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Add m_mp_alloc_init_multi() helper

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--HG--
branch : ecc
This commit is contained in:
Matt Johnston 2013-05-23 22:18:16 +08:00
parent 51b5cdd430
commit d9e790e7dc
8 changed files with 29 additions and 38 deletions
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16
bignum.c
View File

@ -52,6 +52,22 @@ void m_mp_init_multi(mp_int *mp, ...)
va_end(args);
}
void m_mp_alloc_init_multi(mp_int **mp, ...)
{
mp_int** cur_arg = mp;
va_list args;
va_start(args, mp); /* init args to next argument from caller */
while (cur_arg != NULL) {
*cur_arg = m_malloc(sizeof(mp_int));
if (mp_init(*cur_arg) != MP_OKAY) {
dropbear_exit("Mem alloc error");
}
cur_arg = va_arg(args, mp_int**);
}
va_end(args);
}
void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len) {
if (mp_read_unsigned_bin(mp, (unsigned char*)bytes, len) != MP_OKAY) {

1
bignum.h
View File

@ -30,6 +30,7 @@
void m_mp_init(mp_int *mp);
void m_mp_init_multi(mp_int *mp, ...) ATTRIB_SENTINEL;
void m_mp_alloc_init_multi(mp_int **mp, ...) ATTRIB_SENTINEL;
void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len);
void hash_process_mp(const struct ltc_hash_descriptor *hash_desc,
hash_state *hs, mp_int *mp);

3
common-kex.c
View File

@ -633,8 +633,7 @@ void kexdh_comb_key(struct kex_dh_param *param, mp_int *dh_pub_them,
}
/* K = e^y mod p = f^x mod p */
ses.dh_K = (mp_int*)m_malloc(sizeof(mp_int));
m_mp_init(ses.dh_K);
m_mp_alloc_init_multi(&ses.dh_K, NULL);
if (mp_exptmod(dh_pub_them, &param->priv, &dh_p, ses.dh_K) != MP_OKAY) {
dropbear_exit("Diffie-Hellman error");
}

9
dss.c
View File

@ -47,11 +47,7 @@ int buf_get_dss_pub_key(buffer* buf, dropbear_dss_key *key) {
TRACE(("enter buf_get_dss_pub_key"))
dropbear_assert(key != NULL);
key->p = m_malloc(sizeof(mp_int));
key->q = m_malloc(sizeof(mp_int));
key->g = m_malloc(sizeof(mp_int));
key->y = m_malloc(sizeof(mp_int));
m_mp_init_multi(key->p, key->q, key->g, key->y, NULL);
m_mp_alloc_init_multi(&key->p, &key->q, &key->g, &key->y, NULL);
key->x = NULL;
buf_incrpos(buf, 4+SSH_SIGNKEY_DSS_LEN); /* int + "ssh-dss" */
@ -87,8 +83,7 @@ int buf_get_dss_priv_key(buffer* buf, dropbear_dss_key *key) {
return DROPBEAR_FAILURE;
}
key->x = m_malloc(sizeof(mp_int));
m_mp_init(key->x);
m_mp_alloc_init_multi(&key->x, NULL);
ret = buf_getmpint(buf, key->x);
if (ret == DROPBEAR_FAILURE) {
m_free(key->x);

9
ecc.c
View File

@ -72,11 +72,8 @@ struct dropbear_ecc_curve* curve_for_dp(const ltc_ecc_set_type *dp) {
ecc_key * new_ecc_key(void) {
ecc_key *key = m_malloc(sizeof(*key));
key->pubkey.x = m_malloc(sizeof(mp_int));
key->pubkey.y = m_malloc(sizeof(mp_int));
key->pubkey.z = m_malloc(sizeof(mp_int));
key->k = m_malloc(sizeof(mp_int));
m_mp_init_multi(key->pubkey.x, key->pubkey.y, key->pubkey.z, key->k, NULL);
m_mp_alloc_init_multi(&key->pubkey.x, &key->pubkey.y,
&key->pubkey.z, &key->k, NULL);
return key;
}
@ -92,7 +89,7 @@ static int ecc_is_point(ecc_key *key)
t1 = m_malloc(sizeof(mp_int));
t2 = m_malloc(sizeof(mp_int));
m_mp_init_multi(prime, b, t1, t2, NULL);
m_mp_alloc_init_multi(&prime, &b, &t1, &t2, NULL);
/* load prime and b */
if ((err = mp_read_radix(prime, key->dp->prime, 16)) != CRYPT_OK) { goto error; }

