Add new hashers and new natives

Replace the only hasher called MD5 with the ones listed below.

(+) CRC32, MD5, SHA1, SHA256, SHA3 224 BIT, SHA3 256 BIT, SHA3 384 BIT,
SHA3 512 BIT, Keccak 224 BIT, Keccak 256 BIT, Keccak 384 BIT and Keccak
512 BIT.

Add the natives listed below.

(+) hash_string(const string[], hashType:type, output[], const
outputSize)
(+) hash_file(const fileName, hashType:type, output[], const outputSize)
(+) is_arkshine_a_doctor() :  Hidden native, but a sign of recompense
for him being very active since 1.8.3 version of AMX Mod X
(+) get_system_endianness() :  Checks if the system is currently Big
Endian or Little Endian.

Add the following Enum.

(+) hashType {}
(+) sysEndianness {}

Deprecate the following natives.

(-) amx_md5()
(-) amx_md5_file()

It has been tested on Windows and Linux. The sanity checks seems to be
properly working, so no worries about them.

These are useful if people are using Sockets, cURLs or MySQLs in order
to compare hashes of different files On-line for further investigation.
You are not able to check if the files are older or newer, but you can
see if the content is different (Hash Checksum mismatch).

I'm glad I did this. Thanks to
This commit is contained in:
HttrckCldHKS
2015-02-15 08:44:33 +02:00
parent 5a7752a22e
commit c071f53f2c
28 changed files with 2941 additions and 621 deletions

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@ -69,7 +69,6 @@ binary.sources = [
'fakemeta.cpp',
'amxxfile.cpp',
'CLang.cpp',
'md5.cpp',
'emsg.cpp',
'CForward.cpp',
'CPlugin.cpp',
@ -100,6 +99,13 @@ binary.sources = [
'cvars.cpp',
'../public/memtools/CDetour/detours.cpp',
'../public/memtools/CDetour/asm/asm.c',
'../public/hashing/hashing.cpp',
'../public/hashing/hashers/crc32.cpp',
'../public/hashing/hashers/md5.cpp',
'../public/hashing/hashers/sha1.cpp',
'../public/hashing/hashers/sha256.cpp',
'../public/hashing/hashers/sha3.cpp',
'../public/hashing/hashers/keccak.cpp'
]
if builder.target_platform == 'windows':

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@ -318,8 +318,8 @@ void reparse_color(String* def)
// -- BAILOPAN
int CLangMngr::MergeDefinitionFile(const char *file)
{
FILE *fp = fopen(file, "rt");
if (!fp)
const char* md5buffer = hashFile(file, Hash_Md5);
if (!md5buffer)
{
CVector<md5Pair *>::iterator iter;
for (iter = FileList.begin(); iter != FileList.end(); ++iter)
@ -335,11 +335,6 @@ int CLangMngr::MergeDefinitionFile(const char *file)
return 0;
}
MD5 md5;
md5.update(fp); // closes for us
md5.finalize();
char md5buffer[33];
md5.hex_digest(md5buffer);
bool foundFlag = false;
CVector<md5Pair *>::iterator iter;
@ -366,7 +361,7 @@ int CLangMngr::MergeDefinitionFile(const char *file)
FileList.push_back(p);
}
fp = fopen(file, "rt");
FILE* fp = fopen(file, "rt");
if (!fp)
{
AMXXLOG_Log("[AMXX] Failed to re-open dictionary file: %s", file);

