v0.8.0

What's Changed

• Encrypt with by @coderdan in #77
• Bumped version to 0.8.0 by @coderdan in #79
• Bumped cipherstash-dynamodb-derive to 0.8.0 and updated dep by @coderdan in #80

Derive macros

Adds support for custom field functions so that arbitrary types can be added to Unsealed and encrypted.

For example, to handle a field with a BTreeMap:

#[derive(Debug, Clone, PartialEq, Searchable, Encryptable, Decryptable, Identifiable)]
struct Test {
    #[partition_key]
    pub pk: String,
    #[sort_key]
    pub sk: String,
    pub name: String,
    pub age: i16,
    #[cipherstash(plaintext)]
    pub tag: String,
    #[cipherstash(encryptable_with = put_attrs, decryptable_with = get_attrs)]
    pub attrs: BTreeMap<String, String>,
}

fn put_attrs(unsealed: &mut Unsealed, attrs: BTreeMap<String, String>) {
    attrs.into_iter().for_each(|(k, v)| {
        unsealed.add_protected_map_field("attrs", k, Plaintext::from(v));
    })
}

fn get_attrs<T>(unsealed: &mut Unsealed) -> Result<T, SealError>
where
    T: FromIterator<(String, String)>,
{
    unsealed
        .take_protected_map("attrs")
        .ok_or(TypeParseError("attrs".to_string()))?
        .into_iter()
        .map(|(k, v)| {
            TryFromPlaintext::try_from_plaintext(v)
                .map(|v| (k, v))
                .map_err(SealError::from)
        })
        .collect()
}

Full Changelog: v0.7.4...v0.8.0