/* (de)initialisation functions. */
static int cswift_init(ENGINE *e)
{
SW_CONTEXT_HANDLE hac;
t_swAcquireAccContext *p1;
t_swAttachKeyParam *p2;
t_swSimpleRequest *p3;
t_swReleaseAccContext *p4;
if(cswift_dso != NULL)
{
CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_ALREADY_LOADED);
goto err;
}
/* Attempt to load libswift.so/swift.dll/whatever. */
cswift_dso = DSO_load(NULL, get_CSWIFT_LIBNAME(), NULL, 0);
if(cswift_dso == NULL)
{
CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
goto err;
}
if(!(p1 = (t_swAcquireAccContext *)
DSO_bind_func(cswift_dso, CSWIFT_F1)) ||
!(p2 = (t_swAttachKeyParam *)
DSO_bind_func(cswift_dso, CSWIFT_F2)) ||
!(p3 = (t_swSimpleRequest *)
DSO_bind_func(cswift_dso, CSWIFT_F3)) ||
!(p4 = (t_swReleaseAccContext *)
DSO_bind_func(cswift_dso, CSWIFT_F4)))
{
CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
goto err;
}
/* Copy the pointers */
p_CSwift_AcquireAccContext = p1;
p_CSwift_AttachKeyParam = p2;
p_CSwift_SimpleRequest = p3;
p_CSwift_ReleaseAccContext = p4;
/* Try and get a context - if not, we may have a DSO but no
* accelerator! */
if(!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_UNIT_FAILURE);
goto err;
}
release_context(hac);
/* Everything's fine. */
return 1;
err:
if(cswift_dso)
{
DSO_free(cswift_dso);
cswift_dso = NULL;
}
p_CSwift_AcquireAccContext = NULL;
p_CSwift_AttachKeyParam = NULL;
p_CSwift_SimpleRequest = NULL;
p_CSwift_ReleaseAccContext = NULL;
return 0;
}
static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
{
int to_return = 0;
const RSA_METHOD * def_rsa_method;
/* Try the limits of RSA (2048 bits) */
if(BN_num_bytes(rsa->p) > 128 ||
BN_num_bytes(rsa->q) > 128 ||
BN_num_bytes(rsa->dmp1) > 128 ||
BN_num_bytes(rsa->dmq1) > 128 ||
BN_num_bytes(rsa->iqmp) > 128)
{
#ifdef RSA_NULL
def_rsa_method=RSA_null_method();
#else
#if 0
def_rsa_method=RSA_PKCS1_RSAref();
#else
def_rsa_method=RSA_PKCS1_SSLeay();
#endif
#endif
if(def_rsa_method)
return def_rsa_method->rsa_mod_exp(r0, I, rsa, ctx);
}
if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
{
CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP,CSWIFT_R_MISSING_KEY_COMPONENTS);
goto err;
}
to_return = cswift_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
rsa->dmq1, rsa->iqmp, ctx);
err:
return to_return;
}
static int cswift_finish(ENGINE *e)
{
free_CSWIFT_LIBNAME();
if (cswift_dso == NULL) {
CSWIFTerr(CSWIFT_F_CSWIFT_FINISH, CSWIFT_R_NOT_LOADED);
return 0;
}
if (!DSO_free(cswift_dso)) {
CSWIFTerr(CSWIFT_F_CSWIFT_FINISH, CSWIFT_R_UNIT_FAILURE);
return 0;
}
cswift_dso = NULL;
p_CSwift_AcquireAccContext = NULL;
p_CSwift_AttachKeyParam = NULL;
p_CSwift_SimpleRequest = NULL;
p_CSwift_ReleaseAccContext = NULL;
return 1;
}
static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
{
int initialised = ((cswift_dso == NULL) ? 0 : 1);
switch (cmd) {
case CSWIFT_CMD_SO_PATH:
if (p == NULL) {
CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (initialised) {
CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_ALREADY_LOADED);
return 0;
}
return set_CSWIFT_LIBNAME((const char *)p);
default:
break;
}
CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED);
return 0;
}
static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa)
{
SW_CONTEXT_HANDLE hac;
SW_PARAM sw_param;
SW_STATUS sw_status;
SW_LARGENUMBER arg[2], res;
unsigned long sig_result;
BN_CTX *ctx;
BIGNUM *dsa_p = NULL;
BIGNUM *dsa_q = NULL;
BIGNUM *dsa_g = NULL;
BIGNUM *dsa_key = NULL;
BIGNUM *argument = NULL;
int to_return = -1;
int acquired = 0;
if((ctx = BN_CTX_new()) == NULL)
goto err;
if(!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_UNIT_FAILURE);
goto err;
}
acquired = 1;
/* Prepare the params */
BN_CTX_start(ctx);
dsa_p = BN_CTX_get(ctx);
