81 lines
2.0 KiB
TypeScript
81 lines
2.0 KiB
TypeScript
import * as core from "webcrypto-core";
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import { EcCrypto } from "./crypto";
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import { EcPrivateKey } from "./private_key";
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import { EcPublicKey } from "./public_key";
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import { CryptoKey } from "../../keys";
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import { setCryptoKey, getCryptoKey } from "../storage";
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export class EcdhProvider extends core.EcdhProvider {
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public override namedCurves = core.EcCurves.names;
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public async onGenerateKey(
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algorithm: EcKeyGenParams,
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extractable: boolean,
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keyUsages: KeyUsage[]
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): Promise<CryptoKeyPair> {
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const keys = await EcCrypto.generateKey(
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{
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...algorithm,
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name: this.name,
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},
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extractable,
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keyUsages
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);
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return {
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privateKey: setCryptoKey(keys.privateKey as CryptoKey),
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publicKey: setCryptoKey(keys.publicKey as CryptoKey),
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};
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}
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public async onExportKey(
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format: KeyFormat,
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key: CryptoKey
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): Promise<JsonWebKey | ArrayBuffer> {
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return EcCrypto.exportKey(format, getCryptoKey(key));
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}
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public async onImportKey(
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format: KeyFormat,
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keyData: JsonWebKey | ArrayBuffer,
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algorithm: EcKeyImportParams,
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extractable: boolean,
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keyUsages: KeyUsage[]
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): Promise<core.CryptoKey> {
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const key = await EcCrypto.importKey(
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format,
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keyData,
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{ ...algorithm, name: this.name },
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extractable,
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keyUsages
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);
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return setCryptoKey(key);
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}
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public override checkCryptoKey(key: CryptoKey, keyUsage?: KeyUsage) {
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super.checkCryptoKey(key, keyUsage);
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const internalKey = getCryptoKey(key);
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if (
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!(
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internalKey instanceof EcPrivateKey ||
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internalKey instanceof EcPublicKey
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)
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) {
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throw new TypeError("key: Is not EC CryptoKey");
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}
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}
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public async onDeriveBits(
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algorithm: EcdhKeyDeriveParams,
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baseKey: CryptoKey,
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length: number
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): Promise<ArrayBuffer> {
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const bits = await EcCrypto.deriveBits(
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{ ...algorithm, public: getCryptoKey(algorithm.public) },
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getCryptoKey(baseKey),
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length
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);
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return bits;
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}
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}
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