// Initialize B object by placing all Raws into one Bi
// Called on B construction
void b_init(B *b) {
unsigned int i, index;
// Destruct existing clusters
for(i=0; i<b->nclust; i++) {
bi_free(b->bi[i]);
}
b->nclust=0;
// Add the one cluster and initialize its "birth" information
b_add_bi(b, bi_new(b->nraw));
strcpy(b->bi[0]->birth_type, "I");
b->bi[0]->birth_pval = 0.0;
b->bi[0]->birth_fold = 1.0;
b->bi[0]->birth_e = b->reads;
b->nalign = 0;
b->nshroud = 0;
// Add all raws to that cluster
for (index=0; index<b->nraw; index++) {
bi_add_raw(b->bi[0], b->raw[index]);
}
bi_census(b->bi[0]);
bi_assign_center(b->bi[0]); // Makes cluster center sequence
}
/* from DAAUtil */
bi_ptr project_into_group_gamma( bi_ptr base, TSS_DAA_PK_internal *issuer_pk) {
bi_t exponent; bi_new( exponent);
bi_ptr capital_gamma = issuer_pk->capitalGamma;
bi_ptr rho = issuer_pk->rho;
bi_ptr zeta = bi_new_ptr();
if( capital_gamma == NULL ||
rho == NULL ||
zeta == NULL) return NULL;
// exponent = capital_gamma - 1
bi_sub( exponent, capital_gamma, bi_1);
// exponent = exponent / rho
bi_div( exponent, exponent, rho);
// zeta = ( base ^ exponent) % capital_gamma
LogDebug("project_into_group_gamma: rho [%ld]:%s",
bi_nbin_size( rho), bi_2_hex_char( rho));
LogDebug("project_into_group_gamma: base[%ld]:%s",
bi_nbin_size( base), bi_2_hex_char( base));
LogDebug("project_into_group_gamma: exponent [%ld]:%s",
bi_nbin_size( exponent), bi_2_hex_char( exponent));
LogDebug("project_into_group_gamma: capitalGamma[%ld]:%s",
bi_nbin_size( capital_gamma),
bi_2_hex_char( capital_gamma));
bi_mod_exp( zeta, base, exponent, capital_gamma);
LogDebug("project_into_group_gamma: result:%s", bi_2_hex_char( zeta));
bi_free( exponent);
return zeta;
}
inline bi_ptr apply_challenge( bi_ptr value, bi_ptr delta, bi_ptr c, bi_ptr capital_gamma) {
bi_ptr delta_tilde = bi_new_ptr();
bi_t c_negate;
if( delta_tilde == NULL) return NULL;
bi_new( c_negate);
bi_set( c_negate, c);
bi_negate( c_negate);
// delta_tilde = ( delta ^ (-c)) % capital_gamma
bi_mod_exp( delta_tilde, delta, c_negate, capital_gamma);
bi_free( c_negate);
// delta_tilde = (delta_tilde * value) % capital_gamma
return bi_mod( delta_tilde, bi_mul( delta_tilde, delta_tilde, value), capital_gamma);
}
int bi_insert (BiTree_s *tree, Rec_s r)
{
BiNode_s **np = &tree->root;
for (;;) {
BiNode_s *node = *np;
if (!node) break;
if (cmplump(r.key, node->rec.key) < 0) {
np = &node->left;
} else {
np = &node->right;
}
}
*np = bi_new(r);
return 0;
}
static bool process_block(const struct bp_block *block, int64_t fpos)
{
struct blkinfo *bi = bi_new();
bu256_copy(&bi->hash, &block->sha256);
bp_block_copy_hdr(&bi->hdr, block);
bi->n_file = 0;
bi->n_pos = fpos;
struct blkdb_reorg reorg;
if (!blkdb_add(&db, bi, &reorg)) {
fprintf(plog, "brd: blkdb add fail\n");
goto err_out;
}
/* FIXME: support reorg */
assert(reorg.conn == 1);
assert(reorg.disconn == 0);
/* if best chain, mark TX's as spent */
if (bu256_equal(&db.best_chain->hash, &bi->hdr.sha256)) {
if (!spend_block(&uset, block, bi->height)) {
char hexstr[BU256_STRSZ];
bu256_hex(hexstr, &bi->hdr.sha256);
fprintf(plog,
"brd: block spend fail %u %s\n",
bi->height, hexstr);
/* FIXME: bad record is now in blkdb */
goto err_out;
}
}
return true;
err_out:
bi_free(bi);
return false;
}
static void read_test_msg(struct blkdb *db, struct bp_utxo_set *uset,
const struct p2p_message *msg, int64_t fpos)
{
assert(strncmp(msg->hdr.command, "block",
sizeof(msg->hdr.command)) == 0);
struct bp_block block;
bp_block_init(&block);
struct const_buffer buf = { msg->data, msg->hdr.data_len };
assert(deser_bp_block(&block, &buf) == true);
bp_block_calc_sha256(&block);
assert(bp_block_valid(&block) == true);
struct blkinfo *bi = bi_new();
bu256_copy(&bi->hash, &block.sha256);
bp_block_copy_hdr(&bi->hdr, &block);
bi->n_file = 0;
bi->n_pos = fpos + P2P_HDR_SZ;
assert(blkdb_add(db, bi) == true);
/* if best chain, mark TX's as spent */
if (bu256_equal(&db->hashBestChain, &bi->hdr.sha256)) {
if (!spend_block(uset, &block, bi->height)) {
char hexstr[BU256_STRSZ];
bu256_hex(hexstr, &bi->hdr.sha256);
fprintf(stderr,
"chain-verf: block fail %u %s\n",
bi->height, hexstr);
assert(!"spend_block");
}
}
bp_block_free(&block);
}
static bool blkdb_read_rec(struct blkdb *db, const struct p2p_message *msg)
{
struct blkinfo *bi;
struct const_buffer buf = { msg->data, msg->hdr.data_len };
if (strncmp(msg->hdr.command, "rec", 12))
return false;
bi = bi_new();
if (!bi)
return false;
/* deserialize record */
if (!deser_u256(&bi->hash, &buf))
goto err_out;
if (!deser_bp_block(&bi->hdr, &buf))
goto err_out;
/* verify that provided hash matches block header, as an additional
* self-verification step
*/
bp_block_calc_sha256(&bi->hdr);
if (!bu256_equal(&bi->hash, &bi->hdr.sha256))
goto err_out;
/* verify block may be added to chain, then add it */
struct blkdb_reorg dummy;
if (!blkdb_connect(db, bi, &dummy))
goto err_out;
return true;
err_out:
bi_free(bi);
return false;
}
