feat(cli): add FRC-102 compatible EIP-191 signing via --fevm flag ([#13388](#13388))

Author: aceppaluni

CHANGELOG.md

@@ -13,6 +13,7 @@
 - chore(deps): update of quic-go to v0.54.1 and go-libp2p to v0.43.0 ([filecoin-project/lotus#13361](https://github.com/filecoin-project/lotus/pull/13361))
 - feat(spcli): add a `deposit-margin-factor` option to `lotus-miner actor new` and `lotus-shed miner create` so the sent deposit still covers the on-chain requirement if it rises between lookup and execution
 - feat(cli): lotus evm deploy prints message CID ([filecoin-project/lotus#13378](https://github.com/filecoin-project/lotus/pull/13378))
+- feat(cli): add FRC-102 compatible EIP-191 signing via --fevm flag ([filecoin-project/lotus#13388](https://github.com/filecoin-project/lotus/pull/13388))
 
 # Node and Miner v1.34.1 / 2025-09-15
 

cli/wallet.go

@@ -435,7 +435,7 @@ var walletSign = &cli.Command{
 	ArgsUsage: "<signing address> <hexMessage>",
 	Flags: []cli.Flag{
 		&cli.BoolFlag{
-			Name: "fevm",
+			Name:  "fevm",
 			Usage: "Use EIP-191 (Ethereum-style) prefix for signing FEVM messages per FRC-102",
 		},
 	},
@@ -467,7 +467,7 @@ var walletSign = &cli.Command{
 
 		var prefix []byte
 		if cctx.Bool("fevm") {
-			//EVM-Compatible 
+			//EVM-Compatible
 			prefix = []byte(fmt.Sprintf("\x19Ethereum Signed Message:\n%d", len(msg)))
 		} else {
 			//Filecoin