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edwards: affine Point removal tests

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This commit is contained in:
Paul Miller 2023-01-24 04:37:53 +00:00
parent a49f0d266e
commit 17e5be5f1b
No known key found for this signature in database
GPG Key ID: 697079DA6878B89B
12 changed files with 123 additions and 112 deletions
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16
benchmark/index.js
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@ -96,10 +96,10 @@ export const CURVES = {
old_secp.recoverPublicKey(msg, new old_secp.Signature(sig.r, sig.s), sig.recovery), old_secp.recoverPublicKey(msg, new old_secp.Signature(sig.r, sig.s), sig.recovery),
secp256k1: ({ sig, msg }) => sig.recoverPublicKey(msg), secp256k1: ({ sig, msg }) => sig.recoverPublicKey(msg),
}, },
hashToCurve: { // hashToCurve: {
samples: 500, // samples: 500,
noble: () => secp256k1.Point.hashToCurve('abcd'), // noble: () => secp256k1.Point.hashToCurve('abcd'),
}, // },
}, },
ed25519: { ed25519: {
data: () => { data: () => {
@ -128,10 +128,10 @@ export const CURVES = {
old: ({ sig, msg, pub }) => noble_ed25519.sync.verify(sig, msg, pub), old: ({ sig, msg, pub }) => noble_ed25519.sync.verify(sig, msg, pub),
noble: ({ sig, msg, pub }) => ed25519.verify(sig, msg, pub), noble: ({ sig, msg, pub }) => ed25519.verify(sig, msg, pub),
}, },
hashToCurve: { // hashToCurve: {
samples: 500, // samples: 500,
noble: () => ed25519.Point.hashToCurve('abcd'), // noble: () => ed25519.Point.hashToCurve('abcd'),
}, // },
}, },
ed448: { ed448: {
data: () => { data: () => {

5
src/abstract/edwards.ts
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@ -61,7 +61,10 @@ function validateOpts(curve: CurveType) {
} }
// 2d point in XY coords // 2d point in XY coords
export interface AffinePoint { x: bigint; y: bigint }; export interface AffinePoint {
x: bigint;
y: bigint;
}
// Instance of Extended Point with coordinates in X, Y, Z, T // Instance of Extended Point with coordinates in X, Y, Z, T
export interface ExtendedPointType extends Group<ExtendedPointType> { export interface ExtendedPointType extends Group<ExtendedPointType> {

18
src/abstract/hash-to-curve.ts
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@ -179,13 +179,16 @@ export function isogenyMap<T, F extends mod.Field<T>>(field: F, map: [T[], T[],
} }
export interface Point<T> extends Group<Point<T>> { export interface Point<T> extends Group<Point<T>> {
readonly x: T; // readonly x: T;
readonly y: T; // readonly y: T;
add(rhs: Point<T>): Point<T>;
toAffine(iz?: bigint): { x: T; y: T };
clearCofactor(): Point<T>; clearCofactor(): Point<T>;
} }
export interface PointConstructor<T> extends GroupConstructor<Point<T>> { export interface PointConstructor<T> extends GroupConstructor<Point<T>> {
new (x: T, y: T): Point<T>; // new (x: T, y: T): Point<T>;
fromAffine(ap: { x: T; y: T }): Point<T>;
} }
export type MapToCurve<T> = (scalar: bigint[]) => { x: T; y: T }; export type MapToCurve<T> = (scalar: bigint[]) => { x: T; y: T };
@ -207,9 +210,9 @@ export function hashToCurve<T>(Point: PointConstructor<T>, mapToCurve: MapToCurv
if (!mapToCurve) throw new Error('CURVE.mapToCurve() has not been defined'); if (!mapToCurve) throw new Error('CURVE.mapToCurve() has not been defined');
msg = ut.ensureBytes(msg); msg = ut.ensureBytes(msg);
const u = hash_to_field(msg, 2, { ...def, DST: def.DST, ...options } as Opts); const u = hash_to_field(msg, 2, { ...def, DST: def.DST, ...options } as Opts);
const { x: x0, y: y0 } = mapToCurve(u[0]); return Point.fromAffine(mapToCurve(u[0]))
const { x: x1, y: y1 } = mapToCurve(u[1]); .add(Point.fromAffine(mapToCurve(u[1])))
return new Point(x0, y0).add(new Point(x1, y1)).clearCofactor(); .clearCofactor();
}, },
// https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-16#section-3 // https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-16#section-3
@ -217,8 +220,7 @@ export function hashToCurve<T>(Point: PointConstructor<T>, mapToCurve: MapToCurv
if (!mapToCurve) throw new Error('CURVE.mapToCurve() has not been defined'); if (!mapToCurve) throw new Error('CURVE.mapToCurve() has not been defined');
msg = ut.ensureBytes(msg); msg = ut.ensureBytes(msg);
const u = hash_to_field(msg, 1, { ...def, DST: def.encodeDST, ...options } as Opts); const u = hash_to_field(msg, 1, { ...def, DST: def.encodeDST, ...options } as Opts);
const { x, y } = mapToCurve(u[0]); return Point.fromAffine(mapToCurve(u[0])).clearCofactor();
return new Point(x, y).clearCofactor();
}, },
}; };
} }

