diff --git a/3rd/lua-mysqlaux/lua_mysqlaux.c b/3rd/lua-mysqlaux/lua_mysqlaux.c
deleted file mode 100755
index ba170ddb2..000000000
--- a/3rd/lua-mysqlaux/lua_mysqlaux.c
+++ /dev/null
@@ -1,372 +0,0 @@
-//
-//  lua_mysqlaux.c
-//
-//  Created by changfeng on 6/17/14.
-//  Copyright (c) 2014 changfeng. All rights reserved.
-//
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <lua.h>
-#include <lauxlib.h>
-
-#define SHA1SIZE       20
-#define ROTL(bits,word) (((word) << (bits)) | ((word) >> (32-(bits))))
-typedef unsigned int uint32_t;
-
-struct sha
-{
-    uint32_t digest[5];
-    uint32_t w[80];
-    uint32_t a,b,c,d,e,f;
-    int err;
-};
-
-
-static uint32_t padded_length_in_bits(uint32_t len)
-{
-    if(len%64 == 56)
-    {
-        len++;
-    }
-    while((len%64)!=56)
-    {
-        len++;
-    }
-    return len*8;
-}
-
-
-static int calculate_sha1(struct sha *sha1, const unsigned char *text, uint32_t length)
-{
-    unsigned int i,j;
-    unsigned char *buffer=NULL, *pbuffer=NULL;
-    uint32_t bits=0;
-    uint32_t temp=0,k=0;
-    uint32_t lb = length*8;
-    
-    if (!sha1)
-    {
-        return 0;
-    }
-    // initialize the default digest values
-    sha1->digest[0] = 0x67452301;
-    sha1->digest[1] = 0xEFCDAB89;
-    sha1->digest[2] = 0x98BADCFE;
-    sha1->digest[3] = 0x10325476;
-    sha1->digest[4] = 0xC3D2E1F0;
-    sha1->a=sha1->b=sha1->c=sha1->d=sha1->e=sha1->f=0;
-    if (!text || !length)
-    {
-        return 0;
-    }
-    
-    bits = padded_length_in_bits(length);
-    buffer = (unsigned char *) malloc((bits/8)+8);
-    memset(buffer,0,(bits/8)+8);
-    if(buffer == NULL)
-    {
-    	return 1;
-    }
-    pbuffer = buffer;
-    memcpy(buffer, text, length);
-    
-    
-    //add 1 on the last of the message..
-    *(buffer+length) = 0x80;
-    for(i=length+1; i<(bits/8); i++)
-    {
-        *(buffer+i) = 0x00;
-    }
-    
-    *(buffer +(bits/8)+4+0) = (lb>>24) & 0xFF;
-    *(buffer +(bits/8)+4+1) = (lb>>16) & 0xFF;
-    *(buffer +(bits/8)+4+2) = (lb>>8) & 0xFF;
-    *(buffer +(bits/8)+4+3) = (lb>>0) & 0xFF;
-    
-    
-    //main loop
-    for(i=0; i<((bits+64)/512); i++)
-    {
-        //first empty the block for each pass..
-        for(j=0; j<80; j++)
-        {
-            sha1->w[j] = 0x00;
-        }
-        
-        
-        //fill the first 16 words with the characters read directly from the buffer.
-        for(j=0; j<16; j++)
-        {
-            sha1->w[j] =buffer[j*4+0];
-            sha1->w[j] = sha1->w[j]<<8;
-            sha1->w[j] |= buffer[j*4+1];
-            sha1->w[j] = sha1->w[j]<<8;
-            sha1->w[j] |= buffer[j*4+2];
-            sha1->w[j] = sha1->w[j]<<8;
-            sha1->w[j] |= buffer[j*4+3];
-        }
-        
-        //fill the rest 64 words using the formula
-        for(j=16; j<80; j++)
-        {
-            sha1->w[j] = (ROTL(1,(sha1->w[j-3] ^ sha1->w[j-8] ^ sha1->w[j-14] ^ sha1->w[j-16])));
-        }
-        
-        
-        //initialize hash for this chunck reading that has been stored in the structure digest
-        sha1->a = sha1->digest[0];
-        sha1->b = sha1->digest[1];
-        sha1->c = sha1->digest[2];
-        sha1->d = sha1->digest[3];
-        sha1->e = sha1->digest[4];
-        
-		//for all the 80 32bit blocks calculate f and use k accordingly per specification.