dsa_q = BN_CTX_get(ctx);
dsa_g = BN_CTX_get(ctx);
dsa_key = BN_CTX_get(ctx);
argument = BN_CTX_get(ctx);
if(!argument)
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_CTX_FULL);
goto err;
}
if(!bn_wexpand(dsa_p, dsa->p->top) ||
!bn_wexpand(dsa_q, dsa->q->top) ||
!bn_wexpand(dsa_g, dsa->g->top) ||
!bn_wexpand(dsa_key, dsa->pub_key->top) ||
!bn_wexpand(argument, 40))
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
sw_param.type = SW_ALG_DSA;
sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
(unsigned char *)dsa_p->d);
sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
(unsigned char *)dsa_q->d);
sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
(unsigned char *)dsa_g->d);
sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->pub_key,
(unsigned char *)dsa_key->d);
sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
/* Attach the key params */
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BAD_KEY_SIZE);
goto err;
default:
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
}
goto err;
}
/* Prepare the argument and response */
arg[0].nbytes = dgst_len;
arg[0].value = (unsigned char *)dgst;
arg[1].nbytes = 40;
arg[1].value = (unsigned char *)argument->d;
memset(arg[1].value, 0, 40);
BN_bn2bin(sig->r, arg[1].value + 20 - BN_num_bytes(sig->r));
BN_bn2bin(sig->s, arg[1].value + 40 - BN_num_bytes(sig->s));
res.nbytes = 4; /* unsigned long */
res.value = (unsigned char *)(&sig_result);
/* Perform the operation */
sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_VERIFY, arg, 2,
&res, 1);
if(sw_status != SW_OK)
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
goto err;
}
/* Convert the response */
to_return = ((sig_result == 0) ? 0 : 1);
err:
if(acquired)
release_context(hac);
if(ctx)
{
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
return to_return;
}
static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
{
SW_CONTEXT_HANDLE hac;
SW_PARAM sw_param;
SW_STATUS sw_status;
SW_LARGENUMBER arg, res;
unsigned char *ptr;
BN_CTX *ctx;
BIGNUM *dsa_p = NULL;
BIGNUM *dsa_q = NULL;
BIGNUM *dsa_g = NULL;
BIGNUM *dsa_key = NULL;
BIGNUM *result = NULL;
DSA_SIG *to_return = NULL;
int acquired = 0;
if((ctx = BN_CTX_new()) == NULL)
goto err;
if(!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_UNIT_FAILURE);
goto err;
}
acquired = 1;
/* Prepare the params */
BN_CTX_start(ctx);
dsa_p = BN_CTX_get(ctx);
dsa_q = BN_CTX_get(ctx);
dsa_g = BN_CTX_get(ctx);
dsa_key = BN_CTX_get(ctx);
result = BN_CTX_get(ctx);
if(!result)
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_CTX_FULL);
goto err;
}
if(!bn_wexpand(dsa_p, dsa->p->top) ||
!bn_wexpand(dsa_q, dsa->q->top) ||
!bn_wexpand(dsa_g, dsa->g->top) ||
!bn_wexpand(dsa_key, dsa->priv_key->top) ||
!bn_wexpand(result, dsa->p->top))
{
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
sw_param.type = SW_ALG_DSA;
sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
(unsigned char *)dsa_p->d);
sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
(unsigned char *)dsa_q->d);
sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
(unsigned char *)dsa_g->d);
sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->priv_key,
(unsigned char *)dsa_key->d);
sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
/* Attach the key params */
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BAD_KEY_SIZE);
goto err;
default:
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
}
goto err;
}
/* Prepare the argument and response */
arg.nbytes = dlen;
arg.value = (unsigned char *)dgst;
res.nbytes = BN_num_bytes(dsa->p);
memset(result->d, 0, res.nbytes);
res.value = (unsigned char *)result->d;
/* Perform the operation */
sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_SIGN, &arg, 1,
