fix: properly pad calculated RSA primes

panva · Jul 29, 2019 · dd121ce · dd121ce
1 parent 8d625a1
commit dd121ce
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/help/rsa_primes.js b/lib/help/rsa_primes.js
@@ -9,7 +9,10 @@ const ZERO = BigInt(0)
 const ONE = BigInt(1)
 const TWO = BigInt(2)
 
-const toJWKParameter = n => base64url.encodeBuffer(Buffer.from(n.toString(16), 'hex'))
+const toJWKParameter = (n) => {
+  const hex = n.toString(16)
+  return base64url.encodeBuffer(Buffer.from(hex.length % 2 === 1 ? `0${hex}` : hex, 'hex'))
+}
 const fromBuffer = buf => BigInt(`0x${buf.toString('hex')}`)
 const bitLength = n => n.toString(2).length