Changelog

v0.4.0 (2025-03-12)

Add Changelog
Add NaCl public-key encryption via X25519 ECDH
- Salchicha.box/4
- Salchicha.box_open/4
- Salchicha.generate_box_keypair/0
- Salchicha.compute_shared_secret/2
Add NaCl public-key message signing via Ed25519 EdDSA
- Salchicha.sign/2
- Salchicha.signature_valid?/3
- Salchicha.generate_sign_keypair/0
Add examples of public key crypto usage

Improve docs
- Add examples for XSalsa20/XChaCha20 encryption/decryption
- Add additional type docs
- Change references of "block count" to "block counter" for clarity
- Fix typos
Internal function Salchicha.Salsa.xsalsa20_poly1305_decrypt/4 takes cipher_text and tag as arguments instead of combined message. Salchicha.secretbox_open/3 remains unchanged.
Expose Salsa20 Poly1305 functions
- Salchicha.Salsa.salsa20_poly1305_encrypt/3
- Salchicha.Salsa.salsa20_poly1305_decrypt/4

Improve docs and typespecs
Add pure elixir implementations of ChaCha20/XChaCha20 Poly1305 functions in Salchicha.Chacha
- Salchicha.Chacha.chacha20_poly1305_encrypt_pure/4
- Salchicha.Chacha.chacha20_poly1305_decrypt_pure/5
- Salchicha.Chacha.xchacha20_poly1305_encrypt_pure/4
- Salchicha.Chacha.xchacha20_poly1305_decrypt_pure/5
- Add Salchicha.Chacha.chacha20_xor/4 stream cipher primitive
Internal Salchicha.Salsa improvements
- Verify MAC before decrypting remaining ciphertext

Initial release
Support XSalsa20 Poly1305
- Salchicha.secretbox/3
- Salchicha.secretbox_open/3
- Internal functions and primitives in Salchicha.Salsa
Support XChaCha20 Poly1305 in combined and detached modes
- Salchicha.xchacha20_poly1305_encrypt/4
- Salchicha.xchacha20_poly1305_decrypt/4
- Salchicha.xchacha20_poly1305_encrypt_detached/4
- Salchicha.xchacha20_poly1305_decrypt_detached/5
- Internal functions and primitives in Salchicha.Chacha