Version 1.3.

Improvement in the tests and generalization of the Makefile.

Makefile

@@ -22,10 +22,11 @@ src/$(DES56_LIBNAME) : $(DES56_OBJS) $(COMPAT52_OBJS)
 	$(CC) $(CFLAGS) $(LIB_OPTION) -o src/$(DES56_LIBNAME) $(DES56_OBJS) $(COMPAT52_OBJS)
 
 install: src/$(MD5_LIBNAME) src/$(DES56_LIBNAME)
+	cp src/$(DES56_LIBNAME) $(LUA_LIBDIR)
 	mkdir -p $(LUA_LIBDIR)/md5
-	cp src/$(MD5_LIBNAME) $(LUA_LIBDIR)/md5.so
+	cp src/$(MD5_LIBNAME) $(LUA_LIBDIR)/md5/
 	mkdir -p $(LUA_DIR)
-	cp src/$(DES56_LIBNAME) $(LUA_LIBDIR)
+	cp $(MD5_LUAS) $(LUA_DIR)
 
 clean:
 	rm -f $(MD5_OBJS) src/$(MD5_LIBNAME) $(DES56_OBJS) src/$(DES56_LIBNAME) $(COMPAT52_OBJS)

config

@@ -3,11 +3,14 @@
 # Default prefix
 PREFIX = /usr/local
 
+# Lua version
+LUA_SYS_VER ?= 5.2
+
 # System's libraries directory (where binary libraries are installed)
-LUA_LIBDIR= $(PREFIX)/lib/lua/5.1
+LUA_LIBDIR= $(PREFIX)/lib/lua/$(LUA_SYS_VER)
 
 # System's lua directory (where Lua libraries are installed)
-LUA_DIR= $(PREFIX)/share/lua/5.1
+LUA_DIR= $(PREFIX)/share/lua/$(LUA_SYS_VER)
 
 # Lua includes directory
 LUA_INC= $(PREFIX)/include

doc/us/index.html

@@ -61,22 +61,26 @@ <h1>MD5</h1>
 <h2><a name="overview"></a>Overview</h2>
 
 <p>
-MD5 offers basic cryptographic facilities for 
-<a href="http://www.lua.org">Lua</a> 5.0, 5.1 or 5.2:
+MD5 offers checksum facilities for 
+<a href="http://www.lua.org">Lua</a> 5.X:
 a hash (digest) function, a pair crypt/decrypt based on
 <a href="http://en.wikipedia.org/wiki/MD5">MD5</a> and CFB,
 and a pair crypt/decrypt based on
 <a href="http://en.wikipedia.org/wiki/Data_Encryption_Standard">DES</a> with 56-bit keys.
 </p>
 
+<p>
+Note that although <a href="https://en.wikipedia.org/wiki/MD5">MD5</a> was designed to be used as a cryptographic hash function, it was found that key collisions could be calculated in a few seconds, thus it should not be used where a <a href="https://en.wikipedia.org/wiki/Cryptographic_hash_function">cryptographic hash</a> is required.
+<p>
+
 <p>
 MD5 is free software and uses the same <a href="license.html">license</a>
 as Lua (MIT).
 </p>
 
 <h2><a name="status"></a>Status</h2>
 
-<p>MD5 version 1.2 is now available for
+<p>MD5 version 1.3 is now available for
 <a href="#download">download</a>.</p>
 
 <h2><a name="download"></a>Download</h2>
@@ -96,6 +100,11 @@ <h2><a name="download"></a>Download</h2>
 <h2><a name="history"></a>History</h2>
 
