Topic: What's best - SHA256 or Scrypt? (Read 3936 times)

I generally am not short tempered, but people who are unwilling to learn, or repeat the same nonsense after they're proven wrong particularly irk me. I won't look down on anyone for how much knowledge they have in a field, but spreading bad information is something else. I am not often wordy, however, so try not to take terse posts as a sign of me being irritated with a question, I just want to give helpful information as efficiently as possible. Also, the way I respond to known trolls is very different from the way I respond to everyone else.

Well, to be perfectly honest, I have it a little easier. I don't do C++, I do C and assembly, mostly, although lately I've been playing with Perl.

I'm self-taught and have implemented many encryption and hashing algorithms in code. I taught my math teacher in high school crypto, as a matter of fact.

Okay, get this through your thick skull:

Hash function -> One way message digest. Cannot go from digest to input without brute force (barring attacks against the algo).
Encryption algorithm -> A reversible encoding that can only be reversed with additional information, the key.

PGP may very well use SHA-2, but it's for hashing, not for encryption.

@Wolf0

Ok, I get it.

Ok, I'll PM you with my feature idea.  I know for sure I'll at least get some brutal honesty from you - I just hope if it is a good feature that it won't leak until I launch a coin, if I ever do. Coming your way, bro.  Thanks again.

@Wolf0,

Allow me to be straight forward with you, bro.  I like you but I'm a bit skeptical cause of your attitude.  Maybe you're going thru personal issues so you're short tempered and that one guy you cut down yesterday, well, he had it coming but in general your posts are very short tempered and combative.

I'm not judging you cause I have a short fuse but from the perspective of someone who doesn't know you it's hard to trust a guy who appears volatile.

I really need to talk to someone who know how to code to see if these ideas I have can be feasible and how much they would cost but I don't know who to trust.  The guy with 10,000 posts didn't respond to me.  

My feeling is that, like MArkM, most Sr guys here are sick of crapCoins so they doesn't wanna help me.

I'm trying to not launch another crapCoin, which is why I'm doing polls and asking for input on favorite features.  It may not be a PPcoin but I definitely want to add value and a new angle - something most crapCoins don't even ask the community about let alone care enough to pay for extra features.

And let's face it, like I said months ago, massive alt coins are coming and they can't be stopped - at least I'm trying to get valuable input to launch a coin for the miners, a coin with some innovation to help level the playing field.  So why not help these coins who add some value and care long term cause you know soon, by next year we'll see a logarithmic jump in alt coin launches so why not help the few guys trying to launch a coin right with little payment and a long term view.

I desperately need a programmer to talk these things over but hazard and C4n10 just don't respond. I hope this poor service ain't normal.

It is simply nobody has written (ported) the code.  Period.  If tomorrow someone released a coin which was merged mineable with LTC as the parent chain it would exist.  Until that happens you aren't going to see any pools as no Scrypt based coins support merged mining.


That isn't how merged mining works.  One coins is the parent or master coin.  This coin doesn't even need to be aware that it is being used for merged mining.  It would make sense for this coin to have lots of hash power.  For Scrypt based coins it would make sense for the parent coin to be LTC.

Then each coin that wants to be merged mined along side LTC (and other merge mining capable coins) needs to be modified so that it supports finding block solutions either in its own chain or in its parents chain (LTC). 

That's awesome dude.  Respect.

That's a hard language to master.  I took a C++ class in college and I was a 3.8 GPA student and that class was way harder than I expected - barely got a B+ although i bypassed buying the 3 required textbooks which may have helped a bit.  

It was my first computer class and I jumped over the pre-requisites to take it but still, it was an intro class.  I have a newfound respect for hackers and programmers, especially if they're self taught.

You're joking right?  You think that's easy?

Why then would the CIA show up in Eastern Europe and offer one guy an immediate flight to America and a job for the Feds? They literally took him on the spot with his parents permission of course.  If its no big deal why don't they hire you?

