+diff -Nur lua-5.1.4.orig/src/Makefile lua-5.1.4/src/Makefile
+--- lua-5.1.4.orig/src/Makefile 2009-04-27 00:36:06.000000000 +0200
++++ lua-5.1.4/src/Makefile 2009-04-27 00:47:54.000000000 +0200
+@@ -29,7 +29,7 @@
+ lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \
+ lundump.o lvm.o lzio.o lnum.o
+ LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
+- lstrlib.o loadlib.o linit.o lposix.o lbitlib.o
++ lstrlib.o loadlib.o linit.o lposix.o lbitlib.o md5.o md5lib.o
+
+ LUA_T= lua
+ LUA_O= lua.o
+diff -Nur lua-5.1.4.orig/src/linit.c lua-5.1.4/src/linit.c
+--- lua-5.1.4.orig/src/linit.c 2009-04-27 00:36:06.000000000 +0200
++++ lua-5.1.4/src/linit.c 2009-04-27 00:44:54.000000000 +0200
+@@ -25,6 +25,7 @@
+ {LUA_DBLIBNAME, luaopen_debug},
+ {LUA_POSIXLIBNAME, luaopen_posix},
+ {LUA_BITLIBNAME, luaopen_bit},
++ {LUA_MD5LIBNAME, luaopen_md5_core},
+ {NULL, NULL}
+ };
+
+diff -Nur lua-5.1.4.orig/src/lualib.h lua-5.1.4/src/lualib.h
+--- lua-5.1.4.orig/src/lualib.h 2009-04-27 00:36:06.000000000 +0200
++++ lua-5.1.4/src/lualib.h 2009-04-27 00:46:01.000000000 +0200
+@@ -45,6 +45,8 @@
+ #define LUA_BITLIBNAME "bit"
+ LUALIB_API int (luaopen_bit) (lua_State *L);
+
++#define LUA_MD5LIBNAME "md5"
++LUALIB_API int (luaopen_md5_core) (lua_State *L);
+
+ /* open all previous libraries */
+ LUALIB_API void (luaL_openlibs) (lua_State *L);
+diff -Nur lua-5.1.4.orig/src/md5.c lua-5.1.4/src/md5.c
+--- lua-5.1.4.orig/src/md5.c 1970-01-01 01:00:00.000000000 +0100
++++ lua-5.1.4/src/md5.c 2008-03-24 21:59:12.000000000 +0100
+@@ -0,0 +1,214 @@
++/**
++* $Id: md5.c,v 1.2 2008/03/24 20:59:12 mascarenhas Exp $
++* Hash function MD5
++* @author Marcela Ozorio Suarez, Roberto I.
++*/
++
++
++#include <string.h>
++
++#include "md5.h"
++
++
++#define WORD 32
++#define MASK 0xFFFFFFFF
++#if __STDC_VERSION__ >= 199901L
++#include <stdint.h>
++typedef uint32_t WORD32;
++#else
++typedef unsigned int WORD32;
++#endif
++
++
++/**
++* md5 hash function.
++* @param message: aribtary string.
++* @param len: message length.
++* @param output: buffer to receive the hash value. Its size must be
++* (at least) HASHSIZE.
++*/
++void md5 (const char *message, long len, char *output);
++
++
++
++/*
++** Realiza a rotacao no sentido horario dos bits da variavel 'D' do tipo WORD32.
