Device found SX1262,915000000hz,SF7,BW125000,CR4:5,LDRO_Off,SyncWord_0x1424,IQNormal,Preamble_8 SX1262,PacketMode_LoRa,Explicit,LNAgain_Boosted Reg 0 1 2 3 4 5 6 7 8 9 A B C D E F 0x800 00 00 00 00 29 07 20 09 00 10 19 D4 10 4E 10 13 0x810 10 4B 10 1E 10 4B 10 1E 00 DA AA E6 DB 00 00 00 0x820 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x830 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x840 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x850 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x860 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x870 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x880 03 00 00 5F 10 08 00 00 08 04 00 39 30 00 00 0C 0x890 00 00 00 10 BD 0F 0A 07 10 00 26 01 01 53 06 07 0x8A0 10 00 AD 20 5A 04 F0 02 56 56 54 43 96 20 40 00 0x8B0 00 83 11 00 01 04 0A 4C 14 0A 2F 01 6B FF FF 00 0x8C0 00 A0 20 00 00 00 AC 00 1C 00 00 AB 05 30 12 13 0x8D0 0C 15 16 40 06 00 00 10 E8 00 00 00 00 00 39 39 0x8E0 90 39 0C 04 40 20 16 38 06 00 05 04 03 02 01 01 0x8F0 03 00 00 00 30 00 00 00 00 00 00 00 00 00 00 00 0x900 30 00 00 00 00 64 00 00 00 00 00 00 24 04 47 04 0x910 00 2F 00 00 00 03 0A 00 15 35 09 00 02 29 67 08 0x920 07 04 05 00 00 00 00 00 00 00 00 00 00 00 00 00 0x930 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x940 00 07 00 03 02 00 10 00 0A 00 03 04 00 14 0C 00 0x950 00 00 00 06 00 00 00 00 00 00 00 00 00 00 00 00 0x960 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x970 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x980 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x990 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9B0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9E0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x9F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Receiver ready - RXBUFFER_SIZE 32 4s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,1,Errors,0,IRQreg,16 5s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,2,Errors,0,IRQreg,16 6s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,3,Errors,0,IRQreg,16 7s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,4,Errors,0,IRQreg,16 8s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,5,Errors,0,IRQreg,16 9s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,6,Errors,0,IRQreg,16 11s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,7,Errors,0,IRQreg,16 12s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,8,Errors,0,IRQreg,16 13s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,9,Errors,0,IRQreg,16 14s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,10,Errors,0,IRQreg,16 15s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,11,Errors,0,IRQreg,16 16s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,12,Errors,0,IRQreg,16 17s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,13,Errors,0,IRQreg,16 18s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,14,Errors,0,IRQreg,16 19s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,15,Errors,0,IRQreg,16 21s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,16,Errors,0,IRQreg,16 22s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,17,Errors,0,IRQreg,16 23s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,18,Errors,0,IRQreg,16 24s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,19,Errors,0,IRQreg,16 25s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,20,Errors,0,IRQreg,16 26s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,21,Errors,0,IRQreg,16 27s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,22,Errors,0,IRQreg,16 28s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,23,Errors,0,IRQreg,16 29s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,24,Errors,0,IRQreg,16 30s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,25,Errors,0,IRQreg,16 32s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,26,Errors,0,IRQreg,16 33s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,27,Errors,0,IRQreg,16 34s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,28,Errors,0,IRQreg,16 35s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,29,Errors,0,IRQreg,16 36s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,30,Errors,0,IRQreg,16 37s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,31,Errors,0,IRQreg,16 38s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,32,Errors,0,IRQreg,16 39s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,33,Errors,0,IRQreg,16 