28 lines
1.0 KiB
JavaScript
28 lines
1.0 KiB
JavaScript
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import { flattenedDecrypt } from '../flattened/decrypt.js';
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import { JWEInvalid } from '../../util/errors.js';
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import { decoder } from '../../lib/buffer_utils.js';
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export async function compactDecrypt(jwe, key, options) {
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if (jwe instanceof Uint8Array) {
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jwe = decoder.decode(jwe);
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}
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if (typeof jwe !== 'string') {
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throw new JWEInvalid('Compact JWE must be a string or Uint8Array');
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}
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const { 0: protectedHeader, 1: encryptedKey, 2: iv, 3: ciphertext, 4: tag, length, } = jwe.split('.');
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if (length !== 5) {
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throw new JWEInvalid('Invalid Compact JWE');
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}
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const decrypted = await flattenedDecrypt({
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ciphertext,
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iv: (iv || undefined),
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protected: protectedHeader || undefined,
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tag: (tag || undefined),
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encrypted_key: encryptedKey || undefined,
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}, key, options);
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const result = { plaintext: decrypted.plaintext, protectedHeader: decrypted.protectedHeader };
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if (typeof key === 'function') {
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return { ...result, key: decrypted.key };
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}
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return result;
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}
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