++** Os bits sao deslocados de 'num' posicoes
++*/
++#define rotate(D, num) (D<<num) | (D>>(WORD-num))
++
++/*Macros que definem operacoes relizadas pelo algoritmo md5 */
++#define F(x, y, z) (((x) & (y)) | ((~(x)) & (z)))
++#define G(x, y, z) (((x) & (z)) | ((y) & (~(z))))
++#define H(x, y, z) ((x) ^ (y) ^ (z))
++#define I(x, y, z) ((y) ^ ((x) | (~(z))))
++
++
++/*vetor de numeros utilizados pelo algoritmo md5 para embaralhar bits */
++static const WORD32 T[64]={
++ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
++ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
++ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
++ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
++ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
++ 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
++ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
++ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
++ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
++ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
++ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
++ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
++ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
++ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
++ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
++ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
++};
++
++
++static void word32tobytes (const WORD32 *input, char *output) {
++ int j = 0;
++ while (j<4*4) {
++ WORD32 v = *input++;
++ output[j++] = (char)(v & 0xff); v >>= 8;
++ output[j++] = (char)(v & 0xff); v >>= 8;
++ output[j++] = (char)(v & 0xff); v >>= 8;
++ output[j++] = (char)(v & 0xff);
++ }
++}
++
++
++static void inic_digest(WORD32 *d) {
++ d[0] = 0x67452301;
++ d[1] = 0xEFCDAB89;
++ d[2] = 0x98BADCFE;
++ d[3] = 0x10325476;
++}
++
++
++/*funcao que implemeta os quatro passos principais do algoritmo MD5 */
++static void digest(const WORD32 *m, WORD32 *d) {
++ int j;
++ /*MD5 PASSO1 */
++ for (j=0; j<4*4; j+=4) {
++ d[0] = d[0]+ F(d[1], d[2], d[3])+ m[j] + T[j]; d[0]=rotate(d[0], 7);
++ d[0]+=d[1];
++ d[3] = d[3]+ F(d[0], d[1], d[2])+ m[(j)+1] + T[j+1]; d[3]=rotate(d[3], 12);
++ d[3]+=d[0];
++ d[2] = d[2]+ F(d[3], d[0], d[1])+ m[(j)+2] + T[j+2]; d[2]=rotate(d[2], 17);
++ d[2]+=d[3];
++ d[1] = d[1]+ F(d[2], d[3], d[0])+ m[(j)+3] + T[j+3]; d[1]=rotate(d[1], 22);
++ d[1]+=d[2];
++ }
++ /*MD5 PASSO2 */
++ for (j=0; j<4*4; j+=4) {
++ d[0] = d[0]+ G(d[1], d[2], d[3])+ m[(5*j+1)&0x0f] + T[(j-1)+17];
++ d[0] = rotate(d[0],5);
++ d[0]+=d[1];
++ d[3] = d[3]+ G(d[0], d[1], d[2])+ m[((5*(j+1)+1)&0x0f)] + T[(j+0)+17];
++ d[3] = rotate(d[3], 9);
++ d[3]+=d[0];
++ d[2] = d[2]+ G(d[3], d[0], d[1])+ m[((5*(j+2)+1)&0x0f)] + T[(j+1)+17];
++ d[2] = rotate(d[2], 14);
++ d[2]+=d[3];
++ d[1] = d[1]+ G(d[2], d[3], d[0])+ m[((5*(j+3)+1)&0x0f)] + T[(j+2)+17];
++ d[1] = rotate(d[1], 20);
++ d[1]+=d[2];
++ }
++ /*MD5 PASSO3 */
++ for (j=0; j<4*4; j+=4) {
