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+/*
+ Copyright (C) 1999 Aladdin Enterprises. All rights reserved.
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+ L. Peter Deutsch
+ ghost@aladdin.com
+
+ */
+/*
+ Independent implementation of MD5 (RFC 1321).
+
+ This code implements the MD5 Algorithm defined in RFC 1321.
+ It is derived directly from the text of the RFC and not from the
+ reference implementation.
+
+ The original and principal author of md5.h is L. Peter Deutsch
+ <ghost@aladdin.com>. Other authors are noted in the change history
+ that follows (in reverse chronological order):
+
+ 1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
+ 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
+ added conditionalization for C++ compilation from Martin
+ Purschke <purschke@bnl.gov>.
+ 1999-05-03 lpd Original version.
+ */
+
+#ifndef md5_INCLUDED
+# define md5_INCLUDED
+
+/*
+ * This code has some adaptations for the Ghostscript environment, but it
+ * will compile and run correctly in any environment with 8-bit chars and
+ * 32-bit ints. Specifically, it assumes that if the following are
+ * defined, they have the same meaning as in Ghostscript: P1, P2, P3,
+ * ARCH_IS_BIG_ENDIAN.
+ */
+
+typedef unsigned char md5_byte_t; /* 8-bit byte */
+typedef unsigned int md5_word_t; /* 32-bit word */
+
+/* Define the state of the MD5 Algorithm. */
+typedef struct md5_state_s {
+ md5_word_t count[2]; /* message length in bits, lsw first */
+ md5_word_t abcd[4]; /* digest buffer */
+ md5_byte_t buf[64]; /* accumulate block */
+} md5_state_t;
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Initialize the algorithm. */
+#ifdef P1
+void md5_init(P1(md5_state_t *pms));
+#else
+void md5_init(md5_state_t *pms);
+#endif
+
+/* Append a string to the message. */
+#ifdef P3
+void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes));
+#else
+void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes);
+#endif
+
+/* Finish the message and return the digest. */
+#ifdef P2
+void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16]));
+#else
+void md5_finish(md5_state_t *pms, md5_byte_t digest[16]);
+#endif
+
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif
+
+#endif /* md5_INCLUDED */