tons of hashes bleh

1 files changed, 28 insertions, 0 deletions

diff --git a/src/hash/sdbm.c b/src/hash/sdbm.c
new file mode 100644
index 0000000..bec251e
--- /dev/null
+++ b/src/hash/sdbm.c
@@ -0,0 +1,28 @@
+#include "../i_util.h"
+#include "../crypto.h"
+#include <stdio.h>
+#include <stdint.h>
+
+uint64_t sdbm(uint8_t* in, size_t len){
+    uint64_t hash = 0;
+
+    for(int i = 0; i != len; i++){
+        hash = (uint64_t)*in + (hash << 6) + (hash << 16) - hash;
+        in++;
+    }
+
+    return hash;
+}
+
+int l_sdbm(lua_State* L){ 
+  size_t len = 0;
+  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
+
+  char digest[64];
+
+  uint64_t u = sdbm(a, len);
+  sprintf(digest,"%016lx",u);
+  lua_pushstring(L, digest);
+  return 1;
+}
+