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Просмотр файла: bls.d.ts
/**
* BLS != BLS.
* The file implements BLS (Boneh-Lynn-Shacham) signatures.
* Used in both BLS (Barreto-Lynn-Scott) and BN (Barreto-Naehrig)
* families of pairing-friendly curves.
* 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.
* There are two modes of operation:
* - Long signatures: X-byte keys + 2X-byte sigs (G1 keys + G2 sigs).
* - Short signatures: 2X-byte keys + X-byte sigs (G2 keys + G1 sigs).
* @module
**/
/*! noble-curves - MIT License (c) 2022 Paul Miller (paulmillr.com) */
import { type CHash, type Hex, type PrivKey } from '../utils.ts';
import { type H2CHasher, type H2CHashOpts, type H2COpts, type htfBasicOpts, type MapToCurve } from './hash-to-curve.ts';
import { type IField } from './modular.ts';
import type { Fp12, Fp12Bls, Fp2, Fp2Bls, Fp6Bls } from './tower.ts';
import { type CurvePointsRes, type CurvePointsType, type WeierstrassPoint, type WeierstrassPointCons } from './weierstrass.ts';
type Fp = bigint;
export type TwistType = 'multiplicative' | 'divisive';
export type ShortSignatureCoder<Fp> = {
fromBytes(bytes: Uint8Array): WeierstrassPoint<Fp>;
fromHex(hex: Hex): WeierstrassPoint<Fp>;
toBytes(point: WeierstrassPoint<Fp>): Uint8Array;
toHex(point: WeierstrassPoint<Fp>): string;
/** @deprecated use `toBytes` */
toRawBytes(point: WeierstrassPoint<Fp>): Uint8Array;
};
export type SignatureCoder<Fp> = {
fromBytes(bytes: Uint8Array): WeierstrassPoint<Fp>;
fromHex(hex: Hex): WeierstrassPoint<Fp>;
toBytes(point: WeierstrassPoint<Fp>): Uint8Array;
toHex(point: WeierstrassPoint<Fp>): string;
/** @deprecated use `toBytes` */
toRawBytes(point: WeierstrassPoint<Fp>): Uint8Array;
};
export type BlsFields = {
Fp: IField<Fp>;
Fr: IField<bigint>;
Fp2: Fp2Bls;
Fp6: Fp6Bls;
Fp12: Fp12Bls;
};
export type PostPrecomputePointAddFn = (Rx: Fp2, Ry: Fp2, Rz: Fp2, Qx: Fp2, Qy: Fp2) => {
Rx: Fp2;
Ry: Fp2;
Rz: Fp2;
};
export type PostPrecomputeFn = (Rx: Fp2, Ry: Fp2, Rz: Fp2, Qx: Fp2, Qy: Fp2, pointAdd: PostPrecomputePointAddFn) => void;
export type BlsPairing = {
Fp12: Fp12Bls;
calcPairingPrecomputes: (p: WeierstrassPoint<Fp2>) => Precompute;
millerLoopBatch: (pairs: [Precompute, Fp, Fp][]) => Fp12;
pairing: (P: WeierstrassPoint<Fp>, Q: WeierstrassPoint<Fp2>, withFinalExponent?: boolean) => Fp12;
pairingBatch: (pairs: {
g1: WeierstrassPoint<Fp>;
g2: WeierstrassPoint<Fp2>;
}[], withFinalExponent?: boolean) => Fp12;
};
export type BlsPairingParams = {
ateLoopSize: bigint;
xNegative: boolean;
twistType: TwistType;
postPrecompute?: PostPrecomputeFn;
};
export type CurveType = {
G1: CurvePointsType<Fp> & {
ShortSignature: SignatureCoder<Fp>;
mapToCurve: MapToCurve<Fp>;
htfDefaults: H2COpts;
};
G2: CurvePointsType<Fp2> & {
Signature: SignatureCoder<Fp2>;
mapToCurve: MapToCurve<Fp2>;
htfDefaults: H2COpts;
};
fields: BlsFields;
params: {
ateLoopSize: BlsPairingParams['ateLoopSize'];
xNegative: BlsPairingParams['xNegative'];
r: bigint;
twistType: BlsPairingParams['twistType'];
};
htfDefaults: H2COpts;
hash: CHash;
randomBytes?: (bytesLength?: number) => Uint8Array;
postPrecompute?: PostPrecomputeFn;
};
type PrecomputeSingle = [Fp2, Fp2, Fp2][];
type Precompute = PrecomputeSingle[];
/**
* BLS 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
*/
export interface BLSCurvePair {
longSignatures: BLSSigs<bigint, Fp2>;
shortSignatures: BLSSigs<Fp2, bigint>;
millerLoopBatch: BlsPairing['millerLoopBatch'];
pairing: BlsPairing['pairing'];
pairingBatch: BlsPairing['pairingBatch'];
G1: {
Point: WeierstrassPointCons<bigint>;