-        for(j=0; j<80; j++)
-        {
-            if((j>=0) && (j<20))
-            {
-                sha1->f = ((sha1->b)&(sha1->c)) | ((~(sha1->b))&(sha1->d));
-                k = 0x5A827999;
-                
-            }
-            else if((j>=20) && (j<40))
-            {
-                sha1->f = (sha1->b)^(sha1->c)^(sha1->d);
-                k = 0x6ED9EBA1;
-            }
-            else if((j>=40) && (j<60))
-            {
-                sha1->f = ((sha1->b)&(sha1->c)) | ((sha1->b)&(sha1->d)) | ((sha1->c)&(sha1->d));
-                k = 0x8F1BBCDC;
-            }
-            else if((j>=60) && (j<80))
-            {
-                sha1->f = (sha1->b)^(sha1->c)^(sha1->d);
-                k = 0xCA62C1D6;
-            }
-            
-            temp = ROTL(5,(sha1->a)) + (sha1->f) + (sha1->e) + k + sha1->w[j];
-            sha1->e = (sha1->d);
-            sha1->d = (sha1->c);
-            sha1->c = ROTL(30,(sha1->b));
-            sha1->b = (sha1->a);
-            sha1->a = temp;
-            
-            //reset temp to 0 to be in safe side only, not mandatory.
-            temp =0x00;
-            
-            
-        }
-        
-        // append to total hash.
-        sha1->digest[0] += sha1->a;
-        sha1->digest[1] += sha1->b;
-        sha1->digest[2] += sha1->c;
-        sha1->digest[3] += sha1->d;
-        sha1->digest[4] += sha1->e;
-        
-        
-		//since we used 512bit size block per each pass, let us update the buffer pointer accordingly.
-        buffer = buffer+64;
-        
-    }
-    free(pbuffer);
-    return 0;
-}
-
-static void int2ch4(int intVal,unsigned char *result)
-{
-    result[0]= (unsigned char)((intVal>>24) & 0x000000ff);
-    result[1]= (unsigned char)((intVal>>16) & 0x000000ff);
-    result[2]= (unsigned char)((intVal>> 8) & 0x000000ff);
-    result[3]= (unsigned char)((intVal>> 0) & 0x000000ff);
-}
-
-
-static int sha1_bin (lua_State *L) {
-    const void * msg = NULL;
-    size_t len =0;
-
-    if( lua_gettop(L) != 1 ){
-        return 0;
-    }	
-    if( lua_isnil(L,1) ) {
-        msg = NULL;
-        len =0;
-    }else{
-        msg=luaL_checklstring(L,1,&len);
-    }
-    struct sha tmpsha;
-    calculate_sha1( &tmpsha, msg, (uint32_t)len);
-    unsigned char tmpret[SHA1SIZE+8];
-    memset(tmpret,0,SHA1SIZE+8);
-    int i=0;
-    for ( i=0; i<5; i++)
-    {
-        int2ch4(tmpsha.digest[i], tmpret+i*4);
-    }
-    
-    lua_pushlstring(L, (char *)tmpret, SHA1SIZE);
-    return 1;
-}
-
-static unsigned int num_escape_sql_str(unsigned char *dst, unsigned char *src, size_t size)
-{
-    unsigned int n =0;
-    while (size) {
-        /* the highest bit of all the UTF-8 chars
-         * is always 1 */
-        if ((*src & 0x80) == 0) {
-            switch (*src) {
-                case '\0':
-                case '\b':
-                case '\n':
-                case '\r':
-                case '\t':
-                case 26:  /* \z */
-                case '\\':
-                case '\'':
-                case '"':
-                    n++;
-                    break;
-                default:
-                    break;
-            }
-        }
-        src++;
-        size--;
-    }
-    return n;
-}
-static unsigned char*
-escape_sql_str(unsigned char *dst, unsigned char *src, size_t size)
-{
-    
-      while (size) {
-        if ((*src & 0x80) == 0) {
-            switch (*src) {
-                case '\0':
-                    *dst++ = '\\';
-                    *dst++ = '0';
-                    break;
-                    
-                case '\b':
-                    *dst++ = '\\';
