Bitcoin Forum
May 09, 2024, 08:59:42 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 [18] 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 »
341  Bitcoin / Development & Technical Discussion / Re: Down to Earth explanation of SHA256? on: August 10, 2014, 09:04:43 PM
k is just a constant array that is defined as the first 32 bits of the fractional parts of the cube roots of the first 64 primes from 2 to 311:

Code:
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
   0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
   0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
   0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
   0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
   0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
   0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
   0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2

W is dynamically modified as follows:

1) W starts as an array or 64 32-bit words. Each chunk is copied into the first 16 words of this array. The rest of it doesn't matter, as it will get filled in the next step.
2) Elements 0-15 of w are filled. Let's fill in elements 16-63:
2a) Let's say we're filling in the i-th element. We calculate s0 as
Code:
(w[i-15]>>>7) xor (w[i-15]>>>18) xor (w[i-15] >>3)
2b) We calculate s1 as
Code:
(w[i-2]>>>17) xor (w[i-2]>>>19) xor (w[i-2]>>10)
2c) We set the i-th element to be
Code:
w[i-16] + s0 + w[i-7] + s1

>>> is a right rotation (elements pushed off the right are reinserted at the left)
>> is a right shift (no reinsertion at the left)
342  Alternate cryptocurrencies / Mining (Altcoins) / Re: tell me best coin to mine on: August 10, 2014, 07:41:19 PM
Please stop saying the same thing over and over again. We've already give you resources, that you appear not to have looked at.
343  Alternate cryptocurrencies / Mining (Altcoins) / Re: tell me best coin to mine on: August 10, 2014, 06:56:27 PM
kashifrazzaq20: There is no such thing as an easy-to-mine coin. Any variance gets lost as people flock to a given coin. I recommend giving Wafflepool a try.
344  Alternate cryptocurrencies / Mining (Altcoins) / Re: tell me best coin to mine on: August 10, 2014, 06:33:52 PM
how to mine i have scrypt tell me a pool...

Please read my post again. I mentioned a pool and instructions as to how to mine scrypt.
345  Alternate cryptocurrencies / Mining (Altcoins) / Re: tell me best coin to mine on: August 10, 2014, 06:30:24 PM
Right now try Jackpotcoin.

Why is it the most profitable?
346  Alternate cryptocurrencies / Mining (Altcoins) / Re: tell me best coin to mine on: August 10, 2014, 06:28:22 PM
You can use a profitability-switching pool such as WafflePool. You mine to it, it will mine up the most profitable coin it finds (using more sophisticated algorithms than one would usually use to pick a coin), convert it to Bitcoin, and pay you directly in Bitcoin.
347  Economy / Services / Re: Need a Mining Pool developed. on: August 10, 2014, 01:22:15 PM
I will consider it, and PM if interested. Thanks!
348  Economy / Services / Re: Need a Mining Pool developed. on: August 10, 2014, 01:15:17 PM
What do you mean, "second the request"? Are you also looking for a pool to be made? Or are you offering to make one of your own?
349  Economy / Auctions / Re: [AUCTION] 5 Chip Gridseed ASIC w/ PCIe Power Adapter on: August 10, 2014, 12:11:07 PM
When you say, "normal power supply", what spec/connector is needed? Is the original PSU provided by Gridseed not available?
350  Economy / Services / Re: Need a Mining Pool developed. on: August 10, 2014, 11:59:15 AM
Type of pool? Multipool or single pool? Need it from the ground up, or can an existing poolserver be used as a core to a custom UI and feature-set?
351  Other / Off-topic / Re: AVG free anti-virus on: August 10, 2014, 11:57:40 AM
No antivirus by itself is able to stop a keylogger or other virus with certainty. An adversary can always write a new one that doesn't match signatures, or trigger heuristic detection in clever ways. The only ways to prevent keyloggers are proper OS design combined with a careful attitude toward unknown files.
352  Economy / Auctions / Re: [AUCTION] 5 Chip Gridseed ASIC w/ PCIe Power Adapter on: August 10, 2014, 01:52:21 AM
Power and USB cables included? What hashrate and power draw?
353  Other / Beginners & Help / Re: Help configuring SGminer - Able to restart an 'overheated' card??? on: August 10, 2014, 01:50:19 AM
That is a result of the --temp-cutoff being default at 95 degrees. You may be able to use dynamic intensity and tuning based on temp with GPU settings (press the G key after cgminer/sgminer starts up).
354  Economy / Services / Re: Looking for a web developer - collaborate, rent on: August 09, 2014, 11:19:39 PM
Sent you a PM.
355  Other / Beginners & Help / Re: btc-e account hacked :( on: August 09, 2014, 08:17:58 PM
I Think people who studied hacking and all these coding should be registered on a database so the NSA can watch them, maybe we will have less hackers in the world

No, that would be an awful idea.
356  Bitcoin / Development & Technical Discussion / Re: Rule 30 automaton as hash function on: August 09, 2014, 06:18:46 PM
sorry for OT but i want ask to be crypromaster like you all . what should i learn before ?
i type of strong mental to learn.

You know it's off-topic, so why mention it here?
357  Other / Off-topic / Re: Ban the person above you (jokingly). on: August 09, 2014, 05:48:45 PM
Banned because he is quoting the posts above him.
Banned for not quoting the post above him. Boo ya, gandpa

Banned for being unable to spell "grandpa".
358  Bitcoin / Development & Technical Discussion / Re: How do they manage so many addresses? on: August 09, 2014, 12:17:43 PM
I could write up a Java-based program that does what you need. PM me if interested, with more specific details.
359  Bitcoin / Project Development / Re: Bitcoin / C# integration....? on: August 09, 2014, 12:24:51 AM
First Google result for "C# Bitcoin Library" is BitcoinLib, which integrates into the daemon. A BitcoinJ port is also available and includes documentation.
360  Economy / Services / Re: [FOR HIRE] Video Producer for High Impact, Powerful Short Videos on: August 09, 2014, 12:06:34 AM
Unfortunately, at this point, we are not able to do this, as our venture is not at that stage yet. I'll keep looking at this thread and return if we get to the point at which we would need a video. Thanks!
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 [18] 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!