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new release

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This commit is contained in:
Werner Koch 1998-04-09 11:19:09 +00:00
parent 8b10a87908
commit 3c7368a33d
19 changed files with 324 additions and 1050 deletions
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12
g10/ChangeLog
View file

@ -1,3 +1,15 @@
Thu Apr 9 11:35:22 1998 Werner Koch (wk@isil.d.shuttle.de)
* seckey-cert.c (do_check): New; combines all the check functions
into one.
* sign.c: removed all key management functions
* keyedit.c: New.
Thu Apr 9 09:49:36 1998 Werner Koch (wk@isil.d.shuttle.de)
* import.c (chk_self_sigs): Changed an error message.
Wed Apr 8 16:19:39 1998 Werner Koch (wk@isil.d.shuttle.de)
* packet.h: packet structs now uses structs from the pubkey,

1
g10/Makefile.am
View file

@ -45,6 +45,7 @@ common_source = \
status.c \
status.h \
sign.c \
keyedit.c \
plaintext.c \
encr-data.c \
encode.c \

22
g10/Makefile.in
View file

@ -137,6 +137,7 @@ common_source = \
status.c \
status.h \
sign.c \
keyedit.c \
plaintext.c \
encr-data.c \
encode.c \
@ -174,9 +175,9 @@ gpg_OBJECTS = g10.o build-packet.o compress.o free-packet.o getkey.o \
pkclist.o skclist.o ringedit.o kbnode.o mainproc.o armor.o mdfilter.o \
textfilter.o cipher.o elg.o dsa.o rsa.o misc.o openfile.o keyid.o \
trustdb.o parse-packet.o passphrase.o pubkey-enc.o seckey-cert.o \
seskey.o import.o export.o comment.o status.o sign.o plaintext.o \
encr-data.o encode.o revoke.o keylist.o sig-check.o signal.o verify.o \
decrypt.o keygen.o
seskey.o import.o export.o comment.o status.o sign.o keyedit.o \
plaintext.o encr-data.o encode.o revoke.o keylist.o sig-check.o \
signal.o verify.o decrypt.o keygen.o
gpg_LDADD = $(LDADD)
gpg_DEPENDENCIES = ../cipher/libcipher.a ../mpi/libmpi.a \
../util/libutil.a
@ -186,8 +187,8 @@ getkey.o pkclist.o skclist.o ringedit.o kbnode.o mainproc.o armor.o \
mdfilter.o textfilter.o cipher.o elg.o dsa.o rsa.o misc.o openfile.o \
keyid.o trustdb.o parse-packet.o passphrase.o pubkey-enc.o \
seckey-cert.o seskey.o import.o export.o comment.o status.o sign.o \
plaintext.o encr-data.o encode.o revoke.o keylist.o sig-check.o \
signal.o
keyedit.o plaintext.o encr-data.o encode.o revoke.o keylist.o \
sig-check.o signal.o
gpgm_DEPENDENCIES = g10maint.o ../cipher/libcipher.a ../mpi/libmpi.a \
../util/libutil.a
gpgm_LDFLAGS =
@ -195,8 +196,9 @@ gpgd_OBJECTS = gpgd.o build-packet.o compress.o free-packet.o getkey.o \
pkclist.o skclist.o ringedit.o kbnode.o mainproc.o armor.o mdfilter.o \
textfilter.o cipher.o elg.o dsa.o rsa.o misc.o openfile.o keyid.o \
trustdb.o parse-packet.o passphrase.o pubkey-enc.o seckey-cert.o \
seskey.o import.o export.o comment.o status.o sign.o plaintext.o \
encr-data.o encode.o revoke.o keylist.o sig-check.o signal.o
seskey.o import.o export.o comment.o status.o sign.o keyedit.o \
plaintext.o encr-data.o encode.o revoke.o keylist.o sig-check.o \
signal.o
gpgd_LDADD = $(LDADD)
gpgd_DEPENDENCIES = ../cipher/libcipher.a ../mpi/libmpi.a \
../util/libutil.a
@ -215,9 +217,9 @@ DEP_FILES = .deps/armor.P .deps/build-packet.P .deps/cipher.P \
.deps/comment.P .deps/compress.P .deps/dearmor.P .deps/decrypt.P \
.deps/dsa.P .deps/elg.P .deps/encode.P .deps/encr-data.P .deps/export.P \
.deps/free-packet.P .deps/g10.P .deps/getkey.P .deps/gpgd.P \
.deps/import.P .deps/kbnode.P .deps/keygen.P .deps/keyid.P \
.deps/keylist.P .deps/mainproc.P .deps/mdfilter.P .deps/misc.P \
.deps/openfile.P .deps/parse-packet.P .deps/passphrase.P \
.deps/import.P .deps/kbnode.P .deps/keyedit.P .deps/keygen.P \
.deps/keyid.P .deps/keylist.P .deps/mainproc.P .deps/mdfilter.P \
.deps/misc.P .deps/openfile.P .deps/parse-packet.P .deps/passphrase.P \
.deps/pkclist.P .deps/plaintext.P .deps/pubkey-enc.P .deps/revoke.P \
.deps/ringedit.P .deps/rsa.P .deps/seckey-cert.P .deps/seskey.P \
.deps/sig-check.P .deps/sign.P .deps/signal.P .deps/skclist.P \

