sentinel-for-laravel
Tamper-evident seals for Eloquent models (keyed MACs and signatures, key rotation, an append-only ledger with external anchors), idempotency keys, single-use nonces and URLs, and RFC 9421 HTTP message signatures.
laravel-security-headers
Laravel middleware for comprehensive security headers including CSP with nonce support, HSTS, and Permissions-Policy
laravel-hmac-auth
by hmacauth
HMAC API authentication for Laravel with signature verification, replay attack prevention, and rate limiting