better hash func

diff --git a/src/ctl.c b/src/ctl.c
index b2334a6abe20d607f028856736b763e285185c30..039962c433c406fc46c669a1fe65a3eb0ec0ef4f 100644 (file)
--- a/src/ctl.c
+++ b/src/ctl.c
@@ -216,7 +216,7 @@ int idpw_verify(char* idpw, char *newid, uint8_t* newtoken){
 
 }
 
-static inline uint32_t _hashfunc(uint8_t* data, size_t size){
+static inline uint32_t _fnv(uint8_t* data, size_t size){
 
        size_t nblocks = size / 8;
        uint64_t hash = 2166136261u;
@@ -253,9 +253,23 @@ static inline uint32_t _hashfunc(uint8_t* data, size_t size){
        return hash;
 }
 
+static inline uint32_t _hashfunc(uint8_t* data, size_t size){
+       uint32_t hashtrunc = 0;
+       uint8_t hash[32] = {0};
+       EVP_MD_CTX *mdctx;
+       int digest_len = 0;
+       mdctx = EVP_MD_CTX_new();
+       EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL);
+       EVP_DigestUpdate(mdctx, data, size);
+       EVP_DigestFinal_ex(mdctx, hash, &digest_len);
+       EVP_MD_CTX_free(mdctx);
+       memcpy(&hashtrunc, hash, sizeof(uint32_t));
+    return hashtrunc;
+}
+
 int make_hash(int fd, int buck_size){
 
-    int hash = _hashfunc((uint8_t*)&fd, sizeof(int));
+    uint32_t hash = _hashfunc((uint8_t*)&fd, sizeof(int));
 
     return hash % buck_size;
 }