From f4c20290509d7ed3a8fd5304577e7a4cc0b9d974 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Tue, 3 Apr 2007 03:49:53 +0000
Subject: Ok, no code is left in src, it's all in src/old.  We'll gradually
 move code back into src as it's fixed and re-org'd.  This includes tests,
 which, I may write a unit test system into libbu++ just to make my life
 easier.

---
 src/sha1.cpp | 161 -----------------------------------------------------------
 1 file changed, 161 deletions(-)
 delete mode 100644 src/sha1.cpp

(limited to 'src/sha1.cpp')

diff --git a/src/sha1.cpp b/src/sha1.cpp
deleted file mode 100644
index 8270c3b..0000000
--- a/src/sha1.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include "sha1.h"
-
-Sha1::Sha1() :
-	H0( 0x67452301 ),
-	H1( 0xefcdab89 ),
-	H2( 0x98badcfe ),
-	H3( 0x10325476 ),
-	H4( 0xc3d2e1f0 ),
-	unprocessedBytes( 0 ),
-	size( 0 )
-{
-}
-
-Sha1::~Sha1()
-{
-}
-
-void Sha1::process()
-{
-	int t;
-	uint32_t a, b, c, d, e, K, f, W[80];
-
-	// starting values
-	a = H0;
-	b = H1;
-	c = H2;
-	d = H3;
-	e = H4;
-
-	// copy and expand the message block
-	for( t = 0; t < 16; t++ ) W[t] = (bytes[t*4] << 24)
-									+(bytes[t*4 + 1] << 16)
-									+(bytes[t*4 + 2] << 8)
-									+ bytes[t*4 + 3];
-	for(; t< 80; t++ ) W[t] = lrot( W[t-3]^W[t-8]^W[t-14]^W[t-16], 1 );
-	
-	/* main loop */
-	uint32_t temp;
-	for( t = 0; t < 80; t++ )
-	{
-		if( t < 20 ) {
-			K = 0x5a827999;
-			f = (b & c) | ((~b) & d);
-		} else if( t < 40 ) {
-			K = 0x6ed9eba1;
-			f = b ^ c ^ d;
-		} else if( t < 60 ) {
-			K = 0x8f1bbcdc;
-			f = (b & c) | (b & d) | (c & d);
-		} else {
-			K = 0xca62c1d6;
-			f = b ^ c ^ d;
-		}
-		temp = lrot(a,5) + f + e + W[t] + K;
-		e = d;
-		d = c;
-		c = lrot(b,30);
-		b = a;
-		a = temp;
-		//printf( "t=%d %08x %08x %08x %08x %08x\n",t,a,b,c,d,e );
-	}
-
-	/* add variables */
-	H0 += a;
-	H1 += b;
-	H2 += c;
-	H3 += d;
-	H4 += e;
-
-	//printf( "Current: %08x %08x %08x %08x %08x\n",H0,H1,H2,H3,H4 );
-	/* all bytes have been processed */
-	unprocessedBytes = 0;
-}
-
-void Sha1::update( const char* data, int num )
-{
-	// add these bytes to the running total
-	size += num;
-
-	// repeat until all data is processed
-	while( num > 0 )
-	{
-		// number of bytes required to complete block
-		int needed = 64 - unprocessedBytes;
-
-		// number of bytes to copy (use smaller of two)
-		int toCopy = (num < needed) ? num : needed;
-
-		// Copy the bytes
-		memcpy( bytes + unprocessedBytes, data, toCopy );
-
-		// Bytes have been copied
-		num -= toCopy;
-		data += toCopy;
-		unprocessedBytes += toCopy;
-		
-		// there is a full block
-		if( unprocessedBytes == 64 ) process();
-	}
-}
-
-unsigned char* Sha1::getDigest()
-{
-	// save the message size
-	uint32_t totalBitsL = size << 3;
-	uint32_t totalBitsH = size >> 29;
-
-	// add 0x80 to the message
-	update( "\x80", 1 );
-	
-	unsigned char footer[64] = {
-		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, 0 };
-
-	// block has no room for 8-byte filesize, so finish it
-	if( unprocessedBytes > 56 )
-		update( (char*)footer, 64 - unprocessedBytes);
-
-	// how many zeros do we need
-	int neededZeros = 56 - unprocessedBytes;
-
-	// store file size (in bits) in big-endian format
-	toBigEndian( totalBitsH, footer + neededZeros );
-	toBigEndian( totalBitsL, footer + neededZeros + 4 );
-
-	// finish the final block
-	update( (char*)footer, neededZeros + 8 );
-
-	// allocate memory for the digest bytes
-	unsigned char* digest = new unsigned char[20];
-
-	// copy the digest bytes
-	toBigEndian( H0, digest );
-	toBigEndian( H1, digest + 4 );
-	toBigEndian( H2, digest + 8 );
-	toBigEndian( H3, digest + 12 );
-	toBigEndian( H4, digest + 16 );
-
-	// return the digest
-	return digest;
-}
-
-uint32_t Sha1::lrot( uint32_t x, int bits )
-{
-	return (x<<bits) | (x>>(32 - bits));
-};
-
-void Sha1::toBigEndian( uint32_t num, unsigned char* byte )
-{
-	byte[0] = (unsigned char)(num>>24);
-	byte[1] = (unsigned char)(num>>16);
-	byte[2] = (unsigned char)(num>>8);
-	byte[3] = (unsigned char)num;
-}
-
-- 
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