++ d[0] = d[0]+ H(d[1], d[2], d[3])+ m[(3*j+5)&0x0f] + T[(j-1)+33];
++ d[0] = rotate(d[0], 4);
++ d[0]+=d[1];
++ d[3] = d[3]+ H(d[0], d[1], d[2])+ m[(3*(j+1)+5)&0x0f] + T[(j+0)+33];
++ d[3] = rotate(d[3], 11);
++ d[3]+=d[0];
++ d[2] = d[2]+ H(d[3], d[0], d[1])+ m[(3*(j+2)+5)&0x0f] + T[(j+1)+33];
++ d[2] = rotate(d[2], 16);
++ d[2]+=d[3];
++ d[1] = d[1]+ H(d[2], d[3], d[0])+ m[(3*(j+3)+5)&0x0f] + T[(j+2)+33];
++ d[1] = rotate(d[1], 23);
++ d[1]+=d[2];
++ }
++ /*MD5 PASSO4 */
++ for (j=0; j<4*4; j+=4) {
++ d[0] = d[0]+ I(d[1], d[2], d[3])+ m[(7*j)&0x0f] + T[(j-1)+49];
++ d[0] = rotate(d[0], 6);
++ d[0]+=d[1];
++ d[3] = d[3]+ I(d[0], d[1], d[2])+ m[(7*(j+1))&0x0f] + T[(j+0)+49];
++ d[3] = rotate(d[3], 10);
++ d[3]+=d[0];
++ d[2] = d[2]+ I(d[3], d[0], d[1])+ m[(7*(j+2))&0x0f] + T[(j+1)+49];
++ d[2] = rotate(d[2], 15);
++ d[2]+=d[3];
++ d[1] = d[1]+ I(d[2], d[3], d[0])+ m[(7*(j+3))&0x0f] + T[(j+2)+49];
++ d[1] = rotate(d[1], 21);
++ d[1]+=d[2];
++ }
++}
++
++
++static void bytestoword32 (WORD32 *x, const char *pt) {
++ int i;
++ for (i=0; i<16; i++) {
++ int j=i*4;
++ x[i] = (((WORD32)(unsigned char)pt[j+3] << 8 |
++ (WORD32)(unsigned char)pt[j+2]) << 8 |
++ (WORD32)(unsigned char)pt[j+1]) << 8 |
++ (WORD32)(unsigned char)pt[j];
++ }
++
++}
++
++
++static void put_length(WORD32 *x, long len) {
++ /* in bits! */
++ x[14] = (WORD32)((len<<3) & MASK);
++ x[15] = (WORD32)(len>>(32-3) & 0x7);
++}
++
++
++/*
++** returned status:
++* 0 - normal message (full 64 bytes)
++* 1 - enough room for 0x80, but not for message length (two 4-byte words)
++* 2 - enough room for 0x80 plus message length (at least 9 bytes free)
++*/
++static int converte (WORD32 *x, const char *pt, int num, int old_status) {
++ int new_status = 0;
++ char buff[64];
++ if (num<64) {
++ memcpy(buff, pt, num); /* to avoid changing original string */
++ memset(buff+num, 0, 64-num);
++ if (old_status == 0)
++ buff[num] = '\200';
++ new_status = 1;
++ pt = buff;
++ }
++ bytestoword32(x, pt);
++ if (num <= (64 - 9))
++ new_status = 2;
++ return new_status;
++}
++
++
++
++void md5 (const char *message, long len, char *output) {
++ WORD32 d[4];
++ int status = 0;
++ long i = 0;
++ inic_digest(d);
++ while (status != 2) {
++ WORD32 d_old[4];
++ WORD32 wbuff[16];
++ int numbytes = (len-i >= 64) ? 64 : len-i;
++ /*salva os valores do vetor digest*/
++ d_old[0]=d[0]; d_old[1]=d[1]; d_old[2]=d[2]; d_old[3]=d[3];
++ status = converte(wbuff, message+i, numbytes, status);
++ if (status == 2) put_length(wbuff, len);
++ digest(wbuff, d);
++ d[0]+=d_old[0]; d[1]+=d_old[1]; d[2]+=d_old[2]; d[3]+=d_old[3];
++ i += numbytes;
++ }
++ word32tobytes(d, output);
++}
++
+diff -Nur lua-5.1.4.orig/src/md5.h lua-5.1.4/src/md5.h
+--- lua-5.1.4.orig/src/md5.h 1970-01-01 01:00:00.000000000 +0100
++++ lua-5.1.4/src/md5.h 2009-04-27 00:49:13.000000000 +0200
+@@ -0,0 +1,20 @@
++/**
++* $Id: md5.h,v 1.2 2006/03/03 15:04:49 tomas Exp $
++* Cryptographic module for Lua.