11
src/abstract/weierstrass.ts
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@ -137,10 +137,12 @@ export interface PointType<T> extends Group<PointType<T>> {
assertValidity(): void; assertValidity(): void;
multiplyAndAddUnsafe(Q: PointType<T>, a: bigint, b: bigint): PointType<T> | undefined; multiplyAndAddUnsafe(Q: PointType<T>, a: bigint, b: bigint): PointType<T> | undefined;
clearCofactor(): PointType<T>; clearCofactor(): PointType<T>;
toAffine(iz?: bigint): { x: T; y: T };
} }
// Static methods for 2d XY points // Static methods for 2d XY points
export interface PointConstructor<T> extends GroupConstructor<PointType<T>> { export interface PointConstructor<T> extends GroupConstructor<PointType<T>> {
new (x: T, y: T): PointType<T>; new (x: T, y: T): PointType<T>;
fromAffine(ap: { x: T; y: T }): PointType<T>;
fromHex(hex: Hex): PointType<T>; fromHex(hex: Hex): PointType<T>;
fromPrivateKey(privateKey: PrivKey): PointType<T>; fromPrivateKey(privateKey: PrivKey): PointType<T>;
} }
@ -546,6 +548,12 @@ export function weierstrassPoints<T>(opts: CurvePointsType<T>) {
* Identity point aka point at infinity. p - p = zero_p; p + zero_p = p * Identity point aka point at infinity. p - p = zero_p; p + zero_p = p
*/ */
static ZERO: Point = new Point(Fp.ZERO, Fp.ZERO); static ZERO: Point = new Point(Fp.ZERO, Fp.ZERO);
static fromAffine(ap: { x: T; y: T }) {
return new Point(ap.x, ap.y);
}
toAffine(iz?: bigint) {
return { x: this.x, y: this.y };
}
// We calculate precomputes for elliptic curve point multiplication // We calculate precomputes for elliptic curve point multiplication
// using windowed method. This specifies window size and // using windowed method. This specifies window size and
@ -1124,7 +1132,8 @@ export function weierstrass(curveDef: CurveType): CurveFn {
// Also it can be bigger for P224 + SHA256 // Also it can be bigger for P224 + SHA256
function prepSig(msgHash: Hex, privateKey: PrivKey, opts = defaultSigOpts) { function prepSig(msgHash: Hex, privateKey: PrivKey, opts = defaultSigOpts) {
if (msgHash == null) throw new Error(`sign: expected valid message hash, not "${msgHash}"`); if (msgHash == null) throw new Error(`sign: expected valid message hash, not "${msgHash}"`);
if (['recovered', 'canonical'].some(k => k in opts)) // Ban legacy options if (['recovered', 'canonical'].some((k) => k in opts))
// Ban legacy options
throw new Error('sign() legacy options not supported'); throw new Error('sign() legacy options not supported');
let { lowS } = opts; // generates low-s sigs by default let { lowS } = opts; // generates low-s sigs by default
if (lowS == null) lowS = true; // RFC6979 3.2: we skip step A, because if (lowS == null) lowS = true; // RFC6979 3.2: we skip step A, because

2
src/ed25519.ts
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@ -210,7 +210,7 @@ export const ed25519ph = twistedEdwards({
}); });
const { hashToCurve, encodeToCurve } = htf.hashToCurve( const { hashToCurve, encodeToCurve } = htf.hashToCurve(
ed25519.Point, ed25519.ExtendedPoint,
(scalars: bigint[]) => map_to_curve_elligator2_edwards25519(scalars[0]), (scalars: bigint[]) => map_to_curve_elligator2_edwards25519(scalars[0]),
{ {
DST: 'edwards25519_XMD:SHA-512_ELL2_RO_', DST: 'edwards25519_XMD:SHA-512_ELL2_RO_',

