IccMD5.h File Reference

IccMD5.H - header file for IccMD5.cpp. More...

#include "IccProfLibConf.h"

Include dependency graph for IccMD5.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	MD5_CTX
	MD5 context. More...

Typedefs
typedef unsigned char *	POINTER
	POINTER defines a generic pointer type.
typedef unsigned short int	UINT2
	UINT2 defines a two byte word.
typedef uint32_t	UINT4
	UINT4 defines a four byte word.

Functions
void	icMD5Final (unsigned char *, MD5_CTX *)
	MD5 finalization.
void	icMD5Init (MD5_CTX *)
	MD5 initialization.
void	icMD5Update (MD5_CTX *, unsigned char *, unsigned int)
	MD5 block update operation.

Detailed Description

IccMD5.H - header file for IccMD5.cpp.

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.

Definition in file IccMD5.h.

Typedef Documentation

POINTER

typedef unsigned char* POINTER

POINTER defines a generic pointer type.

Definition at line 42 of file IccMD5.h.

UINT2

typedef unsigned short int UINT2

UINT2 defines a two byte word.

Definition at line 45 of file IccMD5.h.

UINT4

typedef uint32_t UINT4

UINT4 defines a four byte word.

Definition at line 48 of file IccMD5.h.

Function Documentation

icMD5Final()

void icMD5Final	(	unsigned char *	digest,
		MD5_CTX *	context )

MD5 finalization.

Ends an MD5 message-digest operation, writing the the message digest and zeroizing the context.

Definition at line 150 of file IccMD5.cpp.

{
  unsigned char bits[8];
  unsigned int index, padLen;
 
  /* Save number of bits */
  Encode (bits, context->count, 8);
 
  /* Pad out to 56 mod 64.
*/
  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
  padLen = (index < 56) ? (56 - index) : (120 - index);
  icMD5Update (context, PADDING, padLen);
 
  /* Append length (before padding) */
  icMD5Update (context, bits, 8);
 
 
  /* Store state in digest */
  Encode (digest, context->state, 16);
 
  /* Zeroize sensitive information.
*/
  memset((POINTER)context, 0, sizeof (*context));
}

References context, Encode(), icMD5Update(), and PADDING.

Referenced by CalcProfileID().

Here is the call graph for this function:

Here is the caller graph for this function:

icMD5Init()

void icMD5Init

(

MD5_CTX *

context

)

MD5 initialization.

Begins an MD5 operation, writing a new context.

Definition at line 99 of file IccMD5.cpp.

{
  context->count[0] = context->count[1] = 0;
  /* Load magic initialization constants.
*/
  context->state[0] = 0x67452301;
  context->state[1] = 0xefcdab89;
  context->state[2] = 0x98badcfe;
  context->state[3] = 0x10325476;
}

References context.

Referenced by CalcProfileID().

Here is the caller graph for this function:

icMD5Update()

void icMD5Update	(	MD5_CTX *	context,
		unsigned char *	input,
		unsigned int	inputLen )

MD5 block update operation.

Continues an MD5 message-digest operation, processing another message block, and updating the context.

Definition at line 114 of file IccMD5.cpp.

{
  unsigned int i, index, partLen;
 
  /* Compute number of bytes mod 64 */
  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
 
  /* Update number of bits */
  if ((context->count[0] += ((UINT4)inputLen << 3))
    < ((UINT4)inputLen << 3))
    context->count[1]++;
  context->count[1] += ((UINT4)inputLen >> 29);
 
  partLen = 64 - index;
 
  /* Transform as many times as possible.
  */
  if (inputLen >= partLen) {
    memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
    MD5Transform (context->state, context->buffer);
 
    for (i = partLen; i + 63 < inputLen; i += 64)
      MD5Transform (context->state, &input[i]);
 
    index = 0;
  }
  else
    i = 0;
 
  /* Buffer remaining input */
  memcpy((POINTER)&context->buffer[index], (POINTER)&input[i],inputLen-i);
}

References context, and MD5Transform().

Referenced by CalcProfileID(), and icMD5Final().

Here is the call graph for this function:

Here is the caller graph for this function: