42 lines
1.7 KiB
JavaScript
42 lines
1.7 KiB
JavaScript
import { ensureBytes } from '../utils.js';
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import { getWebcryptoSubtle } from './utils.js';
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function generate(algo, length) {
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const keyLength = length / 8;
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const keyParams = { name: algo, length };
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const cryptParams = { name: algo };
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// const params: Record<string, any> = ({ e: algo, i: { name: algo, length } });
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return (key, nonce) => {
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ensureBytes(key, keyLength);
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if (algo === 'AES-CTR') {
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cryptParams.counter = nonce;
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cryptParams.length = 64;
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}
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else {
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cryptParams.iv = nonce;
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}
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return {
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keyLength,
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async encrypt(plaintext) {
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ensureBytes(plaintext);
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const cr = getWebcryptoSubtle();
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const iKey = await cr.importKey('raw', key, keyParams, true, ['encrypt']);
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const cipher = await cr.encrypt(cryptParams, iKey, plaintext);
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return new Uint8Array(cipher);
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},
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async decrypt(ciphertext) {
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ensureBytes(ciphertext);
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const cr = getWebcryptoSubtle();
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const iKey = await cr.importKey('raw', key, keyParams, true, ['decrypt']);
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const plaintext = await cr.decrypt(cryptParams, iKey, ciphertext);
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return new Uint8Array(plaintext);
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},
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};
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};
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}
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export const aes_128_ctr = generate('AES-CTR', 128);
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export const aes_256_ctr = generate('AES-CTR', 256);
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export const aes_128_cbc = generate('AES-CBC', 128);
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export const aes_256_cbc = generate('AES-CBC', 256);
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export const aes_128_gcm = generate('AES-GCM', 128);
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export const aes_256_gcm = generate('AES-GCM', 256);
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//# sourceMappingURL=aes.js.map
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