2
src/ed448.ts
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@ -197,7 +197,7 @@ export const ed448 = twistedEdwards(ED448_DEF);
export const ed448ph = twistedEdwards({ ...ED448_DEF, preHash: shake256_64 }); export const ed448ph = twistedEdwards({ ...ED448_DEF, preHash: shake256_64 });
const { hashToCurve, encodeToCurve } = htf.hashToCurve( const { hashToCurve, encodeToCurve } = htf.hashToCurve(
ed448.Point, ed448.ExtendedPoint,
(scalars: bigint[]) => map_to_curve_elligator2_edwards448(scalars[0]), (scalars: bigint[]) => map_to_curve_elligator2_edwards448(scalars[0]),
{ {
DST: 'edwards448_XOF:SHAKE256_ELL2_RO_', DST: 'edwards448_XOF:SHAKE256_ELL2_RO_',

2
src/jubjub.ts
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@ -39,7 +39,7 @@ export function groupHash(tag: Uint8Array, personalization: Uint8Array) {
h.update(GH_FIRST_BLOCK); h.update(GH_FIRST_BLOCK);
h.update(tag); h.update(tag);
// NOTE: returns ExtendedPoint, in case it will be multiplied later // NOTE: returns ExtendedPoint, in case it will be multiplied later
let p = jubjub.ExtendedPoint.fromAffine(jubjub.Point.fromHex(h.digest())); let p = jubjub.ExtendedPoint.fromAffine(jubjub.ExtendedPoint.fromHex(h.digest()));
// NOTE: cannot replace with isSmallOrder, returns Point*8 // NOTE: cannot replace with isSmallOrder, returns Point*8
p = p.multiply(jubjub.CURVE.h); p = p.multiply(jubjub.CURVE.h);
if (p.equals(jubjub.ExtendedPoint.ZERO)) throw new Error('Point has small order'); if (p.equals(jubjub.ExtendedPoint.ZERO)) throw new Error('Point has small order');

40
test/basic.test.js
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@ -313,12 +313,12 @@ const NUM_RUNS = 5;
const getXY = (p) => ({ x: p.x, y: p.y }); const getXY = (p) => ({ x: p.x, y: p.y });
function equal(a, b, comment) { function equal(a, b, comment) {
deepStrictEqual(a.equals(b), true, 'eq(${comment})'); deepStrictEqual(a.equals(b), true, `eq(${comment})`);
if (a.toAffine && b.toAffine) { if (a.toAffine && b.toAffine) {
deepStrictEqual(getXY(a.toAffine()), getXY(b.toAffine()), 'eqToAffine(${comment})'); deepStrictEqual(getXY(a.toAffine()), getXY(b.toAffine()), `eqToAffine(${comment})`);
} else if (!a.toAffine && !b.toAffine) { } else if (!a.toAffine && !b.toAffine) {
// Already affine // Already affine
deepStrictEqual(getXY(a), getXY(b), 'eqAffine(${comment})'); deepStrictEqual(getXY(a), getXY(b), `eqAffine(${comment})`);
} else throw new Error('Different point types'); } else throw new Error('Different point types');
} }
@ -354,8 +354,8 @@ for (const name in CURVES) {
equal(G[0].negate(), G[0], '-0 = 0'); equal(G[0].negate(), G[0], '-0 = 0');
for (let i = 0; i < G.length; i++) { for (let i = 0; i < G.length; i++) {
const p = G[i]; const p = G[i];
equal(p, p.add(G[0]), '${i}*G + 0 = ${i}*G'); equal(p, p.add(G[0]), `${i}*G + 0 = ${i}*G`);