7
g10/import.c
View file

@ -501,8 +501,11 @@ chk_self_sigs( const char *fname, KBNODE keyblock,
}
rc = check_key_signature( keyblock, n, NULL);
if( rc ) {
log_error("%s: key %08lX, invalid self-signature\n",
fname, (ulong)keyid[1]);
log_error( rc == G10ERR_PUBKEY_ALGO ?
"%s: key %08lX, unsupported public key algorithm\n":
"%s: key %08lX, invalid self-signature\n",
fname, (ulong)keyid[1]);
unode->flag |= 2; /* mark as invalid */
}
unode->flag |= 1; /* mark that user-id checked */

9
g10/main.h
View file

@ -54,17 +54,20 @@ int encrypt_filter( void *opaque, int control,
/*-- sign.c --*/
int complete_sig( PKT_signature *sig, PKT_secret_cert *skc, MD_HANDLE md );
int sign_file( STRLIST filenames, int detached, STRLIST locusr,
int encrypt, STRLIST remusr, const char *outfile );
int clearsign_file( const char *fname, STRLIST locusr, const char *outfile );
/*-- sig-check.c --*/
int check_key_signature( KBNODE root, KBNODE node, int *is_selfsig );
/*-- keyedit.c --*/
int sign_key( const char *username, STRLIST locusr );
int edit_keysigs( const char *username );
int delete_key( const char *username, int secure );
int change_passphrase( const char *username );
/*-- sig-check.c --*/
int check_key_signature( KBNODE root, KBNODE node, int *is_selfsig );
/*-- keygen.c --*/
void generate_keypair(void);

2
g10/rsa.c
View file

@ -1,4 +1,4 @@
/* rsa.c
/* rsa.c - glue code for RSA cipher
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.

