Utilize EVP_MD_fetch instead of the deprecated EVP_get_digestbyname

Author: stratakis

Modules/_hashopenssl.c

@@ -364,7 +364,7 @@ EVP_tp_init(EVPobject *self, PyObject *args, PyObject *kwds)
         return -1;
     }
 
-    digest = EVP_get_digestbyname(nameStr);
+    digest = EVP_MD_fetch(NULL, nameStr, NULL);
     if (!digest) {
         PyErr_SetString(PyExc_ValueError, "unknown hash function");
         if (data_obj)
@@ -529,7 +529,7 @@ EVP_new(PyObject *self, PyObject *args, PyObject *kwdict)
     if (data_obj)
         GET_BUFFER_VIEW_OR_ERROUT(data_obj, &view);
 
-    digest = EVP_get_digestbyname(name);
+    digest = EVP_MD_fetch(NULL, name, NULL);
 
     ret_obj = EVPnew(name_obj, digest, NULL, (unsigned char*)view.buf, view.len);
 
@@ -654,7 +654,7 @@ pbkdf2_hmac(PyObject *self, PyObject *args, PyObject *kwdict)
         return NULL;
     }
 
-    digest = EVP_get_digestbyname(name);
+    digest = EVP_MD_fetch(NULL, name, NULL);
     if (digest == NULL) {
         PyErr_SetString(PyExc_ValueError, "unsupported hash type");
         goto end;
@@ -941,8 +941,8 @@ generate_hash_name_list(void)
      \
         if (CONST_new_ ## NAME ## _ctx_p == NULL) { \
             EVP_MD_CTX *ctx_p = EVP_MD_CTX_new(); \
-            if (!EVP_get_digestbyname(#NAME) || \
-                !EVP_DigestInit(ctx_p, EVP_get_digestbyname(#NAME))) { \
+            if (!EVP_MD_fetch(NULL, #NAME, NULL) || \
+                !EVP_DigestInit(ctx_p, EVP_MD_fetch(NULL, #NAME, NULL))) { \
                 _setException(PyExc_ValueError); \
                 EVP_MD_CTX_free(ctx_p); \
                 return NULL; \