Safely encrypt & store serializable data using XChaCha20Poly1305.

[dependencies]
encrypted-message = "0.3"

EncryptedMessage implements FromSql & ToSql, allowing you to use EncryptedMessage as a field type in your models.

• MySQL: Enable the diesel & diesel-mysql features. Supports the Json type.
• PostgreSQL: Enable the diesel & diesel-postgres features. Supports the Json & Jsonb types.

[dependencies]
encrypted-message = { version = "0.3", features = ["diesel", "diesel-<mysql|postgres>"] }

• examples/basic.rs, a basic example of how to use encrypted-message.
• examples/config_with_external_data.rs, an example of a Config that depends on external data, like a user-provided key or password.

This crate uses trusted, pure-Rust encryption using the chacha20poly1305 crate from the Rust Crypto organization.

Keys are handled safely using the secrecy crate, which internally uses the zeroize crate (also from Rust Crypto) to zero-out the keys in memory when no longer used.