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See ChangeLog: Fri Dec 31 12:48:31 CET 1999 Werner Koch

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This commit is contained in:
Werner Koch 1999-12-31 11:44:29 +00:00
parent f8848d9c5c
commit ed0b0e09d3
26 changed files with 362 additions and 356 deletions
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64
g10/misc.c
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@ -23,6 +23,7 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#if defined(__linux__) && defined(__alpha__) && __GLIBC__ < 2
#include <asm/sysinfo.h>
#include <asm/unistd.h>
@ -116,12 +117,13 @@ mpi_write_opaque( IOBUF out, MPI a )
{
size_t nbytes, nbits;
int rc;
char *p;
assert( gcry_mpi_get_flag( a, GCRYMPI_FLAG_OPAQUE ) );
p = gcry_mpi_get_opaque( a, &nbits );
nbytes = (nbits+7) / 8;
iobuf_put( out, nbits >> 8 );
iobuf_put( out, nbits )
iobuf_put( out, nbits );
rc = iobuf_write( out, p, nbytes );
return rc;
}
@ -134,10 +136,10 @@ mpi_write_opaque( IOBUF out, MPI a )
* with MSB first (left padded with zeroes to align on a byte boundary).
*/
MPI
mpi_read(IOBUF inp, unsigned *ret_nread, int secure)
mpi_read(IOBUF inp, unsigned int *ret_nread, int secure)
{
int c, c1, c2, i;
unsigned nbits, nbytes, nread=0;
unsigned int nbits, nbytes, nread=0;
MPI a = NULL;
byte *buf = NULL;
byte *p;
@ -163,8 +165,8 @@ mpi_read(IOBUF inp, unsigned *ret_nread, int secure)
nread++;
}
nread += nbytes;
/* FIXME: replace with the gcry_scan function */
a = mpi_read_from_buffer( buf, &nread, secure );
if( gcry_mpi_scan( &a, GCRYMPI_FMT_PGP, buf, &nread ) )
a = NULL;
leave:
m_free(buf);
@ -220,6 +222,35 @@ mpi_read_opaque(IOBUF inp, unsigned *ret_nread )
}
int
mpi_print( FILE *fp, MPI a, int mode )
{
int n=0;
if( !a )
return fprintf(fp, "[MPI_NULL]");
if( !mode ) {
unsigned int n1;
n1 = gcry_mpi_get_nbits(a);
n += fprintf(fp, "[%u bits]", n1);
}
else {
int rc;
byte *buffer;
size_t nbytes;
rc = gcry_mpi_print( GCRYMPI_FMT_HEX, NULL, &nbytes, a );
assert( !rc );
buffer = m_is_secure(a)? m_alloc_secure(nbytes) : m_alloc(nbytes);
rc = gcry_mpi_print( GCRYMPI_FMT_HEX, buffer, &nbytes, a );
assert( !rc );
fputs( buffer, fp );
n += strlen(buffer);
m_free( buffer );
}
return n;
}
u16
checksum_u16( unsigned n )
@ -244,15 +275,21 @@ checksum( byte *p, unsigned n )
u16
checksum_mpi( MPI a )
{
int rc;
u16 csum;
byte *buffer;
unsigned nbytes;
unsigned nbits;
size_t nbytes;
buffer = mpi_get_buffer( a, &nbytes, NULL );
nbits = mpi_get_nbits(a);
csum = checksum_u16( nbits );
csum += checksum( buffer, nbytes );
rc = gcry_mpi_print( GCRYMPI_FMT_PGP, NULL, &nbytes, a );
assert( !rc );
/* fixme: for numbers not in the suecre memory we
* should use a stack based buffer and only allocate
* a larger one when the mpi_print return an error
*/
buffer = m_is_secure(a)? m_alloc_secure(nbytes) : m_alloc(nbytes);
rc = gcry_mpi_print( GCRYMPI_FMT_PGP, buffer, &nbytes, a );
assert( !rc );
csum = checksum( buffer, nbytes );
m_free( buffer );
return csum;
}
@ -388,3 +425,8 @@ pubkey_get_nenc( int algo )
return n > 0? n : 0;
}
int
pubkey_nbits()
{
}