sfw-provider: swapping out base64 for base58

Cargo.lock

@@ -1400,7 +1400,7 @@ dependencies = [
 name = "nym-sfw-provider"
 version = "0.3.3"
 dependencies = [
- "base64 0.11.0",
+ "bs58",
  "built",
  "clap",
  "crypto",

sfw-provider/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-base64 = "0.11.0"
+bs58 = "0.3.0"
 clap = "2.33.0"
 curve25519-dalek = "1.2.3"
 dotenv = "0.15.0"

sfw-provider/src/provider/mod.rs

@@ -87,7 +87,7 @@ impl ClientLedger {
     fn current_clients(&self) -> Vec<MixProviderClient> {
         self.0
             .iter()
-            .map(|(_, v)| base64::encode_config(v, base64::URL_SAFE))
+            .map(|(_, v)| bs58::encode(v).into_string())
             .map(|pub_key| MixProviderClient { pub_key })
             .collect()
     }