security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-07-02 22:46:30 +02:00
Code Activity

See ChangeLog: Mon Jan 24 22:24:38 CET 2000 Werner Koch

Browse source
This commit is contained in:
Werner Koch 2000-01-24 21:14:42 +00:00
parent 54b141f63e
commit db43afc923
12 changed files with 454 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

50
g10/encode.c
View file

@ -41,6 +41,52 @@
static int encode_simple( const char *filename, int mode );
static int write_pubkey_enc_from_list( PK_LIST pk_list, DEK *dek, IOBUF out );
/****************
* Emulate our old PK interface here - sometime in the future we might
* change the internal design to directly fit to libgcrypt.
*/
static int
pk_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey )
{
GCRY_SEXP s_ciph, s_data, s_pkey;
int rc;
/* make a sexp from pkey */
if( algo == GCRY_PK_ELG || algo == GCRY_PK_ELG_E ) {
s_pkey = SEXP_CONS( SEXP_NEW( "public-key", 0 ),
gcry_sexp_vlist( SEXP_NEW( "elg", 3 ),
gcry_sexp_new_name_mpi( "p", pkey[0] ),
gcry_sexp_new_name_mpi( "g", pkey[1] ),
gcry_sexp_new_name_mpi( "y", pkey[2] ),
NULL ));
}
else
return G10ERR_PUBKEY_ALGO;
/* put the data into a simple list */
s_data = gcry_sexp_new_mpi( data );
/* pass it to libgcrypt */
rc = gcry_pk_encrypt( &s_ciph, s_data, s_pkey );
gcry_sexp_release( s_data );
gcry_sexp_release( s_pkey );
if( rc )
;
else { /* add better error handling or make gnupg use S-Exp directly */
GCRY_SEXP list = gcry_sexp_find_token( s_ciph, "a" , 0 );
assert( list );
resarr[0] = gcry_sexp_cdr_mpi( list, 0 );
assert( resarr[0] );
list = gcry_sexp_find_token( s_ciph, "b" , 0 );
assert( list );
resarr[1] = gcry_sexp_cdr_mpi( list, 0 );
assert( resarr[1] );
}
gcry_sexp_release( s_ciph );
return rc;
}
/****************
@ -464,7 +510,7 @@ write_pubkey_enc_from_list( PK_LIST pk_list, DEK *dek, IOBUF out )
* number of bits we have to use. We then encode the session
* key in some way and we get it back in the big intger value
* FRAME. Then we use FRAME, the public key PK->PKEY and the
* algorithm number PK->PUBKEY_ALGO and pass it to pubkey_encrypt
* algorithm number PK->PUBKEY_ALGO and pass it to pk_encrypt
* which returns the encrypted value in the array ENC->DATA.
* This array has a size which depends on the used algorithm
* (e.g. 2 for ElGamal). We don't need frame anymore because we
@ -473,7 +519,7 @@ write_pubkey_enc_from_list( PK_LIST pk_list, DEK *dek, IOBUF out )
*/
frame = encode_session_key( dek, pubkey_nbits( pk->pubkey_algo,
pk->pkey ) );
rc = pubkey_encrypt( pk->pubkey_algo, enc->data, frame, pk->pkey );
rc = pk_encrypt( pk->pubkey_algo, enc->data, frame, pk->pkey );
mpi_release( frame );
if( rc )
log_error("pubkey_encrypt failed: %s\n", g10_errstr(rc) );