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diff --git a/test/testmd4.c b/test/testmd4.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* This is derived from material copyright RSA Data Security, Inc.
+ * Their notice is reproduced below in its entirety.
+ *
+ * Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
+ * rights reserved.
+ *
+ * RSA Data Security, Inc. makes no representations concerning either
+ * the merchantability of this software or the suitability of this
+ * software for any particular purpose. It is provided "as is"
+ * without express or implied warranty of any kind.
+ *
+ * These notices must be retained in any copies of any part of this
+ * documentation and/or software.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "apr_errno.h"
+#include "apr_md4.h"
+#include "apr_file_io.h"
+
+#include "abts.h"
+#include "testutil.h"
+
+static struct {
+        const char *string;
+        const char *md4sum;
+} md4sums[] = 
+{
+/* 
+* Taken from the old md4 test suite.
+* MD4 ("") = 31d6cfe0d16ae931b73c59d7e0c089c0
+* MD4 ("a") = bde52cb31de33e46245e05fbdbd6fb24
+* MD4 ("abc") = a448017aaf21d8525fc10ae87aa6729d
+* MD4 ("message digest") = d9130a8164549fe818874806e1c7014b
+* MD4 ("abcdefghijklmnopqrstuvwxyz") = d79e1c308aa5bbcdeea8ed63df412da9
+* MD4 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")
+* MD4 ("12345678901234567890123456789012345678901234567890123456789012345678901234567890") = e33b4ddc9c38f2199c3e7b164fcc0536
+* 
+*/
+        {"", 
+         "\x31\xd6\xcf\xe0\xd1\x6a\xe9\x31\xb7\x3c\x59\xd7\xe0\xc0\x89\xc0"},
+        {"a", 
+         "\xbd\xe5\x2c\xb3\x1d\xe3\x3e\x46\x24\x5e\x05\xfb\xdb\xd6\xfb\x24"},
+        {"abc", 
+         "\xa4\x48\x01\x7a\xaf\x21\xd8\x52\x5f\xc1\x0a\xe8\x7a\xa6\x72\x9d"},
+        {"message digest", 
+         "\xd9\x13\x0a\x81\x64\x54\x9f\xe8\x18\x87\x48\x06\xe1\xc7\x01\x4b"},
+        {"abcdefghijklmnopqrstuvwxyz", 
+         "\xd7\x9e\x1c\x30\x8a\xa5\xbb\xcd\xee\xa8\xed\x63\xdf\x41\x2d\xa9"},
+        {"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 
+         "\x04\x3f\x85\x82\xf2\x41\xdb\x35\x1c\xe6\x27\xe1\x53\xe7\xf0\xe4"},
+        {"12345678901234567890123456789012345678901234567890123456789012345678901234567890", 
+         "\xe3\x3b\x4d\xdc\x9c\x38\xf2\x19\x9c\x3e\x7b\x16\x4f\xcc\x05\x36"}
+};
+
+static int num_sums = sizeof(md4sums) / sizeof(md4sums[0]); 
+static int count;
+
+#if 0
+static int MDStringComp(const void *string, const void *sum)
+{
+        apr_md4_ctx_t context;
+        unsigned char digest[APR_MD4_DIGESTSIZE];
+        unsigned int len = strlen(string);
+
+        apr_md4_init(&context);
+        apr_md4_update(&context, (unsigned char *)string, len);
+        apr_md4_final(digest, &context);
+        return (memcmp(digest, sum, APR_MD4_DIGESTSIZE));
+
+}
+#endif
+
+static void test_md4sum(abts_case *tc, void *data)
+{
+        apr_md4_ctx_t context;
+        unsigned char digest[APR_MD4_DIGESTSIZE];
+        const void *string = md4sums[count].string;
+        const void *sum = md4sums[count].md4sum;
+        unsigned int len = strlen(string);
+
+        ABTS_ASSERT(tc, "apr_md4_init", (apr_md4_init(&context) == 0));
+        ABTS_ASSERT(tc, "apr_md4_update", 
+                    (apr_md4_update(&context, 
+                                    (unsigned char *)string, len) == 0));
+        
+        ABTS_ASSERT(tc, "apr_md4_final", (apr_md4_final(digest, &context) ==0));
+        ABTS_ASSERT(tc, "check for correct md4 digest", 
+                    (memcmp(digest, sum, APR_MD4_DIGESTSIZE) == 0));
+}
+
+abts_suite *testmd4(abts_suite *suite)
+{
+        suite = ADD_SUITE(suite);
+
+        for (count=0; count < num_sums; count++) {
+            abts_run_test(suite, test_md4sum, NULL);
+        }
+
+        return suite;
+}