@stellot/crypto/lib/commonjs/blindSignature/SignerSession.js

Crypto libraries for front and backend

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_1 = require("./index");
const utils_1 = require("./utils");
class SignerSession {
    constructor(secretKey) {
        const keypair = index_1.ed25519.keyFromSecret(secretKey);
        this.x = keypair.priv();
        this.P = keypair.pub();
        this.k = utils_1.randomScalar();
        this.R = index_1.ed25519.curve.g.mul(this.k);
    }
    publicKey() {
        return this.P;
    }
    publicNonce() {
        return this.R;
    }
    sign(challenge) {
        return this.x
            .mul(challenge)
            .add(this.k)
            .umod(index_1.ed25519.curve.n);
    }
}
exports.default = SignerSession;