X-Git-Url: https://the.earth.li/gitweb/?a=blobdiff_plain;f=sigcheck.c;h=0fe87b55ac891b60b86cbee6a22cd880495fbed8;hb=42977c5361ef21c99bc157e9c7edbba49243014f;hp=d0ca3d1965e8a8c8fa3f2254d0b8f5ea3f8364ef;hpb=ec38d8bd7e8a66645e75e3d6c8b9dadb5dd85ec7;p=onak.git
diff --git a/sigcheck.c b/sigcheck.c
index d0ca3d1..0fe87b5 100644
--- a/sigcheck.c
+++ b/sigcheck.c
@@ -13,13 +13,12 @@
* more details.
*
* You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * this program. If not, see .
*/
#include
-#include "config.h"
+#include "build-config.h"
#include "decodekey.h"
#include "keyid.h"
#include "keystructs.h"
@@ -47,24 +46,16 @@ int check_packet_sighash(struct openpgp_publickey *key,
struct sha1_ctx sha1_context;
struct sha1x_ctx sha1x_context;
struct md5_ctx md5_context;
-#ifdef NETTLE_WITH_RIPEMD160
+#ifdef HAVE_NETTLE
struct ripemd160_ctx ripemd160_context;
-#endif
-#ifdef NETTLE_WITH_SHA224
struct sha224_ctx sha224_context;
-#endif
-#ifdef NETTLE_WITH_SHA256
struct sha256_ctx sha256_context;
-#endif
-#ifdef NETTLE_WITH_SHA384
struct sha384_ctx sha384_context;
-#endif
-#ifdef NETTLE_WITH_SHA512
struct sha512_ctx sha512_context;
#endif
uint8_t keyheader[3];
uint8_t packetheader[5];
- uint8_t v4trailer[6];
+ uint8_t trailer[10];
uint8_t hash[64];
uint8_t *hashdata[8];
size_t hashlen[8];
@@ -72,18 +63,18 @@ int check_packet_sighash(struct openpgp_publickey *key,
uint64_t keyid;
onak_status_t res;
- keyheader[0] = 0x99;
- keyheader[1] = key->publickey->length >> 8;
- keyheader[2] = key->publickey->length & 0xFF;
- hashdata[0] = keyheader;
- hashlen[0] = 3;
- hashdata[1] = key->publickey->data;
- hashlen[1] = key->publickey->length;
- chunks = 2;
-
switch (sig->data[0]) {
case 2:
case 3:
+ keyheader[0] = 0x99;
+ keyheader[1] = key->publickey->length >> 8;
+ keyheader[2] = key->publickey->length & 0xFF;
+ hashdata[0] = keyheader;
+ hashlen[0] = 3;
+ hashdata[1] = key->publickey->data;
+ hashlen[1] = key->publickey->length;
+ chunks = 2;
+
hashtype = sig->data[16];
if (packet != NULL) {
@@ -108,6 +99,15 @@ int check_packet_sighash(struct openpgp_publickey *key,
sighash = &sig->data[17];
break;
case 4:
+ keyheader[0] = 0x99;
+ keyheader[1] = key->publickey->length >> 8;
+ keyheader[2] = key->publickey->length & 0xFF;
+ hashdata[0] = keyheader;
+ hashlen[0] = 3;
+ hashdata[1] = key->publickey->data;
+ hashlen[1] = key->publickey->length;
+ chunks = 2;
+
hashtype = sig->data[3];
/* Check to see if this is an X509 based signature */
@@ -176,16 +176,84 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
chunks++;
- v4trailer[0] = 4;
- v4trailer[1] = 0xFF;
- v4trailer[2] = siglen >> 24;
- v4trailer[3] = (siglen >> 16) & 0xFF;
- v4trailer[4] = (siglen >> 8) & 0xFF;
- v4trailer[5] = siglen & 0xFF;
- hashdata[chunks] = v4trailer;
+ trailer[0] = 4;
+ trailer[1] = 0xFF;
+ trailer[2] = siglen >> 24;
+ trailer[3] = (siglen >> 16) & 0xFF;
+ trailer[4] = (siglen >> 8) & 0xFF;
+ trailer[5] = siglen & 0xFF;
+ hashdata[chunks] = trailer;
hashlen[chunks] = 6;
chunks++;
+ unhashedlen = (sig->data[siglen] << 8) +
+ sig->data[siglen + 1];
+ sighash = &sig->data[siglen + unhashedlen + 2];
+ break;
+ case 5:
+ keyheader[0] = 0x9A;
+ keyheader[1] = 0;
+ keyheader[2] = 0;
+ keyheader[3] = key->publickey->length >> 8;
+ keyheader[4] = key->publickey->length & 0xFF;
+ hashdata[0] = keyheader;
+ hashlen[0] = 5;
+ hashdata[1] = key->publickey->data;
+ hashlen[1] = key->publickey->length;
+ chunks = 2;
+
+ hashtype = sig->data[3];
+
+ if (packet != NULL) {
+ if (packet->tag == OPENPGP_PACKET_PUBLICSUBKEY) {
+ packetheader[0] = 0x9A;
+ packetheader[1] = 0;
+ packetheader[2] = 0;
+ packetheader[3] = packet->length >> 8;
+ packetheader[4] = packet->length & 0xFF;
+ hashdata[chunks] = packetheader;
