static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa)
{
int v_len, d_len;
int to_return = 0;
int fd;
BIGNUM v, *pv = &v;
BN_init(&v);
if (!bn_wexpand(pv, dsa->p->top)) {
UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
v_len = BN_num_bits(dsa->p);
d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
const DSA_METHOD *meth;
fd = 0;
UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_UNIT_FAILURE);
meth = DSA_OpenSSL();
to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
goto err;
}
if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
(unsigned char *)dgst, d_len,
(unsigned char *)dsa->p->d,
BN_num_bits(dsa->p),
(unsigned char *)dsa->q->d,
BN_num_bits(dsa->q),
(unsigned char *)dsa->g->d,
BN_num_bits(dsa->g),
(unsigned char *)dsa->pub_key->d,
BN_num_bits(dsa->pub_key),
(unsigned char *)sig->r->d,
BN_num_bits(sig->r),
(unsigned char *)sig->s->d,
BN_num_bits(sig->s), (unsigned char *)v.d,
&v_len) != 0) {
const DSA_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
meth = DSA_OpenSSL();
to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
goto err;
}
p_UBSEC_ubsec_close(fd);
to_return = 1;
err:
BN_clear_free(&v);
return to_return;
}
static int ubsec_finish(ENGINE *e)
{
free_UBSEC_LIBNAME();
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
return 0;
}
if(!DSO_free(ubsec_dso))
{
UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
return 0;
}
ubsec_dso = NULL;
p_UBSEC_ubsec_bytes_to_bits = NULL;
p_UBSEC_ubsec_bits_to_bytes = NULL;
p_UBSEC_ubsec_open = NULL;
p_UBSEC_ubsec_close = NULL;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = NULL;
p_UBSEC_diffie_hellman_agree_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = NULL;
p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = NULL;
p_UBSEC_dsa_verify_ioctl = NULL;
#endif
p_UBSEC_math_accelerate_ioctl = NULL;
p_UBSEC_rng_ioctl = NULL;
p_UBSEC_max_key_len_ioctl = NULL;
return 1;
}
static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx)
{
int y_len = 0;
int fd;
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
return 0;
}
/* Check if hardware can't handle this argument. */
y_len = BN_num_bits(m);
if (y_len > max_key_len) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
return BN_mod_exp(r, a, p, m, ctx);
}
if(!bn_wexpand(r, m->top))
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
return 0;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_UNIT_FAILURE);
return BN_mod_exp(r, a, p, m, ctx);
}
if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
(unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
return BN_mod_exp(r, a, p, m, ctx);
}
p_UBSEC_ubsec_close(fd);
r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
return 1;
}
static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *q, const BIGNUM *dp,
const BIGNUM *dq, const BIGNUM *qinv,
BN_CTX *ctx)
{
int y_len, fd;
y_len = BN_num_bits(p) + BN_num_bits(q);
/* Check if hardware can't handle this argument. */
if (y_len > max_key_len) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT,
UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
return FAIL_TO_SOFTWARE;
}
if (!bn_wexpand(r, p->top + q->top + 1)) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
return 0;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_UNIT_FAILURE);
return FAIL_TO_SOFTWARE;
}
if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
(unsigned char *)a->d, BN_num_bits(a),
(unsigned char *)qinv->d,
BN_num_bits(qinv),
(unsigned char *)dp->d, BN_num_bits(dp),
(unsigned char *)p->d, BN_num_bits(p),
(unsigned char *)dq->d, BN_num_bits(dq),
(unsigned char *)q->d, BN_num_bits(q),
(unsigned char *)r->d, &y_len) != 0) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
return FAIL_TO_SOFTWARE;
}
p_UBSEC_ubsec_close(fd);
r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1) / BN_BITS2;
return 1;
}
static int ubsec_rand_bytes(unsigned char * buf,
int num)
{
int ret = 0,
fd;
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
{
const RAND_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_UNIT_FAILURE);
num = p_UBSEC_ubsec_bits_to_bytes(num);
meth = RAND_SSLeay();
meth->seed(buf, num);
ret = meth->bytes(buf, num);
goto err;
}
num *= 8; /* bytes to bits */
if (p_UBSEC_rng_ioctl(fd,
UBSEC_RNG_DIRECT,
buf,
