58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
import type {SecretKeyType} from "bls-eth-wasm";
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import {generateRandomSecretKey} from "@chainsafe/bls-keygen";
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import {SECRET_KEY_LENGTH} from "../constants.js";
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import {getContext} from "./context.js";
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import {PublicKey} from "./publicKey.js";
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import {Signature} from "./signature.js";
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import {bytesToHex, hexToBytes} from "../helpers/index.js";
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import {SecretKey as ISecretKey} from "../types.js";
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import {InvalidLengthError, ZeroSecretKeyError} from "../errors.js";
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export class SecretKey implements ISecretKey {
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readonly value: SecretKeyType;
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constructor(value: SecretKeyType) {
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if (value.isZero()) {
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throw new ZeroSecretKeyError();
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}
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this.value = value;
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}
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static fromBytes(bytes: Uint8Array): SecretKey {
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if (bytes.length !== SECRET_KEY_LENGTH) {
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throw new InvalidLengthError("SecretKey", SECRET_KEY_LENGTH);
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}
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const context = getContext();
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const secretKey = new context.SecretKey();
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secretKey.deserialize(bytes);
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return new SecretKey(secretKey);
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}
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static fromHex(hex: string): SecretKey {
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return this.fromBytes(hexToBytes(hex));
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}
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static fromKeygen(entropy?: Uint8Array): SecretKey {
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const sk = generateRandomSecretKey(entropy);
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return this.fromBytes(sk);
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}
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sign(message: Uint8Array): Signature {
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return new Signature(this.value.sign(message));
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}
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toPublicKey(): PublicKey {
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return new PublicKey(this.value.getPublicKey());
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}
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toBytes(): Uint8Array {
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return this.value.serialize();
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}
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toHex(): string {
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return bytesToHex(this.toBytes());
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}
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}
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