And the other guy got busted by the Feds and google bailed him out and paid the Feds near $400,000 fee - their cost to track him down, and now he works for google but since he's living in a 3rd world country (eastern Europe) and google basically owns him he doesn't get paid jack.

You think google would pay $400,000 upfront cost for you or the 10 year olds you know.  Both these kids had ZERO programming training and obviously they're unique and talented otherwise the Feds and the google wouldn't pay big money for some kids with no formal education.

I'm just saying a person can be self taught and be very talented and capable so a degree is nice but not necessary.  Creativity is something you can't teach and I'm guessing that's what set these kids apart.

Yea and I've met 10 year olds who hacked into the NSA and the CIA.

Get real

May I ask what your background or education is for programming/computers?  If you're self learned that's fine too - I've personally met 16 year old hackers all self learned who hacked in NASA servers and the pentagon.

Sounds great but I can barely understand half your directions.  I'm sure a programmer looking at your post can figure it out so i'll put an add on Craigslist in the next few days to see how much it would cost me to have a guy come here and spend a few hours (hopefully not more - programmers aren't cheap) setting these servers to mine these coins you're recommending.  Once it's all set-up I'm confident I can fix any bugs or issues.

 Thanks again.

Fairbrix, like Tenebrix, is scrypt based, they are what litecoin eventually came out of.

You should be able to CPU-mine them. Maybe put a third of your cores on each of those and a third on primecoin.

Or maybe put just one core on each of them and the rest on primecoin, if primecoin looks like it will pay something sooner, since it is likely more liquid currently.

On a sixteen gig dedicated server out on the net in a datacentre I run p2pool and used to have all the merged coins right on that machine too.

Then though p2pool would complain that some coins took more than five seconds to respond to getwork requests, so I moved geistgeld and i0coin to a separate machine and told p2pool to use them from there. I still though at times also run geistgeld and i0coin on the p2pool machine I just don't tell p2pool to ask getworks from there as it is into swap space enough that it would get those over 5 seconds problems. I run them there simply because the time when all other miners momentarily vanish I still need a connection in order to mine. I0Coin dies almost daily, so there still are times when everyone's happens to have died at once, so I like to run some spares to lower my unable-to-mine time. GeistGeld people tend to stick to for a while then decide their RAM could be put to better use so they go away once they have accumulated however much they feel will be enough to be a decent nestegg when it comes back into the limelight, so from time to time I would find zero connections, so it seemed reasonable to have a spare copy of it myself to tide me over those times.

So yeah a couple of 16 gig machines should be fine, put p2pool and all the merged coins on one, but tell p2pool to getwork for i0coin and geistgeld from the other. Run I0Coin and GeistGeld on both, in case all other miners happen to be down at any particular moment. You should be able to run Fairbrix-qt  (*) on one and Tenebrixd on the other also, with both using all their cores to (with "nice", see "man nice") cpumine using minerd. ("nice" primecoin too, I have that on both servers too. Once it has a standalone cpu miner, "nice" that.)

(*) Note I don't have GUI of Fairbrix-qt on either server; the GUI shows up on my desktop at home.

-MarkM-

I get it.  So I need to befriend a local programmer on craigslit to come over and set up merge mining for the harder coins like fairbrix.

I bought an older dual quad core Xeon L5420 dell server (so 8 cores) with 16 gigs of ram.  Is that enough?  If not I can buy another 16 gigs and with 32 gigs of ECC ram I imagine it's plenty.  Or I can actually network 2 of these servers together (if that's possible) cause I gave my brother one but he doesn't use it.  

They each have 4 76GB 15K scsi drives, on board controllers. Ethernet cards, etc, nothing was stripped from them so I think they can get the job done but now I need to find a programmer in my area to come help me out - I'm losing precious time.  These servers are low voltage so the electricity bill should be ok, although they're pretty noisy but I do have a spare room.  They sit here I start them once per month - what a waste when they could be merge mining.

