Theory and Practice of Cryptography

[klsta]

It's a shame the audio is too poor to listen to.

[wresing]

If you want to keep your communications secure from government spying, simply rely on images and metaphor, especially ones involving compassion and empathy. Speak clearly with care and insight. It will all be gobbledygook to them.

[lwanatt]

your right i need to develop a way of speaking to my friends in metaphor you could never be used in court because no one could prove what your words meant

[NerdInHisShoe]

@wresing Or completely misconstrued as terrorist chatter, landing you and the recipient in Gitmo.

[TheBatchGuy]

i am currently in study for cryptography.. it is so necessary for today's urban lifestyle

[lwanatt]

maybe you can explain it to me no matter how i imagine it i cant figure out how you could send a key with out compromising your security with the act of sending the key, unless you used a separate line that the government wouldnt be recording, like rf for example, the only way to make a truely secure connection is to deliver the initial key in person and send new keys regularly through the encrypted link

[b1naryd1g1t5]

@lwanatt

It's called public key cryptography. There is a public key and a private key. The public key can be viewed by anyone and is used to send encrypted messages. However, it cannot be used to DECRYPT those messages. Only the private key can do that and no one but the recipient has it. Google has a lot more info. Read up on Diffie-Hellman key exchange and the RSA algorithm.

[ORIONCUBE]

This is obsolete technology, multidimensional quantum fractals are here now, capable of withstanding brute force attacks from existing super-computers and quantum computers of the future

[sonnyhe2002]

its not obsolete.

quantum crptogrphy needs quantum computer to perform. and quantum computer isn't even a reality yet, so normal cryptography won't be obsolete anytime so.

[someman7]

Not true, ORIONCUBE didn't deserve thumbs down, because he obviously know something you don't. Quantum cryptography relies on quantum mechanics (not electronics and computers), and such a secure channel is prone to evesdropeers. However, this probably doesn't mean the end of traditional criptography methods - yet anyway.

[sonnyhe2002]

i know that...

[someman7]

Why would you need a quantum computer then?

Perhaps for fractals (I don't know), but not for quantum criptogryphy altogeather. Say what you know.

[sonnyhe2002]

hmmm, i really have no idea what ur saying

[someman7]

You just said otherwise few hours ago. I'm saying, you don't need a quantum computer for quantum criptography which you implied... Wah.

[SemperHacker]

VERY VERY NICE!! 5 stars I think Nano encryption will be the only way blackhats and governments cannot decrypt data.

[someman7]

you mean quantum cryptography (photons&stuff)?

[wildchildplasma]

Ok so you have a distorting (called encryption)

Don't you just mathematically edit out all but discovered recursion patterns do this a few times with dirrent algorythms.

then use the key.

[StephenWeis]

I don't quite follow what you mean. One common mistake in cryptography is assuming that a function that "looks random" is in fact difficult to invert. So, "mathematical editing" tools are not easy to construct.

[wildchildplasma]

Yep if your not clever they are not easy to make.

Check my Maths out on my homesite

Accessable via my channel. There is also some Quantum noise simulation experiments on one of my vids.

And think Nano crystal arrays.

[n080di]

@StephenWeis Why can't RSA-Alice do this?: when Bob gives her m1 and m2, she flips a coin and if it returns i, she xors mi with an encrypted version of her private key and then encrypts the whole thing. When Bob gets it, he can no longer know whether she flipped 0 or 1, and this does not involve randomization.

[n080di]

@StephenWeis Are there efficient ``controlled broadcast'' encryption systems where one would like a group of people to be able to read your messages?

[motionthings]

please try to kill the room mic next time.

[StephenWeis]

Sorry about the problems with the sound quality. It can't be helped now, but shouldn't be an issue with the final lecture.

[naraithsil]

These tech talks are brilliant.