++* @author Roberto Ierusalimschy
++*/
++
++
++#ifndef md5_h
++#define md5_h
++
++#include "lua.h"
++
++
++#define HASHSIZE 16
++
++void md5 (const char *message, long len, char *output);
++int luaopen_md5_core (lua_State *L);
++
++
++#endif
+diff -Nur lua-5.1.4.orig/src/md5lib.c lua-5.1.4/src/md5lib.c
+--- lua-5.1.4.orig/src/md5lib.c 1970-01-01 01:00:00.000000000 +0100
++++ lua-5.1.4/src/md5lib.c 2009-04-27 00:49:55.000000000 +0200
+@@ -0,0 +1,203 @@
++/**
++* $Id: md5lib.c,v 1.10 2008/05/12 20:51:27 carregal Exp $
++* Cryptographic and Hash functions for Lua
++* @author Roberto Ierusalimschy
++*/
++
++
++#include <stdlib.h>
++#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"
++
++
++/**
++* Hash function. Returns a hash for a given string.
++* @param message: arbitrary binary string.
++* @return A 128-bit hash string.
++*/
++static int lmd5 (lua_State *L) {
++ char buff[16];
++ size_t l;
++ const char *message = luaL_checklstring(L, 1, &l);
++ md5(message, l, buff);
++ lua_pushlstring(L, buff, 16L);
++ return 1;
++}
++
++
++/**
++* X-Or. Does a bit-a-bit exclusive-or of two strings.
++* @param s1: arbitrary binary string.
++* @param s2: arbitrary binary string with same length as s1.
++* @return a binary string with same length as s1 and s2,
++* where each bit is the exclusive-or of the corresponding bits in s1-s2.
++*/
++static int ex_or (lua_State *L) {
++ size_t l1, l2;
++ const char *s1 = luaL_checklstring(L, 1, &l1);
++ const char *s2 = luaL_checklstring(L, 2, &l2);
++ luaL_Buffer b;
++ luaL_argcheck( L, l1 == l2, 2, "lengths must be equal" );
++ luaL_buffinit(L, &b);
++ while (l1--) luaL_putchar(&b, (*s1++)^(*s2++));
++ luaL_pushresult(&b);
++ return 1;
++}
++
++
++static void checkseed (lua_State *L) {
++ if (lua_isnone(L, 3)) { /* no seed? */
++ time_t tm = time(NULL); /* for `random' seed */
++ lua_pushlstring(L, (char *)&tm, sizeof(tm));
++ }
++}
++
++
++#define MAXKEY 256
++#define BLOCKSIZE 16
++
++
++
++static int initblock (lua_State *L, const char *seed, int lseed, char *block) {
++ size_t lkey;
++ const char *key = luaL_checklstring(L, 2, &lkey);
++ if (lkey > MAXKEY)
++ luaL_error(L, "key too long (> %d)", MAXKEY);
++ memset(block, 0, BLOCKSIZE);
++ memcpy(block, seed, lseed);
++ memcpy(block+BLOCKSIZE, key, lkey);
++ return (int)lkey+BLOCKSIZE;
++}
++
++
++static void codestream (lua_State *L, const char *msg, size_t lmsg,
++ char *block, int lblock) {
++ luaL_Buffer b;
++ luaL_buffinit(L, &b);
++ while (lmsg > 0) {
++ char code[BLOCKSIZE];
++ int i;
++ md5(block, lblock, code);
++ for (i=0; i<BLOCKSIZE && lmsg > 0; i++, lmsg--)
++ code[i] ^= *msg++;
++ luaL_addlstring(&b, code, i);
++ memcpy(block, code, i); /* update seed */
++ }
++ luaL_pushresult(&b);
++}
++
++
++static void decodestream (lua_State *L, const char *cypher, size_t lcypher,
++ char *block, int lblock) {
++ luaL_Buffer b;
++ luaL_buffinit(L, &b);
++ while (lcypher > 0) {
++ char code[BLOCKSIZE];
++ int i;
++ md5(block, lblock, code); /* update seed */
++ for (i=0; i<BLOCKSIZE && lcypher > 0; i++, lcypher--)
++ code[i] ^= *cypher++;
++ luaL_addlstring(&b, code, i);
++ memcpy(block, cypher-i, i);
++ }
++ luaL_pushresult(&b);
++}
++
++
++/**
++* Encrypts a string. Uses the hash function md5 in CFB (Cipher-feedback
++* mode).
