navio-blsct/dist/rangeProof.js

TypeScript bindings for the `libblsct` library used by the [Navio](https://nav.io/) blockchain to construct confidential transactions based on the BLS12-381 curve.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.RangeProof = void 0;
const blsct_1 = require("./blsct");
const amountRecoveryRes_1 = require("./amountRecoveryRes");
const managedObj_1 = require("./managedObj");
const point_1 = require("./point");
const scalar_1 = require("./scalar");
const tokenId_1 = require("./tokenId");
class RangeProof extends managedObj_1.ManagedObj {
    constructor(obj) {
        super(obj);
    }
    static generate(amounts, nonce, msg, tokenId) {
        tokenId = tokenId ?? tokenId_1.TokenId.default();
        const vec = (0, blsct_1.createUint64Vec)();
        for (const amount of amounts) {
            (0, blsct_1.addToUint64Vec)(vec, amount);
        }
        const rv = (0, blsct_1.buildRangeProof)(vec, nonce.value(), msg, tokenId.value());
        (0, blsct_1.freeUint64Vec)(vec);
        if (rv.result !== 0) {
            (0, blsct_1.freeObj)(rv);
            console.log(`exception 1`);
            throw new Error(`Building range proof failed. Error code = ${rv.result}`);
        }
        const x = RangeProof.fromObjAndSize(rv.value, rv.value_size);
        (0, blsct_1.freeObj)(rv);
        return x;
    }
    verifyProofs(proofs) {
        const vec = (0, blsct_1.createRangeProofVec)();
        for (const proof of proofs) {
            (0, blsct_1.addRangeProofToVec)(vec, proof.size(), proof.value());
        }
        const rv = (0, blsct_1.verifyRangeProofs)(vec);
        if (rv.result !== 0) {
            (0, blsct_1.freeObj)(rv);
            throw new Error(`Verifying range proofs failed. Error code = ${rv.result}`);
        }
        (0, blsct_1.freeRangeProofVec)(vec);
        return rv.value;
    }
    recoverAmounts(reqs) {
        const reqVec = (0, blsct_1.createAmountRecoveryReqVec)();
        for (const req of reqs) {
            const blsctReq = (0, blsct_1.genAmountRecoveryReq)(req.rangeProof.value(), req.rangeProof.size(), req.nonce.value());
            (0, blsct_1.addToAmountRecoveryReqVec)(reqVec, blsctReq);
        }
        const rv = (0, blsct_1.recoverAmount)(reqVec);
        (0, blsct_1.freeAmountRecoveryReqVec)(reqVec);
        if (rv.result !== 0) {
            (0, blsct_1.freeAmountsRetVal)(rv);
            throw new Error(`Recovering amount failed. Error code = ${rv.result}`);
        }
        let results = [];
        const size = (0, blsct_1.getAmountRecoveryResultSize)(rv.value);
        for (let i = 0; i < size; ++i) {
            const isSucc = (0, blsct_1.getAmountRecoveryResultIsSucc)(rv.value, i);
            const amount = (0, blsct_1.getAmountRecoveryResultAmount)(rv.value, i);
            const msg = (0, blsct_1.getAmountRecoveryResultMsg)(rv.value, i);
            const x = new amountRecoveryRes_1.AmountRecoveryRes(isSucc, amount, msg);
            results.push(x);
        }
        (0, blsct_1.freeAmountsRetVal)(rv);
        return results;
    }
    value() {
        return (0, blsct_1.castToRangeProof)(this.obj);
    }
    serialize() {
        return (0, blsct_1.serializeRangeProof)(this.value(), this.size());
    }
    static deserialize(hex) {
        return RangeProof._deserialize(hex, blsct_1.deserializeRangeProof);
    }
    get_A() {
        const obj = (0, blsct_1.getRangeProof_A)(this.value(), this.size());
        return point_1.Point.fromObj(obj);
    }
    get_A_wip() {
        const obj = (0, blsct_1.getRangeProof_A_wip)(this.value(), this.size());
        return point_1.Point.fromObj(obj);
    }
    get_B() {
        const obj = (0, blsct_1.getRangeProof_B)(this.value(), this.size());
        return point_1.Point.fromObj(obj);
    }
    get_r_prime() {
        const obj = (0, blsct_1.getRangeProof_r_prime)(this.value(), this.size());
        return scalar_1.Scalar.fromObj(obj);
    }
    get_s_prime() {
        const obj = (0, blsct_1.getRangeProof_s_prime)(this.value(), this.size());
        return scalar_1.Scalar.fromObj(obj);
    }
    get_delta_prime() {
        const obj = (0, blsct_1.getRangeProof_delta_prime)(this.value(), this.size());
        return scalar_1.Scalar.fromObj(obj);
    }
    get_alpha_hat() {
        const obj = (0, blsct_1.getRangeProof_alpha_hat)(this.value(), this.size());
        return scalar_1.Scalar.fromObj(obj);
    }
    get_t_aux() {
        const obj = (0, blsct_1.getRangeProof_t_aux)(this.value(), this.size());
        return scalar_1.Scalar.fromObj(obj);
    }
}
exports.RangeProof = RangeProof;