&num) != 0)
{
/* Hardware's a no go, failover to software */
const RAND_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
num = p_UBSEC_ubsec_bits_to_bytes(num);
meth = RAND_SSLeay();
meth->seed(buf, num);
ret = meth->bytes(buf, num);
goto err;
}
p_UBSEC_ubsec_close(fd);
ret = 1;
err:
return(ret);
}
static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
{
int initialised = ((ubsec_dso == NULL) ? 0 : 1);
switch (cmd) {
case UBSEC_CMD_SO_PATH:
if (p == NULL) {
UBSECerr(UBSEC_F_UBSEC_CTRL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (initialised) {
UBSECerr(UBSEC_F_UBSEC_CTRL, UBSEC_R_ALREADY_LOADED);
return 0;
}
return set_UBSEC_LIBNAME((const char *)p);
default:
break;
}
UBSECerr(UBSEC_F_UBSEC_CTRL, UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
return 0;
}
static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh)
{
int ret = -1,
k_len,
fd;
k_len = BN_num_bits(dh->p);
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
{
const DH_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_UNIT_FAILURE);
meth = DH_OpenSSL();
ret = meth->compute_key(key, pub_key, dh);
goto err;
}
if (p_UBSEC_diffie_hellman_agree_ioctl(fd,
(unsigned char *)dh->priv_key->d, BN_num_bits(dh->priv_key),
(unsigned char *)pub_key->d, BN_num_bits(pub_key),
(unsigned char *)dh->p->d, BN_num_bits(dh->p),
key, &k_len) != 0)
{
/* Hardware's a no go, failover to software */
const DH_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
meth = DH_OpenSSL();
ret = meth->compute_key(key, pub_key, dh);
goto err;
}
p_UBSEC_ubsec_close(fd);
ret = p_UBSEC_ubsec_bits_to_bytes(k_len);
err:
return ret;
}
static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
BN_CTX *ctx)
{
int to_return = 0;
if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
goto err;
}
to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
rsa->dmq1, rsa->iqmp, ctx);
if (to_return == FAIL_TO_SOFTWARE) {
/*
* Do in software as hardware failed.
*/
const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
to_return = (*meth->rsa_mod_exp) (r0, I, rsa, ctx);
}
err:
return to_return;
}
static int ubsec_dh_generate_key(DH *dh)
{
int ret = 0,
random_bits = 0,
pub_key_len = 0,
priv_key_len = 0,
fd;
BIGNUM *pub_key = NULL;
BIGNUM *priv_key = NULL;
/*
* How many bits should Random x be? dh_key.c
* sets the range from 0 to num_bits(modulus) ???
*/
if (dh->priv_key == NULL)
{
priv_key = BN_new();
if (priv_key == NULL) goto err;
priv_key_len = BN_num_bits(dh->p);
if(bn_wexpand(priv_key, dh->p->top) == NULL) goto err;
do
if (!BN_rand_range(priv_key, dh->p)) goto err;
while (BN_is_zero(priv_key));
random_bits = BN_num_bits(priv_key);
}
else
{
priv_key = dh->priv_key;
}
if (dh->pub_key == NULL)
{
pub_key = BN_new();
pub_key_len = BN_num_bits(dh->p);
if(bn_wexpand(pub_key, dh->p->top) == NULL) goto err;
if(pub_key == NULL) goto err;
}
else
{
pub_key = dh->pub_key;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
{
const DH_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_UNIT_FAILURE);
meth = DH_OpenSSL();
ret = meth->generate_key(dh);
goto err;
}
if (p_UBSEC_diffie_hellman_generate_ioctl(fd,
(unsigned char *)priv_key->d, &priv_key_len,
(unsigned char *)pub_key->d, &pub_key_len,
(unsigned char *)dh->g->d, BN_num_bits(dh->g),
(unsigned char *)dh->p->d, BN_num_bits(dh->p),
0, 0, random_bits) != 0)
{
/* Hardware's a no go, failover to software */
const DH_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
meth = DH_OpenSSL();
ret = meth->generate_key(dh);
goto err;
}
p_UBSEC_ubsec_close(fd);
dh->pub_key = pub_key;
dh->pub_key->top = (pub_key_len + BN_BITS2-1) / BN_BITS2;
dh->priv_key = priv_key;
dh->priv_key->top = (priv_key_len + BN_BITS2-1) / BN_BITS2;
ret = 1;
err:
return ret;
}
static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
{
DSA_SIG *to_return = NULL;
int s_len = 160, r_len = 160, d_len, fd;
BIGNUM m, *r=NULL, *s=NULL;
BN_init(&m);
s = BN_new();
r = BN_new();
if ((s == NULL) || (r==NULL))
goto err;
d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
(!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
if (BN_bin2bn(dgst,dlen,&m) == NULL) {
UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
const DSA_METHOD *meth;
fd = 0;
UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_UNIT_FAILURE);
