2 files changed, 9 insertions, 0 deletions
diff --git a/src/net/download.cpp b/src/net/download.cpp
index fad0bf6f2..a8f0e1c0c 100644
--- a/src/net/download.cpp
+++ b/src/net/download.cpp
@@ -125,6 +125,13 @@ unsigned long Download::fadler32(FILE *const file)
     return adler;
 }
 
+unsigned long Download::adlerBuffer(char *buffer, int size)
+{
+    unsigned long adler = adler32(0L, Z_NULL, 0);
+    return adler32(static_cast<uInt>(adler),
+        reinterpret_cast<Bytef*>(buffer), size);
+}
+
 void Download::addHeader(const std::string &header)
 {
     mHeaders = curl_slist_append(mHeaders, header.c_str());
diff --git a/src/net/download.h b/src/net/download.h
index d351a8355..d0025c2b3 100644
--- a/src/net/download.h
+++ b/src/net/download.h
@@ -100,6 +100,8 @@ class Download final
 
         static void secureCurl(CURL *const curl);
 
+        static unsigned long adlerBuffer(char *buffer, int size);
+
     private:
         static int downloadThread(void *ptr);
         static int downloadProgress(void *clientp, double dltotal,