[Project64] MD5.cpp auto code clean up
This commit is contained in:
zilmar
parent
17b24f299f
commit
22fc35d49c
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@ -16,29 +16,28 @@
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MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
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MDDRIVER.C - test driver for MD2, MD4 and MD5
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Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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*/
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#include "stdafx.h"
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#include <TChar.H>
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@ -46,237 +45,213 @@ documentation and/or software.
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// MD5 simple initialization method
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MD5::MD5(){
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init();
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init();
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}
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MD5::~MD5()
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{
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}
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// MD5 block update operation. Continues an MD5 message-digest
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// operation, processing another message block, and updating the
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// context.
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void MD5::update (const uint1 *input, uint4 input_length) {
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void MD5::update(const uint1 *input, uint4 input_length) {
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uint4 input_index, buffer_index;
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uint4 buffer_space; // how much space is left in buffer
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uint4 input_index, buffer_index;
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uint4 buffer_space; // how much space is left in buffer
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if (finalized){ // so we can't update!
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WriteTrace(TraceError, _T("MD5::update: Can't update a finalized digest!"));
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return;
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}
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if (finalized){ // so we can't update!
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WriteTrace(TraceError, _T("MD5::update: Can't update a finalized digest!"));
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return;
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}
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// Compute number of bytes mod 64
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buffer_index = (unsigned int)((count[0] >> 3) & 0x3F);
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// Compute number of bytes mod 64
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buffer_index = (unsigned int)((count[0] >> 3) & 0x3F);
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// Update number of bits
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if ((count[0] += ((uint4)input_length << 3)) < ((uint4)input_length << 3))
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count[1]++;
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// Update number of bits
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if ( (count[0] += ((uint4) input_length << 3))<((uint4) input_length << 3) )
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count[1]++;
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count[1] += ((uint4)input_length >> 29);
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count[1] += ((uint4)input_length >> 29);
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buffer_space = 64 - buffer_index; // how much space is left in buffer
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// Transform as many times as possible.
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if (input_length >= buffer_space) { // ie. we have enough to fill the buffer
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// fill the rest of the buffer and transform
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memcpy(buffer + buffer_index, (unsigned char *)input, buffer_space);
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transform(buffer);
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buffer_space = 64 - buffer_index; // how much space is left in buffer
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// now, transform each 64-byte piece of the input, bypassing the buffer
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for (input_index = buffer_space; input_index + 63 < input_length;
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input_index += 64)
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transform((unsigned char *)(input + input_index));
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// Transform as many times as possible.
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if (input_length >= buffer_space) { // ie. we have enough to fill the buffer
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// fill the rest of the buffer and transform
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memcpy (buffer + buffer_index, (unsigned char *)input, buffer_space);
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transform (buffer);
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buffer_index = 0; // so we can buffer remaining
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}
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else
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input_index = 0; // so we can buffer the whole input
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// now, transform each 64-byte piece of the input, bypassing the buffer
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for (input_index = buffer_space; input_index + 63 < input_length;
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input_index += 64)
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transform ((unsigned char *)(input+input_index));
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buffer_index = 0; // so we can buffer remaining
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}
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else
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input_index=0; // so we can buffer the whole input
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// and here we do the buffering:
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memcpy(buffer+buffer_index, (unsigned char *)(input+input_index), input_length-input_index);
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// and here we do the buffering:
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memcpy(buffer + buffer_index, (unsigned char *)(input + input_index), input_length - input_index);
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}
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// MD5 update for files.
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// Like above, except that it works on files (and uses above as a primitive.)
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void MD5::update(FILE *file){
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unsigned char buffer[1024];
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int len;
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unsigned char buffer[1024];
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int len;
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do
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{
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len = (int)fread(buffer, 1, 1024, file);
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if (len)
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{
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update(buffer, len);
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}
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} while (len);
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fclose (file);
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do
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{
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len = (int)fread(buffer, 1, 1024, file);
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if (len)
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{
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update(buffer, len);
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}
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} while (len);
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fclose(file);
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}
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// MD5 finalization. Ends an MD5 message-digest operation, writing the
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// the message digest and zeroizing the context.
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void MD5::finalize (){
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unsigned char bits[8];
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unsigned int index, padLen;
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static uint1 PADDING[64]={
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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void MD5::finalize(){
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unsigned char bits[8];
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unsigned int index, padLen;
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static uint1 PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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if (finalized){
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WriteTrace(TraceError, _T("MD5::finalize: Already finalized this digest!"));
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return;
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}
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if (finalized){
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WriteTrace(TraceError, _T("MD5::finalize: Already finalized this digest!"));
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return;
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}
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// Save number of bits
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encode (bits, count, 8);
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// Save number of bits
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encode(bits, count, 8);
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// Pad out to 56 mod 64.
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index = (uint4) ((count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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update (PADDING, padLen);
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// Pad out to 56 mod 64.
