@apistudio/apim-cli
Version:
CLI for API Management Products
92 lines (91 loc) • 3.26 kB
JavaScript
import { Buffer } from 'buffer';
import { createPublicKey, KeyObject } from 'crypto';
import { JOSENotSupported } from '../util/errors.js';
import { isCryptoKey } from './webcrypto.js';
import isKeyObject from './is_key_object.js';
import invalidKeyInput from '../lib/invalid_key_input.js';
import { types } from './is_key_like.js';
const p256 = Buffer.from([42, 134, 72, 206, 61, 3, 1, 7]);
const p384 = Buffer.from([43, 129, 4, 0, 34]);
const p521 = Buffer.from([43, 129, 4, 0, 35]);
const secp256k1 = Buffer.from([43, 129, 4, 0, 10]);
export const weakMap = new WeakMap();
const namedCurveToJOSE = (namedCurve) => {
switch (namedCurve) {
case 'prime256v1':
return 'P-256';
case 'secp384r1':
return 'P-384';
case 'secp521r1':
return 'P-521';
case 'secp256k1':
return 'secp256k1';
default:
throw new JOSENotSupported('Unsupported key curve for this operation');
}
};
const getNamedCurve = (kee, raw) => {
var _a;
let key;
if (isCryptoKey(kee)) {
key = KeyObject.from(kee);
}
else if (isKeyObject(kee)) {
key = kee;
}
else {
throw new TypeError(invalidKeyInput(kee, ...types));
}
if (key.type === 'secret') {
throw new TypeError('only "private" or "public" type keys can be used for this operation');
}
switch (key.asymmetricKeyType) {
case 'ed25519':
case 'ed448':
return `Ed${key.asymmetricKeyType.slice(2)}`;
case 'x25519':
case 'x448':
return `X${key.asymmetricKeyType.slice(1)}`;
case 'ec': {
if (weakMap.has(key)) {
return weakMap.get(key);
}
let namedCurve = (_a = key.asymmetricKeyDetails) === null || _a === void 0 ? void 0 : _a.namedCurve;
if (!namedCurve && key.type === 'private') {
namedCurve = getNamedCurve(createPublicKey(key), true);
}
else if (!namedCurve) {
const buf = key.export({ format: 'der', type: 'spki' });
const i = buf[1] < 128 ? 14 : 15;
const len = buf[i];
const curveOid = buf.slice(i + 1, i + 1 + len);
if (curveOid.equals(p256)) {
namedCurve = 'prime256v1';
}
else if (curveOid.equals(p384)) {
namedCurve = 'secp384r1';
}
else if (curveOid.equals(p521)) {
namedCurve = 'secp521r1';
}
else if (curveOid.equals(secp256k1)) {
namedCurve = 'secp256k1';
}
else {
throw new JOSENotSupported('Unsupported key curve for this operation');
}
}
if (raw)
return namedCurve;
const curve = namedCurveToJOSE(namedCurve);
weakMap.set(key, curve);
return curve;
}
default:
throw new TypeError('Invalid asymmetric key type for this operation');
}
};
export function setCurve(keyObject, curve) {
weakMap.set(keyObject, curve);
}
export default getNamedCurve;