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