diff --git a/ap/lib/libssl/openssl-1.1.1o/test/mdc2test.c b/ap/lib/libssl/openssl-1.1.1o/test/mdc2test.c
new file mode 100644
index 0000000..0658843
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/test/mdc2test.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <string.h>
+
+#include "internal/nelem.h"
+#include "testutil.h"
+
+#if defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_MDC2)
+# define OPENSSL_NO_MDC2
+#endif
+
+#ifndef OPENSSL_NO_MDC2
+# include <openssl/evp.h>
+# include <openssl/mdc2.h>
+
+# ifdef CHARSET_EBCDIC
+#  include <openssl/ebcdic.h>
+# endif
+
+static unsigned char pad1[16] = {
+    0x42, 0xE5, 0x0C, 0xD2, 0x24, 0xBA, 0xCE, 0xBA,
+    0x76, 0x0B, 0xDD, 0x2B, 0xD4, 0x09, 0x28, 0x1A
+};
+
+static unsigned char pad2[16] = {
+    0x2E, 0x46, 0x79, 0xB5, 0xAD, 0xD9, 0xCA, 0x75,
+    0x35, 0xD8, 0x7A, 0xFE, 0xAB, 0x33, 0xBE, 0xE2
+};
+
+static int test_mdc2(void)
+{
+    int testresult = 0;
+    unsigned char md[MDC2_DIGEST_LENGTH];
+    EVP_MD_CTX *c;
+    static char text[] = "Now is the time for all ";
+    size_t tlen = strlen(text);
+
+# ifdef CHARSET_EBCDIC
+    ebcdic2ascii(text, text, tlen);
+# endif
+
+    c = EVP_MD_CTX_new();
+    if (!TEST_ptr(c)
+        || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL))
+        || !TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
+        || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
+        || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad1, MDC2_DIGEST_LENGTH)
+        || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL)))
+        goto end;
+
+    /* FIXME: use a ctl function? */
+    ((MDC2_CTX *)EVP_MD_CTX_md_data(c))->pad_type = 2;
+    if (!TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
+        || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
+        || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad2, MDC2_DIGEST_LENGTH))
+        goto end;
+
+    testresult = 1;
+ end:
+    EVP_MD_CTX_free(c);
+    return testresult;
+}
+#endif
+
+int setup_tests(void)
+{
+#ifndef OPENSSL_NO_MDC2
+    ADD_TEST(test_mdc2);
+#endif
+    return 1;
+}