} & H2CHasher<Fp>;
G2: {
Point: WeierstrassPointCons<Fp2>;
} & H2CHasher<Fp2>;
fields: {
Fp: IField<Fp>;
Fp2: Fp2Bls;
Fp6: Fp6Bls;
Fp12: Fp12Bls;
Fr: IField<bigint>;
};
utils: {
randomSecretKey: () => Uint8Array;
/** @deprecated use randomSecretKey */
randomPrivateKey: () => Uint8Array;
calcPairingPrecomputes: BlsPairing['calcPairingPrecomputes'];
};
}
export type CurveFn = BLSCurvePair & {
/** @deprecated use `longSignatures.getPublicKey` */
getPublicKey: (secretKey: PrivKey) => Uint8Array;
/** @deprecated use `shortSignatures.getPublicKey` */
getPublicKeyForShortSignatures: (secretKey: PrivKey) => Uint8Array;
/** @deprecated use `longSignatures.sign` */
sign: {
(message: Hex, secretKey: PrivKey, htfOpts?: htfBasicOpts): Uint8Array;
(message: WeierstrassPoint<Fp2>, secretKey: PrivKey, htfOpts?: htfBasicOpts): WeierstrassPoint<Fp2>;
};
/** @deprecated use `shortSignatures.sign` */
signShortSignature: {
(message: Hex, secretKey: PrivKey, htfOpts?: htfBasicOpts): Uint8Array;
(message: WeierstrassPoint<Fp>, secretKey: PrivKey, htfOpts?: htfBasicOpts): WeierstrassPoint<Fp>;
};
/** @deprecated use `longSignatures.verify` */
verify: (signature: Hex | WeierstrassPoint<Fp2>, message: Hex | WeierstrassPoint<Fp2>, publicKey: Hex | WeierstrassPoint<Fp>, htfOpts?: htfBasicOpts) => boolean;
/** @deprecated use `shortSignatures.verify` */
verifyShortSignature: (signature: Hex | WeierstrassPoint<Fp>, message: Hex | WeierstrassPoint<Fp>, publicKey: Hex | WeierstrassPoint<Fp2>, htfOpts?: htfBasicOpts) => boolean;
verifyBatch: (signature: Hex | WeierstrassPoint<Fp2>, messages: (Hex | WeierstrassPoint<Fp2>)[], publicKeys: (Hex | WeierstrassPoint<Fp>)[], htfOpts?: htfBasicOpts) => boolean;
/** @deprecated use `longSignatures.aggregatePublicKeys` */
aggregatePublicKeys: {
(publicKeys: Hex[]): Uint8Array;
(publicKeys: WeierstrassPoint<Fp>[]): WeierstrassPoint<Fp>;
};
/** @deprecated use `longSignatures.aggregateSignatures` */
aggregateSignatures: {
(signatures: Hex[]): Uint8Array;
(signatures: WeierstrassPoint<Fp2>[]): WeierstrassPoint<Fp2>;
};
/** @deprecated use `shortSignatures.aggregateSignatures` */
aggregateShortSignatures: {
(signatures: Hex[]): Uint8Array;
(signatures: WeierstrassPoint<Fp>[]): WeierstrassPoint<Fp>;
};
G1: CurvePointsRes<Fp> & H2CHasher<Fp>;
G2: CurvePointsRes<Fp2> & H2CHasher<Fp2>;
/** @deprecated use `longSignatures.Signature` */
Signature: SignatureCoder<Fp2>;
/** @deprecated use `shortSignatures.Signature` */
ShortSignature: ShortSignatureCoder<Fp>;
params: {
ateLoopSize: bigint;
r: bigint;
twistType: TwistType;
/** @deprecated */
G1b: bigint;
/** @deprecated */
G2b: Fp2;
};
};
type BLSInput = Hex | Uint8Array;
export interface BLSSigs<P, S> {
getPublicKey(secretKey: PrivKey): WeierstrassPoint<P>;
sign(hashedMessage: WeierstrassPoint<S>, secretKey: PrivKey): WeierstrassPoint<S>;
verify(signature: WeierstrassPoint<S> | BLSInput, message: WeierstrassPoint<S>, publicKey: WeierstrassPoint<P> | BLSInput): boolean;
verifyBatch: (signature: WeierstrassPoint<S> | BLSInput, messages: WeierstrassPoint<S>[], publicKeys: (WeierstrassPoint<P> | BLSInput)[]) => boolean;
aggregatePublicKeys(publicKeys: (WeierstrassPoint<P> | BLSInput)[]): WeierstrassPoint<P>;
aggregateSignatures(signatures: (WeierstrassPoint<S> | BLSInput)[]): WeierstrassPoint<S>;
hash(message: Uint8Array, DST?: string | Uint8Array, hashOpts?: H2CHashOpts): WeierstrassPoint<S>;
Signature: SignatureCoder<S>;
}
export declare function bls(CURVE: CurveType): CurveFn;
export {};
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