From 360ca24581290f757cffba5e378e52b33e6ce256 Mon Sep 17 00:00:00 2001
From: parazyd <parazyd@dyne.org>
Date: Wed, 20 Apr 2022 10:48:43 +0200
Subject: [PATCH] crypto/keypair: Implement from_str() for PublicKey.

---
 src/crypto/keypair.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/crypto/keypair.rs b/src/crypto/keypair.rs
index 1e5454b30..ef4761a8b 100644
--- a/src/crypto/keypair.rs
+++ b/src/crypto/keypair.rs
@@ -76,6 +76,16 @@ impl PublicKey {
         self.0.to_bytes()
     }
 
+    /// Tries to create a `PublicKey` instance from a base58 encoded string.
+    pub fn from_str(encoded: &str) -> Result<Self> {
+        let decoded = bs58::decode(encoded).into_vec()?;
+        if decoded.len() != 32 {
+            return Err(Error::PublicKeyFromStr)
+        }
+
+        Self::from_bytes(&decoded.try_into().unwrap())
+    }
+
     pub fn from_bytes(bytes: &[u8; 32]) -> Result<Self> {
         match pallas::Point::from_bytes(bytes).into() {
             Some(k) => Ok(Self(k)),