#include "rsa.h"
#include "pkcs1.h"
-/* List of all PKCS's in SILC. PKCS's don't support SIM's thus
- only static declarations are possible. XXX: I hope this to change
- real soon. */
-SilcPKCSObject silc_pkcs_list[] =
+/* Dynamically registered list of PKCS. */
+SilcDList silc_pkcs_list = NULL;
+
+/* Static list of PKCS for silc_pkcs_register_default(). */
+SilcPKCSObject silc_default_pkcs[] =
{
/* RSA with PKCS #1 (Uses directly routines from Raw RSA operations) */
- { "rsa", &silc_rsa_data_context,
+ { "rsa",
silc_rsa_init, silc_rsa_clear_keys, silc_rsa_get_public_key,
silc_rsa_get_private_key, silc_rsa_set_public_key,
silc_rsa_set_private_key, silc_rsa_context_len,
- silc_rsa_data_context_len, silc_rsa_set_arg,
silc_pkcs1_encrypt, silc_pkcs1_decrypt,
silc_pkcs1_sign, silc_pkcs1_verify },
/* Raw RSA operations */
- { "rsa-raw", &silc_rsa_data_context,
+ { "rsa-raw",
silc_rsa_init, silc_rsa_clear_keys, silc_rsa_get_public_key,
silc_rsa_get_private_key, silc_rsa_set_public_key,
silc_rsa_set_private_key, silc_rsa_context_len,
- silc_rsa_data_context_len, silc_rsa_set_arg,
silc_rsa_encrypt, silc_rsa_decrypt,
silc_rsa_sign, silc_rsa_verify },
NULL, NULL, NULL, NULL, NULL, NULL }
};
-/* Allocates a new SilcPKCS object. The new allocated object is returned
- to the 'new_pkcs' argument. This function also initializes the data
- context structure. Function returns 1 on success and 0 on error.
+/* Register a new PKCS into SILC. This is used at the initialization of
+ the SILC. */
-*/
-int silc_pkcs_alloc(const unsigned char *name, SilcPKCS *new_pkcs)
+bool silc_pkcs_register(SilcPKCSObject *pkcs)
{
- int i;
+ SilcPKCSObject *new;
+
+ SILC_LOG_DEBUG(("Registering new PKCS `%s'", pkcs->name));
+
+ new = silc_calloc(1, sizeof(*new));
+ new->name = strdup(pkcs->name);
+ new->init = pkcs->init;
+ new->clear_keys = pkcs->clear_keys;
+ new->get_public_key = pkcs->get_public_key;
+ new->get_private_key = pkcs->get_private_key;
+ new->set_public_key = pkcs->set_public_key;
+ new->set_private_key = pkcs->set_private_key;
+ new->context_len = pkcs->context_len;
+ new->encrypt = pkcs->encrypt;
+ new->decrypt = pkcs->decrypt;
+ new->sign = pkcs->sign;
+ new->verify = pkcs->verify;
+
+ /* Add to list */
+ if (silc_pkcs_list == NULL)
+ silc_pkcs_list = silc_dlist_init();
+ silc_dlist_add(silc_pkcs_list, new);
- SILC_LOG_DEBUG(("Allocating new PKCS object"));
+ return TRUE;
+}
- for (i = 0; silc_pkcs_list[i].name; i++) {
- if (!strcmp(silc_pkcs_list[i].name, name))
- break;
- }
+/* Unregister a PKCS from the SILC. */
+
+bool silc_pkcs_unregister(SilcPKCSObject *pkcs)
+{
+ SilcPKCSObject *entry;
+
+ SILC_LOG_DEBUG(("Unregistering PKCS"));
- if (silc_pkcs_list[i].name == NULL)
+ if (!silc_pkcs_list)
return FALSE;
- *new_pkcs = silc_calloc(1, sizeof(**new_pkcs));
+ silc_dlist_start(silc_pkcs_list);
+ while ((entry = silc_dlist_get(silc_pkcs_list)) != SILC_LIST_END) {
+ if (pkcs == SILC_ALL_PKCS || entry == pkcs) {
+ silc_dlist_del(silc_pkcs_list, entry);
+
+ if (silc_dlist_count(silc_pkcs_list) == 0) {
+ silc_dlist_uninit(silc_pkcs_list);
+ silc_pkcs_list = NULL;
+ }
+
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/* Function that registers all the default PKCS (all builtin PKCS).
