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Просмотр файла: bls.d.ts
/*! noble-curves - MIT License (c) 2022 Paul Miller (paulmillr.com) */
/**
* BLS (Barreto-Lynn-Scott) family of pairing-friendly curves.
* Implements BLS (Boneh-Lynn-Shacham) signatures.
* Consists of two curves: G1 and G2:
* - G1 is a subgroup of (x, y) E(Fq) over y² = x³ + 4.
* - G2 is a subgroup of ((x₁, x₂+i), (y₁, y₂+i)) E(Fq²) over y² = x³ + 4(1 + i) where i is √-1
* - Gt, created by bilinear (ate) pairing e(G1, G2), consists of p-th roots of unity in
* Fq^k where k is embedding degree. Only degree 12 is currently supported, 24 is not.
* Pairing is used to aggregate and verify signatures.
* We are using Fp for private keys (shorter) and Fp₂ for signatures (longer).
* Some projects may prefer to swap this relation, it is not supported for now.
*/
import { AffinePoint } from './curve.js';
import { IField } from './modular.js';
import { Hex, PrivKey, CHash } from './utils.js';
import { MapToCurve, Opts as HTFOpts, htfBasicOpts, createHasher } from './hash-to-curve.js';
import { CurvePointsType, ProjPointType as ProjPointType, CurvePointsRes } from './weierstrass.js';
type Fp = bigint;
export type ShortSignatureCoder<Fp> = {
fromHex(hex: Hex): ProjPointType<Fp>;
toRawBytes(point: ProjPointType<Fp>): Uint8Array;
toHex(point: ProjPointType<Fp>): string;
};
export type SignatureCoder<Fp2> = {
fromHex(hex: Hex): ProjPointType<Fp2>;
toRawBytes(point: ProjPointType<Fp2>): Uint8Array;
toHex(point: ProjPointType<Fp2>): string;
};
export type CurveType<Fp, Fp2, Fp6, Fp12> = {
G1: Omit<CurvePointsType<Fp>, 'n'> & {
ShortSignature: SignatureCoder<Fp>;
mapToCurve: MapToCurve<Fp>;
htfDefaults: HTFOpts;
};
G2: Omit<CurvePointsType<Fp2>, 'n'> & {
Signature: SignatureCoder<Fp2>;
mapToCurve: MapToCurve<Fp2>;
htfDefaults: HTFOpts;
};
fields: {
Fp: IField<Fp>;
Fr: IField<bigint>;
Fp2: IField<Fp2> & {
reim: (num: Fp2) => {
re: bigint;
im: bigint;
};
multiplyByB: (num: Fp2) => Fp2;
frobeniusMap(num: Fp2, power: number): Fp2;
};
Fp6: IField<Fp6>;
Fp12: IField<Fp12> & {
frobeniusMap(num: Fp12, power: number): Fp12;
multiplyBy014(num: Fp12, o0: Fp2, o1: Fp2, o4: Fp2): Fp12;
conjugate(num: Fp12): Fp12;
finalExponentiate(num: Fp12): Fp12;
};
};
params: {
x: bigint;
r: bigint;
};
htfDefaults: HTFOpts;
hash: CHash;
randomBytes: (bytesLength?: number) => Uint8Array;
};
export type CurveFn<Fp, Fp2, Fp6, Fp12> = {
getPublicKey: (privateKey: PrivKey) => Uint8Array;
getPublicKeyForShortSignatures: (privateKey: PrivKey) => Uint8Array;
sign: {
(message: Hex, privateKey: PrivKey): Uint8Array;
(message: ProjPointType<Fp2>, privateKey: PrivKey): ProjPointType<Fp2>;
};
signShortSignature: {
(message: Hex, privateKey: PrivKey): Uint8Array;
(message: ProjPointType<Fp>, privateKey: PrivKey): ProjPointType<Fp>;
};
verify: (signature: Hex | ProjPointType<Fp2>, message: Hex | ProjPointType<Fp2>, publicKey: Hex | ProjPointType<Fp>, htfOpts?: htfBasicOpts) => boolean;
verifyShortSignature: (signature: Hex | ProjPointType<Fp>, message: Hex | ProjPointType<Fp>, publicKey: Hex | ProjPointType<Fp2>, htfOpts?: htfBasicOpts) => boolean;
verifyBatch: (signature: Hex | ProjPointType<Fp2>, messages: (Hex | ProjPointType<Fp2>)[], publicKeys: (Hex | ProjPointType<Fp>)[], htfOpts?: htfBasicOpts) => boolean;
aggregatePublicKeys: {
(publicKeys: Hex[]): Uint8Array;
(publicKeys: ProjPointType<Fp>[]): ProjPointType<Fp>;
};
aggregateSignatures: {
(signatures: Hex[]): Uint8Array;
(signatures: ProjPointType<Fp2>[]): ProjPointType<Fp2>;
};
aggregateShortSignatures: {
(signatures: Hex[]): Uint8Array;
(signatures: ProjPointType<Fp>[]): ProjPointType<Fp>;
};
millerLoop: (ell: [Fp2, Fp2, Fp2][], g1: [Fp, Fp]) => Fp12;
pairing: (P: ProjPointType<Fp>, Q: ProjPointType<Fp2>, withFinalExponent?: boolean) => Fp12;
G1: CurvePointsRes<Fp> & ReturnType<typeof createHasher<Fp>>;
G2: CurvePointsRes<Fp2> & ReturnType<typeof createHasher<Fp2>>;
Signature: SignatureCoder<Fp2>;
ShortSignature: ShortSignatureCoder<Fp>;
params: {
x: bigint;
r: bigint;
G1b: bigint;
G2b: Fp2;
};
fields: {
Fp: IField<Fp>;
Fp2: IField<Fp2>;
Fp6: IField<Fp6>;
Fp12: IField<Fp12>;
Fr: IField<bigint>;
};
utils: {
randomPrivateKey: () => Uint8Array;
calcPairingPrecomputes: (p: AffinePoint<Fp2>) => [Fp2, Fp2, Fp2][];
};
};
export declare function bls<Fp2, Fp6, Fp12>(CURVE: CurveType<Fp, Fp2, Fp6, Fp12>): CurveFn<Fp, Fp2, Fp6, Fp12>;
export {};
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