350
g10/seckey-cert.c
View file

@ -34,19 +34,19 @@
static int
check_elg( PKT_secret_cert *cert )
do_check( PKT_secret_cert *cert )
{
byte *buffer;
u16 csum=0;
int res;
unsigned nbytes;
u32 keyid[2];
char save_iv[8];
if( cert->is_protected ) { /* remove the protection */
DEK *dek = NULL;
MPI test_x;
u32 keyid[2];
CIPHER_HANDLE cipher_hd=NULL;
PKT_secret_cert *save_cert;
char save_iv[8];
switch( cert->protect.algo ) {
case CIPHER_ALGO_NONE: BUG(); break;
@ -64,63 +64,137 @@ check_elg( PKT_secret_cert *cert )
cipher_setkey( cipher_hd, dek->key, dek->keylen );
cipher_setiv( cipher_hd, NULL );
m_free(dek); /* pw is in secure memory, so m_free() burns it */
save_cert = copy_secret_cert( NULL, cert );
memcpy(save_iv, cert->protect.iv, 8 );
cipher_decrypt( cipher_hd, cert->protect.iv, cert->protect.iv, 8 );
mpi_set_secure(cert->d.elg.x );
/*fixme: maybe it is better to set the buffer secure with a
* new get_buffer_secure() function */
buffer = mpi_get_buffer( cert->d.elg.x, &nbytes, NULL );
cipher_decrypt( cipher_hd, buffer, buffer, nbytes );
test_x = mpi_alloc_secure( mpi_get_nlimbs(cert->d.elg.x) );
mpi_set_buffer( test_x, buffer, nbytes, 0 );
csum = checksum_mpi( test_x );
m_free( buffer );
switch( cert->pubkey_algo ) {
case PUBKEY_ALGO_ELGAMAL:
buffer = mpi_get_secure_buffer( cert->d.elg.x, &nbytes, NULL );
cipher_decrypt( cipher_hd, buffer, buffer, nbytes );
mpi_set_buffer( cert->d.elg.x, buffer, nbytes, 0 );
csum = checksum_mpi( cert->d.elg.x );
m_free( buffer );
break;
case PUBKEY_ALGO_DSA:
buffer = mpi_get_secure_buffer( cert->d.dsa.x, &nbytes, NULL );
cipher_decrypt( cipher_hd, buffer, buffer, nbytes );
mpi_set_buffer( cert->d.dsa.x, buffer, nbytes, 0 );
csum = checksum_mpi( cert->d.dsa.x );
m_free( buffer );
break;
#ifdef HAVE_RSA_CIPHER
case PUBKEY_ALGO_RSA:
csum = 0;
#define X(a) do { \
buffer = mpi_get_secure_buffer( cert->d.rsa.##a, \
&nbytes, NULL ); \
csum += checksum_u16( nbytes*8 ); \
cipher_decrypt( cipher_hd, buffer, buffer, nbytes ); \
csum += checksum( buffer, nbytes ); \
mpi_set_buffer(cert->d.rsa.##a, buffer, nbytes, 0 ); \
m_free( buffer ); \
} while(0)
X(d);
X(p);
X(q);
X(u);
#undef X
break;
#endif /* HAVE_RSA_CIPHER */
default: BUG();
}
cipher_close( cipher_hd );
/* now let's see wether we have used the right passphrase */
if( csum != cert->csum ) {
/* very bad kludge to work around an early bug */
csum -= checksum_u16( mpi_get_nbits(test_x) );
nbytes = mpi_get_nlimbs(test_x) * 4;
csum += checksum_u16( nbytes*8 );
if( cert->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
/* very bad kludge to work around an early bug */
csum -= checksum_u16( mpi_get_nbits(cert->d.elg.x) );
nbytes = mpi_get_nlimbs(cert->d.elg.x) * 4;
csum += checksum_u16( nbytes*8 );
if( !opt.batch && csum == cert->csum )
log_info("Probably you have an old key - use "
"\"--change-passphrase\" to convert.\n");
}
if( csum != cert->csum ) {
mpi_free(test_x);
copy_secret_cert( cert, save_cert );
free_secret_cert( save_cert );
memcpy( cert->protect.iv, save_iv, 8 );
return G10ERR_BAD_PASS;
}
if( !opt.batch )
}
switch( cert->pubkey_algo ) {
case PUBKEY_ALGO_ELGAMAL:
res = elg_check_secret_key( &cert->d.elg );
break;
case PUBKEY_ALGO_DSA:
res = dsa_check_secret_key( &cert->d.dsa );
break;
#ifdef HAVE_RSA_CIPHER
case PUBKEY_ALGO_RSA:
res = rsa_check_secret_key( &cert->d.rsa );
break;
#endif
default: BUG();
}
if( !res ) {
copy_secret_cert( cert, save_cert );
free_secret_cert( save_cert );
memcpy( cert->protect.iv, save_iv, 8 );
return G10ERR_BAD_PASS;
}
free_secret_cert( save_cert );
cert->is_protected = 0;
break;
default:
return G10ERR_CIPHER_ALGO; /* unsupported protection algorithm */
}
}
else { /* not protected */
switch( cert->pubkey_algo ) {
case PUBKEY_ALGO_ELGAMAL:
csum = checksum_mpi( cert->d.elg.x );
break;
case PUBKEY_ALGO_DSA:
csum = checksum_mpi( cert->d.dsa.x );
break;
#ifdef HAVE_RSA_CIPHER
case PUBKEY_ALGO_RSA:
csum =0;
buffer = mpi_get_buffer( cert->d.rsa.rsa_d, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_p, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_q, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_u, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
break;
#endif
default: BUG();
}
if( csum != cert->csum ) {
if( cert->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
/* very bad kludge to work around an early bug */
csum -= checksum_u16( mpi_get_nbits(cert->d.elg.x) );
nbytes = mpi_get_nlimbs(cert->d.elg.x) * 4;
csum += checksum_u16( nbytes*8 );
if( !opt.batch && csum == cert->csum )
log_info("Probably you have an old key - use "
"\"--change-passphrase\" to convert.\n");
}
mpi_swap( cert->d.elg.x, test_x );
res = elg_check_secret_key( &cert->d.elg );
mpi_swap( cert->d.elg.x, test_x );
if( !res ) {
mpi_free(test_x);
memcpy( cert->protect.iv, save_iv, 8 );
return G10ERR_BAD_PASS;
}
mpi_set(cert->d.elg.x, test_x);
mpi_free(test_x);
cert->is_protected = 0;
break;
default:
return G10ERR_CIPHER_ALGO; /* unsupported protection algorithm */
}
}
else { /* not protected */
csum = checksum_mpi( cert->d.elg.x );
if( csum != cert->csum ) {
