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Current Radio Rules Mean Sinclair ZX Spectrum Wouldn't Fly Today

falzer Since 1982? (64 comments)

>The question is, what have we learned as an industry since 1982?

Quite a bit.
I have three books on electromagnetic compatibility. The most recent, Electromagnetic Compatibility Engineering (2009), is comprehensive and thick enough to stun an ox.

more than 2 years ago

Lessons Learned From Cracking 2M LinkedIn Passwords

falzer Re:Do not use standard passwords (198 comments)

What next? You use 15 or 20 character passwords, or a passphrase of several words.

But for the server side, use key strengthening with something like bcrypt or scrypt.
If it takes 1 second on very fast hardware to hash a single password, then your attacker has to also spend a lot of time on each hash attempt.
scrypt was also designed with custom hardware attacks in mind (it uses lots of memory) so it is still slow and expensive even if the attacker has key derivation logic in an asic or fpga.

If it takes a tenth of a second for an attacker to derive a key (or hash) from a password then a 10 character password is still incredibly strong.
If the passwords have salt (as they should) even a plain english dictionary attack on a 2M password file will take years to finish.

As faster hardware becomes available, you adapt by changing the key derivation parameters.

more than 2 years ago

Magical Thinking Is Good For You

falzer Re:Stupidity. (467 comments)

You are hilarious.

more than 2 years ago

Militarizing Your Backyard With Python and AI

falzer Re:PITA Time? (112 comments)


more than 2 years ago

ESL — a CRT-Based Replacement For CFL Lights Without the Mercury

falzer Re:Warm white? Yuck! (348 comments)

Damn those benighted fools for having a preference that differs from yours!

more than 2 years ago

Computer Games That Defined RPGs In the 1980s

falzer Wasteland. (350 comments)

Wasteland. The spiritual ancestor of the Fallout series.

more than 2 years ago

Hack Your Holiday Decorations

falzer Re:I've had networked RGB xmas lights since 2k5 :) (48 comments)

I did something similar around the same year.
I made a string of many (56 if I remember correctly) blue LEDs, each individually addressable and PWM dimmable, multiplexed thru an ethernet cable + 1 extra wire, all running off one atmega8 and a handful of 2n3906 / 2n3904s.
No PC interface though, just had little programs written for the microcontroller.

more than 3 years ago

MIT's New Camera Can Take 1 Trillion Frames Per Second

falzer Re:What (197 comments)

1) Analog, used it just yesterday.

more than 3 years ago

Dell's Misleading Graphics Card Buying Advice

falzer Reminds me of a sound demo. (381 comments)

I can't remember what software it was, but it included samples labeled "8-bit" and "16-bit" to demonstrate the difference between 8 and 16 bits/sample audio.
I assumed the 8-bit audio file was deliberately made noisy and grainy, because it sounded much worse than the 16 bit file downsampled to 8.

more than 3 years ago

Are Maker Spaces the Future of Public Libraries?

falzer Re:I think they are confusing (158 comments)

Because Arduinos and plastic printers are enough for everyone.

more than 3 years ago

Ask Slashdot: Post-Quantum Asymmetric Key Exchange?

falzer Easy fix: (262 comments)

Square the number of bits used in your asymmetric keys.

(Tongue in cheek.)

more than 3 years ago

Microsoft, Mozilla and Google Ban Malaysian Intermediate CA

falzer Re:Who generates 512-bit RSA keys these days? (80 comments)

>RSA for example needs two prime numbers as a keypair, so while the key length might be 512 bit, there are actually not that many from those 2^512 numbers to choose from. Also, certain key values are prone to attacks.

How many is not that many? Bruce Schneier in Cryptography Engineering calculates that 1 in 1386 numbers in the 2^2000 bit range is prime. In the 2^512 range primes are even more frequent, according to prime counting estimates.

more than 3 years ago

Is the Maker Movement Making It Cool For Kids To Be Nerds?

falzer No TRUE Scotsman. (220 comments)

All the real nerds were doing circuits before Make and Arduino came along.


more than 3 years ago

Why Fingernails On a Chalkboard Sound Painful

falzer Re:Taught? (176 comments)

It would get very tiresome for everyone to have to explain from axioms and first principles every opinion they held, even if they did reflect upon and study them.
Alternately, do you think people who agree with you on whatever subject have also been "culturally informed" that way?

I am, of course, not talking about capitalism, communism, chalk, or cottonballs, but wearing socks with sandals.

more than 3 years ago

"Holographic" Desk Allows Interaction With Virtual Objects

falzer Awesome game ideas! (85 comments)

Just imagine: virtual hand-washing dishes, virtual weed pulling, virtual pebble sorting.
The video-game possibilities are endless!

more than 3 years ago

Jumentum Introduces a Single-Chip Linux System

falzer Re:No a Linux system (76 comments)

> A 100MHz ARM core with enough flash and RAM on die to run a full operating system is about $1.

What operating system? What supplier and part number do you have in mind, exactly?

more than 3 years ago

Devices on my home network (less modem):

falzer Re:Usually about six. (374 comments)

Let's not and say we did.

more than 3 years ago


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