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Informations about the package astra512-ffi
FFI bindings for ASTRA-512 (research SIV-style AEAD) with key management and password-based key derivation helpers.
⚠️ This is research cryptography. Do not use in production until independent review.
Install
Native library
The FFI loader searches:
1) explicit path you pass to Astra512::create($path)
2) ASTRA512_LIB env var (absolute path)
3) vendored bin/<platform>/
4) system names: libastra512.so / libastra512.dylib / astra512.dll
Use with a random 32-byte key
Use with a password (derives a 32-byte key via Argon2id)
About salt
- Encryption itself does not need a salt or nonce (ASTRA-512 is SIV-style and deterministic).
- Salt is only for password-based key derivation (Argon2id). Store the salt alongside the ciphertext so you can re-derive the same key to decrypt.
Helpers
Key::generate()→ 32 random bytesKey::save($path, $key)/Key::load($path)Password::deriveKey($password, $opslimit=?, $memlimit=?)→ returns[salt, key]Password::deriveKeyWithSalt($password, $salt, ...)→ returnskey
See examples/ for complete flows.
astra512-ffi
All versions of astra512-ffi with dependencies
PHP Build Version
Package Version
Requires
php Version
>=8.1
ext-ffi Version *
ext-sodium Version *
ext-ffi Version *
ext-sodium Version *
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