@dedis/kyber/curve/nist/curve.js

A typescript implementation of Kyber interfaces

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
// tslint:disable:no-bitwise
const bn_js_1 = __importDefault(require("bn.js"));
const elliptic_1 = __importDefault(require("elliptic"));
const point_1 = __importDefault(require("./point"));
const scalar_1 = __importDefault(require("./scalar"));
class Weierstrass {
    constructor(config) {
        const { name, bitSize, gx, gy, p, a, b, n } = config;
        this.name = name;
        const toBN = (bt) => new bn_js_1.default(bt, 16, "le");
        this.curve = new elliptic_1.default.curve.short({
            a: toBN(a),
            b: toBN(b),
            g: [new bn_js_1.default(gx, 16, "le"), new bn_js_1.default(gy, 16, "le")],
            n,
            p: toBN(p),
        });
        this.bitSize = bitSize;
        this.redN = bn_js_1.default.red(n);
    }
    coordLen() {
        return (this.bitSize + 7) >> 3;
    }
    /** @inheritdoc */
    scalarLen() {
        return (this.curve.n.bitLength() + 7) >> 3;
    }
    /** @inheritdoc */
    scalar() {
        return new scalar_1.default(this, this.redN);
    }
    /** @inheritdoc */
    pointLen() {
        // ANSI X9.62: 1 header byte plus 2 coords
        return this.coordLen() * 2 + 1;
    }
    /** @inheritdoc */
    point() {
        return new point_1.default(this);
    }
    /**
     * Get the name of the curve
     * @returns the name
     */
    string() {
        return this.name;
    }
}
exports.default = Weierstrass;