equal(G[0].multiply(BigInt(i + 1)), G[0], '${i + 1}*0 = 0'); equal(G[0].multiply(BigInt(i + 1)), G[0], `${i + 1}*0 = 0`);
} }
}); });
should('(one)', () => { should('(one)', () => {
@ -447,8 +447,8 @@ for (const name in CURVES) {
throws(() => G[1][op](new Uint8Array([0])), 'ui8a([0])'); throws(() => G[1][op](new Uint8Array([0])), 'ui8a([0])');
throws(() => G[1][op](new Uint8Array([1])), 'ui8a([1])'); throws(() => G[1][op](new Uint8Array([1])), 'ui8a([1])');
throws(() => G[1][op](new Uint8Array(4096).fill(1)), 'ui8a(4096*[1])'); throws(() => G[1][op](new Uint8Array(4096).fill(1)), 'ui8a(4096*[1])');
if (G[1].toAffine) throws(() => G[1][op](C.Point.BASE), 'Point ${op} ${pointName}'); // if (G[1].toAffine) throws(() => G[1][op](C.Point.BASE), `Point ${op} ${pointName}`);
throws(() => G[1][op](o.BASE), '${op}/other curve point'); throws(() => G[1][op](o.BASE), `${op}/other curve point`);
}); });
}); });
} }
@ -468,7 +468,7 @@ for (const name in CURVES) {
throws(() => G[1].equals(new Uint8Array([0])), 'ui8a([0])'); throws(() => G[1].equals(new Uint8Array([0])), 'ui8a([0])');
throws(() => G[1].equals(new Uint8Array([1])), 'ui8a([1])'); throws(() => G[1].equals(new Uint8Array([1])), 'ui8a([1])');
throws(() => G[1].equals(new Uint8Array(4096).fill(1)), 'ui8a(4096*[1])'); throws(() => G[1].equals(new Uint8Array(4096).fill(1)), 'ui8a(4096*[1])');
if (G[1].toAffine) throws(() => G[1].equals(C.Point.BASE), 'Point.equals(${pointName})'); // if (G[1].toAffine) throws(() => G[1].equals(C.Point.BASE), 'Point.equals(${pointName})');
throws(() => G[1].equals(o.BASE), 'other curve point'); throws(() => G[1].equals(o.BASE), 'other curve point');
}); });
@ -497,18 +497,18 @@ for (const name in CURVES) {
}); });
} }
// Complex point (Extended/Jacobian/Projective?) // Complex point (Extended/Jacobian/Projective?)
if (p.BASE.toAffine) { // if (p.BASE.toAffine && C.Point) {
should('toAffine()', () => { // should('toAffine()', () => {
equal(p.ZERO.toAffine(), C.Point.ZERO, '0 = 0'); // equal(p.ZERO.toAffine(), C.Point.ZERO, '0 = 0');
equal(p.BASE.toAffine(), C.Point.BASE, '1 = 1'); // equal(p.BASE.toAffine(), C.Point.BASE, '1 = 1');
}); // });
} // }
if (p.fromAffine) { // if (p.fromAffine && C.Point) {
should('fromAffine()', () => { // should('fromAffine()', () => {
equal(p.ZERO, p.fromAffine(C.Point.ZERO), '0 = 0'); // equal(p.ZERO, p.fromAffine(C.Point.ZERO), '0 = 0');
equal(p.BASE, p.fromAffine(C.Point.BASE), '1 = 1'); // equal(p.BASE, p.fromAffine(C.Point.BASE), '1 = 1');
}); // });
} // }
// toHex/fromHex (if available) // toHex/fromHex (if available)
if (p.fromHex && p.BASE.toHex) { if (p.fromHex && p.BASE.toHex) {
should('fromHex(toHex()) roundtrip', () => { should('fromHex(toHex()) roundtrip', () => {

