static int rpmcdsaAvailablePubkey(pgpDig dig, int algo)
{
int rc = 0; /* assume available */
#ifdef REFERENCE
rc = rpmgcAvailable(dig->impl, algo, gcry_pk_test_algo(algo));
#endif
return rc;
}
/* This function recognizes the KSP content.
* This function sets the KMO error string. It returns -1 on failure.
*/
int kmocrypt_recognize_ksp2(struct kmocrypt_signature2 *self, kbuffer *buffer) {
uint32_t header_len = 27;
uint32_t subpackets_len;
if (buffer->len < header_len) {
kmo_seterror("KSP header too short");
return -1;
}
/* MAGIC */
kbuffer_read32(buffer);
/* MAJOR */
self->major= kbuffer_read32(buffer);
/* MINOR */
self->minor = kbuffer_read32(buffer);
/* MEMBER ID */
self->mid = kbuffer_read64(buffer);
/* HASH ALGO */
self->hash_algo = kbuffer_read8(buffer);
if (gcry_md_test_algo(self->hash_algo)) {
kmo_seterror("unsupported hash algorithm");
return -1;
}
/* SIG ALGO */
self->sig_algo = kbuffer_read8(buffer);
if (gcry_pk_test_algo(self->sig_algo)) {
kmo_seterror("unsupported signature algorithm");
return -1;
}
/* PACKAGING TYPE */
self->pkg_type = kbuffer_read8(buffer);
if (self->pkg_type >= KMO_P_NB_TYPE) {
kmo_seterror("invalid signature packet type");
return -1;
}
/* SUBPACKETS LENGTH */
subpackets_len = kbuffer_read32(buffer);
if (! subpackets_len) {
kmo_seterror("no subpacket in KSP");
return -1;
}
if (buffer->len < header_len + subpackets_len) {
kmo_seterror("KSP subpacket section is too short");
return -1;
}
/* Recognize the subpackets. */
if (recognize_subpackets(self, buffer, subpackets_len)) {
return -1;
}
/* Recognize the signature of the KSP, unless it's the encryption key. */
if (self->mid && recognize_ksp_signature(self, buffer, buffer->len - buffer->pos)) {
return -1;
}
return 0;
}
