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stealth: d is not involved in the receiver private key

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Daniel Cousens 2016-12-10 14:33:51 +11:00 • committed by Daniel Cousens
parent b4062d56d1
commit 6f47bc4d70
1 changed files with 6 additions and 6 deletions
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12
test/integration/stealth.js
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@ -37,30 +37,30 @@ function stealthRecoverLeaked (v, e, Q) {
return d return d
} }
// vG = (rG * (dG * sha256(e * dG)G)) // vG = (rG * sha256(e * dG)G)
function stealthDualSend (e, R, Q) { function stealthDualSend (e, R, Q) {
var eQ = Q.multiply(e) // shared secret var eQ = Q.multiply(e) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded())) var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
var cG = G.multiply(c) var cG = G.multiply(c)
var vG = new bitcoin.ECPair(null, R.add(Q.add(cG))) var vG = new bitcoin.ECPair(null, R.add(cG))
return vG return vG
} }
// vG = (rG * (d + sha256(eG * d))G) // vG = (rG * sha256(eG * d)G)
function stealthDualScan (d, R, eG) { function stealthDualScan (d, R, eG) {
var eQ = eG.multiply(d) // shared secret var eQ = eG.multiply(d) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded())) var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
var vG = new bitcoin.ECPair(null, R.add(G.multiply(d.add(c).mod(n)))) var vG = new bitcoin.ECPair(null, R.add(G.multiply(c)))
return vG return vG
} }
// v = (r + d + sha256(eG * d)) // v = (r + sha256(eG * d))
function stealthDualReceive (d, r, eG) { function stealthDualReceive (d, r, eG) {
var eQ = eG.multiply(d) // shared secret var eQ = eG.multiply(d) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded())) var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
var v = new bitcoin.ECPair(r.add(d).add(c).mod(n)) var v = new bitcoin.ECPair(r.add(c).mod(n))
return v return v
} }