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started with trust stuff

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This commit is contained in:
Werner Koch 1998-01-12 10:18:17 +00:00
parent 762d3d7197
commit ed36092588
54 changed files with 1861 additions and 700 deletions
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45
g10/sig-check.c
View file

@ -38,7 +38,7 @@
* is able to append some data, before getting the digest.
*/
int
signature_check( PKT_signature *sig, MD_HANDLE *digest )
signature_check( PKT_signature *sig, MD_HANDLE digest )
{
PKT_public_cert *pkc = m_alloc_clear( sizeof *pkc );
MPI result = NULL;
@ -54,16 +54,17 @@ signature_check( PKT_signature *sig, MD_HANDLE *digest )
if( pkc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
ELG_public_key pkey;
if( (rc=md_okay(sig->d.elg.digest_algo)) )
if( (rc=check_digest_algo(sig->d.elg.digest_algo)) )
goto leave;
/* complete the digest */
md_putchar( digest, sig->sig_class );
md_putc( digest, sig->sig_class );
{ u32 a = sig->timestamp;
md_putchar( digest, (a >> 24) & 0xff );
md_putchar( digest, (a >> 16) & 0xff );
md_putchar( digest, (a >> 8) & 0xff );
md_putchar( digest, a & 0xff );
md_putc( digest, (a >> 24) & 0xff );
md_putc( digest, (a >> 16) & 0xff );
md_putc( digest, (a >> 8) & 0xff );
md_putc( digest, a & 0xff );
}
md_final( digest );
result = encode_md_value( digest, mpi_get_nbits(pkc->d.elg.p));
pkey.p = pkc->d.elg.p;
pkey.g = pkc->d.elg.g;
@ -134,14 +135,15 @@ signature_check( PKT_signature *sig, MD_HANDLE *digest )
}
/* complete the digest */
md_putchar( digest, sig->sig_class );
md_putc( digest, sig->sig_class );
{ u32 a = sig->timestamp;
md_putchar( digest, (a >> 24) & 0xff );
md_putchar( digest, (a >> 16) & 0xff );
md_putchar( digest, (a >> 8) & 0xff );
md_putchar( digest, a & 0xff );
md_putc( digest, (a >> 24) & 0xff );
md_putc( digest, (a >> 16) & 0xff );
md_putc( digest, (a >> 8) & 0xff );
md_putc( digest, a & 0xff );
}
dp = md_final( digest );
md_final( digest );
dp = md_read( digest, 0 );
for(i=19; i >= 0; i--, dp++ )
if( mpi_getbyte( result, i ) != *dp ) {
rc = G10ERR_BAD_SIGN;
@ -177,14 +179,15 @@ signature_check( PKT_signature *sig, MD_HANDLE *digest )
}
/* complete the digest */
md_putchar( digest, sig->sig_class );
md_putc( digest, sig->sig_class );
{ u32 a = sig->timestamp;
md_putchar( digest, (a >> 24) & 0xff );
md_putchar( digest, (a >> 16) & 0xff );
md_putchar( digest, (a >> 8) & 0xff );
md_putchar( digest, a & 0xff );
md_putc( digest, (a >> 24) & 0xff );
md_putc( digest, (a >> 16) & 0xff );
md_putc( digest, (a >> 8) & 0xff );
md_putc( digest, a & 0xff );
}
dp = md_final( digest );
md_final( digest );
dp = md_read( digest, 0 );
for(i=15; i >= 0; i--, dp++ )
if( mpi_getbyte( result, i ) != *dp ) {
rc = G10ERR_BAD_SIGN;
@ -220,7 +223,7 @@ int
check_key_signature( KBNODE root, KBNODE node )
{
KBNODE unode;
MD_HANDLE *md;
MD_HANDLE md;
PKT_public_cert *pkc;
PKT_signature *sig;
int algo;
@ -239,7 +242,7 @@ check_key_signature( KBNODE root, KBNODE node )
algo = sig->d.rsa.digest_algo;
else
return G10ERR_PUBKEY_ALGO;
if( (rc=md_okay(algo)) )
if( (rc=check_digest_algo(algo)) )
return rc;
unode = find_kbparent( root, node );