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Author Topic: [ANN] [SKC] Skeincoin 0.9.3.1 | Skein-SHA2  (Read 158033 times)
Dosmas
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May 26, 2014, 06:53:21 PM
 #1201


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June 06, 2014, 09:48:54 PM
 #1202

Skeincoin (SKC) +356.57% past month

https://www.cryptonator.com/winners-losers

congrads

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chiguireitor
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June 07, 2014, 01:44:00 AM
 #1203

Lots of coins got hit on the games/faucet and i've shut down the whole thing until i can resolve the security exploit smartypants found.

Around 0.5 BTC where stolen, not a big loss... but whatever...

"Official" PR here http://cryptocoinfaucet.appspot.com/games/

gielbier
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June 09, 2014, 09:57:36 AM
 #1204

Lots of coins got hit on the games/faucet and i've shut down the whole thing until i can resolve the security exploit smartypants found.

Around 0.5 BTC where stolen, not a big loss... but whatever...

"Official" PR here http://cryptocoinfaucet.appspot.com/games/
How much skein was lost?

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chiguireitor
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June 09, 2014, 02:16:54 PM
 #1205

Lots of coins got hit on the games/faucet and i've shut down the whole thing until i can resolve the security exploit smartypants found.

Around 0.5 BTC where stolen, not a big loss... but whatever...

"Official" PR here http://cryptocoinfaucet.appspot.com/games/
How much skein was lost?

51k Sad

+11k i lost on scammy Sharexcoin Cry

This hasn't been a good week for me Sad

On a positive note: I've resolved to get the game IAP working this month

gielbier
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June 09, 2014, 08:58:09 PM
 #1206

Lots of coins got hit on the games/faucet and i've shut down the whole thing until i can resolve the security exploit smartypants found.

Around 0.5 BTC where stolen, not a big loss... but whatever...

"Official" PR here http://cryptocoinfaucet.appspot.com/games/
How much skein was lost?

51k Sad

+11k i lost on scammy Sharexcoin Cry

This hasn't been a good week for me Sad

On a positive note: I've resolved to get the game IAP working this month
Donation addy? I'll send some.

flappyskein Cry

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gielbier
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June 11, 2014, 08:15:34 PM
 #1207

Just an update from me;
atm I'm at 462577.59382136 SKC Only 37433 skc away from my .5m target and moved everything away from exchanges.

Why?
I'm working a project with Skeincoin integrated in it, that's why i need it.
(btw. If ppl want to beta test, send me a PM with your emailadres or alias whatever. )

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glamorgoblin
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June 17, 2014, 01:24:24 AM
 #1208

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?
chiguireitor
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June 17, 2014, 02:37:56 AM
 #1209

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

I would vote "Yay!" do it... it would be nice if Skein had this, and here's a tip, Myriad also uses Skein hashing algo, so they could benefit too from your FPGA implementation.

glamorgoblin
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June 17, 2014, 06:08:26 AM
 #1210

Nice.  Thanks for the MiriadCoin tip.  I have the hash algorithm blocks for a kein or Miriad FPGA miner, but I'm missing the little details like what the initial header fed to the hasher looks like, how the different hash ins/outs connect together (Skein is 512 bits and SHA-256D is 256 bits), if there's anything unique about the difficulty/target calculation, etc.  Any advice on where to find these details?  I've picked apart source code for other coins before for these details and would rather avoid that frustration if the details are available in a more user friendly form.
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June 17, 2014, 09:45:20 AM
 #1211

Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.

As one of the early Bitcoin FPGA devs, I say go for it! Cheesy You won't swamp the network rate for a couple of reasons any time soon. FPGAs are generally slower than GPUs, and relatively expensive -- fewer people have them (think about the average gamer with a strong GPU, vs. the average electronics hobbyist with an FPGA).

It's only power efficiency where FPGAs win in the long run, and this requires wider adoption. In the case of Bitcoin, FPGA miners paved the way to ASICs, and it was only those that really took GPUs out of the business. At the moment, Blakecoin (and its mergemine coins) have had FPGA miners for some time already, but GPU mining is still somewhat profitable. Of course, the low power consumption is a personal gain for any miner Smiley

As for the tech specs -- in any coin, hash.h tells you how the algos are chained up, in this case it's 640-bit data -> Skein -> 512-bit hash -> SHA2 -> final 256-bit hash.

Do have a look at other FPGA projects like the Blakecoin one for examples. Also, I cannot help but link my own -- the Python mining script might still serve as a simple example on how everything works together.

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June 17, 2014, 09:47:21 AM
 #1212

Nice.  Thanks for the MiriadCoin tip.  I have the hash algorithm blocks for a kein or Miriad FPGA miner, but I'm missing the little details like what the initial header fed to the hasher looks like, how the different hash ins/outs connect together (Skein is 512 bits and SHA-256D is 256 bits), if there's anything unique about the difficulty/target calculation, etc.  Any advice on where to find these details?  I've picked apart source code for other coins before for these details and would rather avoid that frustration if the details are available in a more user friendly form.