+ hashlen[chunks] = 5;
+ chunks++;
+ } else if (packet->tag == OPENPGP_PACKET_UID ||
+ packet->tag == OPENPGP_PACKET_UAT) {
+ packetheader[0] = (packet->tag ==
+ OPENPGP_PACKET_UID) ? 0xB4 : 0xD1;
+ packetheader[1] = packet->length >> 24;
+ packetheader[2] = (packet->length >> 16) & 0xFF;
+ packetheader[3] = (packet->length >> 8) & 0xFF;
+ packetheader[4] = packet->length & 0xFF;
+ hashdata[chunks] = packetheader;
+ hashlen[chunks] = 5;
+ chunks++;
+ }
+ hashdata[chunks] = packet->data;
+ hashlen[chunks] = packet->length;
+ chunks++;
+ }
+
+ hashdata[chunks] = sig->data;
+ hashlen[chunks] = siglen = (sig->data[4] << 8) +
+ sig->data[5] + 6;;
+ if (siglen > sig->length) {
+ /* Signature data exceed packet length, bogus */
+ return 0;
+ }
+ chunks++;
+
+ trailer[0] = 5;
+ trailer[1] = 0xFF;
+ trailer[2] = 0;
+ trailer[3] = 0;
+ trailer[4] = 0;
+ trailer[5] = 0;
+ trailer[6] = siglen >> 24;
+ trailer[7] = (siglen >> 16) & 0xFF;
+ trailer[8] = (siglen >> 8) & 0xFF;
+ trailer[9] = siglen & 0xFF;
+ hashdata[chunks] = trailer;
+ hashlen[chunks] = 10;
+ chunks++;
+
unhashedlen = (sig->data[siglen] << 8) +
sig->data[siglen + 1];
sighash = &sig->data[siglen + unhashedlen + 2];
@@ -213,8 +281,15 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
sha1_digest(&sha1_context, 20, hash);
break;
+ case OPENPGP_HASH_SHA1X:
+ sha1x_init(&sha1x_context);
+ for (i = 0; i < chunks; i++) {
+ sha1x_update(&sha1x_context, hashlen[i], hashdata[i]);
+ }
+ sha1x_digest(&sha1x_context, 20, hash);
+ break;
+#ifdef HAVE_NETTLE
case OPENPGP_HASH_RIPEMD160:
-#ifdef NETTLE_WITH_RIPEMD160
ripemd160_init(&ripemd160_context);
for (i = 0; i < chunks; i++) {
ripemd160_update(&ripemd160_context, hashlen[i],
@@ -223,19 +298,7 @@ int check_packet_sighash(struct openpgp_publickey *key,
ripemd160_digest(&ripemd160_context, RIPEMD160_DIGEST_SIZE,
hash);
break;
-#else
- logthing(LOGTHING_INFO, "RIPEMD160 support not available.");
- return -1;
-#endif
- case OPENPGP_HASH_SHA1X:
- sha1x_init(&sha1x_context);
- for (i = 0; i < chunks; i++) {
- sha1x_update(&sha1x_context, hashlen[i], hashdata[i]);
- }
- sha1x_digest(&sha1x_context, 20, hash);
- break;
case OPENPGP_HASH_SHA224:
-#ifdef NETTLE_WITH_SHA224
sha224_init(&sha224_context);
for (i = 0; i < chunks; i++) {
sha224_update(&sha224_context, hashlen[i],
@@ -243,12 +306,7 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
sha224_digest(&sha224_context, SHA224_DIGEST_SIZE, hash);
break;
-#else
- logthing(LOGTHING_INFO, "SHA224 support not available.");
- return -1;
-#endif
case OPENPGP_HASH_SHA256:
-#ifdef NETTLE_WITH_SHA256
sha256_init(&sha256_context);
for (i = 0; i < chunks; i++) {
sha256_update(&sha256_context, hashlen[i],
@@ -256,12 +314,7 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
sha256_digest(&sha256_context, SHA256_DIGEST_SIZE, hash);
break;
-#else
- logthing(LOGTHING_INFO, "SHA256 support not available.");
- return -1;
-#endif
case OPENPGP_HASH_SHA384:
-#ifdef NETTLE_WITH_SHA384
sha384_init(&sha384_context);
for (i = 0; i < chunks; i++) {
sha384_update(&sha384_context, hashlen[i],
@@ -269,12 +322,7 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
sha384_digest(&sha384_context, SHA384_DIGEST_SIZE, hash);
break;
-#else
- logthing(LOGTHING_INFO, "SHA384 support not available.");
- return -1;
-#endif
case OPENPGP_HASH_SHA512:
-#ifdef NETTLE_WITH_SHA512
sha512_init(&sha512_context);
for (i = 0; i < chunks; i++) {
sha512_update(&sha512_context, hashlen[i],
@@ -282,9 +330,6 @@ int check_packet_sighash(struct openpgp_publickey *key,
}
sha512_digest(&sha512_context, SHA512_DIGEST_SIZE, hash);
break;
-#else
- logthing(LOGTHING_INFO, "SHA512 support not available.");
- return -1;
#endif
default:
get_keyid(key, &keyid);