Wish you lived on Oregon, Mark, lol, hard to find trustworthy people when you have small children in the house.  Scary. Thanks again and sorry my idea for another CrapCoin upsets you.  I understand your frustration but without being able to mine I feel a sense of urgency to start something - to do something and accumulating devcoin and ixCoin has been slow.  

I've had large orders (over 120,000 ixCoin) on vircurex for days now and only 5,000 coins were bought and I've moved up the bid 4 different times.  That's it - I'm not gonna keep chasing it, someone will take my offer which is way generous compared to last week or I'll just let these orders sit there.  

And spending money is risky - mining, once you pay off your rig is pretty much risk free so I'd rather merge mine something - anything.  

Thanks again, Mark.

http://en.wikipedia.org/wiki/Encryption


Are you aware that PGP uses SHA-2 as it's encryption algorithm.

I set up a Dell Optiplex 755 with 8 gigs of RAM, installed live fedora linux, which caused only 10 gigs of swap space to be created, and ran GeistGeld. It was killed due to out of memory error before it even got to the point where it had rescanned and was ready to actually work.

I0Coin though I have often run along with bitcoin and BBQcoin or bitcoin and devcoin, or even all of those, plus fairbrix-qt, all on an 8 gig machine.

I am actually starting to think about hacking a copy of IXCoin into a version of GeistGeld simply because such a hack is cut and paste trivial so even though its nicer to wait until I have even more coins thus nicer to wait for a full update to latest bitcoin code, the sheer RAM needs of GeistGeld are getting annoying enough I start thinking it might be worth my time to do the quick hack to make an out of date copy based on IXCoin just to save me some RAM.

But then I just got 16 gigs of RAM for an IBM Intellistation Z Pro I have here, and found even with only two gigs of swap I can run GeistGeld in that so far, and once it no longer runs in that I can take the time to make a proper sized swap space for it. So hey, I am content to keep on racking up GeistGeld by throwing RAM at it for now, since once a merged coin based on latest bitcoin does happen its not only GeistGeld but also GRouPcoin and I0Coin and CoiLedCoin that will suddenly have many more miners flooding to them eating more and more of those pies leaving less of each for me.

Basically if you want something so easy to do that every computer-illiterate using Windows can do it you will hardly make anything because there are so damn many such people out there who will all easily grab part of the pie. If you want more than just the tiny crumbs such vast unwashed masses would leave you you need something as many as possible of those masses consider "too hard" or "too complicated" to grab a piece of. Something its easier for them to buy than to mine, maybe.

If six billion people can all grab a slice without hardly even trying, you're not going to get more than one six-billionth unless you have some edge they don't have, simple as that...

-MarkM-

Cryptography = Cipher = Encryption.

SHA-2 is a set of encryption hash functions.
A hash function is an algorithm

SHA-2 is an encryption algorithm.

QED.


Edit.

Can't mine Fairbrix ... am using Fedora -_-; Fairbrix uses everything that is specifically not on Fedora apparently.

lol I was wondering if that's what he was referring to, I thought ADHD was a pretty well known acronym

I've been doing the same thing - accumulating devcoin and ixCoin and once I have enough I really want to start telling people about them cause I really do believe they have huge potential for different reasons.  It's easy to sell something you believe in.

I tried mining fairbrix and tenebrix but I haven't been successful. 

How much ram is enough ram, Mark, to be able to merge mine more of these coins.  If I could merge mine a few coins until my ASICS get here I won't feel like I'm getting left behind in this huge opportunity.  That's one driving force to want to launch another CrapCoin.  I feel like nothing I do is getting me ahead.

I'm paying outright for some coins, earnings some but mining, that's where it's at and I don't have the expertise to do it, at least not for these out of sight coins which offer little support and advice.  I can mine coins like litecoin but its not profitable.

Man, I had no idea these established coins had that many issues or needed that much work.   Too bad those coins with a higher value don't pitch in more money for the rest of the alt coins.