sph_md4.h File Reference

#include <stddef.h>
#include "sph_types.h"

Go to the source code of this file.

Data Structures

struct  sph_md4_context

Defines

#define SPH_SIZE_md4   128

Functions

void sph_md4_init (void *cc)
void sph_md4 (void *cc, const void *data, size_t len)
void sph_md4_close (void *cc, void *dst)
void sph_md4_comp (const sph_u32 msg[16], sph_u32 val[4])

Detailed Description

MD4 interface.

MD4 is described in RFC 1320.

Warning:
The MD4 hash function is considered as severely broken, cryptographically speaking: collisions have been published and new collisions can be built very efficiently. Do not use MD4 for actual security purposes.

==========================(LICENSE BEGIN)============================

Copyright (c) 2007-2010 Projet RNRT SAPHIR

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

===========================(LICENSE END)=============================

Author:
Thomas Pornin <thomas.pornin@cryptolog.com>

Define Documentation

#define SPH_SIZE_md4   128

Output size (in bits) for MD4.


Function Documentation

void sph_md4_init ( void *  cc  ) 

Initialize a MD4 context. This process performs no memory allocation.

Parameters:
cc the MD4 context (pointer to a sph_md4_context)
void sph_md4 ( void *  cc,
const void *  data,
size_t  len 
)

Process some data bytes. It is acceptable that len is zero (in which case this function does nothing).

Parameters:
cc the MD4 context
data the input data
len the input data length (in bytes)
void sph_md4_close ( void *  cc,
void *  dst 
)

Terminate the current MD4 computation and output the result into the provided buffer. The destination buffer must be wide enough to accomodate the result (16 bytes). The context is automatically reinitialized.

Parameters:
cc the MD4 context
dst the destination buffer
void sph_md4_comp ( const sph_u32  msg[16],
sph_u32  val[4] 
)

Apply the MD4 compression function on the provided data. The msg parameter contains the 16 32-bit input blocks, as numerical values (hence after the little-endian decoding). The val parameter contains the 4 32-bit input blocks for the compression function; the output is written in place in this array.

Parameters:
msg the message block (16 values)
val the function 128-bit input and output
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