58
test/ed25519.test.js
View File

@ -20,6 +20,7 @@ import { default as x25519vectors } from './wycheproof/x25519_test.json' assert
describe('ed25519', () => { describe('ed25519', () => {
const ed = ed25519; const ed = ed25519;
const hex = bytesToHex; const hex = bytesToHex;
const Point = ed.ExtendedPoint;
function to32Bytes(numOrStr) { function to32Bytes(numOrStr) {
let hex = typeof numOrStr === 'string' ? numOrStr : numOrStr.toString(16); let hex = typeof numOrStr === 'string' ? numOrStr : numOrStr.toString(16);
@ -114,56 +115,46 @@ describe('ed25519', () => {
deepStrictEqual(ed.verify(signature, wrongMsg, publicKey), false); deepStrictEqual(ed.verify(signature, wrongMsg, publicKey), false);
}); });
}); });
describe('BASE_POINT.multiply()', () => {
// https://xmr.llcoins.net/addresstests.html // https://xmr.llcoins.net/addresstests.html
should( should('create right publicKey without SHA-512 hashing TEST 1', () => {
'ed25519/BASE_POINT.multiply()/should create right publicKey without SHA-512 hashing TEST 1',
() => {
const publicKey = const publicKey =
ed.Point.BASE.multiply(0x90af56259a4b6bfbc4337980d5d75fbe3c074630368ff3804d33028e5dbfa77n); Point.BASE.multiply(0x90af56259a4b6bfbc4337980d5d75fbe3c074630368ff3804d33028e5dbfa77n);
deepStrictEqual( deepStrictEqual(
publicKey.toHex(), publicKey.toHex(),
'0f3b913371411b27e646b537e888f685bf929ea7aab93c950ed84433f064480d' '0f3b913371411b27e646b537e888f685bf929ea7aab93c950ed84433f064480d'
); );
} });
); should('create right publicKey without SHA-512 hashing TEST 2', () => {
should(
'ed25519/BASE_POINT.multiply()/should create right publicKey without SHA-512 hashing TEST 2',
() => {
const publicKey = const publicKey =
ed.Point.BASE.multiply(0x364e8711a60780382a5d57b061c126f039940f28a9e91fe039d4d3094d8b88n); Point.BASE.multiply(0x364e8711a60780382a5d57b061c126f039940f28a9e91fe039d4d3094d8b88n);
deepStrictEqual( deepStrictEqual(
publicKey.toHex(), publicKey.toHex(),
'ad545340b58610f0cd62f17d55af1ab11ecde9c084d5476865ddb4dbda015349' 'ad545340b58610f0cd62f17d55af1ab11ecde9c084d5476865ddb4dbda015349'
); );
} });
); should('create right publicKey without SHA-512 hashing TEST 3', () => {
should(
'ed25519/BASE_POINT.multiply()/should create right publicKey without SHA-512 hashing TEST 3',
() => {
const publicKey = const publicKey =
ed.Point.BASE.multiply(0xb9bf90ff3abec042752cac3a07a62f0c16cfb9d32a3fc2305d676ec2d86e941n); Point.BASE.multiply(0xb9bf90ff3abec042752cac3a07a62f0c16cfb9d32a3fc2305d676ec2d86e941n);
deepStrictEqual( deepStrictEqual(
publicKey.toHex(), publicKey.toHex(),
'e097c4415fe85724d522b2e449e8fd78dd40d20097bdc9ae36fe8ec6fe12cb8c' 'e097c4415fe85724d522b2e449e8fd78dd40d20097bdc9ae36fe8ec6fe12cb8c'
); );
} });
); should('create right publicKey without SHA-512 hashing TEST 4', () => {
should(
'ed25519/BASE_POINT.multiply()/should create right publicKey without SHA-512 hashing TEST 4',
() => {
const publicKey = const publicKey =
ed.Point.BASE.multiply(0x69d896f02d79524c9878e080308180e2859d07f9f54454e0800e8db0847a46en); Point.BASE.multiply(0x69d896f02d79524c9878e080308180e2859d07f9f54454e0800e8db0847a46en);
deepStrictEqual( deepStrictEqual(
publicKey.toHex(), publicKey.toHex(),
'f12cb7c43b59971395926f278ce7c2eaded9444fbce62ca717564cb508a0db1d' 'f12cb7c43b59971395926f278ce7c2eaded9444fbce62ca717564cb508a0db1d'
); );
} });
); should('throw Point#multiply on TEST 5', () => {
should('ed25519/BASE_POINT.multiply()/should throw Point#multiply on TEST 5', () => {
for (const num of [0n, 0, -1n, -1, 1.1]) { for (const num of [0n, 0, -1n, -1, 1.1]) {
throws(() => ed.Point.BASE.multiply(num)); throws(() => Point.BASE.multiply(num));
} }
}); });
});
// https://ed25519.cr.yp.to/python/sign.py // https://ed25519.cr.yp.to/python/sign.py
// https://ed25519.cr.yp.to/python/sign.input // https://ed25519.cr.yp.to/python/sign.input
@ -184,7 +175,7 @@ describe('ed25519', () => {
// Calculate // Calculate
const pub = ed.getPublicKey(to32Bytes(priv)); const pub = ed.getPublicKey(to32Bytes(priv));
deepStrictEqual(hex(pub), expectedPub); deepStrictEqual(hex(pub), expectedPub);
deepStrictEqual(pub, ed.Point.fromHex(pub).toRawBytes()); deepStrictEqual(pub, Point.fromHex(pub).toRawBytes());
const signature = hex(ed.sign(msg, priv)); const signature = hex(ed.sign(msg, priv));
// console.log('vector', i); // console.log('vector', i);
@ -444,9 +435,10 @@ describe('ed25519', () => {
} }
}); });
should('ZIP-215 compliance tests/disallows sig.s >= CURVE.n', () => { should('ZIP-215 compliance tests/disallows sig.s >= CURVE.n', () => {
const sig = new ed.Signature(ed.Point.BASE, 1n); // sig.R = BASE, sig.s = N+1
sig.s = ed.CURVE.n + 1n; const sig =
throws(() => ed.verify(sig, 'deadbeef', ed.Point.BASE)); '5866666666666666666666666666666666666666666666666666666666666666eed3f55c1a631258d69cf7a2def9de1400000000000000000000000000000010';
throws(() => ed.verify(sig, 'deadbeef', Point.BASE));
}); });
const rfc7748Mul = [ const rfc7748Mul = [
@ -511,7 +503,7 @@ describe('ed25519', () => {
// should('X25519: should convert base point to montgomery using fromPoint', () => { // should('X25519: should convert base point to montgomery using fromPoint', () => {
// deepStrictEqual( // deepStrictEqual(
// hex(ed.montgomeryCurve.UfromPoint(ed.Point.BASE)), // hex(ed.montgomeryCurve.UfromPoint(Point.BASE)),
// ed.montgomeryCurve.BASE_POINT_U // ed.montgomeryCurve.BASE_POINT_U
// ); // );
// }); // });
@ -655,7 +647,7 @@ describe('ed25519', () => {
} }
should('X25519 base point', () => { should('X25519 base point', () => {
const { y } = ed25519.Point.BASE; const { y } = ed25519.ExtendedPoint.BASE;
const { Fp } = ed25519.CURVE; const { Fp } = ed25519.CURVE;
const u = Fp.create((y + 1n) * Fp.invert(1n - y)); const u = Fp.create((y + 1n) * Fp.invert(1n - y));
deepStrictEqual(hex(numberToBytesLE(u, 32)), x25519.Gu); deepStrictEqual(hex(numberToBytesLE(u, 32)), x25519.Gu);
@ -664,7 +656,7 @@ describe('ed25519', () => {
should('isTorsionFree()', () => { should('isTorsionFree()', () => {
const orig = ed.utils.getExtendedPublicKey(ed.utils.randomPrivateKey()).point; const orig = ed.utils.getExtendedPublicKey(ed.utils.randomPrivateKey()).point;
for (const hex of ED25519_TORSION_SUBGROUP.slice(1)) { for (const hex of ED25519_TORSION_SUBGROUP.slice(1)) {
const dirty = orig.add(ed.Point.fromHex(hex)); const dirty = orig.add(Point.fromHex(hex));
const cleared = dirty.clearCofactor(); const cleared = dirty.clearCofactor();
strictEqual(orig.isTorsionFree(), true, `orig must be torsionFree: ${hex}`); strictEqual(orig.isTorsionFree(), true, `orig must be torsionFree: ${hex}`);
strictEqual(dirty.isTorsionFree(), false, `dirty must not be torsionFree: ${hex}`); strictEqual(dirty.isTorsionFree(), false, `dirty must not be torsionFree: ${hex}`);

