38 lines
1.8 KiB
Plaintext
38 lines
1.8 KiB
Plaintext
import subtleAlgorithm from './subtle_rsaes.js';
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import bogusWebCrypto from './bogus.js';
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import crypto, { isCryptoKey } from './webcrypto.js';
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import { checkEncCryptoKey } from '../lib/crypto_key.js';
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import checkKeyLength from './check_key_length.js';
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import invalidKeyInput from '../lib/invalid_key_input.js';
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import { types } from './is_key_like.js';
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export const encrypt = async (alg, key, cek) => {
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if (!isCryptoKey(key)) {
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throw new TypeError(invalidKeyInput(key, ...types));
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}
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checkEncCryptoKey(key, alg, 'encrypt', 'wrapKey');
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checkKeyLength(alg, key);
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if (key.usages.includes('encrypt')) {
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return new Uint8Array(await crypto.subtle.encrypt(subtleAlgorithm(alg), key, cek));
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}
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if (key.usages.includes('wrapKey')) {
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const cryptoKeyCek = await crypto.subtle.importKey('raw', cek, ...bogusWebCrypto);
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return new Uint8Array(await crypto.subtle.wrapKey('raw', cryptoKeyCek, key, subtleAlgorithm(alg)));
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}
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throw new TypeError('RSA-OAEP key "usages" must include "encrypt" or "wrapKey" for this operation');
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};
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export const decrypt = async (alg, key, encryptedKey) => {
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if (!isCryptoKey(key)) {
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throw new TypeError(invalidKeyInput(key, ...types));
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}
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checkEncCryptoKey(key, alg, 'decrypt', 'unwrapKey');
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checkKeyLength(alg, key);
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if (key.usages.includes('decrypt')) {
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return new Uint8Array(await crypto.subtle.decrypt(subtleAlgorithm(alg), key, encryptedKey));
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}
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if (key.usages.includes('unwrapKey')) {
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const cryptoKeyCek = await crypto.subtle.unwrapKey('raw', encryptedKey, key, subtleAlgorithm(alg), ...bogusWebCrypto);
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return new Uint8Array(await crypto.subtle.exportKey('raw', cryptoKeyCek));
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}
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throw new TypeError('RSA-OAEP key "usages" must include "decrypt" or "unwrapKey" for this operation');
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};
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