/*
* crypto_mac_prov()
*
* Arguments:
* mech: crypto_mechanism_t pointer.
* mech_type is a valid value previously returned by
* crypto_mech2id();
* When the mech's parameter is not NULL, its definition depends
* on the standard definition of the mechanism.
* key: pointer to a crypto_key_t structure.
* data: The message to compute the MAC for.
* mac: Storage for the MAC. The length needed depends on the mechanism.
* tmpl: a crypto_ctx_template_t, opaque template of a context of a
* MAC with the 'mech' using 'key'. 'tmpl' is created by
* a previous call to crypto_create_ctx_template().
* cr: crypto_call_req_t calling conditions and call back info.
*
* Description:
* Asynchronously submits a request for, or synchronously performs a
* single-part message authentication of 'data' with the mechanism
* 'mech', using * the key 'key', on the specified provider with
* the specified session id.
* When complete and successful, 'mac' will contain the message
* authentication code.
*
* Context:
* Process or interrupt, according to the semantics dictated by the 'crq'.
*
* Returns:
* See comment in the beginning of the file.
*/
int
crypto_mac_prov(crypto_provider_t provider, crypto_session_id_t sid,
crypto_mechanism_t *mech, crypto_data_t *data, crypto_key_t *key,
crypto_ctx_template_t tmpl, crypto_data_t *mac, crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider(mech->cm_type,
CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
&real_provider, CRYPTO_FG_MAC_ATOMIC);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, sid, mech, key,
data, mac, tmpl);
rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE);
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
/*
* See comments for crypto_digest_update().
*/
int
crypto_sign_update(crypto_context_t context, crypto_data_t *data,
crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
int rv;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
KCF_PROV_REFHOLD(pd);
KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_UPDATE, ctx->cc_session, NULL,
NULL, data, NULL, NULL);
rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
KCF_PROV_REFRELE(pd);
return (rv);
}
/*
* crypto_mac_update()
*
* Arguments:
* context: A crypto_context_t initialized by mac_init().
* data: The message part to be MAC'ed
* cr: crypto_call_req_t calling conditions and call back info.
*
* Description:
* Asynchronously submits a request for, or synchronously performs a
* part of a MAC operation.
*
* Context:
* Process or interrupt, according to the semantics dictated by the 'cr'.
*
* Returns:
* See comment in the beginning of the file.
*/
int
crypto_mac_update(crypto_context_t context, crypto_data_t *data,
crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
int rv;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
/* The fast path for SW providers. */
if (CHECK_FASTPATH(cr, pd)) {
rv = KCF_PROV_MAC_UPDATE(pd, ctx, data, NULL);
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_UPDATE,
ctx->cc_session, NULL, NULL, data, NULL, NULL);
rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
}
return (rv);
}
/*
* See comments for crypto_digest_final().
*/
int
crypto_sign_final(crypto_context_t context, crypto_data_t *signature,
crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
int rv;
kcf_req_params_t params;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
KCF_PROV_REFHOLD(pd);
KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_FINAL, ctx->cc_session, NULL,
NULL, NULL, signature, NULL);
rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
KCF_PROV_REFRELE(pd);
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx);
return (rv);
}
/*
* crypto_mac_final()
*
* Arguments:
* context: A crypto_context_t initialized by mac_init().
* mac: Storage for the message authentication code.
* cr: crypto_call_req_t calling conditions and call back info.
*
* Description:
* Asynchronously submits a request for, or synchronously performs a
* part of a message authentication operation.
*
* Context:
* Process or interrupt, according to the semantics dictated by the 'cr'.
*
* Returns:
* See comment in the beginning of the file.