View File

@ -17,13 +17,17 @@ PROJECT = amxmodx
OBJECTS = meta_api.cpp CFile.cpp CVault.cpp vault.cpp float.cpp file.cpp modules.cpp \
CMisc.cpp CTask.cpp string.cpp amxmodx.cpp CEvent.cpp CCmd.cpp CLogEvent.cpp \
srvcmd.cpp strptime.cpp amxcore.cpp amxtime.cpp power.cpp amxxlog.cpp fakemeta.cpp \
amxxfile.cpp CLang.cpp md5.cpp emsg.cpp CForward.cpp CPlugin.cpp CModule.cpp \
amxxfile.cpp CLang.cpp emsg.cpp CForward.cpp CPlugin.cpp CModule.cpp \
CMenu.cpp util.cpp amx.cpp amxdbg.cpp natives.cpp newmenus.cpp debugger.cpp \
optimizer.cpp format.cpp messages.cpp libraries.cpp vector.cpp sorting.cpp \
nongpl_matches.cpp CFlagManager.cpp datastructs.cpp \
trie_natives.cpp CDataPack.cpp datapacks.cpp stackstructs.cpp \
CTextParsers.cpp textparse.cpp CvarManager.cpp cvars.cpp \
../public/memtools/CDetour/detours.cpp ../public/memtools/CDetour/asm/asm.c
../public/memtools/CDetour/detours.cpp ../public/memtools/CDetour/asm/asm.c \
../public/hashing/hashing.cpp ../public/hashing/hashers/crc32.cpp \
../public/hashing/hashers/md5.cpp ../public/hashing/hashers/sha1.cpp \
../public/hashing/hashers/sha256.cpp ../public/hashing/hashers/sha3.cpp \
../public/hashing/hashers/keccak.cpp
##############################################
### CONFIGURE ANY OTHER FLAGS/OPTIONS HERE ###
@ -38,8 +42,8 @@ CPP_OSX = clang
LINK = -Lzlib
INCLUDE = -I. -I../public/amtl -I$(HLSDK) -I$(HLSDK)/common -I$(HLSDK)/dlls -I$(HLSDK)/engine -I$(HLSDK)/game_shared \
-I$(HLSDK)/public -I$(MM_ROOT)
INCLUDE = -I. -I../public/amtl -I../public/hashing -I$(HLSDK) -I$(HLSDK)/common -I$(HLSDK)/dlls \
-I$(HLSDK)/engine -I$(HLSDK)/game_shared -I$(HLSDK)/public -I$(MM_ROOT)
################################################
### DO NOT EDIT BELOW HERE FOR MOST PROJECTS ###

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@ -1440,41 +1440,64 @@ static cell AMX_NATIVE_CALL get_plugin(AMX *amx, cell *params) /* 11 param */
static cell AMX_NATIVE_CALL amx_md5(AMX *amx, cell *params)
{
int len = 0;
int len;
char *str = get_amxstring(amx, params[1], 0, len);
char buffer[33];
const char *hash = hashString((const char *)str, len, Hash_Md5);
MD5 md5;
md5.update((unsigned char *)str, len);
md5.finalize();
md5.hex_digest(buffer);
return set_amxstring(amx, params[2], buffer, 32);
return set_amxstring(amx, params[2], hash, 32);
}
static cell AMX_NATIVE_CALL amx_md5_file(AMX *amx, cell *params)
{
int len = 0;
int len;
char *str = get_amxstring(amx, params[1], 0, len);
char buffer[33];
char file[255];
build_pathname_r(file, sizeof(file)-1, "%s", str);
FILE *fp = fopen(file, "rb");
if (!fp)
const char *hash = hashFile((const char *)file, Hash_Md5);
if (!hash)
{
LogError(amx, AMX_ERR_NATIVE, "Cant open file \"%s\"", file);
return 0;
}
MD5 md5;
md5.update(fp); //closes for you
md5.finalize();
md5.hex_digest(buffer);
return set_amxstring(amx, params[2], hash, 32);
}
return set_amxstring(amx, params[2], buffer, 32);
static cell AMX_NATIVE_CALL amx_hash_string(AMX *amx, cell *params)
{
int len;
char *str = get_amxstring(amx, params[1], 0, len);
HashType type = (HashType)params[2];
const char *hash = hashString((const char *)str, len, type);
if (!hash)
{
LogError(amx, AMX_ERR_NATIVE, "Cant hash string \"%s\"", str);
return 0;
}
return set_amxstring(amx, params[3], hash, params[4]);
}
static cell AMX_NATIVE_CALL amx_hash_file(AMX *amx, cell *params)
{
int len;
char *str = get_amxstring(amx, params[1], 0, len);
char file[255];
build_pathname_r(file, sizeof(file)-1, "%s", str);
HashType type = (HashType)params[2];
const char *hash = hashFile((const char *)file, type);
if (!hash)
{
LogError(amx, AMX_ERR_NATIVE, "Cant open file \"%s\"", file);
return 0;
}
return set_amxstring(amx, params[3], hash, params[4]);
}
static cell AMX_NATIVE_CALL get_pluginsnum(AMX *amx, cell *params)
@ -4535,6 +4558,8 @@ AMX_NATIVE_INFO amxmodx_Natives[] =
{"log_to_file", log_to_file},
{"md5", amx_md5},
{"md5_file", amx_md5_file},
{"hash_string", amx_hash_string},
{"hash_file", amx_hash_file},
{"module_exists", module_exists},
{"mkdir", amx_mkdir},
{"next_hudchannel", next_hudchannel},

