@dwn-protocol/id-sdk
Version:
SDK for accessing the features and capabilities
57 lines • 2.85 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
import { universalTypeOf } from '../../common/index.js';
import { AesCtr } from '../crypto-primitives/index.js';
import { BaseAesCtrAlgorithm, CryptoKey } from '../algorithms-api/index.js';
export class AesCtrAlgorithm extends BaseAesCtrAlgorithm {
decrypt(options) {
return __awaiter(this, void 0, void 0, function* () {
const { algorithm, key, data } = options;
this.checkAlgorithmOptions({ algorithm, key });
// The secret key must be allowed to be used for 'decrypt' operations.
this.checkKeyUsages({ keyUsages: ['decrypt'], allowedKeyUsages: key.usages });
const plaintext = AesCtr.decrypt({
counter: algorithm.counter,
data: data,
key: key.material,
length: algorithm.length
});
return plaintext;
});
}
encrypt(options) {
return __awaiter(this, void 0, void 0, function* () {
const { algorithm, key, data } = options;
this.checkAlgorithmOptions({ algorithm, key });
// The secret key must be allowed to be used for 'encrypt' operations.
this.checkKeyUsages({ keyUsages: ['encrypt'], allowedKeyUsages: key.usages });
const ciphertext = AesCtr.encrypt({
counter: algorithm.counter,
data: data,
key: key.material,
length: algorithm.length
});
return ciphertext;
});
}
generateKey(options) {
return __awaiter(this, void 0, void 0, function* () {
const { algorithm, extractable, keyUsages } = options;
this.checkGenerateKey({ algorithm, keyUsages });
const secretKey = yield AesCtr.generateKey({ length: algorithm.length });
if (universalTypeOf(secretKey) !== 'Uint8Array') {
throw new Error('Operation failed to generate key.');
}
const secretCryptoKey = new CryptoKey(algorithm, extractable, secretKey, 'secret', this.keyUsages);
return secretCryptoKey;
});
}
}
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