++* @param message: arbitrary binary string to be encrypted.
++* @param key: arbitrary binary string to be used as a key.
++* @param [seed]: optional arbitrary binary string to be used as a seed.
++* if no seed is provided, the function uses the result of
++* <code>time()</code> as a seed.
++* @return The cyphertext (as a binary string).
++*/
++static int crypt (lua_State *L) {
++ size_t lmsg;
++ const char *msg = luaL_checklstring(L, 1, &lmsg);
++ size_t lseed;
++ const char *seed;
++ int lblock;
++ char block[BLOCKSIZE+MAXKEY];
++ checkseed(L);
++ seed = luaL_checklstring(L, 3, &lseed);
++ if (lseed > BLOCKSIZE)
++ luaL_error(L, "seed too long (> %d)", BLOCKSIZE);
++ /* put seed and seed length at the beginning of result */
++ block[0] = (char)lseed;
++ memcpy(block+1, seed, lseed);
++ lua_pushlstring(L, block, lseed+1); /* to concat with result */
++ lblock = initblock(L, seed, lseed, block);
++ codestream(L, msg, lmsg, block, lblock);
++ lua_concat(L, 2);
++ return 1;
++}
++
++
++/**
++* Decrypts a string. For any message, key, and seed, we have that
++* <code>decrypt(crypt(msg, key, seed), key) == msg</code>.
++* @param cyphertext: message to be decrypted (this must be the result of
++ a previous call to <code>crypt</code>.
++* @param key: arbitrary binary string to be used as a key.
++* @return The plaintext.
++*/
++static int decrypt (lua_State *L) {
++ size_t lcyphertext;
++ const char *cyphertext = luaL_checklstring(L, 1, &lcyphertext);
++ size_t lseed = cyphertext[0];
++ const char *seed = cyphertext+1;
++ int lblock;
++ char block[BLOCKSIZE+MAXKEY];
++ luaL_argcheck(L, lcyphertext >= lseed+1 && lseed <= BLOCKSIZE, 1,
++ "invalid cyphered string");
++ cyphertext += lseed+1;
++ lcyphertext -= lseed+1;
++ lblock = initblock(L, seed, lseed, block);
++ decodestream(L, cyphertext, lcyphertext, block, lblock);
++ return 1;
++}
++
++
++/*
++** Assumes the table is on top of the stack.
++*/
++static void set_info (lua_State *L) {
++ lua_pushliteral (L, "_COPYRIGHT");
++ lua_pushliteral (L, "Copyright (C) 2003 PUC-Rio");
++ lua_settable (L, -3);
++ lua_pushliteral (L, "_DESCRIPTION");
++ lua_pushliteral (L, "Basic cryptographic facilities");
++ lua_settable (L, -3);
++ lua_pushliteral (L, "_VERSION");
++ lua_pushliteral (L, "MD5 1.1.2");
++ lua_settable (L, -3);
++}
++
++
++static struct luaL_reg md5lib[] = {
++ {"sum", lmd5},
++ {"exor", ex_or},
++ {"crypt", crypt},
++ {"decrypt", decrypt},
++ {NULL, NULL}
++};
++
++
++int luaopen_md5_core (lua_State *L) {
++ luaL_register(L, "md5", md5lib);
++ set_info (L);
++ return 1;
++}
++
projects / openwrt.git / commitdiff