-                    *dst++ = 'b';
-                    break;
-                    
-                case '\n':
-                    *dst++ = '\\';
-                    *dst++ = 'n';
-                    break;
-                    
-                case '\r':
-                    *dst++ = '\\';
-                    *dst++ = 'r';
-                    break;
-                    
-                case '\t':
-                    *dst++ = '\\';
-                    *dst++ = 't';
-                    break;
-                    
-                case 26:
-                    *dst++ = '\\';
-                    *dst++ = 'z';
-                    break;
-                    
-                case '\\':
-                    *dst++ = '\\';
-                    *dst++ = '\\';
-                    break;
-                    
-                case '\'':
-                    *dst++ = '\\';
-                    *dst++ = '\'';
-                    break;
-                    
-                case '"':
-                    *dst++ = '\\';
-                    *dst++ = '"';
-                    break;
-                    
-                default:
-                    *dst++ = *src;
-                    break;
-            }
-        } else {
-            *dst++ = *src;
-        }
-        src++;
-        size--;
-    } /* while (size) */
-    
-    return  dst;
-}
-
-
-
-
-static int
-quote_sql_str(lua_State *L)
-{
-    size_t                   len, dlen, escape;
-    unsigned char                  *p;
-    unsigned char                  *src, *dst;
-    
-    if (lua_gettop(L) != 1) {
-        return luaL_error(L, "expecting one argument");
-    }
-    
-    src = (unsigned char *) luaL_checklstring(L, 1, &len);
-    
-    if (len == 0) {
-        dst = (unsigned char *) "''";
-        dlen = sizeof("''") - 1;
-        lua_pushlstring(L, (char *) dst, dlen);
-        return 1;
-    }
-    
-    escape = num_escape_sql_str(NULL, src, len);
-    
-    dlen = sizeof("''") - 1 + len + escape;
-    p = lua_newuserdata(L, dlen);
-    
-    dst = p;
-    
-    *p++ = '\'';
-    
-    if (escape == 0) {
-        memcpy(p, src, len);
-        p+=len;
-    } else {
-        p = (unsigned char *) escape_sql_str(p, src, len);
-    }
-    
-    *p++ = '\'';
-    
-    if (p != dst + dlen) {
-        return luaL_error(L, "quote sql string error");
-    }
-    
-    lua_pushlstring(L, (char *) dst, p - dst);
-    
-    return 1;
-}
-
-
-static struct luaL_Reg mysqlauxlib[] = {
-    {"sha1_bin", sha1_bin},
-    {"quote_sql_str",quote_sql_str},
-    {NULL, NULL}
-};
-
-
-int luaopen_mysqlaux_c (lua_State *L) {
-    lua_newtable(L);
-    luaL_setfuncs(L, mysqlauxlib, 0);
-    return 1;
-}
-
diff --git a/Makefile b/Makefile
index ec52fcd39..0d0cd8559 100644
--- a/Makefile
+++ b/Makefile
@@ -123,7 +123,7 @@ $(LUA_CLIB_PATH)/sproto.so : lualib-src/sproto/sproto.c lualib-src/sproto/lsprot
 $(LUA_CLIB_PATH)/lpeg.so : 3rd/lpeg/lpcap.c 3rd/lpeg/lpcode.c 3rd/lpeg/lpprint.c 3rd/lpeg/lptree.c 3rd/lpeg/lpvm.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) -I3rd/lpeg $^ -o $@ 
 
-$(LUA_CLIB_PATH)/mysqlaux.so : 3rd/lua-mysqlaux/lua_mysqlaux.c | $(LUA_CLIB_PATH)
+$(LUA_CLIB_PATH)/mysqlaux.so : lualib-src/lua_mysqlaux.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) $^ -o $@	
 
 clean :
diff --git a/lualib-src/lua_mysqlaux.c b/lualib-src/lua_mysqlaux.c
new file mode 100755
index 000000000..31fabad83
--- /dev/null
+++ b/lualib-src/lua_mysqlaux.c
@@ -0,0 +1,170 @@
+//
+//  lua_mysqlaux.c
+//
+//  Created by changfeng on 6/17/14.
+//  Copyright (c) 2014 changfeng. All rights reserved.
