// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: sha1.cc,v 1.2 2001/03/11 05:30:20 jgg Exp $
+// $Id: sha1.cc,v 1.3 2001/05/13 05:15:03 jgg Exp $
/* ######################################################################
SHA1 - SHA-1 Secure Hash Algorithm.
*/
/*}}} */
// Include Files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/sha1.h"
-#endif
+#include <config.h>
#include <apt-pkg/sha1.h>
-#include <apt-pkg/strutl.h>
+#include <stdint.h>
#include <string.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <config.h>
-#include <system.h>
/*}}}*/
// SHA1Transform - Alters an existing SHA-1 hash /*{{{*/
uint32_t l[16];
}
CHAR64LONG16;
- CHAR64LONG16 *block;
+ CHAR64LONG16 workspace, *block;
- uint8_t workspace[64];
- block = (CHAR64LONG16 *)workspace;
+ block = &workspace;
memcpy(block,buffer,sizeof(workspace));
/* Copy context->state[] to working vars */
}
/*}}}*/
-// SHA1SumValue::SHA1SumValue - Constructs the summation from a string /*{{{*/
-// ---------------------------------------------------------------------
-/* The string form of a SHA1 is a 40 character hex number */
-SHA1SumValue::SHA1SumValue(string Str)
-{
- memset(Sum,0,sizeof(Sum));
- Set(Str);
-}
-
- /*}}} */
-// SHA1SumValue::SHA1SumValue - Default constructor /*{{{*/
-// ---------------------------------------------------------------------
-/* Sets the value to 0 */
-SHA1SumValue::SHA1SumValue()
-{
- memset(Sum,0,sizeof(Sum));
-}
-
- /*}}} */
-// SHA1SumValue::Set - Set the sum from a string /*{{{*/
-// ---------------------------------------------------------------------
-/* Converts the hex string into a set of chars */
-bool SHA1SumValue::Set(string Str)
-{
- return Hex2Num(Str.begin(),Str.end(),Sum,sizeof(Sum));
-}
-
- /*}}} */
-// SHA1SumValue::Value - Convert the number into a string /*{{{*/
-// ---------------------------------------------------------------------
-/* Converts the set of chars into a hex string in lower case */
-string SHA1SumValue::Value() const
-{
- char Conv[16] =
- { '0','1','2','3','4','5','6','7','8','9','a','b',
- 'c','d','e','f'
- };
- char Result[41];
- Result[40] = 0;
-
- // Convert each char into two letters
- int J = 0;
- int I = 0;
- for (; I != 40; J++,I += 2)
- {
- Result[I] = Conv[Sum[J] >> 4];
- Result[I + 1] = Conv[Sum[J] & 0xF];
- }
-
- return string(Result);
-}
-
- /*}}} */
-// SHA1SumValue::operator == - Comparator /*{{{*/
-// ---------------------------------------------------------------------
-/* Call memcmp on the buffer */
-bool SHA1SumValue::operator == (const SHA1SumValue & rhs) const
-{
- return memcmp(Sum,rhs.Sum,sizeof(Sum)) == 0;
-}
- /*}}}*/
// SHA1Summation::SHA1Summation - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
// Transfer over the result
SHA1SumValue Value;
+ unsigned char res[20];
for (unsigned i = 0; i < 20; i++)
{
- Value.Sum[i] = (unsigned char)
+ res[i] = (unsigned char)
((state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
}
+ Value.Set(res);
return Value;
}
/*}}}*/
// SHA1Summation::Add - Adds content of buffer into the checksum /*{{{*/
// ---------------------------------------------------------------------
/* May not be called after Result() is called */
-bool SHA1Summation::Add(const unsigned char *data,unsigned long len)
+bool SHA1Summation::Add(const unsigned char *data,unsigned long long len)
{
if (Done)
return false;
+ if (len == 0)
+ return true;
uint32_t *state = (uint32_t *)State;
uint32_t *count = (uint32_t *)Count;
return true;
}
/*}}}*/
-// SHA1Summation::AddFD - Add content of file into the checksum /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool SHA1Summation::AddFD(int Fd,unsigned long Size)
-{
- unsigned char Buf[64 * 64];
- int Res = 0;
- while (Size != 0)
- {
- Res = read(Fd,Buf,MIN(Size,sizeof(Buf)));
- if (Res < 0 || (unsigned) Res != MIN(Size,sizeof(Buf)))
- return false;
- Size -= Res;
- Add(Buf,Res);
- }
- return true;
-}
- /*}}}*/