*/
int
crypto_mac_final(crypto_context_t context, crypto_data_t *mac,
crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
int rv;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
/* The fast path for SW providers. */
if (CHECK_FASTPATH(cr, pd)) {
rv = KCF_PROV_MAC_FINAL(pd, ctx, mac, NULL);
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_FINAL,
ctx->cc_session, NULL, NULL, NULL, mac, NULL);
rv = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
}
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx);
return (rv);
}
int
crypto_object_find_final(crypto_provider_t provider, void *cookie,
crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(
object_ops), CRYPTO_OBJECT_OFFSET(object_find_final),
CHECK_RESTRICT(crq), pd, &real_provider);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
if (CHECK_FASTPATH(crq, real_provider)) {
rv = KCF_PROV_OBJECT_FIND_FINAL(real_provider,
cookie, KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_FIND_FINAL,
0, 0, NULL, 0, NULL, 0, NULL, cookie, 0, NULL);
rv = kcf_submit_request(real_provider, NULL, NULL, ¶ms,
B_FALSE);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
int
crypto_session_logout(crypto_provider_t provider, crypto_session_id_t sid,
crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(
session_ops), CRYPTO_SESSION_OFFSET(session_logout),
pd, &real_provider);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
if (CHECK_FASTPATH(crq, real_provider)) {
rv = KCF_PROV_SESSION_LOGOUT(real_provider, sid,
KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_SESSION_OPS_PARAMS(¶ms, KCF_OP_SESSION_LOGOUT,
NULL, sid, 0, NULL, 0, real_provider);
rv = kcf_submit_request(real_provider, NULL, crq,
¶ms, B_FALSE);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
/*
* crypto_digest_prov()
*
* Arguments:
* pd: pointer to the descriptor of the provider to use for this
* operation.
* sid: provider session id.
* mech: crypto_mechanism_t pointer.
* mech_type is a valid value previously returned by
* crypto_mech2id();
* When the mech's parameter is not NULL, its definition depends
* on the standard definition of the mechanism.
* data: The message to be digested.
* digest: Storage for the digest. The length needed depends on the
* mechanism.
* cr: crypto_call_req_t calling conditions and call back info.
*
* Description:
* Asynchronously submits a request for, or synchronously performs the
* digesting operation of 'data' on the specified
* provider with the specified session.
* When complete and successful, 'digest' will contain the digest value.
* The caller should hold a reference on the specified provider
* descriptor before calling this function.
*
* Context:
* Process or interrupt, according to the semantics dictated by the 'cr'.
*
* Returns:
* See comment in the beginning of the file.
*/
int
crypto_digest_prov(crypto_provider_t provider, crypto_session_id_t sid,
crypto_mechanism_t *mech, crypto_data_t *data, crypto_data_t *digest,
crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider(mech->cm_type,
CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq),
pd, &real_provider, CRYPTO_FG_DIGEST_ATOMIC);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
KCF_WRAP_DIGEST_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, sid, mech, NULL,
data, digest);
/* no crypto context to carry between multiple parts. */
rv = kcf_submit_request(real_provider, NULL, crq, ¶ms, B_FALSE);
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
/*
* See comments for crypto_mac_update() and crypto_mac_final().
*/
int
crypto_mac_single(crypto_context_t context, crypto_data_t *data,
crypto_data_t *mac, crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
int error;
kcf_req_params_t params;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
/* The fast path for SW providers. */
if (CHECK_FASTPATH(cr, pd)) {
error = KCF_PROV_MAC(pd, ctx, data, mac, NULL);
KCF_PROV_INCRSTATS(pd, error);
} else {
KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_SINGLE, pd->pd_sid,
NULL, NULL, data, mac, NULL);
error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
}
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(error, kcf_ctx);
return (error);
}
/*
* Performs a digest update on the specified key. Note that there is
* no k-API crypto_digest_key() equivalent of this function.
*/
int
crypto_digest_key_prov(crypto_context_t context, crypto_key_t *key,
crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
int error;
kcf_req_params_t params;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
ASSERT(pd->pd_prov_type != CRYPTO_LOGICAL_PROVIDER);
KCF_PROV_REFHOLD(pd);
/* The fast path for SW providers. */
if (CHECK_FASTPATH(cr, pd)) {
error = KCF_PROV_DIGEST_KEY(pd, ctx, key, NULL);
KCF_PROV_INCRSTATS(pd, error);
} else {
KCF_WRAP_DIGEST_OPS_PARAMS(¶ms, KCF_OP_DIGEST_KEY,
ctx->cc_session, NULL, key, NULL, NULL);
error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
}
KCF_PROV_REFRELE(pd);
return (error);
}
int
crypto_sign_recover_single(crypto_context_t context, crypto_data_t *data,
crypto_data_t *signature, crypto_call_req_t *cr)
{
crypto_ctx_t *ctx = (crypto_ctx_t *)context;
kcf_context_t *kcf_ctx;
kcf_provider_desc_t *pd;
int error;
kcf_req_params_t params;
if ((ctx == NULL) ||
((kcf_ctx = (kcf_context_t *)ctx->cc_framework_private) == NULL) ||
((pd = kcf_ctx->kc_prov_desc) == NULL)) {
return (CRYPTO_INVALID_CONTEXT);
}
KCF_PROV_REFHOLD(pd);
KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SIGN_RECOVER, 0, NULL,
NULL, data, signature, NULL);
error = kcf_submit_request(pd, ctx, cr, ¶ms, B_FALSE);
KCF_PROV_REFRELE(pd);
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(error, kcf_ctx);
return (error);
}
/*
* crypto_mac_init_prov()
*
* Arguments:
* pd: pointer to the descriptor of the provider to use for this
* operation.
