Make AuthorityId serialize/deserialize to/from ss58 (#1180)

* Make `AuthorityId` serialize/deserialize to/from `ss58`

* Updates the wasm files

substrate/core/primitives/src/ed25519.rs

@@ -24,6 +24,9 @@ use ring::{rand, signature};
 use {hash::H512, AuthorityId};
 use base58::{ToBase58, FromBase58};
 
+#[cfg(feature = "std")]
+use serde::{de, Serializer, Deserializer, Deserialize};
+
 /// Alias to 512-bit hash when used in the context of a signature on the relay chain.
 pub type Signature = H512;
 
@@ -278,6 +281,25 @@ impl Verifiable for LocalizedSignature {
 	}
 }
 
+/// Deserialize from `ss58` into something that can be constructed from `[u8; 32]`.
+#[cfg(feature = "std")]
+pub fn deserialize<'de, D, T: From<[u8; 32]>>(deserializer: D) -> Result<T, D::Error> where
+	D: Deserializer<'de>,
+{
+	let ss58 = String::deserialize(deserializer)?;
+	Public::from_ss58check(&ss58)
+		.map_err(|e| de::Error::custom(format!("{:?}", e)))
+		.map(|v| v.0.into())
+}
+
+/// Serializes something that implements `AsRef<[u8; 32]>` into `ss58`.
+#[cfg(feature = "std")]
+pub fn serialize<S, T: AsRef<[u8; 32]>>(data: &T, serializer: S) -> Result<S::Ok, S::Error> where
+	S: Serializer,
+{
+	serializer.serialize_str(&Public(*data.as_ref()).to_ss58check())
+}
+
 #[cfg(test)]
 mod test {
 	use super::*;