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* keygen.c (write_keybinding, do_generate_keypair, generate_subkeypair):
Keep track of the unprotected subkey secret key so we can make a backsig with it.
This commit is contained in:
David Shaw
parent
8615da464e
commit
8e5f3ce846
@ -1,5 +1,9 @@
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2004-03-18 David Shaw <dshaw@jabberwocky.com>
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* keygen.c (write_keybinding, do_generate_keypair,
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generate_subkeypair): Keep track of the unprotected subkey secret
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key so we can make a backsig with it.
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* keygen.c (gen_elg, gen_dsa, gen_rsa, do_create,
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do_generate_keypair, generate_subkeypair): New is_subkey argument
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to set whether a generated key is a subkey. Do not overload the
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68
g10/keygen.c
68
g10/keygen.c
@ -1,5 +1,6 @@
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/* keygen.c - generate a key pair
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* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003,
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* 2004 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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@ -38,7 +39,6 @@
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#define MAX_PREFS 30
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enum para_name {
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pKEYTYPE,
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pKEYLENGTH,
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@ -606,8 +606,10 @@ write_selfsig( KBNODE root, KBNODE pub_root, PKT_secret_key *sk,
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return rc;
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}
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/* sub_sk is currently unused (reserved for backsigs) */
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static int
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write_keybinding( KBNODE root, KBNODE pub_root, PKT_secret_key *sk,
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write_keybinding( KBNODE root, KBNODE pub_root,
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PKT_secret_key *pri_sk, PKT_secret_key *sub_sk,
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unsigned int use )
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{
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PACKET *pkt;
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@ -641,7 +643,7 @@ write_keybinding( KBNODE root, KBNODE pub_root, PKT_secret_key *sk,
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/* and make the signature */
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oduap.usage = use;
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oduap.pk = subpk;
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rc = make_keysig_packet( &sig, pk, NULL, subpk, sk, 0x18, 0, 0, 0, 0,
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rc = make_keysig_packet( &sig, pk, NULL, subpk, pri_sk, 0x18, 0, 0, 0, 0,
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keygen_add_key_flags_and_expire, &oduap );
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if( rc ) {
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log_error("make_keysig_packet failed: %s\n", g10_errstr(rc) );
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@ -2111,7 +2113,7 @@ do_generate_keypair( struct para_data_s *para,
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{
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KBNODE pub_root = NULL;
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KBNODE sec_root = NULL;
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PKT_secret_key *sk = NULL;
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PKT_secret_key *pri_sk = NULL, *sub_sk = NULL;
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const char *s;
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struct revocation_key *revkey;
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int rc;
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@ -2184,14 +2186,14 @@ do_generate_keypair( struct para_data_s *para,
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pub_root, sec_root,
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get_parameter_dek( para, pPASSPHRASE_DEK ),
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get_parameter_s2k( para, pPASSPHRASE_S2K ),
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&sk,
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&pri_sk,
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get_parameter_u32( para, pKEYEXPIRE ), 0 );
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if(!rc && (revkey=get_parameter_revkey(para,pREVOKER)))
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{
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rc=write_direct_sig(pub_root,pub_root,sk,revkey);
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rc=write_direct_sig(pub_root,pub_root,pri_sk,revkey);
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if(!rc)
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write_direct_sig(sec_root,pub_root,sk,revkey);
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write_direct_sig(sec_root,pub_root,pri_sk,revkey);
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}
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if( !rc && (s=get_parameter_value(para, pUSERID)) ) {
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@ -2199,10 +2201,10 @@ do_generate_keypair( struct para_data_s *para,
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if( !rc )
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write_uid(sec_root, s );
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if( !rc )
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rc = write_selfsig(pub_root, pub_root, sk,
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rc = write_selfsig(pub_root, pub_root, pri_sk,
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get_parameter_uint (para, pKEYUSAGE));
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if( !rc )
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rc = write_selfsig(sec_root, pub_root, sk,
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rc = write_selfsig(sec_root, pub_root, pri_sk,
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get_parameter_uint (para, pKEYUSAGE));
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}
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@ -2212,14 +2214,14 @@ do_generate_keypair( struct para_data_s *para,
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pub_root, sec_root,
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get_parameter_dek( para, pPASSPHRASE_DEK ),
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get_parameter_s2k( para, pPASSPHRASE_S2K ),
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NULL,
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&sub_sk,
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get_parameter_u32( para, pSUBKEYEXPIRE ), 1 );
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if( !rc )
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rc = write_keybinding(pub_root, pub_root, sk,
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get_parameter_uint (para, pSUBKEYUSAGE));
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rc = write_keybinding(pub_root, pub_root, pri_sk, sub_sk,
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get_parameter_uint (para, pSUBKEYUSAGE));
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if( !rc )
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rc = write_keybinding(sec_root, pub_root, sk,
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get_parameter_uint (para, pSUBKEYUSAGE));
