REPLicated2's comments

On: Dropbox Paper mobile App Discontinuation

[REPLicated2]

I always liked the file syncing part of Dropbox, and was considering their Family plan a few years back, until they increased the prices. If I remember correctly, their reasoning included all the additional features like Paper which you would get but that I never needed. It's currently at 203 EUR/year here - pretty steep if you only care about the core usecase of syncing files.

On: A Full Break of the Bitstream Encryption of Xilinx 7-Series FPGAs

[REPLicated2]

Depending on your viewpoint, this may actually be a boon for reverse engineering efforts to counter planned obsolescence.

[segfaultbuserr → REPLicated2]

Yes. Unfortunately, it's a double-edged sword. The same technology is needed for the FOSS community to create secure hardware.

[snvzz → segfaultbuserr]

Security through obscurity? Nah.

[loeg → snvzz]

This was security through a cryptographic design. It was just a broken design. If you consider confidential symmetric or privkeys "obscurity," sure, all crypto is obscurity.

[snvzz → loeg]

There's no need to encrypt the keys as you hardcode them into the FPGA, if you control the hardware as you do this.

I certainly don't see how anything FOSS would be affected, and would appreciate concrete examples.

[johncolanduoni → snvzz]

This mechanism also included an HMAC, responsible for authenticating the bitstream. That's useful even if the bitstream is public knowledge.

On: Ultimate Guide to Switch Debounce

[REPLicated2]

When I started dabbling in electronics recently, I ran into switch bouncing apparently as I used a push button to generate the "clock" input of a CD4017 decade counter and it showed rather erratic output behavior.

Adding a capacitor fixed it. Which reminds me that I should really invest in an oscilloscope to validate my (not so) educated guesses.

Great resource to read up on this topic, thanks.