23
test/ed448.test.js
View File

@ -11,9 +11,10 @@ describe('ed448', () => {
const ed = ed448; const ed = ed448;
const hex = bytesToHex; const hex = bytesToHex;
ed.utils.precompute(4); ed.utils.precompute(4);
const Point = ed.ExtendedPoint;
should(`Basic`, () => { should(`Basic`, () => {
const G1 = ed.Point.BASE; const G1 = Point.BASE.toAffine();
deepStrictEqual( deepStrictEqual(
G1.x, G1.x,
224580040295924300187604334099896036246789641632564134246125461686950415467406032909029192869357953282578032075146446173674602635247710n 224580040295924300187604334099896036246789641632564134246125461686950415467406032909029192869357953282578032075146446173674602635247710n
@ -22,7 +23,7 @@ describe('ed448', () => {
G1.y, G1.y,
298819210078481492676017930443930673437544040154080242095928241372331506189835876003536878655418784733982303233503462500531545062832660n 298819210078481492676017930443930673437544040154080242095928241372331506189835876003536878655418784733982303233503462500531545062832660n
); );
const G2 = ed.Point.BASE.multiply(2n); const G2 = Point.BASE.multiply(2n).toAffine();
deepStrictEqual( deepStrictEqual(
G2.x, G2.x,
484559149530404593699549205258669689569094240458212040187660132787056912146709081364401144455726350866276831544947397859048262938744149n 484559149530404593699549205258669689569094240458212040187660132787056912146709081364401144455726350866276831544947397859048262938744149n
@ -31,7 +32,7 @@ describe('ed448', () => {
G2.y, G2.y,
494088759867433727674302672526735089350544552303727723746126484473087719117037293890093462157703888342865036477787453078312060500281069n 494088759867433727674302672526735089350544552303727723746126484473087719117037293890093462157703888342865036477787453078312060500281069n
); );
const G3 = ed.Point.BASE.multiply(3n); const G3 = Point.BASE.multiply(3n).toAffine();
deepStrictEqual( deepStrictEqual(
G3.x, G3.x,
23839778817283171003887799738662344287085130522697782688245073320169861206004018274567429238677677920280078599146891901463786155880335n 23839778817283171003887799738662344287085130522697782688245073320169861206004018274567429238677677920280078599146891901463786155880335n
@ -43,12 +44,12 @@ describe('ed448', () => {
}); });
should('Basic/decompress', () => { should('Basic/decompress', () => {
const G1 = ed.Point.BASE; const G1 = Point.BASE;
const G2 = ed.Point.BASE.multiply(2n); const G2 = Point.BASE.multiply(2n);
const G3 = ed.Point.BASE.multiply(3n); const G3 = Point.BASE.multiply(3n);
const points = [G1, G2, G3]; const points = [G1, G2, G3];
const getXY = (p) => ({ x: p.x, y: p.y }); const getXY = (p) => p.toAffine();
for (const p of points) deepStrictEqual(getXY(ed.Point.fromHex(p.toHex())), getXY(p)); for (const p of points) deepStrictEqual(getXY(Point.fromHex(p.toHex())), getXY(p));
}); });
const VECTORS_RFC8032 = [ const VECTORS_RFC8032 = [
@ -412,7 +413,7 @@ describe('ed448', () => {
should('BASE_POINT.multiply() throws in Point#multiply on TEST 5', () => { should('BASE_POINT.multiply() throws in Point#multiply on TEST 5', () => {
for (const num of [0n, 0, -1n, -1, 1.1]) { for (const num of [0n, 0, -1n, -1, 1.1]) {
throws(() => ed.Point.BASE.multiply(num)); throws(() => ed.ExtendedPoint.BASE.multiply(num));
} }
}); });
@ -559,7 +560,7 @@ describe('ed448', () => {
// should('X448: should convert base point to montgomery using fromPoint', () => { // should('X448: should convert base point to montgomery using fromPoint', () => {
// deepStrictEqual( // deepStrictEqual(
// hex(ed.montgomeryCurve.UfromPoint(ed.Point.BASE)), // hex(ed.montgomeryCurve.UfromPoint(Point.BASE)),
// ed.montgomeryCurve.BASE_POINT_U // ed.montgomeryCurve.BASE_POINT_U
// ); // );
// }); // });
@ -654,7 +655,7 @@ describe('ed448', () => {
} }
should('X448 base point', () => { should('X448 base point', () => {
const { x, y } = ed448.Point.BASE; const { x, y } = Point.BASE;
const { Fp } = ed448.CURVE; const { Fp } = ed448.CURVE;
// const invX = Fp.invert(x * x); // x² // const invX = Fp.invert(x * x); // x²
const u = Fp.div(Fp.create(y * y), Fp.create(x * x)); // (y²/x²) const u = Fp.div(Fp.create(y * y), Fp.create(x * x)); // (y²/x²)

12
test/hash-to-curve.test.js
View File

@ -111,9 +111,11 @@ function testCurve(curve, ro, nu) {
for (let i = 0; i < ro.vectors.length; i++) { for (let i = 0; i < ro.vectors.length; i++) {
const t = ro.vectors[i]; const t = ro.vectors[i];
should(`(${i})`, () => { should(`(${i})`, () => {
const p = curve.hashToCurve(stringToBytes(t.msg), { const p = curve
.hashToCurve(stringToBytes(t.msg), {
DST: ro.dst, DST: ro.dst,
}); })
.toAffine();
deepStrictEqual(p.x, stringToFp(t.P.x), 'Px'); deepStrictEqual(p.x, stringToFp(t.P.x), 'Px');
deepStrictEqual(p.y, stringToFp(t.P.y), 'Py'); deepStrictEqual(p.y, stringToFp(t.P.y), 'Py');
}); });
@ -123,9 +125,11 @@ function testCurve(curve, ro, nu) {
for (let i = 0; i < nu.vectors.length; i++) { for (let i = 0; i < nu.vectors.length; i++) {
const t = nu.vectors[i]; const t = nu.vectors[i];
should(`(${i})`, () => { should(`(${i})`, () => {
const p = curve.encodeToCurve(stringToBytes(t.msg), { const p = curve
.encodeToCurve(stringToBytes(t.msg), {
DST: nu.dst, DST: nu.dst,
}); })
.toAffine();
deepStrictEqual(p.x, stringToFp(t.P.x), 'Px'); deepStrictEqual(p.x, stringToFp(t.P.x), 'Px');
deepStrictEqual(p.y, stringToFp(t.P.y), 'Py'); deepStrictEqual(p.y, stringToFp(t.P.y), 'Py');
}); });

