mirror of
https://github.com/danbulant/jose
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22 lines
624 B
JavaScript
22 lines
624 B
JavaScript
import { JOSENotSupported } from '../util/errors.js';
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import random from '../runtime/random.js';
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const bitLengths = new Map([
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['A128CBC-HS256', 128],
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['A128GCM', 96],
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['A128GCMKW', 96],
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['A192CBC-HS384', 128],
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['A192GCM', 96],
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['A192GCMKW', 96],
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['A256CBC-HS512', 128],
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['A256GCM', 96],
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['A256GCMKW', 96],
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]);
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const generateIv = (alg) => {
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const bitLength = bitLengths.get(alg);
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if (!bitLength) {
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throw new JOSENotSupported(`Unsupported JWE Algorithm: ${alg}`);
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}
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return random(new Uint8Array(bitLength >> 3));
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};
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export default generateIv;
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export { bitLengths };
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