meth = DSA_OpenSSL();
to_return = meth->dsa_do_sign(dgst, dlen, dsa);
goto err;
}
if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
(unsigned char *)dgst, d_len,
NULL, 0, /* compute random value */
(unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
(unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
(unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
(unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
(unsigned char *)r->d, &r_len,
(unsigned char *)s->d, &s_len ) != 0) {
const DSA_METHOD *meth;
UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_REQUEST_FAILED);
p_UBSEC_ubsec_close(fd);
meth = DSA_OpenSSL();
to_return = meth->dsa_do_sign(dgst, dlen, dsa);
goto err;
}
p_UBSEC_ubsec_close(fd);
r->top = (160+BN_BITS2-1)/BN_BITS2;
s->top = (160+BN_BITS2-1)/BN_BITS2;
to_return = DSA_SIG_new();
if(to_return == NULL) {
UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
to_return->r = r;
to_return->s = s;
err:
if (!to_return) {
if (r) BN_free(r);
if (s) BN_free(s);
}
BN_clear_free(&m);
return to_return;
}
/* (de)initialisation functions. */
static int ubsec_init(ENGINE *e)
{
t_UBSEC_ubsec_bytes_to_bits *p1;
t_UBSEC_ubsec_bits_to_bytes *p2;
t_UBSEC_ubsec_open *p3;
t_UBSEC_ubsec_close *p4;
#ifndef OPENSSL_NO_DH
t_UBSEC_diffie_hellman_generate_ioctl *p5;
t_UBSEC_diffie_hellman_agree_ioctl *p6;
#endif
/* #ifndef OPENSSL_NO_RSA */
t_UBSEC_rsa_mod_exp_ioctl *p7;
t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
/* #endif */
#ifndef OPENSSL_NO_DSA
t_UBSEC_dsa_sign_ioctl *p9;
t_UBSEC_dsa_verify_ioctl *p10;
#endif
t_UBSEC_math_accelerate_ioctl *p11;
t_UBSEC_rng_ioctl *p12;
t_UBSEC_max_key_len_ioctl *p13;
int fd = 0;
if(ubsec_dso != NULL)
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
goto err;
}
/*
* Attempt to load libubsec.so/ubsec.dll/whatever.
*/
ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0);
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
goto err;
}
if (
!(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
!(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
!(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
!(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
#ifndef OPENSSL_NO_DH
!(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
!(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
#endif
/* #ifndef OPENSSL_NO_RSA */
!(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
!(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
/* #endif */
#ifndef OPENSSL_NO_DSA
!(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
!(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
#endif
!(p11 = (t_UBSEC_math_accelerate_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
!(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)) ||
!(p13 = (t_UBSEC_max_key_len_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F13)))
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
goto err;
}
/* Copy the pointers */
p_UBSEC_ubsec_bytes_to_bits = p1;
p_UBSEC_ubsec_bits_to_bytes = p2;
p_UBSEC_ubsec_open = p3;
p_UBSEC_ubsec_close = p4;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = p5;
p_UBSEC_diffie_hellman_agree_ioctl = p6;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = p7;
p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = p9;
p_UBSEC_dsa_verify_ioctl = p10;
#endif
p_UBSEC_math_accelerate_ioctl = p11;
p_UBSEC_rng_ioctl = p12;
p_UBSEC_max_key_len_ioctl = p13;
/* Perform an open to see if there's actually any unit running. */
if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0) && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0))
{
p_UBSEC_ubsec_close(fd);
return 1;
}
else
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
}
err:
if(ubsec_dso)
DSO_free(ubsec_dso);
ubsec_dso = NULL;
p_UBSEC_ubsec_bytes_to_bits = NULL;
p_UBSEC_ubsec_bits_to_bytes = NULL;
p_UBSEC_ubsec_open = NULL;
p_UBSEC_ubsec_close = NULL;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = NULL;
p_UBSEC_diffie_hellman_agree_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = NULL;
p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = NULL;
p_UBSEC_dsa_verify_ioctl = NULL;
#endif
p_UBSEC_math_accelerate_ioctl = NULL;
p_UBSEC_rng_ioctl = NULL;
p_UBSEC_max_key_len_ioctl = NULL;
return 0;
}