28
test/jubjub.test.js
View File

@ -1,15 +1,15 @@
import { jubjub, findGroupHash } from '../lib/esm/jubjub.js'; import { jubjub, findGroupHash } from '../lib/esm/jubjub.js';
import { describe, should } from 'micro-should'; import { describe, should } from 'micro-should';
import { deepStrictEqual, throws } from 'assert'; import { deepStrictEqual, throws } from 'assert';
import { hexToBytes, bytesToHex } from '@noble/hashes/utils'; const Point = jubjub.ExtendedPoint;
const G_SPEND = new jubjub.ExtendedPoint( const G_SPEND = new Point(
0x055f1f24f0f0512287e51c3c5a0a6903fc0baf8711de9eafd7c0e66f69d8d2dbn, 0x055f1f24f0f0512287e51c3c5a0a6903fc0baf8711de9eafd7c0e66f69d8d2dbn,
0x566178b2505fdd52132a5007d80a04652842e78ffb376897588f406278214ed7n, 0x566178b2505fdd52132a5007d80a04652842e78ffb376897588f406278214ed7n,
0x0141fafa1f11088a3b2007c14d652375888f3b37838ba6bdffae096741ceddfen, 0x0141fafa1f11088a3b2007c14d652375888f3b37838ba6bdffae096741ceddfen,
0x12eada93c0b7d595f5f04f5ebfb4b7d033ef2884136475cab5e41ce17db5be9cn 0x12eada93c0b7d595f5f04f5ebfb4b7d033ef2884136475cab5e41ce17db5be9cn
); );
const G_PROOF = new jubjub.ExtendedPoint( const G_PROOF = new Point(
0x0174d54ce9fad258a2f8a86a1deabf15c7a2b51106b0fbcd9d29020f78936f71n, 0x0174d54ce9fad258a2f8a86a1deabf15c7a2b51106b0fbcd9d29020f78936f71n,
0x16871d6d877dcd222e4ec3bccb3f37cb1865a2d37dd3a5dcbc032a69b62b4445n, 0x16871d6d877dcd222e4ec3bccb3f37cb1865a2d37dd3a5dcbc032a69b62b4445n,
0x57a3cd31e496d82bd4aa78bd5ecd751cfb76d54a5d3f4560866379f9fc11c9b3n, 0x57a3cd31e496d82bd4aa78bd5ecd751cfb76d54a5d3f4560866379f9fc11c9b3n,
@ -22,7 +22,7 @@ describe('jubjub', () => {
should('toHex/fromHex', () => { should('toHex/fromHex', () => {
// More than field // More than field
throws(() => throws(() =>
jubjub.Point.fromHex( Point.fromHex(
new Uint8Array([ new Uint8Array([
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
@ -31,14 +31,14 @@ describe('jubjub', () => {
); );
// Multiplicative generator (sqrt == null), not on curve. // Multiplicative generator (sqrt == null), not on curve.
throws(() => throws(() =>
jubjub.Point.fromHex( Point.fromHex(
new Uint8Array([ new Uint8Array([
7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0,
]) ])
) )
); );
const tmp = jubjub.Point.fromHex( const tmp = Point.fromHex(
new Uint8Array([ new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0,
@ -47,14 +47,14 @@ describe('jubjub', () => {
deepStrictEqual(tmp.x, 0x8d51ccce760304d0ec030002760300000001000000000000n); deepStrictEqual(tmp.x, 0x8d51ccce760304d0ec030002760300000001000000000000n);
deepStrictEqual(tmp.y, 0n); deepStrictEqual(tmp.y, 0n);
const S = G_SPEND.toAffine().toRawBytes(); const S = G_SPEND.toRawBytes();
const S2 = G_SPEND.double().toAffine().toRawBytes(); const S2 = G_SPEND.double().toRawBytes();
const P = G_PROOF.toAffine().toRawBytes(); const P = G_PROOF.toRawBytes();
const P2 = G_PROOF.double().toAffine().toRawBytes(); const P2 = G_PROOF.double().toRawBytes();
const S_exp = jubjub.Point.fromHex(S); const S_exp = Point.fromHex(S);
const S2_exp = jubjub.Point.fromHex(S2); const S2_exp = Point.fromHex(S2);
const P_exp = jubjub.Point.fromHex(P); const P_exp = Point.fromHex(P);
const P2_exp = jubjub.Point.fromHex(P2); const P2_exp = Point.fromHex(P2);
deepStrictEqual(getXY(G_SPEND.toAffine()), getXY(S_exp)); deepStrictEqual(getXY(G_SPEND.toAffine()), getXY(S_exp));
deepStrictEqual(getXY(G_SPEND.double().toAffine()), getXY(S2_exp)); deepStrictEqual(getXY(G_SPEND.double().toAffine()), getXY(S2_exp));
deepStrictEqual(getXY(G_PROOF.toAffine()), getXY(P_exp)); deepStrictEqual(getXY(G_PROOF.toAffine()), getXY(P_exp));