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'use strict';
const common = require('../common');
if (!common.hasCrypto)
common.skip('missing crypto');
const assert = require('assert');
const { ECDH, getCurves } = require('crypto');
// A valid private key for the secp256k1 curve.
const cafebabeKey = 'cafebabe'.repeat(8);
// Associated compressed and uncompressed public keys (points).
const cafebabePubPtComp =
'03672a31bfc59d3f04548ec9b7daeeba2f61814e8ccc40448045007f5479f693a3';
const cafebabePubPtUnComp =
'04672a31bfc59d3f04548ec9b7daeeba2f61814e8ccc40448045007f5479f693a3' +
'2e02c7f93d13dc2732b760ca377a5897b9dd41a1c1b29dc0442fdce6d0a04d1d';
// Invalid test: key argument is undefined.
common.expectsError(
() => ECDH.convertKey(),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
});
// Invalid test: curve argument is undefined.
common.expectsError(
() => ECDH.convertKey(cafebabePubPtComp),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
});
// Invalid test: curve argument is invalid.
common.expectsError(
() => ECDH.convertKey(cafebabePubPtComp, 'badcurve'),
{
type: TypeError,
message: 'Invalid ECDH curve name'
});
if (getCurves().includes('secp256k1')) {
// Invalid test: format argument is undefined.
common.expectsError(
() => ECDH.convertKey(cafebabePubPtComp, 'secp256k1', 'hex', 'hex', 10),
{
code: 'ERR_CRYPTO_ECDH_INVALID_FORMAT',
type: TypeError,
message: 'Invalid ECDH format: 10'
});
// Point formats.
let uncompressed = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'buffer',
'uncompressed');
let compressed = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'buffer',
'compressed');
let hybrid = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'buffer',
'hybrid');
assert.strictEqual(uncompressed[0], 4);
let firstByte = compressed[0];
assert(firstByte === 2 || firstByte === 3);
firstByte = hybrid[0];
assert(firstByte === 6 || firstByte === 7);
// Format conversion from hex to hex
uncompressed = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'hex',
'uncompressed');
compressed = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'hex',
'compressed');
hybrid = ECDH.convertKey(cafebabePubPtComp,
'secp256k1',
'hex',
'hex',
'hybrid');
assert.strictEqual(uncompressed, cafebabePubPtUnComp);
assert.strictEqual(compressed, cafebabePubPtComp);
// Compare to getPublicKey.
const ecdh1 = ECDH('secp256k1');
ecdh1.generateKeys();
ecdh1.setPrivateKey(cafebabeKey, 'hex');
assert.strictEqual(ecdh1.getPublicKey('hex', 'uncompressed'), uncompressed);
assert.strictEqual(ecdh1.getPublicKey('hex', 'compressed'), compressed);
assert.strictEqual(ecdh1.getPublicKey('hex', 'hybrid'), hybrid);
}
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