From 72cc640bb17b62105d9c70cb9296046bd5d02cf5 Mon Sep 17 00:00:00 2001
From: Ramana Kumar <ramana@member.fsf.org>
Date: Thu, 7 Mar 2024 21:15:01 +0000
Subject: [PATCH] Update README.md with Ethereum example

Shows how to use the DST to sign/verify messages with the configuration suitable for Ethereum beacon chain.
---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 7ce37a1..57a7d2f 100644
--- a/README.md
+++ b/README.md
@@ -613,6 +613,12 @@ const signature = bls.sign(message, privateKey);
 const isValid = bls.verify(signature, message, publicKey);
 console.log({ publicKey, signature, isValid });
 
+// Use custom DST, e.g. for Ethereum consensus layer
+const htfEthereum = {DST: 'BLS_SIG_BLS12381G2_XMD:SHA-256_SSWU_RO_POP_'};
+const signatureEth = bls.sign(message, privateKey, htfEthereum);
+const isValidEth = bls.verify(signature, message, publicKey, htfEthereum);
+console.log({ signatureEth, isValidEth });
+
 // Sign 1 msg with 3 keys
 const privateKeys = [
   '18f020b98eb798752a50ed0563b079c125b0db5dd0b1060d1c1b47d4a193e1e4',