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diff --git a/deps/crypto/md5_test.c b/deps/crypto/md5_test.c
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+/*********************************************************************
+* Filename:   md5_test.c
+* Author:     Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details:    Performs known-answer tests on the corresponding MD5
+	          implementation. These tests do not encompass the full
+	          range of available test vectors, however, if the tests
+	          pass it is very, very likely that the code is correct
+	          and was compiled properly. This code also serves as
+	          example usage of the functions.
+*********************************************************************/
+
+/*************************** HEADER FILES ***************************/
+#include <stdio.h>
+#include <memory.h>
+#include <string.h>
+#include "md5.h"
+
+/*********************** FUNCTION DEFINITIONS ***********************/
+int md5_test()
+{
+	BYTE text1[] = {""};
+	BYTE text2[] = {"abc"};
+	BYTE text3_1[] = {"ABCDEFGHIJKLMNOPQRSTUVWXYZabcde"};
+	BYTE text3_2[] = {"fghijklmnopqrstuvwxyz0123456789"};
+	BYTE hash1[MD5_BLOCK_SIZE] = {0xd4,0x1d,0x8c,0xd9,0x8f,0x00,0xb2,0x04,0xe9,0x80,0x09,0x98,0xec,0xf8,0x42,0x7e};
+	BYTE hash2[MD5_BLOCK_SIZE] = {0x90,0x01,0x50,0x98,0x3c,0xd2,0x4f,0xb0,0xd6,0x96,0x3f,0x7d,0x28,0xe1,0x7f,0x72};
+	BYTE hash3[MD5_BLOCK_SIZE] = {0xd1,0x74,0xab,0x98,0xd2,0x77,0xd9,0xf5,0xa5,0x61,0x1c,0x2c,0x9f,0x41,0x9d,0x9f};
+	BYTE buf[16];
+	MD5_CTX ctx;
+	int pass = 1;
+
+	md5_init(&ctx);
+	md5_update(&ctx, text1, strlen(text1));
+	md5_final(&ctx, buf);
+	pass = pass && !memcmp(hash1, buf, MD5_BLOCK_SIZE);
+
+	// Note the MD5 object can be reused.
+	md5_init(&ctx);
+	md5_update(&ctx, text2, strlen(text2));
+	md5_final(&ctx, buf);
+	pass = pass && !memcmp(hash2, buf, MD5_BLOCK_SIZE);
+
+	// Note the data is being added in two chunks.
+	md5_init(&ctx);
+	md5_update(&ctx, text3_1, strlen(text3_1));
+	md5_update(&ctx, text3_2, strlen(text3_2));
+	md5_final(&ctx, buf);
+	pass = pass && !memcmp(hash3, buf, MD5_BLOCK_SIZE);
+
+	return(pass);
+}
+
+int main()
+{
+	printf("MD5 tests: %s\n", md5_test() ? "SUCCEEDED" : "FAILED");
+
+	return(0);
+}