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diff --git a/Build/source/texk/lcdf-typetools/lcdf-typetools-2.104/include/lcdf/md5.h b/Build/source/texk/lcdf-typetools/lcdf-typetools-2.104/include/lcdf/md5.h
new file mode 100644
index 00000000000..7d7f8641d23
--- /dev/null
+++ b/Build/source/texk/lcdf-typetools/lcdf-typetools-2.104/include/lcdf/md5.h
@@ -0,0 +1,48 @@
+/* -*- related-file-name: "../../liblcdf/md5.c" -*-
+ * md5.h - MD5 Message-Digest Algorithm
+ * Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
+ *
+ * according to the definition of MD5 in RFC 1321 from April 1992.
+ * NOTE: This is *not* the same file as the one from glibc
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef LCDF_MD5_H
+#define LCDF_MD5_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MD5_DIGEST_SIZE 16
+#define MD5_TEXT_DIGEST_SIZE 26 /* + 1 for the terminating NUL */
+
+typedef struct { /* Hmm, should be private */
+ uint32_t A,B,C,D;
+ uint32_t nblocks;
+ unsigned char buf[64];
+ int count;
+ int finalized;
+} MD5_CONTEXT;
+
+void md5_init(MD5_CONTEXT *ctx);
+void md5_update(MD5_CONTEXT *hd, const unsigned char *inbuf, size_t inlen);
+void md5_final(unsigned char digest[MD5_DIGEST_SIZE], MD5_CONTEXT *ctx);
+void md5_final_text(char *text_digest, MD5_CONTEXT *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* LCDF_MD5_H */