 <dl class="history">
+    <dt><strong>Version 1.3</strong> [16/Apr/2019]</dt>
+    <dd><ul>
+        <li>Code updated to compile for Lua 5.X.  Tested with Lua 5.1, 5.2, 5.3 and 5.4-work2.</li>
+    </ul></dd>
+
     <dt><strong>Version 1.2</strong> [06/Sep/2013]</dt>
     <dd><ul>
         <li>Code adapted to compile for Lua 5.0, 5.1 and 5.2</li>

src/des56.def

@@ -1,5 +1,5 @@
 LIBRARY des56.dll
 DESCRIPTION "DES56"
-VERSION 1.2
+VERSION 1.3
 EXPORTS
 luaopen_des56

src/ldes56.c

@@ -128,13 +128,13 @@ static int des56_crypt( lua_State *L )
 */
 static void set_info (lua_State *L) {
 	lua_pushliteral (L, "_COPYRIGHT");
-	lua_pushliteral (L, "Copyright (C) 2007-2013 PUC-Rio");
+	lua_pushliteral (L, "Copyright (C) 2007-2019 PUC-Rio");
 	lua_settable (L, -3);
 	lua_pushliteral (L, "_DESCRIPTION");
 	lua_pushliteral (L, "DES 56 cryptographic facilities for Lua");
 	lua_settable (L, -3);
 	lua_pushliteral (L, "_VERSION");
-	lua_pushliteral (L, "DES56 1.2");
+	lua_pushliteral (L, "DES56 1.3");
 	lua_settable (L, -3);
 }
 

src/md5.c

@@ -10,14 +10,6 @@
 #include <string.h>
 #include <time.h>
 
-#include <lua.h>
-#include <lauxlib.h>
-
-#if ! defined (LUA_VERSION_NUM) || LUA_VERSION_NUM < 501
-#include "compat-5.1.h"
-#endif
-
-
 #include "md5.h"
 
 

src/md5.def

@@ -1,5 +1,5 @@
 LIBRARY core.dll
 DESCRIPTION "LuaMD5"
-VERSION 1.2
+VERSION 1.3
 EXPORTS
-luaopen_md5
+luaopen_md5_core

src/md5.h

@@ -34,7 +34,7 @@ int  md5_update (md5_t *m, const char *message, size_t len);
 void md5_finish (md5_t *m, char output[HASHSIZE]);
 void md5 (const char *message, size_t len, char output[HASHSIZE]);
 
-LUALIB_API int luaopen_md5 (lua_State *L);
+LUALIB_API int luaopen_md5_core (lua_State *L);
 
 
 #endif

src/md5lib.c

@@ -172,13 +172,13 @@ static int decrypt (lua_State *L) {
 */
 static void set_info (lua_State *L) {
 	lua_pushliteral (L, "_COPYRIGHT");
-	lua_pushliteral (L, "Copyright (C) 2003-2013 PUC-Rio");
+	lua_pushliteral (L, "Copyright (C) 2003-2019 PUC-Rio");
 	lua_settable (L, -3);
 	lua_pushliteral (L, "_DESCRIPTION");
-	lua_pushliteral (L, "Basic cryptographic facilities");
+	lua_pushliteral (L, "Checksum facilities for Lua");
 	lua_settable (L, -3);
 	lua_pushliteral (L, "_VERSION");
-	lua_pushliteral (L, "MD5 1.2");
+	lua_pushliteral (L, "MD5 1.3");
 	lua_settable (L, -3);
 }
 

tests/test.lua

@@ -7,6 +7,7 @@ if string.find(_VERSION, "Lua 5.0") then
 	string.gmatch = string.gfind
 end
 local md5 = require"md5"
+io.write (md5._VERSION..' '.._VERSION..'\n')
 
 
 assert(md5.exor('', '') == '')
@@ -50,7 +51,7 @@ assert(md5.sumhexa(
 "12345678901234567890123456789012345678901234567890123456789012345678901234567890")
    == "57edf4a22be3c955ac49da2e2107b67a")
 
-print '+'
+io.write '+'
 
 
 
@@ -82,7 +83,7 @@ contchars(code)
 local seed = 'some_seed'
 assert(md5.crypt('a','a',seed) ~= md5.crypt('a','b',seed))
 
-print"MD5 OK"
+io.write'+'
 
 
 -- Testing DES 56
@@ -117,4 +118,4 @@ assert(des56.decrypt(des56.crypt(ascii, key), key) == ascii)
 key = string.sub(ascii, 2)
 assert(des56.decrypt(des56.crypt(ascii, key), key) == ascii)
 
-print"DES56 OK"
+io.write'+\n'