View File

@ -29,7 +29,7 @@
#endif
#endif
#include "md5.h"
#include "hashing.h"
#include "CVector.h"
#include "CList.h"
#include "CQueue.h"

View File

@ -1,474 +0,0 @@
// MD5.CC - source code for the C++/object oriented translation and
// modification of MD5.
// Translation and modification (c) 1995 by Mordechai T. Abzug
// This translation/ modification is provided "as is," without express or
// implied warranty of any kind.
// The translator/ modifier does not claim (1) that MD5 will do what you think
// it does; (2) that this translation/ modification is accurate; or (3) that
// this software is "merchantible." (Language for this disclaimer partially
// copied from the disclaimer below).
/* based on:
MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
MDDRIVER.C - test driver for MD2, MD4 and MD5
Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
rights reserved.
License to copy and use this software is granted provided that it
is identified as the "RSA Data Security, Inc. MD5 Message-Digest
Algorithm" in all material mentioning or referencing this software
or this function.
License is also granted to make and use derivative works provided
that such works are identified as "derived from the RSA Data
Security, Inc. MD5 Message-Digest Algorithm" in all material
mentioning or referencing the derived work.
RSA Data Security, Inc. makes no representations concerning either
the merchantability of this software or the suitability of this
software for any particular purpose. It is provided "as is"
without express or implied warranty of any kind.
These notices must be retained in any copies of any part of this
documentation and/or software.
*/
#include "md5.h"
#include <assert.h>
#include <string.h>
// MD5 simple initialization method
MD5::MD5(){
init();
}
// MD5 block update operation. Continues an MD5 message-digest
// operation, processing another message block, and updating the
// context.
void MD5::update (uint1 *input, uint4 input_length) {
uint4 input_index, buffer_index;
uint4 buffer_space; // how much space is left in buffer
if (finalized){ // so we can't update!
/*cerr << "MD5::update: Can't update a finalized digest!" << endl;*/
return;
}
// Compute number of bytes mod 64
buffer_index = (unsigned int)((count[0] >> 3) & 0x3F);
// Update number of bits
if ( (count[0] += ((uint4) input_length << 3))<((uint4) input_length << 3) )
count[1]++;
count[1] += ((uint4)input_length >> 29);
buffer_space = 64 - buffer_index; // how much space is left in buffer
// Transform as many times as possible.
if (input_length >= buffer_space) { // ie. we have enough to fill the buffer
// fill the rest of the buffer and transform
memcpy (buffer + buffer_index, input, buffer_space);
transform (buffer);
// now, transform each 64-byte piece of the input, bypassing the buffer
for (input_index = buffer_space; input_index + 63 < input_length;
input_index += 64)
transform (input+input_index);
buffer_index = 0; // so we can buffer remaining
}
else
input_index=0; // so we can buffer the whole input
// and here we do the buffering:
memcpy(buffer+buffer_index, input+input_index, input_length-input_index);
}
// MD5 update for files.
// Like above, except that it works on files (and uses above as a primitive.)
void MD5::update(FILE *file){
unsigned char buffer[1024];
int len;
while ((len=fread(buffer, 1, 1024, file)))
update(buffer, len);
fclose (file);
}
// MD5 finalization. Ends an MD5 message-digest operation, writing the
// the message digest and zeroizing the context.
void MD5::finalize (){
unsigned char bits[8];
unsigned int index, padLen;
static uint1 PADDING[64]={
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
if (finalized){
/* cerr << "MD5::finalize: Already finalized this digest!" << endl;*/
return;
}
// Save number of bits
encode (bits, count, 8);
// Pad out to 56 mod 64.
index = (uint4) ((count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
update (PADDING, padLen);
// Append length (before padding)
update (bits, 8);
// Store state in digest
encode (digest, state, 16);
// Zeroize sensitive information
memset (buffer, 0, sizeof(*buffer));