/* very bad kludge to work around an early bug */
csum -= checksum_u16( mpi_get_nbits(cert->d.elg.x) );
nbytes = mpi_get_nlimbs(cert->d.elg.x) * 4;
csum += checksum_u16( nbytes*8 );
if( csum != cert->csum )
return G10ERR_CHECKSUM;
if( !opt.batch )
log_info("Probably you have an old key - use "
"\"--change-passphrase\" to convert.\n");
}
}
@ -128,171 +202,6 @@ check_elg( PKT_secret_cert *cert )
}
static int
check_dsa( PKT_secret_cert *cert )
{
byte *buffer;
u16 csum=0;
int res;
unsigned nbytes;
u32 keyid[2];
char save_iv[8];
if( cert->is_protected ) { /* remove the protection */
DEK *dek = NULL;
MPI test_x;
CIPHER_HANDLE cipher_hd=NULL;
switch( cert->protect.algo ) {
case CIPHER_ALGO_NONE: BUG(); break;
case CIPHER_ALGO_BLOWFISH:
case CIPHER_ALGO_CAST:
keyid_from_skc( cert, keyid );
if( cert->protect.s2k == 1 || cert->protect.s2k == 3 )
dek = get_passphrase_hash( keyid, NULL,
cert->protect.salt );
else
dek = get_passphrase_hash( keyid, NULL, NULL );
cipher_hd = cipher_open( cert->protect.algo,
CIPHER_MODE_AUTO_CFB, 1);
cipher_setkey( cipher_hd, dek->key, dek->keylen );
cipher_setiv( cipher_hd, NULL );
m_free(dek); /* pw is in secure memory, so m_free() burns it */
memcpy(save_iv, cert->protect.iv, 8 );
cipher_decrypt( cipher_hd, cert->protect.iv, cert->protect.iv, 8 );
mpi_set_secure(cert->d.dsa.x );
/*fixme: maybe it is better to set the buffer secure with a
* new get_buffer_secure() function */
buffer = mpi_get_buffer( cert->d.dsa.x, &nbytes, NULL );
cipher_decrypt( cipher_hd, buffer, buffer, nbytes );
test_x = mpi_alloc_secure( mpi_get_nlimbs(cert->d.dsa.x) );
mpi_set_buffer( test_x, buffer, nbytes, 0 );
csum = checksum_mpi( test_x );
m_free( buffer );
cipher_close( cipher_hd );
/* now let's see wether we have used the right passphrase */
if( csum != cert->csum ) {
mpi_free(test_x);
memcpy( cert->protect.iv, save_iv, 8 );
return G10ERR_BAD_PASS;
}
mpi_swap( cert->d.dsa.x, test_x );
res = dsa_check_secret_key( &cert->d.dsa );
mpi_swap( cert->d.dsa.x, test_x );
if( !res ) {
mpi_free(test_x);
memcpy( cert->protect.iv, save_iv, 8 );
return G10ERR_BAD_PASS;
}
mpi_set(cert->d.dsa.x, test_x);
mpi_free(test_x);
cert->is_protected = 0;
break;
default:
return G10ERR_CIPHER_ALGO; /* unsupport protection algorithm */
}
}
else { /* not protected */
csum = checksum_mpi( cert->d.dsa.x );
if( csum != cert->csum )
return G10ERR_CHECKSUM;
}
return 0;
}
#ifdef HAVE_RSA_CIPHER
/****************
* FIXME: fix checksum stuff
*/
static int
check_rsa( PKT_secret_cert *cert )
{
byte *buffer;
u16 csum=0;
int res;
unsigned nbytes;
u32 keyid[2];
if( cert->is_protected ) { /* remove the protection */
DEK *dek = NULL;
BLOWFISH_context *blowfish_ctx=NULL;
switch( cert->protect.algo ) {
/* FIXME: use test variables to check for the correct key */
case CIPHER_ALGO_NONE: BUG(); break;
case CIPHER_ALGO_BLOWFISH:
keyid_from_skc( cert, keyid );
dek = get_passphrase_hash( keyid, NULL, NULL );
blowfish_ctx = m_alloc_secure( sizeof *blowfish_ctx );
blowfish_setkey( blowfish_ctx, dek->key, dek->keylen );
m_free(dek); /* pw is in secure memory, so m_free() burns it */
blowfish_setiv( blowfish_ctx, NULL );
blowfish_decode_cfb( blowfish_ctx, cert->protect.iv,
cert->protect.iv, 8 );
csum = 0;
#define X(a) do { \
mpi_set_secure(cert->d.rsa.rsa_##a); \
buffer = mpi_get_buffer( cert->d.rsa.rsa_##a, &nbytes, NULL );\
csum += checksum_u16( nbytes*8 ); \
blowfish_decode_cfb( blowfish_ctx, buffer, buffer, nbytes ); \
csum += checksum( buffer, nbytes ); \
mpi_set_buffer(cert->d.rsa.rsa_##a, buffer, nbytes, 0 ); \
m_free( buffer ); \
} while(0)
X(d);
X(p);
X(q);
X(u);
#undef X
cert->is_protected = 0;
m_free( blowfish_ctx );
/* now let's see wether we have used the right passphrase */
if( csum != cert->csum )
return G10ERR_BAD_PASS;
res = rsa_check_secret_key( &cert->d.rsa );
if( !res )
return G10ERR_BAD_PASS;
break;
default:
return G10ERR_CIPHER_ALGO; /* unsupported protection algorithm */
}
}
else { /* not protected */
csum =0;
buffer = mpi_get_buffer( cert->d.rsa.rsa_d, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_p, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_q, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
buffer = mpi_get_buffer( cert->d.rsa.rsa_u, &nbytes, NULL );
csum += checksum_u16( nbytes*8 );
csum += checksum( buffer, nbytes );
m_free( buffer );
if( csum != cert->csum )
return G10ERR_CHECKSUM;
}
return 0;
}
#endif /*HAVE_RSA_CIPHER*/
/****************
* Check the secret key certificate
@ -307,16 +216,13 @@ check_secret_key( PKT_secret_cert *cert )
for(i=0; i < 3 && rc == G10ERR_BAD_PASS; i++ ) {
if( i )
log_error("Invalid passphrase; please try again ...\n");
if( cert->pubkey_algo == PUBKEY_ALGO_ELGAMAL )
rc = check_elg( cert );
else if( cert->pubkey_algo == PUBKEY_ALGO_DSA )
rc = check_dsa( cert );
#ifdef HAVE_RSA_CIPHER
else if( cert->pubkey_algo == PUBKEY_ALGO_RSA )
rc = check_rsa( cert );
#endif
else
rc = G10ERR_PUBKEY_ALGO;
switch( cert->pubkey_algo ) {
case PUBKEY_ALGO_ELGAMAL:
case PUBKEY_ALGO_DSA:
rc = do_check( cert );
break;
default: rc = G10ERR_PUBKEY_ALGO;
}
if( get_passphrase_fd() != -1 )
break;
}