40s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,34,Errors,0,IRQreg,16 41s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,35,Errors,0,IRQreg,16 43s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,36,Errors,0,IRQreg,16 44s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,37,Errors,0,IRQreg,16 45s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,38,Errors,0,IRQreg,16 46s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,39,Errors,0,IRQreg,16 47s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,40,Errors,0,IRQreg,16 48s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,41,Errors,0,IRQreg,16 49s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,42,Errors,0,IRQreg,16 50s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,43,Errors,0,IRQreg,16 51s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,44,Errors,0,IRQreg,16 52s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,45,Errors,0,IRQreg,16 54s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,46,Errors,0,IRQreg,16 55s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,47,Errors,0,IRQreg,16 56s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,48,Errors,0,IRQreg,16 57s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,49,Errors,0,IRQreg,16 58s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,50,Errors,0,IRQreg,16 59s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,51,Errors,0,IRQreg,16 60s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,52,Errors,0,IRQreg,16 61s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,53,Errors,0,IRQreg,16 62s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,54,Errors,0,IRQreg,16 64s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,55,Errors,0,IRQreg,16 65s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,56,Errors,0,IRQreg,16 66s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,57,Errors,0,IRQreg,16 67s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,58,Errors,0,IRQreg,16 68s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,59,Errors,0,IRQreg,16 69s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,60,Errors,0,IRQreg,16 70s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,61,Errors,0,IRQreg,16 71s Hello World 1234567890*,CRC,DAAB,RSSI,-42dBm,SNR,12dB,Length,23,Packets,62,Errors,0,IRQreg,16 72s Hello World 1234567890*,CRC,DAAB,RSSI,-42dBm,SNR,12dB,Length,23,Packets,63,Errors,0,IRQreg,16 73s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,64,Errors,0,IRQreg,16 75s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,12dB,Length,23,Packets,65,Errors,0,IRQreg,16 76s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,12dB,Length,23,Packets,66,Errors,0,IRQreg,16 77s Hello World 1234567890*,CRC,DAAB,RSSI,-44dBm,SNR,11dB,Length,23,Packets,67,Errors,0,IRQreg,16 78s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,68,Errors,0,IRQreg,16 79s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,69,Errors,0,IRQreg,16 80s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,70,Errors,0,IRQreg,16 81s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,71,Errors,0,IRQreg,16 82s Hello World 1234567890*,CRC,DAAB,RSSI,-43dBm,SNR,11dB,Length,23,Packets,72,Errors,0,IRQreg,16 83s Hello World 1234567890*,CRC,DAAB,RSSI,-45dBm,SNR,12dB,Length,23,Packets,73,Errors,0,IRQreg,16 84s Hello World 1234567890*,CRC,DAAB,RSSI,-46dBm,SNR,11dB,Length,23,Packets,74,Errors,0,IRQreg,16 Interestingly, even though the RSSI is vastly better, the SNR stays at around 11 to 12dB. Well, regardless, the Dorji plainly appears to perform much better in my particular home environment, at least so far, at the given frequencies and other library defaults (which do appear to be different between the SX1280 and the SX1262 (e.g. default bandwidth), so a fair comparison will need to be more equal than what's provided by only just the library defaults). When I'm a bit more prepared, I'll compare/contrast the two different radios performance along what I would guess is the worst possible transmission path in my house. When that time comes, I'll report the results on a new thread that will be meant for comparing the performance of different radio modules. For now this was just a preliminary test to confirm that the DORJI radio module was working at all, but the results were interesting anyway.
ESP-NOW
General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • • NeverDie