* sid: provider session id.
* mech: crypto_mechanism_t pointer.
* mech_type is a valid value previously returned by
* crypto_mech2id();
* When the mech's parameter is not NULL, its definition depends
* on the standard definition of the mechanism.
* key: pointer to a crypto_key_t structure.
* tmpl: a crypto_ctx_template_t, opaque template of a context of a
* MAC with the 'mech' using 'key'. 'tmpl' is created by
* a previous call to crypto_create_ctx_template().
* ctxp: Pointer to a crypto_context_t.
* cr: crypto_call_req_t calling conditions and call back info.
*
* Description:
* Asynchronously submits a request for, or synchronously performs the
* initialization of a MAC operation on the specified provider with
* the specified session.
* When possible and applicable, will internally use the pre-computed MAC
* context from the context template, tmpl.
* When complete and successful, 'ctxp' will contain a crypto_context_t
* valid for later calls to mac_update() and mac_final().
* The caller should hold a reference on the specified provider
* descriptor before calling this function.
*
* Context:
* Process or interrupt, according to the semantics dictated by the 'cr'.
*
* Returns:
* See comment in the beginning of the file.
*/
int
crypto_mac_init_prov(crypto_provider_t provider, crypto_session_id_t sid,
crypto_mechanism_t *mech, crypto_key_t *key, crypto_spi_ctx_template_t tmpl,
crypto_context_t *ctxp, crypto_call_req_t *crq)
{
int rv;
crypto_ctx_t *ctx;
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider(mech->cm_type,
CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
&real_provider, CRYPTO_FG_MAC);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
/* Allocate and initialize the canonical context */
if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) {
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (CRYPTO_HOST_MEMORY);
}
/* The fast path for SW providers. */
if (CHECK_FASTPATH(crq, pd)) {
crypto_mechanism_t lmech;
lmech = *mech;
KCF_SET_PROVIDER_MECHNUM(mech->cm_type, real_provider, &lmech);
rv = KCF_PROV_MAC_INIT(real_provider, ctx, &lmech, key, tmpl,
KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_MAC_OPS_PARAMS(¶ms, KCF_OP_INIT, sid, mech, key,
NULL, NULL, tmpl);
rv = kcf_submit_request(real_provider, ctx, crq, ¶ms,
B_FALSE);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED))
*ctxp = (crypto_context_t)ctx;
else {
/* Release the hold done in kcf_new_ctx(). */
KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private);
}
return (rv);
}
/*
* This routine is called for blocking reads.
*
* The argument is_taskq_thr indicates whether the caller is
* the taskq thread dispatched by the timeout handler routine.
* In this case, we cycle through all the providers
* submitting a request to each provider to generate random numbers.
*
* For other cases, we pick a provider and submit a request to generate
* random numbers. We retry using another provider if we get an error.
*
* Returns the number of bytes that are written to 'ptr'. Returns -1
* if no provider is found. ptr and need are unchanged.