finalized=1;
}
MD5::MD5(FILE *file){
init(); // must be called be all constructors
update(file);
finalize ();
}
unsigned char *MD5::raw_digest(){
uint1 *s = new uint1[16];
if (!finalized){
/* cerr << "MD5::raw_digest: Can't get digest if you haven't "<<
"finalized the digest!" <<endl;*/
return ( (unsigned char*) "");
}
memcpy(s, digest, 16);
return s;
}
const char *MD5::hex_digest(){
int i;
char *s= new char[33];
if (!finalized){
/* cerr << "MD5::hex_digest: Can't get digest if you haven't "<<
"finalized the digest!" <<endl;*/
return "";
}
for (i=0; i<16; i++)
sprintf(s+i*2, "%02x", digest[i]);
s[32]='\0';
return s;
}
const char *MD5::hex_digest(char buffer[33]){
int i;
if (!finalized)
{
/* cerr << "MD5::hex_digest: Can't get digest if you haven't "<<
"finalized the digest!" <<endl;*/
return "";
}
for (i=0; i<16; i++)
sprintf(buffer+i*2, "%02x", digest[i]);
buffer[32]='\0';
return buffer;
}
// PRIVATE METHODS:
void MD5::init(){
finalized=0; // we just started!
// Nothing counted, so count=0
count[0] = 0;
count[1] = 0;
// Load magic initialization constants.
state[0] = 0x67452301;
state[1] = 0xefcdab89;
state[2] = 0x98badcfe;
state[3] = 0x10325476;
}
// Constants for MD5Transform routine.
// Although we could use C++ style constants, defines are actually better,
// since they let us easily evade scope clashes.
#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21
// MD5 basic transformation. Transforms state based on block.
void MD5::transform (uint1 block[64]){
uint4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
decode (x, block, 64);
assert(!finalized); // not just a user error, since the method is private
/* Round 1 */
FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
/* Round 2 */
GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
/* Round 3 */
HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
/* Round 4 */
II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
// Zeroize sensitive information.
memset ( (uint1 *) x, 0, sizeof(x));
}
// Encodes input (UINT4) into output (unsigned char). Assumes len is
// a multiple of 4.
void MD5::encode (uint1 *output, uint4 *input, uint4 len) {
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4) {
output[j] = (uint1) (input[i] & 0xff);
output[j+1] = (uint1) ((input[i] >> 8) & 0xff);
output[j+2] = (uint1) ((input[i] >> 16) & 0xff);
output[j+3] = (uint1) ((input[i] >> 24) & 0xff);
}
}
// Decodes input (unsigned char) into output (UINT4). Assumes len is
// a multiple of 4.
void MD5::decode (uint4 *output, uint1 *input, uint4 len){
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((uint4)input[j]) | (((uint4)input[j+1]) << 8) |
(((uint4)input[j+2]) << 16) | (((uint4)input[j+3]) << 24);
}
// Note: Replace "for loop" with standard memcpy if possible.
void MD5::memcpy (uint1 *output, uint1 *input, uint4 len){
unsigned int i;
for (i = 0; i < len; i++)
output[i] = input[i];
}
// Note: Replace "for loop" with standard memset if possible.
void MD5::memset (uint1 *output, uint1 value, uint4 len){
unsigned int i;
for (i = 0; i < len; i++)
output[i] = value;
}
// ROTATE_LEFT rotates x left n bits.
inline unsigned int MD5::rotate_left (uint4 x, uint4 n){
return (x << n) | (x >> (32-n)) ;
}
// F, G, H and I are basic MD5 functions.
inline unsigned int MD5::F (uint4 x, uint4 y, uint4 z){
return (x & y) | (~x & z);
}
inline unsigned int MD5::G (uint4 x, uint4 y, uint4 z){
return (x & z) | (y & ~z);
}
inline unsigned int MD5::H (uint4 x, uint4 y, uint4 z){
return x ^ y ^ z;
}
inline unsigned int MD5::I (uint4 x, uint4 y, uint4 z){
return y ^ (x | ~z);
}
// FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
// Rotation is separate from addition to prevent recomputation.
inline void MD5::FF(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += F(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::GG(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += G(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::HH(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += H(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += I(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}

