config files, macOS support

shared/confparser.go

@@ -0,0 +1,31 @@
+package shared
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func ParseConfFile(path string) (map[string]string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	out := map[string]string{}
+
+	lines := strings.SplitSeq(strings.TrimSpace(string(data)), "\n")
+	for line := range lines {
+		line = strings.TrimSpace(line)
+		if len(line) == 0 || strings.HasPrefix(line, "#") {
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			return nil, fmt.Errorf("expected '=' when parsing %s", path)
+		}
+		out[strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
+	}
+
+	return out, nil
+}

shared/proto.go

@@ -15,7 +15,7 @@ const PROTO_VERSION uint16 = 1
 // SYM  = XChaCha20-Poly1305 with nonce prepended
 // HMAC = HMAC-SHA-256
 // hpke = HPKE(MLKEM768X25519, ChaCha20Poly1305, HKDF-SHA-256)
-// ds   = ML-DSA
+// ds   = ML-DSA-44
 
 // packet format
 // [ version - 2 bytes ] [ type - 2 bytes ] [ payload - see below ]