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for r, dont use bigint but hex string

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callebtc 2022-11-02 23:43:37 +01:00 committed by dni ⚡
parent 67d0249d19
commit c0f0421f8a
2 changed files with 13 additions and 5 deletions
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8
lnbits/extensions/cashu/static/js/dhke.js
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@ -21,14 +21,16 @@ async function hashToCurve(secretMessage) {
async function step1Alice(secretMessage) { async function step1Alice(secretMessage) {
const Y = await hashToCurve(secretMessage) const Y = await hashToCurve(secretMessage)
const r = bytesToNumber(nobleSecp256k1.utils.randomPrivateKey()) const rpk = nobleSecp256k1.utils.randomPrivateKey()
const r = bytesToNumber(rpk)
const P = nobleSecp256k1.Point.fromPrivateKey(r) const P = nobleSecp256k1.Point.fromPrivateKey(r)
const B_ = Y.add(P) const B_ = Y.add(P)
return {B_: B_.toHex(true), r} return {B_: B_.toHex(true), r: nobleSecp256k1.utils.bytesToHex(rpk)}
} }
function step3Alice(C_, r, A) { function step3Alice(C_, r, A) {
const rInt = BigInt(r) // const rInt = BigInt(r)
const rInt = bytesToNumber(r)
const C = C_.subtract(A.multiply(rInt)) const C = C_.subtract(A.multiply(rInt))
return C return C
} }

10
lnbits/extensions/cashu/templates/cashu/wallet.html
View File

@ -1060,7 +1060,11 @@ page_container %}
promiseToProof: function (id, amount, C_hex, secret, r) { promiseToProof: function (id, amount, C_hex, secret, r) {
const C_ = nobleSecp256k1.Point.fromHex(C_hex) const C_ = nobleSecp256k1.Point.fromHex(C_hex)
const A = this.keys[amount] const A = this.keys[amount]
const C = step3Alice(C_, r, nobleSecp256k1.Point.fromHex(A)) const C = step3Alice(
C_,
nobleSecp256k1.utils.hexToBytes(r),
nobleSecp256k1.Point.fromHex(A)
)
return { return {
id, id,
amount, amount,
@ -1226,7 +1230,9 @@ page_container %}
const rs = [] const rs = []
for (let i = 0; i < amounts.length; i++) { for (let i = 0; i < amounts.length; i++) {
const secret = nobleSecp256k1.utils.randomBytes(32) const secret = nobleSecp256k1.utils.randomBytes(32)
// const secret = nobleSecp256k1.utils.hexToBytes('0000000000000000000000000000000000000000000000000000000000000003') // const secret = nobleSecp256k1.utils.hexToBytes(
// '0000000000000000000000000000000000000000000000000000000000000000'
// )
// todo: base64Url // todo: base64Url
const encodedSecret = uint8ToBase64.encode(secret) const encodedSecret = uint8ToBase64.encode(secret)
secrets.push(encodedSecret) secrets.push(encodedSecret)