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Tweaked v3 -c decryption, let --force-v4-certs use SHA-1 for all RSA keys.

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This commit is contained in:
Werner Koch 2001-11-08 16:24:04 +00:00
parent 961e45bf15
commit 0a036b6b03
4 changed files with 39 additions and 9 deletions
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8
g10/ChangeLog
View File

@ -1,5 +1,11 @@
2001-11-08 Werner Koch <wk@gnupg.org>
* pubkey-enc.c (get_it): To reduce the number of questions on the
MLs print the the name of cipher algorithm 1 with the error message.
* mainproc.c: Changed the way old rfc1991 encryption cipher is
selected. Based on a patch by W Lewis.
* pkclist.c (do_edit_ownertrust): Allow to skip over keys, the non
working "show info" is now assigned to "i"
* trustdb.c (ask_ownertrust, validate_keys): Implement a real quit
@ -11,7 +17,7 @@
* g10.c, options.h : New option --[no-]froce-v4-certs.
* sign.c (make_keysig_packet): Create v4 sigs on v4 keys even with
a v3 key. Use new option. By David Shaw
a v3 key. Use that new option. By David Shaw
* revoke.c (ask_revocation_reason): Allow to select "no reason".
By David Shaw.

31
g10/mainproc.c
View File

@ -421,12 +421,33 @@ proc_encrypted( CTX c, PACKET *pkt )
if( opt.list_only )
result = -1;
else if( !c->dek && !c->last_was_session_key ) {
int algo = opt.def_cipher_algo ? opt.def_cipher_algo
: opt.s2k_cipher_algo;
int algo;
STRING2KEY s2kbuf, *s2k = NULL;
/* assume this is old style conventional encrypted data */
log_info(_("assuming %s encrypted data\n"),
cipher_algo_to_string (algo) );
c->dek = passphrase_to_dek( NULL, 0, algo, NULL, 0);
if ( (algo = opt.def_cipher_algo))
log_info (_("assuming %s encrypted data\n"),
cipher_algo_to_string(algo));
else if ( check_cipher_algo(CIPHER_ALGO_IDEA) ) {
algo = opt.def_cipher_algo;
if (!algo)
algo = opt.s2k_cipher_algo;;
log_info (_("IDEA cipher unavailable, "
"optimistically attempting to use %s instead\n"),
cipher_algo_to_string(algo));
}
else {
algo = CIPHER_ALGO_IDEA;
if (!opt.def_digest_algo) {
/* If no digest is given we assume MD5 */
s2kbuf.mode = 0;
s2kbuf.hash_algo = DIGEST_ALGO_MD5;
s2k = &s2kbuf;
}
log_info (_("assuming %s encrypted data\n"), "IDEA");
}
c->dek = passphrase_to_dek ( NULL, 0, algo, s2k, 0 );
if (c->dek)
c->dek->algo_info_printed = 1;
}

4
g10/pubkey-enc.c
View File

@ -173,8 +173,8 @@ get_it( PKT_pubkey_enc *enc, DEK *dek, PKT_secret_key *sk, u32 *keyid )
rc = check_cipher_algo( dek->algo );
if( rc ) {
if( !opt.quiet && rc == G10ERR_CIPHER_ALGO ) {
log_info(_("cipher algorithm %d is unknown or disabled\n"),
dek->algo);
log_info(_("cipher algorithm %d%s is unknown or disabled\n"),
dek->algo, dek->algo == CIPHER_ALGO_IDEA? " (IDEA)":"");
}
dek->algo = 0;
goto leave;

5
g10/sign.c
View File

@ -1002,7 +1002,10 @@ make_keysig_packet( PKT_signature **ret_sig, PKT_public_key *pk,
break;
case PUBKEY_ALGO_RSA_S:
case PUBKEY_ALGO_RSA:
digest_algo = sk->version < 4? DIGEST_ALGO_MD5 : DIGEST_ALGO_SHA1;
if (opt.force_v4_sigs || sk->version > 3)
digest_algo = DIGEST_ALGO_SHA1;
else
digest_algo = DIGEST_ALGO_MD5;
break;
default:
digest_algo = DIGEST_ALGO_RMD160;