fixtures/test-keys

Purpose

Tiny synthetic RSA keypair for unit tests that need an RsaPrivateKey / RsaPublicKey shape but don't need to run a real cryptographic operation. Modulus is 16 bits (n = 251 * 241 = 60 491) so the modulus-length policy gate's sub-1024-bit reject path can fire without colliding with real signing operations.

Features

Hand-computed CRT parameters (d, p, q, dp, dq, qInv)
Round-trip-safe through every parser/serialiser
16-bit modulus exercises the MODULUS_TOO_SHORT rejection path

Usage

import {
    TINY_PRIVATE_KEY,
    TINY_PUBLIC_KEY,
} from "../__fixtures__/test-keys.js";

API Reference

`TINY_PUBLIC_KEY: RsaPublicKey`

`TINY_PRIVATE_KEY: RsaPrivateKey`

Implementation Notes

NOT a real cryptographic key. Do not use for any signature / encryption operation that needs to interoperate with real RSA keys — the modulus is far below the FIPS / industry minimum.
The 16-bit modulus is chosen specifically so it cannot host a SHA-256 encoded message (the EM is 32 bytes, the modulus is 2 bytes); this triggers the canonical MODULUS_TOO_SHORT failure path without needing to construct adversarial inputs.

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