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index = (uint4)((count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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update(PADDING, padLen);
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// Append length (before padding)
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update (bits, 8);
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// Append length (before padding)
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update(bits, 8);
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// Store state in digest
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encode (digest, state, 16);
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// Store state in digest
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encode(digest, state, 16);
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// Zeroize sensitive information
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memset (buffer, 0, sizeof(*buffer));
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finalized=1;
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// Zeroize sensitive information
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memset(buffer, 0, sizeof(*buffer));
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finalized = 1;
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}
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MD5::MD5(CPath File){
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init(); // must be called be all constructors
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if (File.Exists())
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{
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FILE * fp = fopen((LPCTSTR)File,_T("rb"));
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if (fp)
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{
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update(fp);
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}
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}
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finalize ();
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init(); // must be called be all constructors
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if (File.Exists())
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{
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FILE * fp = fopen((LPCTSTR)File, _T("rb"));
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if (fp)
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{
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update(fp);
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}
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}
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finalize();
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}
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MD5::MD5(FILE *file){
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init(); // must be called be all constructors
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update(file);
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finalize ();
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init(); // must be called be all constructors
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update(file);
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finalize();
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}
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MD5::MD5(const unsigned char *input, unsigned int input_length)
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{
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init(); // must called by all constructors
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update (input,input_length);
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finalize();
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init(); // must called by all constructors
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update(input, input_length);
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finalize();
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}
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MD5::MD5(const stdstr & string)
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{
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init(); // must called by all constructors
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update ((const unsigned char *)string.c_str(),string.length());
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finalize();
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init(); // must called by all constructors
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update((const unsigned char *)string.c_str(), string.length());
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finalize();
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}
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const unsigned char *MD5::raw_digest()
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{
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if (!finalized){
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WriteTrace(TraceError, _T("MD5::raw_digest: Can't get digest if you haven't finalized the digest!"));
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return ( (unsigned char*) "");
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}
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return digest;
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if (!finalized){
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WriteTrace(TraceError, _T("MD5::raw_digest: Can't get digest if you haven't finalized the digest!"));
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return ((unsigned char*) "");
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}
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return digest;
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}
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void MD5::get_digest(MD5Digest& extdigest)
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{
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if (!finalized)
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{
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WriteTrace(TraceError,_T("MD5::get_digest: Can't get digest if you haven't finalized the digest!"));
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memset(extdigest.digest, 0, sizeof(extdigest.digest));
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return;
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}
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if (!finalized)
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{
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WriteTrace(TraceError, _T("MD5::get_digest: Can't get digest if you haven't finalized the digest!"));
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memset(extdigest.digest, 0, sizeof(extdigest.digest));
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return;
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}
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memcpy(extdigest.digest, digest, 16);
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memcpy(extdigest.digest, digest, 16);
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}
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const char *MD5::hex_digest()
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{
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if (m_hex_digest.length())
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{
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return m_hex_digest.c_str();
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}
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if (m_hex_digest.length())
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{
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return m_hex_digest.c_str();
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}
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if (!finalized)
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{
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WriteTrace(TraceError,_T("MD5::hex_digest: Can't get digest if you haven't finalized the digest!"));
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return "";
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}
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char c[33];
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memset((unsigned char *)c, 0, 33);
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for (int i = 0; i < 16; i++)
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{
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sprintf(c + i * 2, "%02X", digest[i]);
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}
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if (!finalized)
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{
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WriteTrace(TraceError, _T("MD5::hex_digest: Can't get digest if you haven't finalized the digest!"));
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return "";
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}
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char c[33];
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memset((unsigned char *)c, 0, 33);
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for (int i = 0; i < 16; i++)
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{
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sprintf(c + i * 2, "%02X", digest[i]);
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}
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c[32] = '\0';
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m_hex_digest = c;
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c[32] = '\0';
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m_hex_digest = c;
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return m_hex_digest.c_str();
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return m_hex_digest.c_str();
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}
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// PRIVATE METHODS:
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void MD5::init(){
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finalized=0; // we just started!
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finalized = 0; // we just started!
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// Nothing counted, so count=0
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count[0] = 0;
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count[1] = 0;
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// Nothing counted, so count=0
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count[0] = 0;
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count[1] = 0;
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// Load magic initialization constants.
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state[0] = 0x67452301;
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state[1] = 0xefcdab89;
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state[2] = 0x98badcfe;
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state[3] = 0x10325476;
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// Load magic initialization constants.
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state[0] = 0x67452301;
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state[1] = 0xefcdab89;
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state[2] = 0x98badcfe;
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state[3] = 0x10325476;
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::memset(digest, 0, sizeof(digest));
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::memset(buffer, 0, sizeof(buffer));
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::memset(digest, 0, sizeof(digest));
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::memset(buffer, 0, sizeof(buffer));
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m_hex_digest = NULL;
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m_hex_digest = NULL;
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}
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// Constants for MD5Transform routine.
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// Although we could use C++ style constants, defines are actually better,
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// since they let us easily evade scope clashes.
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@ -298,209 +273,181 @@ void MD5::init(){
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#define S43 15
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#define S44 21
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// MD5 basic transformation. Transforms state based on block.