&res, 1);
if(sw_status != SW_OK)
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
goto err;
}
/* Convert the response */
ptr = (unsigned char *)result->d;
if((to_return = DSA_SIG_new()) == NULL)
goto err;
to_return->r = BN_bin2bn((unsigned char *)result->d, 20, NULL);
to_return->s = BN_bin2bn((unsigned char *)result->d + 20, 20, NULL);
err:
if(acquired)
release_context(hac);
if(ctx)
{
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
return to_return;
}
/* Un petit mod_exp chinois */
static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *q, const BIGNUM *dmp1,
const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx)
{
SW_STATUS sw_status;
SW_LARGENUMBER arg, res;
SW_PARAM sw_param;
SW_CONTEXT_HANDLE hac;
BIGNUM *result = NULL;
BIGNUM *argument = NULL;
int to_return = 0; /* expect failure */
int acquired = 0;
sw_param.up.crt.p.value = NULL;
sw_param.up.crt.q.value = NULL;
sw_param.up.crt.dmp1.value = NULL;
sw_param.up.crt.dmq1.value = NULL;
sw_param.up.crt.iqmp.value = NULL;
if(!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_UNIT_FAILURE);
goto err;
}
acquired = 1;
/* Prepare the params */
argument = BN_new();
result = BN_new();
if(!result || !argument)
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_CTX_FULL);
goto err;
}
sw_param.type = SW_ALG_CRT;
/************************************************************************/
/* 04/02/2003 */
/* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
/* limitation of cswift with values not a multiple of 32 */
/************************************************************************/
if(!cswift_bn_32copy(&sw_param.up.crt.p, p))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
if(!cswift_bn_32copy(&sw_param.up.crt.q, q))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
if(!cswift_bn_32copy(&sw_param.up.crt.dmp1, dmp1))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
if(!cswift_bn_32copy(&sw_param.up.crt.dmq1, dmq1))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
if(!cswift_bn_32copy(&sw_param.up.crt.iqmp, iqmp))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
if( !bn_wexpand(argument, a->top) ||
!bn_wexpand(result, p->top + q->top))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
/* Attach the key params */
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BAD_KEY_SIZE);
goto err;
default:
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
}
goto err;
}
/* Prepare the argument and response */
arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
arg.value = (unsigned char *)argument->d;
res.nbytes = 2 * BN_num_bytes(p);
memset(result->d, 0, res.nbytes);
res.value = (unsigned char *)result->d;
/* Perform the operation */
if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP_CRT, &arg, 1,
&res, 1)) != SW_OK)
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
goto err;
}
/* Convert the response */
BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
to_return = 1;
err:
if(sw_param.up.crt.p.value)
OPENSSL_free(sw_param.up.crt.p.value);
if(sw_param.up.crt.q.value)
OPENSSL_free(sw_param.up.crt.q.value);
if(sw_param.up.crt.dmp1.value)
OPENSSL_free(sw_param.up.crt.dmp1.value);
if(sw_param.up.crt.dmq1.value)
OPENSSL_free(sw_param.up.crt.dmq1.value);
if(sw_param.up.crt.iqmp.value)
OPENSSL_free(sw_param.up.crt.iqmp.value);
if(result)
BN_free(result);
if(argument)
BN_free(argument);
if(acquired)
release_context(hac);
return to_return;
}
/* Un petit mod_exp */
static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx)
{
/* I need somewhere to store temporary serialised values for
* use with the CryptoSwift API calls. A neat cheat - I'll use
* BIGNUMs from the BN_CTX but access their arrays directly as
* byte arrays <grin>. This way I don't have to clean anything
