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Output generated RSA keys as JSON Web Key #1797

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Output generated RSA keys as JSON Web Key #1797

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35 changes: 35 additions & 0 deletions src/core/operations/GenerateRSAKeyPair.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@

import Operation from "../Operation.mjs";
import forge from "node-forge";
import { toBase64 } from "../lib/Base64.mjs";
import { fromHex } from "../lib/Hex.mjs";
import { cryptNotice } from "../lib/Crypt.mjs";

/**
Expand Down Expand Up @@ -41,6 +43,7 @@ class GenerateRSAKeyPair extends Operation {
type: "option",
value: [
"PEM",
"JWK",
"JSON",
"DER"
]
Expand Down Expand Up @@ -70,6 +73,38 @@ class GenerateRSAKeyPair extends Operation {
case "PEM":
result = forge.pki.publicKeyToPem(keypair.publicKey) + "\n" + forge.pki.privateKeyToPem(keypair.privateKey);
break;
case "JWK": {
const base64urlUInt = function (bigInt) {
let hex = bigInt.toString(16);
// prepend 0 if not even
if (hex.length % 2 === 1) {
hex = "0" + hex;
}
return toBase64(fromHex(hex), "A-Za-z0-9-_");
};
const pubKey = {
kty: "RSA",
kid: "PublicKey",
key_ops: ["verify", "encrypt"], // eslint-disable-line camelcase
n: base64urlUInt(keypair.publicKey.n),
e: base64urlUInt(keypair.publicKey.e)
};
const privKey = {
kty: "RSA",
kid: "PrivateKey",
key_ops: ["sign", "decrypt"], // eslint-disable-line camelcase
n: base64urlUInt(keypair.privateKey.n),
e: base64urlUInt(keypair.privateKey.e),
d: base64urlUInt(keypair.privateKey.d),
p: base64urlUInt(keypair.privateKey.p),
q: base64urlUInt(keypair.privateKey.q),
dp: base64urlUInt(keypair.privateKey.dP),
dq: base64urlUInt(keypair.privateKey.dQ),
qi: base64urlUInt(keypair.privateKey.qInv)
};
result = JSON.stringify({keys: [privKey, pubKey]}, null, 4);
break;
}
case "JSON":
result = JSON.stringify(keypair);
break;
Expand Down