*/
static int
rngprov_getbytes(uint8_t *ptr, size_t need, boolean_t is_taskq_thr)
{
int rv;
int prov_cnt = 0;
int total_bytes = 0;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
kcf_prov_tried_t *list = NULL;
while ((pd = kcf_get_mech_provider(rngmech_type, NULL, NULL, &rv,
list, CRYPTO_FG_RANDOM, 0)) != NULL) {
prov_cnt++;
KCF_WRAP_RANDOM_OPS_PARAMS(¶ms, KCF_OP_RANDOM_GENERATE,
pd->pd_sid, ptr, need, 0, 0);
rv = kcf_submit_request(pd, NULL, NULL, ¶ms, B_FALSE);
ASSERT(rv != CRYPTO_QUEUED);
if (rv == CRYPTO_SUCCESS) {
total_bytes += need;
if (is_taskq_thr)
rndc_addbytes(ptr, need);
else {
KCF_PROV_REFRELE(pd);
break;
}
}
if (is_taskq_thr || rv != CRYPTO_SUCCESS) {
/* Add pd to the linked list of providers tried. */
if (kcf_insert_triedlist(&list, pd, KM_SLEEP) == NULL) {
KCF_PROV_REFRELE(pd);
break;
}
}
}
if (list != NULL)
kcf_free_triedlist(list);
if (prov_cnt == 0) { /* no provider could be found. */
rng_prov_found = B_FALSE;
return (-1);
} else {
rng_prov_found = B_TRUE;
/* See comments in kcf_rngprov_check() */
rng_ok_to_log = B_TRUE;
}
return (total_bytes);
}
/*
* Same as crypto_digest_prov(), but relies on the KCF scheduler to
* choose a provider. See crypto_digest_prov() comments for more information.
*/
int
crypto_digest(crypto_mechanism_t *mech, crypto_data_t *data,
crypto_data_t *digest, crypto_call_req_t *crq)
{
int error;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
kcf_prov_tried_t *list = NULL;
retry:
/* The pd is returned held */
if ((pd = kcf_get_mech_provider(mech->cm_type, NULL, &error, list,
CRYPTO_FG_DIGEST_ATOMIC, CHECK_RESTRICT(crq),
data->cd_length)) == NULL) {
if (list != NULL)
kcf_free_triedlist(list);
return (error);
}
/* The fast path for SW providers. */
if (CHECK_FASTPATH(crq, pd)) {
crypto_mechanism_t lmech;
lmech = *mech;
KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech);
error = KCF_PROV_DIGEST_ATOMIC(pd, pd->pd_sid, &lmech, data,
digest, KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, error);
} else {
KCF_WRAP_DIGEST_OPS_PARAMS(¶ms, KCF_OP_ATOMIC, pd->pd_sid,
mech, NULL, data, digest);
/* no crypto context to carry between multiple parts. */
error = kcf_submit_request(pd, NULL, crq, ¶ms, B_FALSE);
}
if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
IS_RECOVERABLE(error)) {
/* Add pd to the linked list of providers tried. */
if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
goto retry;
}
if (list != NULL)
kcf_free_triedlist(list);
KCF_PROV_REFRELE(pd);
return (error);
}
int
crypto_sign_recover_init_prov(crypto_provider_t provider,
crypto_session_id_t sid, crypto_mechanism_t *mech, crypto_key_t *key,
crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq)
{
int rv;
crypto_ctx_t *ctx;
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider(mech->cm_type,
CRYPTO_MECH_INVALID, CHECK_RESTRICT(crq), pd,
&real_provider, CRYPTO_FG_SIGN_RECOVER);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
/* Allocate and initialize the canonical context */
if ((ctx = kcf_new_ctx(crq, real_provider, sid)) == NULL) {
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (CRYPTO_HOST_MEMORY);
}
KCF_WRAP_SIGN_OPS_PARAMS(¶ms, KCF_OP_SIGN_RECOVER_INIT, sid, mech,
key, NULL, NULL, tmpl);
rv = kcf_submit_request(real_provider, ctx, crq, ¶ms, B_FALSE);
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
if ((rv == CRYPTO_SUCCESS) || (rv == CRYPTO_QUEUED))
*ctxp = (crypto_context_t)ctx;
else {
/* Release the hold done in kcf_new_ctx(). */
KCF_CONTEXT_REFRELE((kcf_context_t *)ctx->cc_framework_private);
}
return (rv);
}
int
crypto_object_find_init(crypto_provider_t provider, crypto_session_id_t sid,
crypto_object_attribute_t *attrs, uint_t count, void **cookie,
crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
