diff -urN Python-2.7.18.orig/Modules/_hashopenssl.c Python-2.7.18/Modules/_hashopenssl.c
--- Python-2.7.18.orig/Modules/_hashopenssl.c	2022-04-10 11:43:51.038101901 +0200
+++ Python-2.7.18/Modules/_hashopenssl.c	2022-04-10 12:07:53.422071515 +0200
@@ -60,7 +60,7 @@
 /* OpenSSL < 1.1.0 */
 #define EVP_MD_CTX_new EVP_MD_CTX_create
 #define EVP_MD_CTX_free EVP_MD_CTX_destroy
-#define HAS_FAST_PKCS5_PBKDF2_HMAC 0
+#define HAS_FAST_PKCS5_PBKDF2_HMAC 1
 #include <openssl/hmac.h>
 #else
 /* OpenSSL >= 1.1.0 */