Add CompressData utility

Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>

util/util.go

@@ -15,6 +15,8 @@
 package util
 
 import (
+	"bytes"
+	"compress/gzip"
 	"context"
 	"crypto/aes"
 	"crypto/cipher"
@@ -429,3 +431,23 @@ func UTF16EncodedByteArrayFromString(s string) ([]byte, error) {
 	asBytes := Uint16ToByteArray(asUint16)
 	return asBytes, nil
 }
+
+func CompressData(data []byte) ([]byte, error) {
+	var b bytes.Buffer
+	gz := gzip.NewWriter(&b)
+
+	_, err := gz.Write(data)
+	if err != nil {
+		return nil, fmt.Errorf("failed to compress data: %w", err)
+	}
+
+	if err = gz.Flush(); err != nil {
+		return nil, fmt.Errorf("failed to flush buffer: %w", err)
+	}
+
+	if err = gz.Close(); err != nil {
+		return nil, fmt.Errorf("failed to close buffer: %w", err)
+	}
+
+	return b.Bytes(), nil
+}