44 lines
1.7 KiB
TypeScript
44 lines
1.7 KiB
TypeScript
import * as core from "webcrypto-core";
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import { setCryptoKey, getCryptoKey } from "../storage";
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import { AesCrypto } from "./crypto";
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import { AesCryptoKey } from "./key";
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export class AesKwProvider extends core.AesKwProvider {
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public async onGenerateKey(algorithm: AesKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKey> {
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const res = await AesCrypto.generateKey(
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{
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name: this.name,
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length: algorithm.length,
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},
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extractable,
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keyUsages,
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);
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return setCryptoKey(res);
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}
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public async onExportKey(format: KeyFormat, key: AesCryptoKey): Promise<JsonWebKey | ArrayBuffer> {
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return AesCrypto.exportKey(format, getCryptoKey(key) as AesCryptoKey);
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}
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public async onImportKey(format: KeyFormat, keyData: JsonWebKey | ArrayBuffer, algorithm: Algorithm, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKey> {
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const res = await AesCrypto.importKey(format, keyData, { name: algorithm.name }, extractable, keyUsages);
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return setCryptoKey(res);
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}
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public override async onEncrypt(algorithm: Algorithm, key: AesCryptoKey, data: ArrayBuffer): Promise<ArrayBuffer> {
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return AesCrypto.encrypt(algorithm, getCryptoKey(key) as AesCryptoKey, new Uint8Array(data));
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}
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public override async onDecrypt(algorithm: Algorithm, key: AesCryptoKey, data: ArrayBuffer): Promise<ArrayBuffer> {
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return AesCrypto.decrypt(algorithm, getCryptoKey(key) as AesCryptoKey, new Uint8Array(data));
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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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if (!(getCryptoKey(key) instanceof AesCryptoKey)) {
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throw new TypeError("key: Is not a AesCryptoKey");
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}
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}
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}
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