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diff --git a/test/monniaux/crypto-algorithms/md2.h b/test/monniaux/crypto-algorithms/md2.h
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+++ b/test/monniaux/crypto-algorithms/md2.h
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+/*********************************************************************
+* Filename:   md2.h
+* Author:     Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details:    Defines the API for the corresponding MD2 implementation.
+*********************************************************************/
+
+#ifndef MD2_H
+#define MD2_H
+
+/*************************** HEADER FILES ***************************/
+#include <stddef.h>
+
+/****************************** MACROS ******************************/
+#define MD2_BLOCK_SIZE 16
+
+/**************************** DATA TYPES ****************************/
+typedef unsigned char BYTE;             // 8-bit byte
+
+typedef struct {
+   BYTE data[16];
+   BYTE state[48];
+   BYTE checksum[16];
+   int len;
+} MD2_CTX;
+
+/*********************** FUNCTION DECLARATIONS **********************/
+void md2_init(MD2_CTX *ctx);
+void md2_update(MD2_CTX *ctx, const BYTE data[], size_t len);
+void md2_final(MD2_CTX *ctx, BYTE hash[]);   // size of hash must be MD2_BLOCK_SIZE
+
+#endif   // MD2_H