+ The application may use this to register the default PKCS if specific
+ PKCS in any specific order is not wanted. */
+
+bool silc_pkcs_register_default(void)
+{
+ int i;
- /* Set the pointers */
- (*new_pkcs)->pkcs = &silc_pkcs_list[i];
- (*new_pkcs)->pkcs->data_context =
- silc_calloc(1, (*new_pkcs)->pkcs->data_context_len());
- (*new_pkcs)->context = silc_calloc(1, (*new_pkcs)->pkcs->context_len());
- (*new_pkcs)->get_key_len = silc_pkcs_get_key_len;
+ for (i = 0; silc_default_pkcs[i].name; i++)
+ silc_pkcs_register(&(silc_default_pkcs[i]));
return TRUE;
}
+/* Allocates a new SilcPKCS object. The new allocated object is returned
+ to the 'new_pkcs' argument. */
+
+bool silc_pkcs_alloc(const unsigned char *name, SilcPKCS *new_pkcs)
+{
+ SilcPKCSObject *entry;
+
+ SILC_LOG_DEBUG(("Allocating new PKCS object"));
+
+ if (silc_pkcs_list) {
+ silc_dlist_start(silc_pkcs_list);
+ while ((entry = silc_dlist_get(silc_pkcs_list)) != SILC_LIST_END) {
+ if (!strcmp(entry->name, name)) {
+ *new_pkcs = silc_calloc(1, sizeof(**new_pkcs));
+ (*new_pkcs)->pkcs = entry;
+ (*new_pkcs)->context = silc_calloc(1, entry->context_len());
+ (*new_pkcs)->get_key_len = silc_pkcs_get_key_len;
+ return TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+}
+
/* Free's the PKCS object */
void silc_pkcs_free(SilcPKCS pkcs)
{
if (pkcs)
silc_free(pkcs->context);
+ silc_free(pkcs);
}
/* Return TRUE if PKCS algorithm `name' is supported. */
int silc_pkcs_is_supported(const unsigned char *name)
{
- int i;
-
- if (!name)
- return FALSE;
+ SilcPKCSObject *entry;
- for (i = 0; silc_pkcs_list[i].name; i++) {
- if (!strcmp(silc_pkcs_list[i].name, name))
- return TRUE;
+ if (silc_pkcs_list) {
+ silc_dlist_start(silc_pkcs_list);
+ while ((entry = silc_dlist_get(silc_pkcs_list)) != SILC_LIST_END) {
+ if (!strcmp(entry->name, name))
+ return TRUE;
+ }
}
return FALSE;
/* Returns comma separated list of supported PKCS algorithms */
-char *silc_pkcs_get_supported()
+char *silc_pkcs_get_supported(void)
{
+ SilcPKCSObject *entry;
char *list = NULL;
- int i, len;
+ int len;
len = 0;
- for (i = 0; silc_pkcs_list[i].name; i++) {
- len += strlen(silc_pkcs_list[i].name);
- list = silc_realloc(list, len + 1);
-
- memcpy(list + (len - strlen(silc_pkcs_list[i].name)),
- silc_pkcs_list[i].name, strlen(silc_pkcs_list[i].name));
- memcpy(list + len, ",", 1);
- len++;
+ if (silc_pkcs_list) {
+ silc_dlist_start(silc_pkcs_list);
+ while ((entry = silc_dlist_get(silc_pkcs_list)) != SILC_LIST_END) {
+ len += strlen(entry->name);
+ list = silc_realloc(list, len + 1);
+
+ memcpy(list + (len - strlen(entry->name)),
+ entry->name, strlen(entry->name));
+ memcpy(list + len, ",", 1);
+ len++;
+ }
}
list[len - 1] = 0;
pkcs_len + identifier_len > totlen)
goto err;
- /* See if we support this algorithm */
- if (!silc_pkcs_is_supported(pkcs_name)) {
- SILC_LOG_DEBUG(("Unsupported PKCS %s", pkcs_name));
+ /* See if we support this algorithm (check only if PKCS are registered) */
+ if (silc_pkcs_list && !silc_pkcs_is_supported(pkcs_name)) {
+ SILC_LOG_DEBUG(("Unknown PKCS %s", pkcs_name));
goto err;
}
goto err;
/* Try to set the key. If this fails the key must be malformed. This
- code assumes that the PKCS routine checks the format of the key. */
- silc_pkcs_alloc(pkcs_name, &alg);
- if (!alg->pkcs->set_public_key(alg->context, key_data, key_len))
- goto err;
- silc_pkcs_free(alg);
+ code assumes that the PKCS routine checks the format of the key.
+ (check only if PKCS are registered) */
+ if (silc_pkcs_list) {
+ silc_pkcs_alloc(pkcs_name, &alg);
+ if (!alg->pkcs->set_public_key(alg->context, key_data, key_len))
+ goto err;
+ silc_pkcs_free(alg);
+ }
if (public_key) {
*public_key = silc_calloc(1, sizeof(**public_key));
if (pkcs_len < 1 || pkcs_len > buf->truelen)
goto err;
- /* See if we support this algorithm */
- if (!silc_pkcs_is_supported(pkcs_name))
+ /* See if we support this algorithm (check only if PKCS are registered). */
+ if (silc_pkcs_list && !silc_pkcs_is_supported(pkcs_name)) {
+ SILC_LOG_DEBUG(("Unknown PKCS `%s'", pkcs_name));
goto err;
+ }
/* Get key data. We assume that rest of the buffer is key data. */
silc_buffer_pull(buf, 2 + pkcs_len);
goto err;
/* Try to set the key. If this fails the key must be malformed. This
- code assumes that the PKCS routine checks the format of the key. */
- silc_pkcs_alloc(pkcs_name, &alg);
- if (!alg->pkcs->set_private_key(alg->context, key_data, key_len))
- goto err;
- silc_pkcs_free(alg);
+ code assumes that the PKCS routine checks the format of the key.
+ (check only if PKCS are registered) */
+ if (silc_pkcs_list) {
+ silc_pkcs_alloc(pkcs_name, &alg);
+ if (!alg->pkcs->set_private_key(alg->context, key_data, key_len))
+ goto err;
+ silc_pkcs_free(alg);
+ }
if (private_key) {
*private_key = silc_calloc(1, sizeof(**private_key));
projects / silc.git / blobdiff