did_toolkit/
multibase.rs

1// serde-compatible multibase strings
2// multibase is a format:
3// https://datatracker.ietf.org/doc/html/draft-multiformats-multibase-03
4
5use serde::{de::Visitor, Deserialize, Serialize};
6
7/// Encapsulates a public key in Multibase format (see
8/// <https://datatracker.ietf.org/doc/html/draft-multiformats-multibase-03>). Multibase is a new
9/// compact, serialization-friendly format that is still a draft standard and thus, subject to
10/// change. We provide multibase formatting via the [multibase] crate. Private keys are not
11/// accounted for.
12#[derive(Clone, Debug, Default, Hash, PartialOrd, Ord, PartialEq, Eq)]
13pub struct MultiBase(Vec<u8>);
14
15impl Serialize for MultiBase {
16    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
17    where
18        S: serde::Serializer,
19    {
20        serializer.serialize_str(&multibase::encode(multibase::Base::Base64, self.0.clone()))
21    }
22}
23
24impl Visitor<'_> for MultiBase {
25    type Value = MultiBase;
26
27    fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
28        formatter.write_str("Expecting a multibase-formatted string representation")
29    }
30
31    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
32    where
33        E: serde::de::Error,
34    {
35        match multibase::decode(v) {
36            Ok((_, val)) => Ok(MultiBase(val)),
37            Err(e) => Err(E::custom(e)),
38        }
39    }
40}
41
42impl<'de> Deserialize<'de> for MultiBase {
43    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
44    where
45        D: serde::Deserializer<'de>,
46    {
47        deserializer.deserialize_str::<MultiBase>(Default::default())
48    }
49}
did_toolkit/multibase.rs

did_toolkit/
multibase.rs
