From 2a410940c580fa8f02d60efafba5303a247db3f8 Mon Sep 17 00:00:00 2001
From: "Evgeny @ SimpleX Chat"
 <259188159+evgeny-simplex@users.noreply.github.com>
Date: Sun, 12 Apr 2026 14:20:15 +0000
Subject: [PATCH] lib: add JSON instance to Signature type

---
 src/Simplex/Messaging/Crypto.hs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Simplex/Messaging/Crypto.hs b/src/Simplex/Messaging/Crypto.hs
index 9cc78acb30..754f554802 100644
--- a/src/Simplex/Messaging/Crypto.hs
+++ b/src/Simplex/Messaging/Crypto.hs
@@ -816,6 +816,13 @@ instance CryptoSignature (Signature s) => StrEncoding (Signature s) where
   strDecode = decodeSignature
   {-# INLINE strDecode #-}
 
+instance CryptoSignature (Signature s) => ToJSON (Signature s) where
+  toJSON = strToJSON
+  toEncoding = strToJEncoding
+
+instance CryptoSignature (Signature s) => FromJSON (Signature s) where
+  parseJSON = strParseJSON "Signature"
+
 instance CryptoSignature (Signature s) => Encoding (Signature s) where
   smpEncode = smpEncode . signatureBytes
   {-# INLINE smpEncode #-}