1 files changed, 0 insertions, 190 deletions
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/js/ethash.js b/Godeps/_workspace/src/github.com/ethereum/ethash/js/ethash.js
deleted file mode 100644
index bec1284f6..000000000
--- a/Godeps/_workspace/src/github.com/ethereum/ethash/js/ethash.js
+++ /dev/null
@@ -1,190 +0,0 @@
-// ethash.js
-// Tim Hughes <tim@twistedfury.com>
-// Revision 19
-
-/*jslint node: true, shadow:true */
-"use strict";
-
-var Keccak = require('./keccak');
-var util = require('./util');
-
-// 32-bit unsigned modulo
-function mod32(x, n)
-{
-	return (x>>>0) % (n>>>0);
-}
-
-function fnv(x, y)
-{
-	// js integer multiply by 0x01000193 will lose precision
-	return ((x*0x01000000 | 0) + (x*0x193 | 0)) ^ y;	
-}
-
-function computeCache(params, seedWords)
-{
-	var cache = new Uint32Array(params.cacheSize >> 2);
-	var cacheNodeCount = params.cacheSize >> 6;
-
-	// Initialize cache
-	var keccak = new Keccak();
-	keccak.digestWords(cache, 0, 16, seedWords, 0, seedWords.length);
-	for (var n = 1; n < cacheNodeCount; ++n)
-	{
-		keccak.digestWords(cache, n<<4, 16, cache, (n-1)<<4, 16);
-	}
-	
-	var tmp = new Uint32Array(16);
-	
-	// Do randmemohash passes
-	for (var r = 0; r < params.cacheRounds; ++r)
-	{
-		for (var n = 0; n < cacheNodeCount; ++n)
-		{
-			var p0 = mod32(n + cacheNodeCount - 1, cacheNodeCount) << 4;
-			var p1 = mod32(cache[n<<4|0], cacheNodeCount) << 4;
-			
-			for (var w = 0; w < 16; w=(w+1)|0)
-			{
-				tmp[w] = cache[p0 | w] ^ cache[p1 | w];
-			}
-			
-			keccak.digestWords(cache, n<<4, 16, tmp, 0, tmp.length);
-		}
-	}	
-	return cache;
-}
-
-function computeDagNode(o_node, params, cache, keccak, nodeIndex)
-{
-	var cacheNodeCount = params.cacheSize >> 6;
-	var dagParents = params.dagParents;
-	
-	var c = (nodeIndex % cacheNodeCount) << 4;
-	var mix = o_node;
-	for (var w = 0; w < 16; ++w)
-	{
-		mix[w] = cache[c|w];
-	}
-	mix[0] ^= nodeIndex;
-	keccak.digestWords(mix, 0, 16, mix, 0, 16);
-	
-	for (var p = 0; p < dagParents; ++p)
-	{
-		// compute cache node (word) index
-		c = mod32(fnv(nodeIndex ^ p, mix[p&15]), cacheNodeCount) << 4;
-		
-		for (var w = 0; w < 16; ++w)
-		{
-			mix[w] = fnv(mix[w], cache[c|w]);
-		}
-	}
-	
-	keccak.digestWords(mix, 0, 16, mix, 0, 16);
-}
-
-function computeHashInner(mix, params, cache, keccak, tempNode)
-{
-	var mixParents = params.mixParents|0;
-	var mixWordCount = params.mixSize >> 2;
-	var mixNodeCount = mixWordCount >> 4;
-	var dagPageCount = (params.dagSize / params.mixSize) >> 0;
-	
-	// grab initial first word
-	var s0 = mix[0];
-	
-	// initialise mix from initial 64 bytes
-	for (var w = 16; w < mixWordCount; ++w)
-	{
-		mix[w] = mix[w & 15];
-	}
-	
-	for (var a = 0; a < mixParents; ++a)
-	{
-		var p = mod32(fnv(s0 ^ a, mix[a & (mixWordCount-1)]), dagPageCount);
-		var d = (p * mixNodeCount)|0;
-		
-		for (var n = 0, w = 0; n < mixNodeCount; ++n, w += 16)
-		{
-			computeDagNode(tempNode, params, cache, keccak, (d + n)|0);
-			
-			for (var v = 0; v < 16; ++v)
-			{
-				mix[w|v] = fnv(mix[w|v], tempNode[v]);
-			}
-		}
-	}
-}
-
-function convertSeed(seed)
-{
-	// todo, reconcile with spec, byte ordering?
-	// todo, big-endian conversion
-	var newSeed = util.toWords(seed);
-	if (newSeed === null)
-		throw Error("Invalid seed '" + seed + "'");
-	return newSeed;
-}
-
-exports.defaultParams = function()
-{
-	return {
-		cacheSize: 1048384,
-		cacheRounds: 3,
-		dagSize: 1073739904,
-		dagParents: 256,
-		mixSize: 128,
-		mixParents: 64,
-	};
-};
-
-exports.Ethash = function(params, seed)
-{
-	// precompute cache and related values
-	seed = convertSeed(seed);
-	var cache = computeCache(params, seed);
-	
-	// preallocate buffers/etc
-	var initBuf = new ArrayBuffer(96);
-	var initBytes = new Uint8Array(initBuf);
-	var initWords = new Uint32Array(initBuf);
-	var mixWords = new Uint32Array(params.mixSize / 4);
-	var tempNode = new Uint32Array(16);
-	var keccak = new Keccak();
-	
-	var retWords = new Uint32Array(8);
-	var retBytes = new Uint8Array(retWords.buffer); // supposedly read-only
-	
-	this.hash = function(header, nonce)
-	{
-		// compute initial hash
-		initBytes.set(header, 0);
-		initBytes.set(nonce, 32);
-		keccak.digestWords(initWords, 0, 16, initWords, 0, 8 + nonce.length/4);
-		
-		// compute mix
-		for (var i = 0; i != 16; ++i)
-		{
-			mixWords[i] = initWords[i];
-		}
-		computeHashInner(mixWords, params, cache, keccak, tempNode);
-		
-		// compress mix and append to initWords
-		for (var i = 0; i != mixWords.length; i += 4)
-		{
-			initWords[16 + i/4] = fnv(fnv(fnv(mixWords[i], mixWords[i+1]), mixWords[i+2]), mixWords[i+3]);
-		}
-			
-		// final Keccak hashes
-		keccak.digestWords(retWords, 0, 8, initWords, 0, 24); // Keccak-256(s + cmix)
-		return retBytes;
-	};
-	
-	this.cacheDigest = function()
-	{
-		return keccak.digest(32, new Uint8Array(cache.buffer));
-	};
-};
-
-
-
-