+//
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <lua.h>
+#include <lauxlib.h>
+
+static unsigned int num_escape_sql_str(unsigned char *dst, unsigned char *src, size_t size)
+{
+    unsigned int n =0;
+    while (size) {
+        /* the highest bit of all the UTF-8 chars
+         * is always 1 */
+        if ((*src & 0x80) == 0) {
+            switch (*src) {
+                case '\0':
+                case '\b':
+                case '\n':
+                case '\r':
+                case '\t':
+                case 26:  /* \z */
+                case '\\':
+                case '\'':
+                case '"':
+                    n++;
+                    break;
+                default:
+                    break;
+            }
+        }
+        src++;
+        size--;
+    }
+    return n;
+}
+static unsigned char*
+escape_sql_str(unsigned char *dst, unsigned char *src, size_t size)
+{
+    
+      while (size) {
+        if ((*src & 0x80) == 0) {
+            switch (*src) {
+                case '\0':
+                    *dst++ = '\\';
+                    *dst++ = '0';
+                    break;
+                    
+                case '\b':
+                    *dst++ = '\\';
+                    *dst++ = 'b';
+                    break;
+                    
+                case '\n':
+                    *dst++ = '\\';
+                    *dst++ = 'n';
+                    break;
+                    
+                case '\r':
+                    *dst++ = '\\';
+                    *dst++ = 'r';
+                    break;
+                    
+                case '\t':
+                    *dst++ = '\\';
+                    *dst++ = 't';
+                    break;
+                    
+                case 26:
+                    *dst++ = '\\';
+                    *dst++ = 'z';
+                    break;
+                    
+                case '\\':
+                    *dst++ = '\\';
+                    *dst++ = '\\';
+                    break;
+                    
+                case '\'':
+                    *dst++ = '\\';
+                    *dst++ = '\'';
+                    break;
+                    
+                case '"':
+                    *dst++ = '\\';
+                    *dst++ = '"';
+                    break;
+                    
+                default:
+                    *dst++ = *src;
+                    break;
+            }
+        } else {
+            *dst++ = *src;
+        }
+        src++;
+        size--;
+    } /* while (size) */
+    
+    return  dst;
+}
+
+
+
+
+static int
+quote_sql_str(lua_State *L)
+{
+    size_t                   len, dlen, escape;
+    unsigned char                  *p;
+    unsigned char                  *src, *dst;
+    
+    if (lua_gettop(L) != 1) {
+        return luaL_error(L, "expecting one argument");
+    }
+    
+    src = (unsigned char *) luaL_checklstring(L, 1, &len);
+    
+    if (len == 0) {
+        dst = (unsigned char *) "''";
+        dlen = sizeof("''") - 1;
+        lua_pushlstring(L, (char *) dst, dlen);
+        return 1;
+    }
+    
+    escape = num_escape_sql_str(NULL, src, len);
+    
+    dlen = sizeof("''") - 1 + len + escape;
+    p = lua_newuserdata(L, dlen);
+    
+    dst = p;
+    
+    *p++ = '\'';
+    
+    if (escape == 0) {
+        memcpy(p, src, len);
+        p+=len;
+    } else {
+        p = (unsigned char *) escape_sql_str(p, src, len);
+    }
+    
+    *p++ = '\'';
+    
+    if (p != dst + dlen) {
+        return luaL_error(L, "quote sql string error");
+    }
+    
+    lua_pushlstring(L, (char *) dst, p - dst);
+    
+    return 1;
+}
+
+
+static struct luaL_Reg mysqlauxlib[] = {
+    {"quote_sql_str",quote_sql_str},
+    {NULL, NULL}
+};
+
+
+int luaopen_mysqlaux_c (lua_State *L) {
+    lua_newtable(L);
+    luaL_setfuncs(L, mysqlauxlib, 0);
+    return 1;
+}
+
diff --git a/lualib/mysql.lua b/lualib/mysql.lua
index b81e2ecca..58843e68a 100755
--- a/lualib/mysql.lua
+++ b/lualib/mysql.lua
@@ -6,7 +6,7 @@
 local socketchannel = require "socketchannel"
 local bit = require "bit32"
 local mysqlaux = require "mysqlaux.c"
-
+local crypt = require "crypt"
 
 
 local sub = string.sub
@@ -20,7 +20,7 @@ local bxor = bit.bxor
 local bor = bit.bor
 local lshift = bit.lshift
 local rshift = bit.rshift
-local sha1= mysqlaux.sha1_bin
+local sha1= crypt.sha1
 local concat = table.concat
 local unpack = unpack
 local setmetatable = setmetatable