You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
3.3 KiB
65 lines
3.3 KiB
import { ExtPointType } from './abstract/edwards.js'; |
|
import { htfBasicOpts } from './abstract/hash-to-curve.js'; |
|
import { Hex } from './abstract/utils.js'; |
|
import { AffinePoint } from './abstract/curve.js'; |
|
export declare const ed448: import("./abstract/edwards.js").CurveFn; |
|
export declare const ed448ph: import("./abstract/edwards.js").CurveFn; |
|
export declare const x448: import("./abstract/montgomery.js").CurveFn; |
|
/** |
|
* Converts edwards448 public key to x448 public key. Uses formula: |
|
* * `(u, v) = ((y-1)/(y+1), sqrt(156324)*u/x)` |
|
* * `(x, y) = (sqrt(156324)*u/v, (1+u)/(1-u))` |
|
* @example |
|
* const aPub = ed448.getPublicKey(utils.randomPrivateKey()); |
|
* x448.getSharedSecret(edwardsToMontgomery(aPub), edwardsToMontgomery(someonesPub)) |
|
*/ |
|
export declare function edwardsToMontgomeryPub(edwardsPub: string | Uint8Array): Uint8Array; |
|
export declare const edwardsToMontgomery: typeof edwardsToMontgomeryPub; |
|
export declare const hashToCurve: (msg: Uint8Array, options?: htfBasicOpts | undefined) => import("./abstract/hash-to-curve.js").H2CPoint<bigint>; |
|
export declare const encodeToCurve: (msg: Uint8Array, options?: htfBasicOpts | undefined) => import("./abstract/hash-to-curve.js").H2CPoint<bigint>; |
|
type ExtendedPoint = ExtPointType; |
|
/** |
|
* Each ed448/ExtendedPoint has 4 different equivalent points. This can be |
|
* a source of bugs for protocols like ring signatures. Decaf was created to solve this. |
|
* Decaf point operates in X:Y:Z:T extended coordinates like ExtendedPoint, |
|
* but it should work in its own namespace: do not combine those two. |
|
* https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-ristretto255-decaf448 |
|
*/ |
|
declare class DcfPoint { |
|
private readonly ep; |
|
static BASE: DcfPoint; |
|
static ZERO: DcfPoint; |
|
constructor(ep: ExtendedPoint); |
|
static fromAffine(ap: AffinePoint<bigint>): DcfPoint; |
|
/** |
|
* Takes uniform output of 112-byte hash function like shake256 and converts it to `DecafPoint`. |
|
* The hash-to-group operation applies Elligator twice and adds the results. |
|
* **Note:** this is one-way map, there is no conversion from point to hash. |
|
* https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-ristretto255-decaf448-07#name-element-derivation-2 |
|
* @param hex 112-byte output of a hash function |
|
*/ |
|
static hashToCurve(hex: Hex): DcfPoint; |
|
/** |
|
* Converts decaf-encoded string to decaf point. |
|
* https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-ristretto255-decaf448-07#name-decode-2 |
|
* @param hex Decaf-encoded 56 bytes. Not every 56-byte string is valid decaf encoding |
|
*/ |
|
static fromHex(hex: Hex): DcfPoint; |
|
/** |
|
* Encodes decaf point to Uint8Array. |
|
* https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-ristretto255-decaf448-07#name-encode-2 |
|
*/ |
|
toRawBytes(): Uint8Array; |
|
toHex(): string; |
|
toString(): string; |
|
equals(other: DcfPoint): boolean; |
|
add(other: DcfPoint): DcfPoint; |
|
subtract(other: DcfPoint): DcfPoint; |
|
multiply(scalar: bigint): DcfPoint; |
|
multiplyUnsafe(scalar: bigint): DcfPoint; |
|
} |
|
export declare const DecafPoint: typeof DcfPoint; |
|
export declare const hashToDecaf448: (msg: Uint8Array, options: htfBasicOpts) => DcfPoint; |
|
export declare const hash_to_decaf448: (msg: Uint8Array, options: htfBasicOpts) => DcfPoint; |
|
export {}; |
|
//# sourceMappingURL=ed448.d.ts.map
|