int JPAKE_STEP2_process(JPAKE_CTX *ctx, const JPAKE_STEP2 *received)
{
BIGNUM *t1 = BN_new();
BIGNUM *t2 = BN_new();
int ret = 0;
/*
* g' = g^{xc + xa + xb} [from our POV]
* t1 = xa + xb
*/
BN_mod_add(t1, ctx->xa, ctx->xb, ctx->p.q, ctx->ctx);
/* t2 = g^{t1} = g^{xa+xb} */
BN_mod_exp(t2, ctx->p.g, t1, ctx->p.p, ctx->ctx);
/* t1 = g^{xc} * t2 = g^{xc + xa + xb} */
BN_mod_mul(t1, ctx->p.gxc, t2, ctx->p.p, ctx->ctx);
if(verify_zkp(received, t1, ctx))
ret = 1;
else
JPAKEerr(JPAKE_F_JPAKE_STEP2_PROCESS, JPAKE_R_VERIFY_B_FAILED);
compute_key(ctx, received->gx);
/* cleanup */
BN_free(t2);
BN_free(t1);
return ret;
}
inline buffer dh_key::compute_key(bn::bignum pub_key) const
{
buffer result(size());
result.data().resize(compute_key(buffer_cast<uint8_t*>(result), buffer_size(result), pub_key.raw()));
return result;
}
/**
* Generate an event id with specified type.
*
* @param seed1 Seed1.
* @param seed2 Seed2, this parameter will be ignored if the value is NULL.
* @param type The type of key. The length of generated id will be 20
* characters if type is KEY_SHORT; 32 characters if type is
* KEY_LONG.
*
* @return a pointer to result haskkey if successful, or NULL if not.
*/
char *generate_event_id(const char *seed1, size_t slen1, const char *seed2,
size_t slen2, enum key_type type)
{
int ret;
char *buf;
char *key;
size_t klen;
if (!seed1 || !slen1)
return NULL;
if (type == KEY_SHORT)
klen = SHORT_KEY_LENGTH;
else if (type == KEY_LONG)
klen = LONG_KEY_LENGTH;
else
return NULL;
key = (char *)malloc(klen + 1);
if (!key) {
LOGE("failed to generate event id, out of memory\n");
return NULL;
}
if (seed2) {
if (asprintf(&buf, "%s%s", seed1, seed2) == -1) {
LOGE("failed to generate event id, out of memory\n");
free(key);
return NULL;
}
ret = compute_key(key, klen, (const char *)buf, slen1 + slen2);
free(buf);
} else {
ret = compute_key(key, klen, seed1, slen1);
}
if (ret < 0) {
LOGE("compute_key error\n");
free(key);
key = NULL;
}
return key;
}
void IpAddress::set_from_string(char *sym_addr) {
if(strchr(sym_addr, '.')) {
addr.ipVersion = 4, addr.localHost = 0, addr.ipType.ipv4 = inet_addr(sym_addr);
} else {
if(inet_pton(AF_INET6, sym_addr, &addr.ipType.ipv6) <= 0) {
/* We failed */
addr.ipVersion = 4, addr.localHost = 0, addr.ipType.ipv4 = 0;
} else {
addr.ipVersion = 6, addr.localHost = 0;
}
}
compute_key();
}
void IpAddress::set(IpAddress *ip) {
memcpy(&addr, &ip->addr, sizeof(struct ipAddress));
ip_key = ip->ip_key;
compute_key();
}
IpAddress::IpAddress(struct ndpi_in6_addr *_ipv6) {
ip_key = 0;
set_ipv6(_ipv6);
addr.privateIP = false;
compute_key();
}
IpAddress::IpAddress(u_int32_t _ipv4) {
ip_key = 0;
set_ipv4(_ipv4);
compute_key();
}
IpAddress::IpAddress(char *string) {
ip_key = 0;
set_from_string(string);
compute_key();
}
IpAddress::IpAddress() {
ip_key = 0;
memset(&addr, 0, sizeof(addr));
compute_key();
}
bool EDPSimpleSUBListener::computeKey(CacheChange_t* change)
{
CDRMessage_t aux_msg;
return compute_key(&aux_msg,change);
}