security-and-privacy/gnupg
security-and-privacy/gnupg
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release 0.2.14

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This commit is contained in:
Werner Koch 1998-04-02 10:30:03 +00:00
parent 6b91e7762c
commit 303b1084d5
42 changed files with 824 additions and 518 deletions
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4
cipher/ChangeLog
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@ -1,3 +1,7 @@
Wed Apr 1 16:38:27 1998 Werner Koch (wk@isil.d.shuttle.de)
* elgamla.c (elg_generate): Faster generation of x in some cases.
Thu Mar 19 13:54:48 1998 Werner Koch (wk@isil.d.shuttle.de)
* blowfish.c (blowfish_decode_cfb): changed XOR operation

2
cipher/Makefile.am
View file

@ -1,6 +1,6 @@
## Process this file with automake to produce Makefile.in
INCLUDES = -I$(top_srcdir)/include
INCLUDES = -I$(top_srcdir)/include -I$(top_srcdir)/intl -I../intl
EXTRA_DIST = @CIPHER_EXTRA_DIST@
noinst_LIBRARIES = libcipher.a

2
cipher/Makefile.in
View file

@ -92,7 +92,7 @@ VERSION = @VERSION@
ZLIBS = @ZLIBS@
l = @l@
INCLUDES = -I$(top_srcdir)/include
INCLUDES = -I$(top_srcdir)/include -I$(top_srcdir)/intl -I../intl
EXTRA_DIST = @CIPHER_EXTRA_DIST@
noinst_LIBRARIES = libcipher.a

24
cipher/elgamal.c
View file

@ -126,6 +126,7 @@ elg_generate( ELG_public_key *pk, ELG_secret_key *sk,
MPI y;
MPI temp;
unsigned qbits;
byte *rndbuf;
p_min1 = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB );
temp = mpi_alloc( (nbits+BITS_PER_MPI_LIMB-1)/BITS_PER_MPI_LIMB );
@ -145,22 +146,33 @@ elg_generate( ELG_public_key *pk, ELG_secret_key *sk,
/* select a random number which has these properties:
* 0 < x < p-1
* This must be a very good random number because this is the
* secret part. The prime is public and may be shared anyware,
* so a random generator level of 1 has been used for the prime
* secret part. The prime is public and may be shared anyway,
* so a random generator level of 1 is used for the prime.
*/
x = mpi_alloc_secure( nbits/BITS_PER_MPI_LIMB );
if( DBG_CIPHER )
log_debug("choosing a random x ");
rndbuf = NULL;
do {
byte *rndbuf;
if( DBG_CIPHER )
fputc('.', stderr);
rndbuf = get_random_bits( nbits, 2, 1 );
if( rndbuf ) { /* change only some of the higher bits */
if( nbits < 16 ) {/* should never happen ... */
m_free(rndbuf);
rndbuf = get_random_bits( nbits, 2, 1 );
}
else {
char *r = get_random_bits( 16, 2, 1 );
memcpy(rndbuf, r, 16 );
m_free(r);
}
}
else
rndbuf = get_random_bits( nbits, 2, 1 );
mpi_set_buffer( x, rndbuf, (nbits+7)/8, 0 );
m_free(rndbuf);
mpi_clear_highbit( x, nbits+1 );
log_mpidump(" x: ", x );
} while( !( mpi_cmp_ui( x, 0 )>0 && mpi_cmp( x, p_min1 )<0 ) );
m_free(rndbuf);
y = mpi_alloc(nbits/BITS_PER_MPI_LIMB);
mpi_powm( y, g, x, p );