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Add test for ristretto equality testing

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Paul Miller 2023-02-27 15:33:41 +00:00
parent e64a9d654c
commit ec2c3e1248
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1 changed files with 14 additions and 1 deletions
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15
test/ed25519-addons.test.js
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@ -2,7 +2,7 @@ import { sha512 } from '@noble/hashes/sha512';
import { hexToBytes, bytesToHex, randomBytes } from '@noble/hashes/utils';
import { deepStrictEqual, strictEqual, throws } from 'assert';
import { describe, should } from 'micro-should';
import { numberToBytesLE } from '../esm/abstract/utils.js';
import { bytesToNumberLE, numberToBytesLE } from '../esm/abstract/utils.js';
import { default as x25519vectors } from './wycheproof/x25519_test.json' assert { type: 'json' };
import { ed25519ctx, ed25519ph, RistrettoPoint, x25519 } from '../esm/ed25519.js';
@ -281,10 +281,23 @@ describe('ristretto255', () => {
deepStrictEqual(point.toHex(), encodedHashToPoints[i]);
}
});
should('have proper equality testing', () => {
const MAX_255B = BigInt('0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff');
const bytes255ToNumberLE = (bytes) =>
ed25519ctx.CURVE.Fp.create(bytesToNumberLE(bytes) & MAX_255B);
const priv = new Uint8Array([
198, 101, 65, 165, 93, 120, 37, 238, 16, 133, 10, 35, 253, 243, 161, 246, 229, 135, 12, 137,
202, 114, 222, 139, 146, 123, 4, 125, 152, 173, 1, 7,
]);
const pub = RistrettoPoint.BASE.multiply(bytes255ToNumberLE(priv));
deepStrictEqual(pub.equals(RistrettoPoint.ZERO), false);
});
});
// ESM is broken.
import url from 'url';
import { assert } from 'console';
if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
should.run();
}