50 lines
1.8 KiB
TypeScript
50 lines
1.8 KiB
TypeScript
import * as core from "webcrypto-core";
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import { CryptoKey } from "../../keys";
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import { setCryptoKey, getCryptoKey } from "../storage";
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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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export class EcdhProvider extends core.EcdhProvider {
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public override namedCurves = core.EcCurves.names;
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public async onGenerateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): 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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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(format: KeyFormat, key: CryptoKey): Promise<JsonWebKey | ArrayBuffer> {
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return EcCrypto.exportKey(format, getCryptoKey(key));
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}
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public async onImportKey(format: KeyFormat, keyData: JsonWebKey | ArrayBuffer, algorithm: EcKeyImportParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<core.CryptoKey> {
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const key = await EcCrypto.importKey(format, keyData, {...algorithm, name: this.name}, extractable, keyUsages);
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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 (!(internalKey instanceof EcPrivateKey || internalKey instanceof EcPublicKey)) {
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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(algorithm: EcdhKeyDeriveParams, baseKey: CryptoKey, length: number): Promise<ArrayBuffer> {
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const bits = await EcCrypto.deriveBits({...algorithm, public: getCryptoKey(algorithm.public)}, getCryptoKey(baseKey), length);
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return bits;
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}
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}
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