Crate encon

Encon is an optionally-encrypted config format, built on top of JSON. A mix of encrypted and plain fields, and support for encrypting arbitrary JSON values make it very flexible.

Example

use serde_json::json;
use encon::{Password, Map, Encryptable};

let pass = Password::new("strongpassword");

let mut map = Map::new();
map.insert("foo", Encryptable::Plain("Foo".into()));
map.insert("bar", Encryptable::Plain("Bar".into()));
map.get_mut(&"foo".to_owned()).unwrap().intend_encrypted();

assert_eq!(map.get(&"foo".to_owned()).unwrap().is_encrypted(), false);
assert_eq!(map.get(&"bar".to_owned()).unwrap().is_encrypted(), false);

map.apply_all_intents(&pass).unwrap();
assert_eq!(map.get(&"foo".to_owned()).unwrap().is_encrypted(), true);
assert_eq!(map.get(&"bar".to_owned()).unwrap().is_encrypted(), false);

let json = map.to_json_pretty().unwrap();
let mut map2: Map = serde_json::from_str(&json).unwrap();
assert_eq!(map2.get(&"foo".to_owned()).unwrap().is_encrypted(), true);
assert_eq!(map2.get(&"bar".to_owned()).unwrap().is_encrypted(), false);

let value = map2.get_mut(&"foo".to_owned()).unwrap()
    .to_decrypted(&pass).unwrap()
    .as_plain().unwrap().clone();
assert_eq!(value, json!("Foo"));

Structs

Map	Represents a mapping of string keys to WithIntent values (a wrapper around Encryptable).
Password	Represents an encryption password, and contains the low level encrypt/decrypt operations on lists of bytes.
WithIntent	A wrapper around Encryptable that also has an intent flag, indicating if we'd like it to be outputted as encrypted or plain.

Enums

DecryptError	An error that may arise during decryption.
EnconError	High level error enum for when a single error type like DecryptError is too specific.
EncryptError	An error that may arise during encryption. Generally it's expected that encryption doesn't fail.
Encryptable	A value that can either be encrypted or plain, functionality to transition between the two states, and a pretty serde representation. In either variant, it represents an arbitrary JSON value.
EncryptableKind	Pairs with Encryptable, and is used in WithIntent.
MapToJsonError	An error arising from converting a Map to JSON (either pretty or compact)