diff --git a/experimental/libbox/log.go b/experimental/libbox/log.go
index e275d7e6b..49a0e07aa 100644
--- a/experimental/libbox/log.go
+++ b/experimental/libbox/log.go
@@ -11,6 +11,8 @@ import (
 	"runtime"
 	"runtime/debug"
 	"time"
+
+	"filippo.io/age"
 )
 
 type crashReportMetadata struct {
@@ -89,7 +91,7 @@ func redirectStderr(path string) error {
 	return nil
 }
 
-func CreateZipArchive(sourcePath string, destinationPath string) error {
+func CreateZipArchive(sourcePath string, destinationPath string, encrypt bool) error {
 	sourceInfo, err := os.Stat(sourcePath)
 	if err != nil {
 		return err
@@ -106,7 +108,23 @@ func CreateZipArchive(sourcePath string, destinationPath string) error {
 		_ = destinationFile.Close()
 	}()
 
-	zipWriter := zip.NewWriter(destinationFile)
+	var archiveWriter io.Writer = destinationFile
+	var encryptedWriter io.WriteCloser
+	if encrypt {
+		const reportEncryptionRecipient = "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"
+		var recipient *age.HybridRecipient
+		recipient, err = age.ParseHybridRecipient(reportEncryptionRecipient)
+		if err != nil {
+			return err
+		}
+		encryptedWriter, err = age.Encrypt(destinationFile, recipient)
+		if err != nil {
+			return err
+		}
+		archiveWriter = encryptedWriter
+	}
+
+	zipWriter := zip.NewWriter(archiveWriter)
 
 	rootName := filepath.Base(sourcePath)
 	err = filepath.WalkDir(sourcePath, func(path string, d fs.DirEntry, err error) error {
@@ -158,8 +176,21 @@ func CreateZipArchive(sourcePath string, destinationPath string) error {
 	})
 	if err != nil {
 		_ = zipWriter.Close()
+		if encryptedWriter != nil {
+			_ = encryptedWriter.Close()
+		}
 		return err
 	}
 
-	return zipWriter.Close()
+	err = zipWriter.Close()
+	if err != nil {
+		if encryptedWriter != nil {
+			_ = encryptedWriter.Close()
+		}
+		return err
+	}
+	if encryptedWriter != nil {
+		return encryptedWriter.Close()
+	}
+	return nil
 }
diff --git a/go.mod b/go.mod
index 46c9a0fa1..9cc723895 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module github.com/sagernet/sing-box
 go 1.24.7
 
 require (
+	filippo.io/age v1.3.1
 	github.com/anthropics/anthropic-sdk-go v1.26.0
 	github.com/anytls/sing-anytls v0.0.11
 	github.com/caddyserver/certmagic v0.25.3-0.20260421143802-60d9d8b415d6
@@ -73,6 +74,7 @@ require (
 
 require (
 	filippo.io/edwards25519 v1.1.0 // indirect
+	filippo.io/hpke v0.4.0 // indirect
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/akutz/memconn v0.1.0 // indirect
 	github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa // indirect
diff --git a/go.sum b/go.sum
index 0f1042aa5..d12f110ae 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,13 @@
+c2sp.org/CCTV/age v0.0.0-20251208015420-e9274a7bdbfd h1:ZLsPO6WdZ5zatV4UfVpr7oAwLGRZ+sebTUruuM4Ra3M=
+c2sp.org/CCTV/age v0.0.0-20251208015420-e9274a7bdbfd/go.mod h1:SrHC2C7r5GkDk8R+NFVzYy/sdj0Ypg9htaPXQq5Cqeo=
 code.pfad.fr/check v1.1.0 h1:GWvjdzhSEgHvEHe2uJujDcpmZoySKuHQNrZMfzfO0bE=
 code.pfad.fr/check v1.1.0/go.mod h1:NiUH13DtYsb7xp5wll0U4SXx7KhXQVCtRgdC96IPfoM=
+filippo.io/age v1.3.1 h1:hbzdQOJkuaMEpRCLSN1/C5DX74RPcNCk6oqhKMXmZi0=
+filippo.io/age v1.3.1/go.mod h1:EZorDTYUxt836i3zdori5IJX/v2Lj6kWFU0cfh6C0D4=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+filippo.io/hpke v0.4.0 h1:p575VVQ6ted4pL+it6M00V/f2qTZITO0zgmdKCkd5+A=
+filippo.io/hpke v0.4.0/go.mod h1:EmAN849/P3qdeK+PCMkDpDm83vRHM5cDipBJ8xbQLVY=
 github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/akutz/memconn v0.1.0 h1:NawI0TORU4hcOMsMr11g7vwlCdkYeLKXBcxWu2W/P8A=