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rc = write_keybinding(sec_root, pub_root, pri_sk, sub_sk,
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get_parameter_uint (para, pSUBKEYUSAGE));
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did_sub = 1;
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}
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@ -2322,8 +2324,12 @@ do_generate_keypair( struct para_data_s *para,
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}
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release_kbnode( pub_root );
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release_kbnode( sec_root );
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if( sk ) /* the unprotected secret key */
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free_secret_key(sk);
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/* the unprotected secret keys */
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if( pri_sk )
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free_secret_key(pri_sk);
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if( sub_sk )
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free_secret_key(sub_sk);
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}
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@ -2336,7 +2342,7 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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{
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int okay=0, rc=0;
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KBNODE node;
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PKT_secret_key *sk = NULL; /* this is the primary sk */
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PKT_secret_key *pri_sk = NULL, *sub_sk = NULL;
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int algo;
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unsigned int use;
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u32 expire;
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@ -2354,11 +2360,11 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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}
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/* make a copy of the sk to keep the protected one in the keyblock */
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sk = copy_secret_key( NULL, node->pkt->pkt.secret_key );
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pri_sk = copy_secret_key( NULL, node->pkt->pkt.secret_key );
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cur_time = make_timestamp();
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if( sk->timestamp > cur_time ) {
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ulong d = sk->timestamp - cur_time;
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if( pri_sk->timestamp > cur_time ) {
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ulong d = pri_sk->timestamp - cur_time;
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log_info( d==1 ? _("key has been created %lu second "
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"in future (time warp or clock problem)\n")
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: _("key has been created %lu seconds "
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@ -2369,14 +2375,14 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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}
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}
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if (sk->version < 4) {
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if (pri_sk->version < 4) {
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log_info (_("NOTE: creating subkeys for v3 keys "
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"is not OpenPGP compliant\n"));
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goto leave;
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}
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/* unprotect to get the passphrase */
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switch( is_secret_key_protected( sk ) ) {
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switch( is_secret_key_protected( pri_sk ) ) {
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case -1:
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rc = G10ERR_PUBKEY_ALGO;
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break;
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@ -2385,7 +2391,7 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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break;
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default:
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tty_printf("Key is protected.\n");
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rc = check_secret_key( sk, 0 );
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rc = check_secret_key( pri_sk, 0 );
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if( !rc )
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passphrase = get_last_passphrase();
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break;
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@ -2393,7 +2399,6 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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if( rc )
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goto leave;
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algo = ask_algo( 1, &use );
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assert(algo);
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nbits = ask_keysize( algo );
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@ -2412,11 +2417,11 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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}
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rc = do_create( algo, nbits, pub_keyblock, sec_keyblock,
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dek, s2k, NULL, expire, 1 );
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dek, s2k, &sub_sk, expire, 1 );
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if( !rc )
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rc = write_keybinding(pub_keyblock, pub_keyblock, sk, use);
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rc = write_keybinding(pub_keyblock, pub_keyblock, pri_sk, sub_sk, use);
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if( !rc )
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rc = write_keybinding(sec_keyblock, pub_keyblock, sk, use);
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rc = write_keybinding(sec_keyblock, pub_keyblock, pri_sk, sub_sk, use);
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if( !rc ) {
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PKT_public_key *subpk = NULL;
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@ -2436,8 +2441,11 @@ generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock )
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m_free( passphrase );
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m_free( dek );
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m_free( s2k );
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if( sk ) /* release the copy of the (now unprotected) secret key */
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free_secret_key(sk);
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/* release the copy of the (now unprotected) secret keys */
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if( pri_sk )
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free_secret_key(pri_sk);
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if( sub_sk )
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free_secret_key(sub_sk);
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set_next_passphrase( NULL );
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return okay;
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}
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