686
g10/sign.c
View file

@ -39,9 +39,7 @@
static int
int
complete_sig( PKT_signature *sig, PKT_secret_cert *skc, MD_HANDLE md )
{
int rc=0;
@ -468,685 +466,3 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
static void
show_fingerprint( PKT_public_cert *pkc )
{
byte *array, *p;
size_t i, n;
p = array = fingerprint_from_pkc( pkc, &n );
tty_printf(" Fingerprint:");
if( n == 20 ) {
for(i=0; i < n ; i++, i++, p += 2 ) {
if( i == 10 )
tty_printf(" ");
tty_printf(" %02X%02X", *p, p[1] );
}
}
else {
for(i=0; i < n ; i++, p++ ) {
if( i && !(i%8) )
tty_printf(" ");
tty_printf(" %02X", *p );
}
}
tty_printf("\n");
m_free(array);
}
/****************
* Ask wether the user is willing to sign the key. Return true if so.
*/
static int
sign_it_p( PKT_public_cert *pkc, PKT_user_id *uid )
{
char *answer;
int yes;
tty_printf("\nAre you really sure that you want so sign this key:\n\n"
"%4u%c/%08lX %s ",
nbits_from_pkc( pkc ),
pubkey_letter( pkc->pubkey_algo ),
(ulong)keyid_from_pkc( pkc, NULL ),
datestr_from_pkc( pkc ) );
tty_print_string( uid->name, uid->len );
tty_printf("\n");
show_fingerprint(pkc);
tty_printf("\n");
answer = tty_get("Sign this key? ");
tty_kill_prompt();
yes = answer_is_yes(answer);
m_free(answer);
return yes;
}
/****************
* Check the keysigs and set the flags to indicate errors.
* Usage of nodes flag bits:
* Bit 0 = bad signature
* 1 = no public key
* 2 = other error
* Returns true if error found.
*/
static int
check_all_keysigs( KBNODE keyblock )
{
KBNODE kbctx;
KBNODE node;
int rc;
int inv_sigs = 0;
int no_key = 0;
int oth_err = 0;
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
if( node->pkt->pkttype == PKT_SIGNATURE
&& (node->pkt->pkt.signature->sig_class&~3) == 0x10 ) {
PKT_signature *sig = node->pkt->pkt.signature;
int sigrc;
tty_printf("sig");
switch( (rc = check_key_signature( keyblock, node,NULL)) ) {
case 0: node->flag = 0; sigrc = '!'; break;
case G10ERR_BAD_SIGN: inv_sigs++; node->flag = 1; sigrc = '-'; break;
case G10ERR_NO_PUBKEY: no_key++; node->flag = 2; sigrc = '?'; break;
default: oth_err++; node->flag = 4; sigrc = '%'; break;
}
tty_printf("%c %08lX %s ",
sigrc, sig->keyid[1], datestr_from_sig(sig));
if( sigrc == '%' )
tty_printf("[%s] ", g10_errstr(rc) );
else if( sigrc == '?' )
;
else {
size_t n;
char *p = get_user_id( sig->keyid, &n );
tty_print_string( p, n > 40? 40 : n );
m_free(p);
}
tty_printf("\n");
/* FIXME: update the trustdb */
}
}
if( inv_sigs )
tty_printf("%d bad signatures\n", inv_sigs );
if( no_key )
tty_printf("No public key for %d signatures\n", no_key );
if( oth_err )
tty_printf("%d signatures not checked due to errors\n", oth_err );
return inv_sigs || no_key || oth_err;
}
/****************
* Ask and remove invalid signatures are to be removed.
*/
static int
remove_keysigs( KBNODE keyblock, u32 *keyid, int all )
{
KBNODE kbctx;
KBNODE node;
char *answer;
int yes;
int count;
count = 0;
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
if( ((node->flag & 7) || all )
&& node->pkt->pkttype == PKT_SIGNATURE
&& (node->pkt->pkt.signature->sig_class&~3) == 0x10 ) {
PKT_signature *sig = node->pkt->pkt.signature;
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1] ) {
/* fixme: skip self-sig */
}
tty_printf("\n \"%08lX %s ",
sig->keyid[1], datestr_from_sig(sig));
if( node->flag & 6 )
tty_printf("[User name not available] ");
else {
size_t n;
char *p = get_user_id( sig->keyid, &n );
tty_print_string( p, n );
m_free(p);
}
tty_printf("\"\n");
if( node->flag & 1 )
tty_printf("This is a BAD signature!\n");
else if( node->flag & 2 )
tty_printf("Public key not available.\n");
else if( node->flag & 4 )
tty_printf("The signature could not be checked!\n");
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1] )
continue; /* do not remove self-signatures */
answer = tty_get("\nRemove this signature? ");
