Ivan Fontosh
19 lines
532 B
JavaScript
19 lines
532 B
JavaScript
import { createPrivateKey, sign } from 'node:crypto';
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import { canonicalJson } from './canonicalJson.mjs';
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export function b64url(buf) {
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return Buffer.from(buf)
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.toString('base64')
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.replace(/\+/g, '-')
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.replace(/\//g, '_')
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.replace(/=+$/u, '');
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}
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export function signPayload(payload, privateKeyPem) {
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const key = createPrivateKey(privateKeyPem);
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const body = canonicalJson(payload);
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const sig = sign(null, Buffer.from(body, 'utf8'), key);
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return `${b64url(Buffer.from(body, 'utf8'))}.${b64url(sig)}`;
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}
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