7
gendss.c
View File

@ -53,12 +53,7 @@ dropbear_dss_key * gen_dss_priv_key(unsigned int size) {
key = m_malloc(sizeof(*key));
key->p = (mp_int*)m_malloc(sizeof(mp_int));
key->q = (mp_int*)m_malloc(sizeof(mp_int));
key->g = (mp_int*)m_malloc(sizeof(mp_int));
key->y = (mp_int*)m_malloc(sizeof(mp_int));
key->x = (mp_int*)m_malloc(sizeof(mp_int));
m_mp_init_multi(key->p, key->q, key->g, key->y, key->x, NULL);
m_mp_alloc_init_multi(&key->p, &key->q, &key->g, &key->y, &key->x, NULL);
getq(key);
getp(key, size/8);

11
genrsa.c
View File

@ -50,15 +50,8 @@ dropbear_rsa_key * gen_rsa_priv_key(unsigned int size) {
}
key = m_malloc(sizeof(*key));
key->e = (mp_int*)m_malloc(sizeof(mp_int));
key->n = (mp_int*)m_malloc(sizeof(mp_int));
key->d = (mp_int*)m_malloc(sizeof(mp_int));
key->p = (mp_int*)m_malloc(sizeof(mp_int));
key->q = (mp_int*)m_malloc(sizeof(mp_int));
m_mp_init_multi(key->e, key->n, key->d, key->p, key->q,
&pminus, &lcm, &qminus, NULL);
m_mp_alloc_init_multi(&key->e, &key->n, &key->d, &key->p, &key->q, NULL);
m_mp_init_multi(&pminus, &lcm, &qminus, NULL);
if (mp_set_int(key->e, RSA_E) != MP_OKAY) {
fprintf(stderr, "RSA generation failed\n");

11
rsa.c
View File

@ -50,9 +50,7 @@ int buf_get_rsa_pub_key(buffer* buf, dropbear_rsa_key *key) {
int ret = DROPBEAR_FAILURE;
TRACE(("enter buf_get_rsa_pub_key"))
dropbear_assert(key != NULL);
key->e = m_malloc(sizeof(mp_int));
key->n = m_malloc(sizeof(mp_int));
m_mp_init_multi(key->e, key->n, NULL);
m_mp_alloc_init_multi(&key->e, &key->n, NULL);
key->d = NULL;
key->p = NULL;
key->q = NULL;
@ -98,8 +96,7 @@ int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
key->p = NULL;
key->q = NULL;
key->d = m_malloc(sizeof(mp_int));
m_mp_init(key->d);
m_mp_alloc_init_multi(&key->d);
if (buf_getmpint(buf, key->d) == DROPBEAR_FAILURE) {
TRACE(("leave buf_get_rsa_priv_key: d: ret == DROPBEAR_FAILURE"))
goto out;
@ -108,9 +105,7 @@ int buf_get_rsa_priv_key(buffer* buf, dropbear_rsa_key *key) {
if (buf->pos == buf->len) {
/* old Dropbear private keys didn't keep p and q, so we will ignore them*/
} else {
key->p = m_malloc(sizeof(mp_int));
key->q = m_malloc(sizeof(mp_int));
m_mp_init_multi(key->p, key->q, NULL);
m_mp_alloc_init_multi(&key->p, &key->q, NULL);
if (buf_getmpint(buf, key->p) == DROPBEAR_FAILURE) {
TRACE(("leave buf_get_rsa_priv_key: p: ret == DROPBEAR_FAILURE"))