How to use tiny-secp256k1 - 10 common examples
To help you get started, we’ve selected a few tiny-secp256k1 examples, based on popular ways it is used in public projects.
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bitcoinjs / bitcoinjs-lib / test / integration / stealth.js View on Github 
function stealthDualSend (e, R, Q) {
const eQ = ecc.pointMultiply(Q, e) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const Rc = ecc.pointAddScalar(R, c)
const vG = bitcoin.ECPair.fromPublicKey(Rc)
return vG
}function stealthSend (e, Q) {
const eQ = ecc.pointMultiply(Q, e, true) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const Qc = ecc.pointAddScalar(Q, c)
const vG = bitcoin.ECPair.fromPublicKey(Qc)
return vG
}function stealthDualScan (d, R, eG) {
const eQ = ecc.pointMultiply(eG, d) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const Rc = ecc.pointAddScalar(R, c)
const vG = bitcoin.ECPair.fromPublicKey(Rc)
return vG
}function stealthDualReceive (d, r, eG) {
const eQ = ecc.pointMultiply(eG, d) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const rc = ecc.privateAdd(r, c)
const v = bitcoin.ECPair.fromPrivateKey(rc)
return v
}function stealthReceive (d, eG) {
const eQ = ecc.pointMultiply(eG, d) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const dc = ecc.privateAdd(d, c)
const v = bitcoin.ECPair.fromPrivateKey(dc)
return v
}function stealthDualReceive (d, r, eG) {
const eQ = ecc.pointMultiply(eG, d) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const rc = ecc.privateAdd(r, c)
const v = bitcoin.ECPair.fromPrivateKey(rc)
return v
}function stealthDualSend (e, R, Q) {
const eQ = ecc.pointMultiply(Q, e) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const Rc = ecc.pointAddScalar(R, c)
const vG = bitcoin.ECPair.fromPublicKey(Rc)
return vG
}function stealthSend (e, Q) {
const eQ = ecc.pointMultiply(Q, e, true) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const Qc = ecc.pointAddScalar(Q, c)
const vG = bitcoin.ECPair.fromPublicKey(Qc)
return vG
}function stealthReceive (d, eG) {
const eQ = ecc.pointMultiply(eG, d) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const dc = ecc.privateAdd(d, c)
const v = bitcoin.ECPair.fromPrivateKey(dc)
return v
}function stealthRecoverLeaked (v, e, Q) {
const eQ = ecc.pointMultiply(Q, e) // shared secret
const c = bitcoin.crypto.sha256(eQ)
const vc = ecc.privateSub(v, c)
const d = bitcoin.ECPair.fromPrivateKey(vc)
return d
}
