27 lines
890 B
JavaScript
27 lines
890 B
JavaScript
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import { JOSENotSupported } from '../util/errors.js';
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export default function subtleDsa(alg, algorithm) {
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const hash = `SHA-${alg.slice(-3)}`;
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switch (alg) {
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case 'HS256':
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case 'HS384':
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case 'HS512':
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return { hash, name: 'HMAC' };
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case 'PS256':
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case 'PS384':
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case 'PS512':
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return { hash, name: 'RSA-PSS', saltLength: alg.slice(-3) >> 3 };
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case 'RS256':
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case 'RS384':
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case 'RS512':
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return { hash, name: 'RSASSA-PKCS1-v1_5' };
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case 'ES256':
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case 'ES384':
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case 'ES512':
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return { hash, name: 'ECDSA', namedCurve: algorithm.namedCurve };
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case 'EdDSA':
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return { name: algorithm.name };
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default:
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throw new JOSENotSupported(`alg ${alg} is not supported either by JOSE or your javascript runtime`);
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}
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}
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