added private key signing

tomtau · Jun 28, 2022 · 5cce766 · 5cce766
1 parent 9d2d10b
commit 5cce766
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diff --git a/.changelog/unreleased/features/1134-sign-request-conversion.md b/.changelog/unreleased/features/1134-sign-request-conversion.md
@@ -1,2 +1,3 @@
 - `[tendermint]` Added conversions from signing requests to consensus states
+  and private key signing
   ([#1134](https://github.com/informalsystems/tendermint-rs/issues/1134))
diff --git a/tendermint/src/private_key.rs b/tendermint/src/private_key.rs
@@ -6,7 +6,7 @@ use serde::{de, ser, Deserialize, Serialize};
 use subtle_encoding::{Base64, Encoding};
 use zeroize::Zeroizing;
 
-use crate::{prelude::*, public_key::PublicKey};
+use crate::{prelude::*, public_key::PublicKey, Signature};
 
 pub const ED25519_KEYPAIR_SIZE: usize = 64;
 
@@ -38,6 +38,13 @@ impl PrivateKey {
             PrivateKey::Ed25519(signing_key) => Some(signing_key),
         }
     }
+
+    /// Sign a message with this private key
+    pub fn sign(&self, signable_msg_bytes: &[u8]) -> Signature {
+        match self {
+            PrivateKey::Ed25519(signing_key) => signing_key.sign(signable_msg_bytes).into(),
+        }
+    }
 }
 
 /// Serialize an Ed25519 keypair as Base64