tty_kill_prompt();
if( answer_is_yes(answer) ) {
node->flag |= 128; /* use bit 7 to mark this node */
count++;
}
m_free(answer);
}
}
if( !count )
return 0; /* nothing to remove */
answer = tty_get("Do you really want to remove the selected signatures? ");
tty_kill_prompt();
yes = answer_is_yes(answer);
m_free(answer);
if( !yes )
return 0;
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 1)) ; ) {
if( node->flag & 128)
delete_kbnode(node );
}
return 1;
}
/****************
* This functions signs the key of USERNAME with all users listed in
* LOCUSR. If LOCUSR is NULL the default secret certificate will
* be used. This works on all keyrings, so there is no armor or
* compress stuff here.
*/
int
sign_key( const char *username, STRLIST locusr )
{
md_filter_context_t mfx;
int rc = 0;
SKC_LIST skc_list = NULL;
SKC_LIST skc_rover = NULL;
KBNODE keyblock = NULL;
KBNODE kbctx, node;
KBPOS kbpos;
PKT_public_cert *pkc;
u32 pkc_keyid[2];
char *answer;
memset( &mfx, 0, sizeof mfx);
/* search the userid */
rc = find_keyblock_byname( &kbpos, username );
if( rc ) {
log_error("user '%s' not found\n", username );
goto leave;
}
/* build a list of all signators */
rc=build_skc_list( locusr, &skc_list, 0, 1 );
if( rc )
goto leave;
/* read the keyblock */
rc = read_keyblock( &kbpos, &keyblock );
if( rc ) {
log_error("error reading the certificate: %s\n", g10_errstr(rc) );
goto leave;
}
/* get the keyid from the keyblock */
node = find_kbnode( keyblock, PKT_PUBLIC_CERT );
if( !node ) {
log_error("Oops; public key not found anymore!\n");
rc = G10ERR_GENERAL;
goto leave;
}
pkc = node->pkt->pkt.public_cert;
keyid_from_pkc( pkc, pkc_keyid );
log_info("Checking signatures of this public key certificate:\n");
tty_printf("pub %4u%c/%08lX %s ",
nbits_from_pkc( pkc ),
pubkey_letter( pkc->pubkey_algo ),
pkc_keyid[1], datestr_from_pkc(pkc) );
{
size_t n;
char *p = get_user_id( pkc_keyid, &n );
tty_print_string( p, n > 40? 40 : n );
m_free(p);
tty_printf("\n");
}
clear_kbnode_flags( keyblock );
if( check_all_keysigs( keyblock ) ) {
if( !opt.batch ) {
/* ask wether we really should do anything */
answer = tty_get("To you want to remove some of the invalid sigs? ");
tty_kill_prompt();
if( answer_is_yes(answer) )
remove_keysigs( keyblock, pkc_keyid, 0 );
m_free(answer);
}
}
/* check wether we have already signed it */
for( skc_rover = skc_list; skc_rover; skc_rover = skc_rover->next ) {
u32 akeyid[2];
keyid_from_skc( skc_rover->skc, akeyid );
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
if( node->pkt->pkttype == PKT_SIGNATURE
&& (node->pkt->pkt.signature->sig_class&~3) == 0x10 ) {
if( akeyid[0] == node->pkt->pkt.signature->keyid[0]
&& akeyid[1] == node->pkt->pkt.signature->keyid[1] ) {
log_info("Already signed by keyid %08lX\n",
(ulong)akeyid[1] );
skc_rover->mark = 1;
}
}
}
}
for( skc_rover = skc_list; skc_rover; skc_rover = skc_rover->next ) {
if( !skc_rover->mark )
break;
}
if( !skc_rover ) {
log_info("Nothing to sign\n");
goto leave;
}
/* Loop over all signers and all user ids and sign */
for( skc_rover = skc_list; skc_rover; skc_rover = skc_rover->next ) {
if( skc_rover->mark )
continue;
for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
if( node->pkt->pkttype == PKT_USER_ID ) {
if( sign_it_p( pkc, node->pkt->pkt.user_id ) ) {
PACKET *pkt;
PKT_signature *sig;
rc = make_keysig_packet( &sig, pkc,
node->pkt->pkt.user_id,
skc_rover->skc,
0x10,
DIGEST_ALGO_RMD160 );
if( rc ) {
log_error("make_keysig_packet failed: %s\n", g10_errstr(rc));
goto leave;
}
pkt = m_alloc_clear( sizeof *pkt );
pkt->pkttype = PKT_SIGNATURE;
pkt->pkt.signature = sig;
insert_kbnode( node, new_kbnode(pkt), PKT_USER_ID );
}
}
}
}
rc = update_keyblock( &kbpos, keyblock );
if( rc ) {
log_error("update_keyblock failed: %s\n", g10_errstr(rc) );
goto leave;
}
leave:
release_kbnode( keyblock );