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@ -1,105 +0,0 @@
// MD5.CC - source code for the C++/object oriented translation and
// modification of MD5.
// Translation and modification (c) 1995 by Mordechai T. Abzug
// This translation/ modification is provided "as is," without express or
// implied warranty of any kind.
// The translator/ modifier does not claim (1) that MD5 will do what you think
// it does; (2) that this translation/ modification is accurate; or (3) that
// this software is "merchantible." (Language for this disclaimer partially
// copied from the disclaimer below).
/* based on:
MD5.H - header file for MD5C.C
MDDRIVER.C - test driver for MD2, MD4 and MD5
Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
rights reserved.
License to copy and use this software is granted provided that it
is identified as the "RSA Data Security, Inc. MD5 Message-Digest
Algorithm" in all material mentioning or referencing this software
or this function.
License is also granted to make and use derivative works provided
that such works are identified as "derived from the RSA Data
Security, Inc. MD5 Message-Digest Algorithm" in all material
mentioning or referencing the derived work.
RSA Data Security, Inc. makes no representations concerning either
the merchantability of this software or the suitability of this
software for any particular purpose. It is provided "as is"
without express or implied warranty of any kind.
These notices must be retained in any copies of any part of this
documentation and/or software.
*/
#include <stdio.h>
//#include <fstream.h>
//#include <iostream.h>
class MD5 {
public:
// methods for controlled operation:
MD5 (); // simple initializer
void update (unsigned char *input, unsigned int input_length);
void update (FILE *file);
void finalize ();
// constructors for special circumstances. All these constructors finalize
// the MD5 context.
MD5 (unsigned char *string); // digest string, finalize
MD5 (FILE *file); // digest file, close, finalize
// methods to acquire finalized result
unsigned char *raw_digest (); // digest as a 16-byte binary array
const char *hex_digest (); // digest as a 33-byte ascii-hex string
const char *hex_digest (char buffer[33]); //same as above, passing buffer
private:
// first, some types:
typedef unsigned int uint4; // assumes integer is 4 words long
typedef unsigned short int uint2; // assumes short integer is 2 words long
typedef unsigned char uint1; // assumes char is 1 word long
// next, the private data:
uint4 state[4];
uint4 count[2]; // number of *bits*, mod 2^64
uint1 buffer[64]; // input buffer
uint1 digest[16];
uint1 finalized;
// last, the private methods, mostly static:
void init (); // called by all constructors
void transform (uint1 *buffer); // does the real update work. Note
// that length is implied to be 64.
static void encode (uint1 *dest, uint4 *src, uint4 length);
static void decode (uint4 *dest, uint1 *src, uint4 length);
static void memcpy (uint1 *dest, uint1 *src, uint4 length);
static void memset (uint1 *start, uint1 val, uint4 length);
static inline uint4 rotate_left (uint4 x, uint4 n);
static inline uint4 F (uint4 x, uint4 y, uint4 z);
static inline uint4 G (uint4 x, uint4 y, uint4 z);
static inline uint4 H (uint4 x, uint4 y, uint4 z);
static inline uint4 I (uint4 x, uint4 y, uint4 z);
static inline void FF (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void GG (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void HH (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
static inline void II (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
};

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@ -149,7 +149,7 @@
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View File

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