static ssh_key *rsa2_new_priv(const ssh_keyalg *self,
ptrlen pub, ptrlen priv)
{
BinarySource src[1];
ssh_key *sshk;
RSAKey *rsa;
sshk = rsa2_new_pub(self, pub);
if (!sshk)
return NULL;
rsa = container_of(sshk, RSAKey, sshk);
BinarySource_BARE_INIT_PL(src, priv);
rsa->private_exponent = get_mp_ssh2(src);
rsa->p = get_mp_ssh2(src);
rsa->q = get_mp_ssh2(src);
rsa->iqmp = get_mp_ssh2(src);
if (get_err(src) || !rsa_verify(rsa)) {
rsa2_freekey(&rsa->sshk);
return NULL;
}
return &rsa->sshk;
}
static int rsa2_pubkey_bits(void *blob, int len)
{
struct RSAKey *rsa;
int ret;
rsa = rsa2_newkey((char *) blob, len);
ret = bignum_bitcount(rsa->modulus);
rsa2_freekey(rsa);
return ret;
}
static int rsa2_pubkey_bits(const ssh_keyalg *self, ptrlen pub)
{
ssh_key *sshk;
RSAKey *rsa;
int ret;
sshk = rsa2_new_pub(self, pub);
if (!sshk)
return -1;
rsa = container_of(sshk, RSAKey, sshk);
ret = mp_get_nbits(rsa->modulus);
rsa2_freekey(&rsa->sshk);
return ret;
}
static void *rsa2_createkey(unsigned char *pub_blob, int pub_len,
unsigned char *priv_blob, int priv_len)
{
struct RSAKey *rsa;
char *pb = (char *) priv_blob;
rsa = rsa2_newkey((char *) pub_blob, pub_len);
rsa->private_exponent = getmp(&pb, &priv_len);
rsa->p = getmp(&pb, &priv_len);
rsa->q = getmp(&pb, &priv_len);
rsa->iqmp = getmp(&pb, &priv_len);
if (!rsa_verify(rsa)) {
rsa2_freekey(rsa);
return NULL;
}
return rsa;
}
static ssh_key *rsa2_new_priv_openssh(const ssh_keyalg *self,
BinarySource *src)
{
RSAKey *rsa;
rsa = snew(RSAKey);
rsa->sshk.vt = &ssh_rsa;
rsa->comment = NULL;
rsa->modulus = get_mp_ssh2(src);
rsa->exponent = get_mp_ssh2(src);
rsa->private_exponent = get_mp_ssh2(src);
rsa->iqmp = get_mp_ssh2(src);
rsa->p = get_mp_ssh2(src);
rsa->q = get_mp_ssh2(src);
if (get_err(src) || !rsa_verify(rsa)) {
rsa2_freekey(&rsa->sshk);
return NULL;
}
return &rsa->sshk;
}
static ssh_key *rsa2_new_pub(const ssh_keyalg *self, ptrlen data)
{
BinarySource src[1];
RSAKey *rsa;
BinarySource_BARE_INIT_PL(src, data);
if (!ptrlen_eq_string(get_string(src), "ssh-rsa"))
return NULL;
rsa = snew(RSAKey);
rsa->sshk.vt = &ssh_rsa;
rsa->exponent = get_mp_ssh2(src);
rsa->modulus = get_mp_ssh2(src);
rsa->private_exponent = NULL;
rsa->p = rsa->q = rsa->iqmp = NULL;
rsa->comment = NULL;
if (get_err(src)) {
rsa2_freekey(&rsa->sshk);
return NULL;
}
return &rsa->sshk;
}
void ssh_rsakex_freekey(RSAKey *key)
{
rsa2_freekey(&key->sshk);
}