* up. */
BIGNUM *modulus;
BIGNUM *exponent;
BIGNUM *argument;
BIGNUM *result;
SW_STATUS sw_status;
SW_LARGENUMBER arg, res;
SW_PARAM sw_param;
SW_CONTEXT_HANDLE hac;
int to_return, acquired;
modulus = exponent = argument = result = NULL;
to_return = 0; /* expect failure */
acquired = 0;
if(!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_UNIT_FAILURE);
goto err;
}
acquired = 1;
/* Prepare the params */
BN_CTX_start(ctx);
modulus = BN_CTX_get(ctx);
exponent = BN_CTX_get(ctx);
argument = BN_CTX_get(ctx);
result = BN_CTX_get(ctx);
if(!result)
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_CTX_FULL);
goto err;
}
if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, p->top) ||
!bn_wexpand(argument, a->top) || !bn_wexpand(result, m->top))
{
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_EXPAND_FAIL);
goto err;
}
sw_param.type = SW_ALG_EXP;
sw_param.up.exp.modulus.nbytes = BN_bn2bin(m,
(unsigned char *)modulus->d);
sw_param.up.exp.modulus.value = (unsigned char *)modulus->d;
sw_param.up.exp.exponent.nbytes = BN_bn2bin(p,
(unsigned char *)exponent->d);
sw_param.up.exp.exponent.value = (unsigned char *)exponent->d;
/* Attach the key params */
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BAD_KEY_SIZE);
goto err;
default:
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
}
goto err;
}
/* Prepare the argument and response */
arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
arg.value = (unsigned char *)argument->d;
res.nbytes = BN_num_bytes(m);
memset(result->d, 0, res.nbytes);
res.value = (unsigned char *)result->d;
/* Perform the operation */
if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP, &arg, 1,
&res, 1)) != SW_OK)
{
char tmpbuf[DECIMAL_SIZE(sw_status)+1];
CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", sw_status);
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
goto err;
}
/* Convert the response */
BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
to_return = 1;
err:
if(acquired)
release_context(hac);
BN_CTX_end(ctx);
return to_return;
}
/* Random bytes are good */
static int cswift_rand_bytes(unsigned char *buf, int num)
{
SW_CONTEXT_HANDLE hac;
SW_STATUS swrc;
SW_LARGENUMBER largenum;
int acquired = 0;
int to_return = 0; /* assume failure */
unsigned char buf32[1024];
if (!get_context(&hac))
{
CSWIFTerr(CSWIFT_F_CSWIFT_RAND_BYTES, CSWIFT_R_UNIT_FAILURE);
goto err;
}
acquired = 1;
/************************************************************************/
/* 04/02/2003 */
/* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
/* limitation of cswift with values not a multiple of 32 */
/************************************************************************/
while(num >= (int)sizeof(buf32))
{
largenum.value = buf;
largenum.nbytes = sizeof(buf32);
/* tell CryptoSwift how many bytes we want and where we want it.
* Note: - CryptoSwift cannot do more than 4096 bytes at a time.
* - CryptoSwift can only do multiple of 32-bits. */
swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
if (swrc != SW_OK)
{
char tmpbuf[20];
CSWIFTerr(CSWIFT_F_CSWIFT_RAND_BYTES, CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", swrc);
ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
goto err;
}
buf += sizeof(buf32);
num -= sizeof(buf32);
}
if(num)
{
largenum.nbytes = sizeof(buf32);
largenum.value = buf32;
swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
if (swrc != SW_OK)
{
char tmpbuf[20];
CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_REQUEST_FAILED);
sprintf(tmpbuf, "%ld", swrc);
ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
goto err;
}
memcpy(buf, largenum.value, num);
}
to_return = 1; /* success */
err:
if (acquired)
release_context(hac);
return to_return;
}
