Modify to use as a library. Tested in Arduino 1.0.5.

.gitignore

@@ -0,0 +1,29 @@
+*.*~
+####################
+
+####### C++
+# Compiled Object files
+*.slo
+*.lo
+*.o
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+
+
+####### C
+# Object files
+*.o
+
+# Libraries
+*.lib
+*.a
+
+
+

md2/md2.pde → md2/md2.cpp

@@ -1,5 +1,7 @@
 /* MD2 */
 
+# include <string.h>
+
 typedef struct {
 	unsigned char state[48];
 	unsigned char checksum[16];
@@ -109,27 +111,13 @@ void make_digest(char *md5str, const unsigned char *digest, int len) /* {{{ */
 	md5str[len * 2] = '\0';
 }
 
-void do_md2(char *arg)
+void do_md2(char *arg, char *returnedHash)
 {
-	char md2str[33];
 	MD2_CTX context;
-	unsigned char digest[16];
-
-	md2str[0] = '\0';
+	unsigned char digest[16];	
 	MD2Init(&context);
 	MD2Update(&context, (unsigned char*)arg, strlen(arg));
 	MD2Final(digest, &context);
-
-	make_digest(md2str, digest, 16);
-	Serial.println(md2str);
-}
-
-void setup() {
-	Serial.begin(9600);
+	make_digest(returnedHash, digest, 16);
 }
 
-void loop() {
-	do_md2("The quick brown fox jumps over the lazy dog");
-
-	delay(1000);  
-}

md2/md2.h

@@ -0,0 +1,22 @@
+/* MD2 */
+
+typedef struct {
+	unsigned char state[48];
+	unsigned char checksum[16];
+	unsigned char buffer[16];
+	char in_buffer;
+} MD2_CTX;
+
+void MD2Init(void *contextBuf);
+
+static void MD2_Transform(void *contextBuf, const unsigned char *block);
+
+void MD2Update(void *contextBuf, const unsigned char *buf, unsigned int len);
+
+void MD2Final(unsigned char output[16], void *contextBuf);
+
+void make_digest(char *md5str, const unsigned char *digest, int len);
+
+void do_md2(char *arg, char *returnedHash);
+
+

md2/md2.ino

@@ -0,0 +1,13 @@
+#include "md2.h"
+
+void setup() {
+	Serial.begin(9600);
+}
+
+void loop() {
+	char hash[33];
+	do_md2("The quick brown fox jumps over the lazy dog", hash);
+	Serial.println(hash);
+	delay(5000);  
+}
+