The headers should be the same as for Bitcoin. The Skein algo used by Skeincoin and Myriadcoin is actually SHA2(SKEIN512(Data)), in other words one round of SKEIN512, and then SHA2 on the SKEIN512 hash to get 256 bits:

Code:
   sph_skein512_init(&ctx_skein);
    sph_skein512(&ctx_skein, (pbegin == pend ? pblank : static_cast<const void*>(&pbegin[0])), (pend - pbegin) * sizeof(pbegin[0]));
    sph_skein512_close(&ctx_skein, static_cast<void*>(&hash1));
    
    SHA256((unsigned char*)&hash1, 64, (unsigned char*)&hash2);
gielbier
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June 17, 2014, 12:31:13 PM
 #1213

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

To quote a large sportsbrand:
Just Do it.

Skein FPGA solution, is progress. I would appreciate it as it would strengthen the network. Now most ppl are just bulk selling their GPU's and buy Gridseeds, which took a hit at the network hashrate for Skeinbased (and other non-SHA256D/Scrypt) Coins.

(ps: Reorder the CGminer/POCLBM dev from SKC, is most of the time in #skeincoin on freenode. If someone could help you, it would be him)

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reorder
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June 17, 2014, 12:39:20 PM
 #1214

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

To quote a large sportsbrand:
Just Do it.

Skein FPGA solution, is progress. I would appreciate it as it would strengthen the network. Now most ppl are just bulk selling their GPU's and buy Gridseeds, which took at hit at the network hashrate for Skeinbased Coins.

(ps: Reorder the CGminer/POCLBM dev from SKC, is most of the time in #skeincoin on freenode. If someone could help you, it would be him)
Hey, I am subscribed to this thread too Smiley Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.
gielbier
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June 17, 2014, 12:56:08 PM
 #1215

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

To quote a large sportsbrand:
Just Do it.

Skein FPGA solution, is progress. I would appreciate it as it would strengthen the network. Now most ppl are just bulk selling their GPU's and buy Gridseeds, which took at hit at the network hashrate for Skeinbased Coins.

(ps: Reorder the CGminer/POCLBM dev from SKC, is most of the time in #skeincoin on freenode. If someone could help you, it would be him)
Hey, I am subscribed to this thread too Smiley Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.

 Grin Grin Grin Grin ( I saw that one)

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chiguireitor
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June 17, 2014, 09:03:15 PM
 #1216

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

To quote a large sportsbrand:
Just Do it.

Skein FPGA solution, is progress. I would appreciate it as it would strengthen the network. Now most ppl are just bulk selling their GPU's and buy Gridseeds, which took at hit at the network hashrate for Skeinbased Coins.

(ps: Reorder the CGminer/POCLBM dev from SKC, is most of the time in #skeincoin on freenode. If someone could help you, it would be him)
Hey, I am subscribed to this thread too Smiley Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.

But but... hardware adders are there for a reason... i dunno... y.. u... no...

reorder
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June 17, 2014, 09:10:54 PM
 #1217

I am an FPGA dude and stumbled upon SkeinCoin.  I just happen to have working Verilog code for Skein512 and SHA256D from other projects.  It seems like I could put together an FPGA miner in short order if I was inclined to do so.  Should I consider mining SkeinCoins?  I can't tell if folks here would like this or not.  It may swamp the network hashrate and frustrate CPU/GPU miners.  However, if I make it open source and it becomes widely adopted it will likely drive the price up so anyone who's been mining for a while will see their previously mined coins run up in value.  It could breath new life into SkeinCoin which may be welcome with it's latest woes.

So, SkeinCoin FPGA solution ... Good thing ... bad thing?

To quote a large sportsbrand:
Just Do it.

Skein FPGA solution, is progress. I would appreciate it as it would strengthen the network. Now most ppl are just bulk selling their GPU's and buy Gridseeds, which took at hit at the network hashrate for Skeinbased Coins.

(ps: Reorder the CGminer/POCLBM dev from SKC, is most of the time in #skeincoin on freenode. If someone could help you, it would be him)
Hey, I am subscribed to this thread too Smiley Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.

But but... hardware adders are there for a reason... i dunno... y.. u... no...
Yeah, and take more transistors, power and latency than XORs, let alone XNORs. Not reusable for reverse operation too.
gielbier
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June 19, 2014, 11:39:16 PM
 #1218

...
I'm offering a 10k skc bounty on an opensource FPGA implementation of the skein algo.

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smolen
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June 22, 2014, 01:29:37 PM
 #1219

Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.
They want to avoid algebraic attacks Smiley And addition is very cheap way to get high multiplicative complexity on commodity hardware.

Of course I gave you bad advice. Good one is way out of your price range.
reorder
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June 22, 2014, 01:35:41 PM
 #1220

Could easily help with some ranting about how academia hash designers choose addition over xor for no reason, making life harder for hardware implementors.
They want to avoid algebraic attacks Smiley And addition is very cheap way to get high multiplicative complexity on commodity hardware.
Don't they have rotates for that? Smiley Cheap in software, free in hardware.
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