18 lines
711 B
Plaintext
18 lines
711 B
Plaintext
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import crypto, { isCryptoKey } from './webcrypto.js';
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import { checkSigCryptoKey } from '../lib/crypto_key.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 default function getCryptoKey(alg, key, usage) {
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if (isCryptoKey(key)) {
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checkSigCryptoKey(key, alg, usage);
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return key;
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}
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if (key instanceof Uint8Array) {
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if (!alg.startsWith('HS')) {
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throw new TypeError(invalidKeyInput(key, ...types));
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}
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return crypto.subtle.importKey('raw', key, { hash: `SHA-${alg.slice(-3)}`, name: 'HMAC' }, false, [usage]);
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}
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throw new TypeError(invalidKeyInput(key, ...types, 'Uint8Array'));
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}
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