[Bitcollider-commits] CVS: bitcollider/include kztree.h,NONE,1.1 bc_version.h,1.9,1.10

[Gordon M. <go...@us...>]

Update of /cvsroot/bitcollider/bitcollider/include
In directory sc8-pr-cvs1:/tmp/cvs-serv32334/include

Modified Files:
	bc_version.h 
Added Files:
	kztree.h 
Log Message:
* kztree.h
    Kazaa tree hash support. Adapted from tigertree code. 
* bc_version.h
    Increment version to 0.5.2

--- NEW FILE: kztree.h ---
/* (PD) 2003 The Bitzi Corporation
 * Please see file COPYING or http://bitzi.com/publicdomain 
 * for more info.
 *
 * $Id: kztree.h,v 1.1 2004/01/18 10:53:24 gojomo Exp $
 *
 * Structures to allow a streamed calculation of the 
 * 'KazaaTreeHash' value, without knowing input size
 * in advance. 
 * 
 */

/* MD5 hash result size, in bytes */
#define MD5SIZE 16

/* size of each block independently tiger-hashed, not counting leaf 0x00 prefix */
#define KZTREE_BLOCKSIZE (1024*32)

/* size of input to each non-leaf hash-tree node, not counting node 0x01 prefix */
#define KZTREE_NODESIZE (MD5SIZE*2)

/* default size of interim values stack, in MD5SIZE
 * blocks. If this overflows (as it will for input
 * longer than 2^128 in size), havoc may ensue. */
#define KZTREE_STACKSIZE (MD5SIZE*113)

typedef struct kztree_context {
  unsigned long count;                  /* total blocks processed */
  unsigned char leaf[KZTREE_BLOCKSIZE]; /* leaf in progress */
  unsigned char *block;                 /* leaf data */
  int index;                            /* index into block */
  unsigned char *top;                   /* top (next empty) stack slot */
  unsigned char nodes[KZTREE_STACKSIZE];/* stack of interim node values */
  unsigned long gen;                    /* number of nodes in generation of topmost node */
} KZTREE_CONTEXT;

void kztree_init(KZTREE_CONTEXT *ctx);
void kztree_update(KZTREE_CONTEXT *ctx, unsigned char *buffer, unsigned int len);
void kztree_digest(KZTREE_CONTEXT *ctx, unsigned char *hash);
void kztree_copy(KZTREE_CONTEXT *dest, KZTREE_CONTEXT *src);
static void kztree_block(KZTREE_CONTEXT *ctx);
static void kztree_compose(KZTREE_CONTEXT *ctx);
Index: bc_version.h
===================================================================
RCS file: /cvsroot/bitcollider/bitcollider/include/bc_version.h,v
retrieving revision 1.9
retrieving revision 1.10
diff -C2 -r1.9 -r1.10
*** bc_version.h	27 Oct 2003 03:09:35 -0000	1.9
--- bc_version.h	18 Jan 2004 10:53:24 -0000	1.10
***************
*** 22,26 ****
  
  /* Your agent-version string; should be #[.#[.#[etc]]] format */
! #define BC_VERSION       "0.5.1"
  
  #endif
--- 22,26 ----
  
  /* Your agent-version string; should be #[.#[.#[etc]]] format */
! #define BC_VERSION       "0.5.2"
  
  #endif