LoupVaillant/Monocypher 2.0.0

Monocypher 2.0.0

on GitHub

Changes since 1.1.0:

• Changed the authenticated encryption format. It now conforms to
  RFC 7539, with one exception: it uses XChacha20 initialisation instead
  of the IETF version of Chacha20. This new format conforms to
  Libsodium's crypto_aead_xchacha20poly1305_ietf_encrypt.
• Removed crypto_lock_encrypt() and crypto_lock_auth().
• Renamed crypto_lock_aead_auth() to crypto_lock_auth_ad().
• Renamed crypto_unlock_aead_auth() to crypto_unlock_auth_ad().
• Added crypto_lock_auth_message() and crypto_unlock_auth_message()
• Renamed crypto_aead_lock to crypto_lock_aead;
• Renamed crypto_aead_unlock to crypto_unlock_aead;

The format change facilitates optimisation by aligning data to block
boundaries. The API changes increase consistency.