release_skc_list( skc_list );
md_close( mfx.md );
return rc;
}
int
edit_keysigs( const char *username )
{
int rc = 0;
KBNODE keyblock = NULL;
KBNODE node;
KBPOS kbpos;
PKT_public_cert *pkc;
u32 pkc_keyid[2];
/* search the userid */
rc = find_keyblock_byname( &kbpos, username );
if( rc ) {
log_error("%s: user not found\n", username );
goto leave;
}
/* read the keyblock */
rc = read_keyblock( &kbpos, &keyblock );
if( rc ) {
log_error("%s: certificate read problem: %s\n", username, g10_errstr(rc) );
goto leave;
}
/* get the keyid from the keyblock */
node = find_kbnode( keyblock, PKT_PUBLIC_CERT );
if( !node ) {
log_error("Oops; public key not found anymore!\n");
rc = G10ERR_GENERAL;
goto leave;
}
pkc = node->pkt->pkt.public_cert;
keyid_from_pkc( pkc, pkc_keyid );
log_info("Checking signatures of this public key certificate:\n");
tty_printf("pub %4u%c/%08lX %s ",
nbits_from_pkc( pkc ),
pubkey_letter( pkc->pubkey_algo ),
pkc_keyid[1], datestr_from_pkc(pkc) );
{
size_t n;
char *p = get_user_id( pkc_keyid, &n );
tty_print_string( p, n > 40? 40 : n );
m_free(p);
tty_printf("\n");
}
clear_kbnode_flags( keyblock );
check_all_keysigs( keyblock );
if( remove_keysigs( keyblock, pkc_keyid, 1 ) ) {
rc = update_keyblock( &kbpos, keyblock );
if( rc ) {
log_error("update_keyblock failed: %s\n", g10_errstr(rc) );
goto leave;
}
}
leave:
release_kbnode( keyblock );
return rc;
}
/****************
* Delete a public or secret key from a keyring.
*/
int
delete_key( const char *username, int secret )
{
int rc = 0;
KBNODE keyblock = NULL;
KBNODE node;
KBPOS kbpos;
PKT_public_cert *pkc = NULL;
PKT_secret_cert *skc = NULL;
u32 keyid[2];
int okay=0;
/* search the userid */
rc = secret? find_secret_keyblock_byname( &kbpos, username )
: find_keyblock_byname( &kbpos, username );
if( rc ) {
log_error("%s: user not found\n", username );
goto leave;
}
/* read the keyblock */
rc = read_keyblock( &kbpos, &keyblock );
if( rc ) {
log_error("%s: read problem: %s\n", username, g10_errstr(rc) );
goto leave;
}
/* get the keyid from the keyblock */
node = find_kbnode( keyblock, secret? PKT_SECRET_CERT:PKT_PUBLIC_CERT );
if( !node ) {
log_error("Oops; key not found anymore!\n");
rc = G10ERR_GENERAL;
goto leave;
}
if( secret ) {
skc = node->pkt->pkt.secret_cert;
keyid_from_skc( skc, keyid );
}
else {
pkc = node->pkt->pkt.public_cert;
keyid_from_pkc( pkc, keyid );
rc = seckey_available( keyid );
if( !rc ) {
log_error(_(
"there is a secret key for this public key!\n"));
log_info(_(
"use option \"--delete-secret-key\" to delete it first.\n"));
rc = -1;
}
else if( rc != G10ERR_NO_SECKEY )
log_error("%s: get secret key: %s\n", username, g10_errstr(rc) );
else
rc = 0;
}
if( rc )
rc = 0;
else if( opt.batch && secret )
log_error(_("can't do that in batch-mode\n"));
else if( opt.batch && opt.answer_yes )
okay++;
else if( opt.batch )
log_error(_("can't do that in batch-mode without \"--yes\"\n"));
else {
char *p;
size_t n;
if( secret )
tty_printf("sec %4u%c/%08lX %s ",
nbits_from_skc( skc ),
pubkey_letter( skc->pubkey_algo ),
keyid[1], datestr_from_skc(skc) );
else
tty_printf("pub %4u%c/%08lX %s ",
nbits_from_pkc( pkc ),
pubkey_letter( pkc->pubkey_algo ),
keyid[1], datestr_from_pkc(pkc) );
p = get_user_id( keyid, &n );
tty_print_string( p, n );
m_free(p);
tty_printf("\n\n");
p = tty_get(_("Delete this key from the keyring? "));
tty_kill_prompt();
if( secret && answer_is_yes(p)) {
/* I think it is not required to check a passphrase; if
* the user is so stupid to let others access his secret keyring
* (and has no backup) - it is up him to read some very
* basic texts about security.
*/
m_free(p);
p = tty_get(_("This is a secret key! - really delete? "));
}
if( answer_is_yes(p) )
okay++;
m_free(p);
}
if( okay ) {
rc = delete_keyblock( &kbpos );
if( rc ) {
log_error("delete_keyblock failed: %s\n", g10_errstr(rc) );
