1 files changed, 31 insertions, 0 deletions
diff --git a/src/hash/jenkins.c b/src/hash/jenkins.c
new file mode 100644
index 0000000..b11de8e
--- /dev/null
+++ b/src/hash/jenkins.c
@@ -0,0 +1,31 @@
+#include "../i_util.h"
+#include "../crypto.h"
+#include <stdio.h>
+#include <stdint.h>
+
+uint32_t jenkins_oaat(uint8_t* in, size_t len){
+    uint32_t hash = 0;
+
+    for(int i = 0; i != len;){
+        hash += in[i++];
+        hash += hash << 10;
+        hash ^= hash >> 6;
+    }
+    hash += hash << 3;
+    hash ^= hash >> 11;
+    hash += hash << 15;
+
+    return hash;
+}
+
+int l_oaat(lua_State* L){ 
+  size_t len = 0;
+  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
+
+  char digest[64];
+
+  uint32_t u = jenkins_oaat(a, len);
+  sprintf(digest,"%04x",u);
+  lua_pushstring(L, digest);
+  return 1;
+}