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* sig-check.c (signature_check2): Sanity check that the md has a context

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for the hash that the sig is expecting.  This can happen if a onepass sig
header does not match the actual sig, and also if the clearsign "Hash:"
header is missing or does not match the actual sig.
This commit is contained in:
David Shaw 2002-08-07 19:53:27 +00:00
parent bed4e0daa0
commit e703540328
2 changed files with 17 additions and 1 deletions
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6
g10/ChangeLog
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@ -1,5 +1,11 @@
2002-08-07 David Shaw <dshaw@jabberwocky.com>
* sig-check.c (signature_check2): Sanity check that the md has a
context for the hash that the sig is expecting. This can happen
if a onepass sig header does not match the actual sig, and also if
the clearsign "Hash:" header is missing or does not match the
actual sig.
* keyedit.c (menu_revsig): Properly show a uid is revoked without
restarting gpg. This is Debian bug 124219, though their supplied
patch will not do the right thing.

12
g10/sig-check.c
View File

@ -63,7 +63,17 @@ signature_check2( PKT_signature *sig, MD_HANDLE digest,
int rc=0;
*r_expiredate = 0;
if( get_pubkey( pk, sig->keyid ) )
/* Sanity check that the md has a context for the hash that the
sig is expecting. This can happen if a onepass sig header does
not match the actual sig, and also if the clearsign "Hash:"
header is missing or does not match the actual sig. */
if(!md_algo_present(digest,sig->digest_algo)) {
log_info(_("WARNING: signature digest conflict in message\n"));
rc=G10ERR_BAD_SIGN;
}
else if( get_pubkey( pk, sig->keyid ) )
rc = G10ERR_NO_PUBKEY;
else if(!pk->is_valid &&
(pk->main_keyid[0]!=pk->keyid[0] ||