goto leave;
}
}
leave:
release_kbnode( keyblock );
return rc;
}
int
change_passphrase( const char *username )
{
int rc = 0;
KBNODE keyblock = NULL;
KBNODE node;
KBPOS kbpos;
PKT_secret_cert *skc;
u32 skc_keyid[2];
char *answer;
int changed=0;
/* search the userid */
rc = find_secret_keyblock_byname( &kbpos, username );
if( rc ) {
log_error("secret key for user '%s' not found\n", username );
goto leave;
}
/* read the keyblock */
rc = read_keyblock( &kbpos, &keyblock );
if( rc ) {
log_error("error reading the certificate: %s\n", g10_errstr(rc) );
goto leave;
}
/* get the keyid from the keyblock */
node = find_kbnode( keyblock, PKT_SECRET_CERT );
if( !node ) {
log_error("Oops; secret key not found anymore!\n");
rc = G10ERR_GENERAL;
goto leave;
}
skc = node->pkt->pkt.secret_cert;
keyid_from_skc( skc, skc_keyid );
tty_printf("sec %4u%c/%08lX %s ",
nbits_from_skc( skc ),
pubkey_letter( skc->pubkey_algo ),
skc_keyid[1], datestr_from_skc(skc) );
{
size_t n;
char *p = get_user_id( skc_keyid, &n );
tty_print_string( p, n );
m_free(p);
tty_printf("\n");
}
clear_kbnode_flags( keyblock );
switch( is_secret_key_protected( skc ) ) {
case -1:
rc = G10ERR_PUBKEY_ALGO;
break;
case 0:
tty_printf("This key is not protected.\n");
break;
default:
tty_printf("Key is protected.\n");
rc = check_secret_key( skc );
break;
}
if( rc )
tty_printf("Can't edit this key: %s\n", g10_errstr(rc));
else {
DEK *dek = m_alloc_secure( sizeof *dek + 8 );
byte *salt = (byte*)dek + sizeof( *dek );
tty_printf( "Enter the new passphrase for this secret key.\n\n" );
for(;;) {
dek->algo = CIPHER_ALGO_BLOWFISH;
randomize_buffer(salt, 8, 1);
rc = make_dek_from_passphrase( dek , 2, salt );
if( rc == -1 ) {
rc = 0;
tty_printf( "You don't want a passphrase -"
" this is probably a *bad* idea!\n\n");
answer = tty_get("Do you really want to do this? ");
tty_kill_prompt();
if( answer_is_yes(answer) )
changed++;
m_free(answer);
break;
}
else if( rc == G10ERR_PASSPHRASE ) {
tty_printf("passphrase not correctly repeated; try again.\n");
}
else if( rc ) {
m_free(dek); dek = NULL;
log_error("Error getting the passphrase: %s\n", g10_errstr(rc));
break;
}
else { /* okay */
skc->protect.algo = CIPHER_ALGO_BLOWFISH;
skc->protect.s2k = 1;
skc->protect.hash = DIGEST_ALGO_RMD160;
memcpy(skc->protect.salt, salt, 8);
randomize_buffer(skc->protect.iv, 8, 1);
rc = protect_secret_key( skc, dek );
if( rc )
log_error("protect_secret_key failed: %s\n", g10_errstr(rc) );
else
changed++;
break;
}
}
m_free(dek);
}
if( changed ) {
rc = update_keyblock( &kbpos, keyblock );
if( rc ) {
log_error("update_keyblock failed: %s\n", g10_errstr(rc) );
goto leave;
}
}
leave:
release_kbnode( keyblock );
return rc;
}
/****************
* Create a signature packet for the given public key certificate
* and the user id and return it in ret_sig. User signature class SIGCLASS
* user-id is not used (and may be NULL if sigclass is 0x20)
*/
int
make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
PKT_user_id *uid, PKT_secret_cert *skc,
int sigclass, int digest_algo )
{
PKT_signature *sig;
int rc=0;
MD_HANDLE md;
assert( (sigclass >= 0x10 && sigclass <= 0x13) || sigclass == 0x20 );
md = md_open( digest_algo, 0 );
/* hash the public key certificate and the user id */
hash_public_cert( md, pkc );
if( sigclass != 0x20 )
md_write( md, uid->name, uid->len );
/* and make the signature packet */
sig = m_alloc_clear( sizeof *sig );
sig->pubkey_algo = skc->pubkey_algo;
sig->timestamp = make_timestamp();
sig->sig_class = sigclass;
md_putc( md, sig->sig_class );
{ u32 a = sig->timestamp;
md_putc( md, (a >> 24) & 0xff );
md_putc( md, (a >> 16) & 0xff );
md_putc( md, (a >> 8) & 0xff );
md_putc( md, a & 0xff );
}
md_final(md);
rc = complete_sig( sig, skc, md );
md_close( md );
if( rc )
free_seckey_enc( sig );
else
*ret_sig = sig;
return rc;
}