fix(web3): normalize Ethereum addresses to lowercase to prevent case-sensitivity issues #2264

lingcoder · lingcoder · commit f9e844e59c74 · 2025-11-30T08:59:11.000+08:00
diff --git a/internal/utilities/siwe/parser.go b/internal/utilities/siwe/parser.go
@@ -52,7 +52,9 @@ func ParseMessage(raw string) (*SIWEMessage, error) {
 		return nil, ErrInvalidDomain
 	}
 
-	address := strings.TrimSpace(lines[1])
+	// Normalize Ethereum addresses to lowercase to prevent case-sensitivity issues
+	// Ethereum addresses are case-insensitive (EIP-55 uses mixed case for checksum)
+	address := strings.ToLower(strings.TrimSpace(lines[1]))
 	if !addressPattern.MatchString(address) {
 		return nil, ErrInvalidAddress
 	}

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,9 @@ func ParseMessage(raw string) (*SIWEMessage, error) {`
`52`	`52`	`return nil, ErrInvalidDomain`
`53`	`53`	`}`
`54`	`54`
`55`		`- address := strings.TrimSpace(lines[1])`
	`55`	`+ // Normalize Ethereum addresses to lowercase to prevent case-sensitivity issues`
	`56`	`+ // Ethereum addresses are case-insensitive (EIP-55 uses mixed case for checksum)`
	`57`	`+ address := strings.ToLower(strings.TrimSpace(lines[1]))`
`56`	`58`	`if !addressPattern.MatchString(address) {`
`57`	`59`	`return nil, ErrInvalidAddress`
`58`	`60`	`}`