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void MD5::transform (uint1 block[64]){
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void MD5::transform(uint1 block[64]){
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uint4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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uint4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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decode(x, block, 64);
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decode (x, block, 64);
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//ATLASSERT(!finalized); // not just a user error, since the method is private
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//ATLASSERT(!finalized); // not just a user error, since the method is private
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/* Round 1 */
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FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
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FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
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FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
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FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
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FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
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FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
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FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
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FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
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FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
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FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
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FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
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FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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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 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 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 */
|
||||
|
||||
/* 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));
|
||||
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) {
|
||||
void MD5::encode(uint1 *output, uint4 *input, uint4 len) {
|
||||
unsigned int i, j;
|
||||
|
||||
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);
|
||||
}
|
||||
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){
|
||||
void MD5::decode(uint4 *output, uint1 *input, uint4 len){
|
||||
unsigned int i, j;
|
||||
|
||||
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);
|
||||
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){
|
||||
void MD5::memcpy(uint1 *output, uint1 *input, uint4 len){
|
||||
unsigned int i;
|
||||
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
output[i] = input[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){
|
||||
void MD5::memset(uint1 *output, uint1 value, uint4 len){
|
||||
unsigned int i;
|
||||
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
output[i] = value;
|
||||
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)) ;
|
||||
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::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::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::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);
|
||||
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;
|
||||
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;
|
||||
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;
|
||||
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;
|
||||
uint4 s, uint4 ac){
|
||||
a += I(b, c, d) + x + ac;
|
||||
a = rotate_left(a, s) + b;
|
||||
}
|
||||
|
|
@ -54,13 +54,13 @@ struct MD5Digest
|
|||
bool IsClear()
|
||||
{
|
||||
int isClear = 0;
|
||||
for (int i=0; i < 16; i++)
|
||||
for (int i = 0; i < 16; i++)
|
||||
{
|
||||
isClear += digest[i];
|
||||
}
|
||||
return (isClear == 0);
|
||||
}
|
||||
std::string String ( void )
|
||||
std::string String(void)
|
||||
{
|
||||
char s[33];
|
||||
|
||||
|
|
@ -68,15 +68,15 @@ struct MD5Digest
|
|||
|
||||
for (int i = 0; i < 16; i++)
|
||||
{
|
||||
sprintf(s+i*2, "%02X", digest[i]);
|
||||
sprintf(s + i * 2, "%02X", digest[i]);
|
||||
}
|
||||
s[32]='\0';
|
||||
s[32] = '\0';
|
||||
|
||||
return s;
|
||||
}
|
||||
};
|
||||
|
||||
struct MD5Digest_less : std::binary_function<MD5Digest, MD5Digest, bool>
|
||||
struct MD5Digest_less : std::binary_function < MD5Digest, MD5Digest, bool >
|
||||
{
|
||||
bool operator()(const MD5Digest& x, const MD5Digest& y) const
|
||||
{
|
||||
|
|
@ -88,24 +88,24 @@ class MD5
|
|||
{
|
||||
public:
|
||||
// methods for controlled operation:
|
||||
MD5 (); // simple initializer
|
||||
~MD5 ();
|
||||
void update (const unsigned char *input, unsigned int input_length);
|
||||
void update (FILE *file);
|
||||
void finalize ();
|
||||
MD5(); // simple initializer
|
||||
~MD5();
|
||||
void update(const 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 (CPath File); // digest File, finalize
|
||||
MD5 (const unsigned char *string); // digest string, finalize
|
||||
MD5 (FILE *file); // digest file, close, finalize
|
||||
MD5 (const unsigned char *input, unsigned int input_length);
|
||||
MD5 (const stdstr & string);
|
||||
MD5(CPath File); // digest File, finalize
|
||||
MD5(const unsigned char *string); // digest string, finalize
|
||||
MD5(FILE *file); // digest file, close, finalize
|
||||
MD5(const unsigned char *input, unsigned int input_length);
|
||||
MD5(const stdstr & string);
|
||||
|
||||
// methods to acquire finalized result
|
||||
void get_digest(MD5Digest& extdigest); //Digest into a digest structure
|
||||
const unsigned char *raw_digest (); // digest as a 16-byte binary array
|
||||
const char * hex_digest (); // digest as a 33-byte ascii-hex string
|
||||
const unsigned char *raw_digest(); // digest as a 16-byte binary array
|
||||
const char * hex_digest(); // digest as a 33-byte ascii-hex string
|
||||
|
||||
private:
|
||||
|
||||
|
|
@ -123,26 +123,26 @@ private:
|
|||
stdstr m_hex_digest;
|
||||
|
||||
// last, the private methods, mostly static:
|
||||
void init (); // called by all constructors
|
||||
void transform (uint1 *buffer); // does the real update work. Note
|
||||
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 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,
|
||||
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,
|
||||
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,
|
||||
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,
|
||||
static inline void II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
|
||||
uint4 s, uint4 ac);
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue