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diff --git a/contrib/epee/include/hmac-md5.h b/contrib/epee/include/hmac-md5.h
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+++ b/contrib/epee/include/hmac-md5.h
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+/*
+ * libEtPan! -- a mail stuff library
+ *
+ * Copyright (C) 2001, 2005 - DINH Viet Hoa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the libEtPan! project nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* hmac-md5.h -- HMAC_MD5 functions
+ */
+
+/*
+ * $Id: hmac-md5.h,v 1.1.1.1 2005/03/18 20:17:28 zautrix Exp $
+ */
+
+#ifndef HMAC_MD5_H
+#define HMAC_MD5_H 1
+
+namespace md5
+{
+
+
+
+#define HMAC_MD5_SIZE 16
+
+	/* intermediate MD5 context */
+	typedef struct HMAC_MD5_CTX_s {
+		MD5_CTX ictx, octx;
+	} HMAC_MD5_CTX;
+
+	/* intermediate HMAC state
+	*  values stored in network byte order (Big Endian)
+	*/
+	typedef struct HMAC_MD5_STATE_s {
+		UINT4 istate[4];
+		UINT4 ostate[4];
+	} HMAC_MD5_STATE;
+
+	/* One step hmac computation
+	*
+	* digest may be same as text or key
+	*/
+	void hmac_md5(const unsigned char *text, int text_len,
+		const unsigned char *key, int key_len,
+		unsigned char digest[HMAC_MD5_SIZE]);
+
+	/* create context from key
+	*/
+	void hmac_md5_init(HMAC_MD5_CTX *hmac,
+		const unsigned char *key, int key_len);
+
+	/* precalculate intermediate state from key
+	*/
+	void hmac_md5_precalc(HMAC_MD5_STATE *hmac,
+		const unsigned char *key, int key_len);
+
+	/* initialize context from intermediate state
+	*/
+	void hmac_md5_import(HMAC_MD5_CTX *hmac, HMAC_MD5_STATE *state);
+
+#define hmac_md5_update(hmac, text, text_len) MD5Update(&(hmac)->ictx, (text), (text_len))
+
+	/* finish hmac from intermediate result.  Intermediate result is zeroed.
+	*/
+	void hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
+		HMAC_MD5_CTX *hmac);
+
+}
+
+#endif /* HMAC_MD5_H */