22

0
Votes

22
Posts

6143
Views

@NeverDie I would sure hope it would be faster, otherwise no point in doing it. You can change the circuit so that the ESP8266 doesn't even have power unless it gets an external trigger. From the video this needs some kind of external trigger either way. I would have to test it to be sure, but it sounds like it's booting fresh each time, so I don't see how it could be faster.
Coronavirus (way, way, off topic)
General Discussion • • NeverDie

110

0
Votes

110
Posts

1027
Views

@NeverDie it's kind nostalgic to see posts like this
A more convenient Arduino Uno
General Discussion • • NeverDie

5

0
Votes

5
Posts

70
Views

I even managed to solder a nRF24L01+ to the board so everything works on 3.3Volt, and this node works fine. This took a lot of scratching copper from the board...
Best way to share a *complete* set of KiCAD design files?
General Discussion • • NeverDie

8

0
Votes

8
Posts

55
Views

@NeverDie I think that usually you can 'rescue' the symbols and part footprints from the files directly as well. I've had it successfully work usually, but a couple times when opening an old file from a previous KiCad version I've had some errors. Knock on wood, but so far nothing has been unrecoverable. Of course having a dedicated symbol and footprint library would make it even more foolproof, but it might not be necessary.
Most reliable "best" radio
General Discussion • • NeverDie

4

0
Votes

4
Posts

11
Views

Well, with a projected lifespan as long as that, I might as well have it listen for an ACK to confirm that its transmission was successful. Who cares if it shaves 100 years off its lifespan if it still has 88 years left afterward anyway? LOL. I'm guessing that the long tail pictured above is sx1262 simply idling after transmission before the default library code puts it to sleep. I did try some lower transmission power levels, but apparently my worst-case path needs more or less the full 22dBm. 15dBm, which is the max power of an SX1261, was nowhere good enough. For that reason, I won't bother looking any more for an SX1261 module, since the chip can't natively go higher than 15dBm on transmit power. 18dBm tested better but also was not fully reliable the way 22dBm is. Of course, better antennas could improve upon this, but those are the results with a simple 3.25" quarter wavelength wire whip antenna on both transmitter and receiver. The "next thing" on the horizon may be LR-FHSS, which stands for Long Range Frequency Hopping Spread Spectrum. According to Semtech, it has even better energy specs than LoRa and better range and better interference/coexistence. Not surprising that everything needs to be better, better, better, or else it won't get adopted. However, it's still early days, and so far there's nothing yet on Aliexpress. I'm guessing maybe in 5 years the LR1110 chip and related modules may start to show up in the marketplace at low prices, but right now development boards are pricey.

Interesting info on random number generation flaws in IoT devices

Suggested Topics

Help with bar project....
General Discussion • • Viker

Which is the "best" ESP-32?
General Discussion • • NeverDie

Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?
General Discussion • • NeverDie

ESP-NOW
General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • • NeverDie

Coronavirus (way, way, off topic)
General Discussion • • NeverDie

A more convenient Arduino Uno
General Discussion • • NeverDie

Best way to share a complete set of KiCAD design files?
General Discussion • • NeverDie

Most reliable "best" radio
General Discussion • • NeverDie

142
Online

10.5k
Users

10.8k
Topics

110.6k
Posts

Interesting info on random number generation flaws in IoT devices

Suggested Topics

Help with bar project.... General Discussion • • Viker

Which is the "best" ESP-32? General Discussion • • NeverDie

Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module? General Discussion • • NeverDie

ESP-NOW General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • • NeverDie

Coronavirus (way, way, off topic) General Discussion • • NeverDie

A more convenient Arduino Uno General Discussion • • NeverDie

Best way to share a *complete* set of KiCAD design files? General Discussion • • NeverDie

Most reliable "best" radio General Discussion • • NeverDie

142Online

10.5kUsers

10.8kTopics

110.6kPosts

Help with bar project....
General Discussion • • Viker

Which is the "best" ESP-32?
General Discussion • • NeverDie

Anyone using/tried the E28-2G4M27S 2.4Ghz LoRa SX1280 27dB module?
General Discussion • • NeverDie

ESP-NOW
General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • • NeverDie

Coronavirus (way, way, off topic)
General Discussion • • NeverDie

A more convenient Arduino Uno
General Discussion • • NeverDie

Best way to share a complete set of KiCAD design files?
General Discussion • • NeverDie

Most reliable "best" radio
General Discussion • • NeverDie

142
Online

10.5k
Users

10.8k
Topics

110.6k
Posts