ASSERT(KCF_PROV_REFHELD(pd));
if (cookie == NULL) {
return (CRYPTO_ARGUMENTS_BAD);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(
object_ops), CRYPTO_OBJECT_OFFSET(object_find_init),
CHECK_RESTRICT(crq), pd, &real_provider);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
if (CHECK_FASTPATH(crq, real_provider)) {
rv = KCF_PROV_OBJECT_FIND_INIT(real_provider,
sid, attrs, count, cookie, KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_OBJECT_OPS_PARAMS(¶ms, KCF_OP_OBJECT_FIND_INIT,
sid, 0, attrs, count, NULL, 0, cookie, NULL, 0, NULL);
rv = kcf_submit_request(real_provider, NULL, crq,
¶ms, B_FALSE);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
int
crypto_session_open(crypto_provider_t provider, crypto_session_id_t *sidp,
crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *real_provider;
kcf_provider_desc_t *pd = provider;
ASSERT(KCF_PROV_REFHELD(pd));
/* find a provider that supports session ops */
(void) kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(session_ops),
CRYPTO_SESSION_OFFSET(session_open), pd, &real_provider);
if (real_provider != NULL) {
int rv;
ASSERT(real_provider == pd ||
pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER);
if (CHECK_FASTPATH(crq, pd)) {
rv = KCF_PROV_SESSION_OPEN(real_provider, sidp,
KCF_SWFP_RHNDL(crq), pd);
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_SESSION_OPS_PARAMS(¶ms,
KCF_OP_SESSION_OPEN, sidp, 0, CRYPTO_USER, NULL,
0, pd);
rv = kcf_submit_request(real_provider, NULL, crq,
¶ms, B_FALSE);
}
KCF_PROV_REFRELE(real_provider);
if (rv != CRYPTO_SUCCESS) {
return (rv);
}
}
return (CRYPTO_SUCCESS);
}
int
crypto_session_close(crypto_provider_t provider, crypto_session_id_t sid,
crypto_call_req_t *crq)
{
int rv;
kcf_req_params_t params;
kcf_provider_desc_t *real_provider;
kcf_provider_desc_t *pd = provider;
if (pd == NULL)
return (CRYPTO_ARGUMENTS_BAD);
ASSERT(KCF_PROV_REFHELD(pd));
/* find a provider that supports session ops */
(void) kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(session_ops),
CRYPTO_SESSION_OFFSET(session_close), pd, &real_provider);
ASSERT(real_provider == pd ||
pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER);
/* edge case is where the logical provider has no members */
if (real_provider != NULL) {
/* The fast path for SW providers. */
if (CHECK_FASTPATH(crq, pd)) {
rv = KCF_PROV_SESSION_CLOSE(real_provider,
sid, KCF_SWFP_RHNDL(crq), pd);
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_SESSION_OPS_PARAMS(¶ms,
KCF_OP_SESSION_CLOSE, NULL, sid,
CRYPTO_USER, NULL, 0, pd);
rv = kcf_submit_request(real_provider, NULL, crq,
¶ms, B_FALSE);
}
KCF_PROV_REFRELE(real_provider);
}
return (CRYPTO_SUCCESS);
}
int
crypto_object_set_attribute_value(crypto_provider_t provider,
crypto_session_id_t sid, crypto_object_id_t object_handle,
crypto_object_attribute_t *attrs, uint_t count, crypto_call_req_t *crq)
{
kcf_req_params_t params;
kcf_provider_desc_t *pd = provider;
kcf_provider_desc_t *real_provider = pd;
int rv;
ASSERT(KCF_PROV_REFHELD(pd));
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER) {
rv = kcf_get_hardware_provider_nomech(CRYPTO_OPS_OFFSET(
object_ops),
CRYPTO_OBJECT_OFFSET(object_set_attribute_value),
CHECK_RESTRICT(crq), pd, &real_provider);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
if (CHECK_FASTPATH(crq, real_provider)) {
rv = KCF_PROV_OBJECT_SET_ATTRIBUTE_VALUE(real_provider,
sid, object_handle, attrs, count, KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, rv);
} else {
KCF_WRAP_OBJECT_OPS_PARAMS(¶ms,
KCF_OP_OBJECT_SET_ATTRIBUTE_VALUE, sid, object_handle,
attrs, count, NULL, 0, NULL, NULL, 0, NULL);
rv = kcf_submit_request(real_provider, NULL, crq,
¶ms, B_FALSE);
}
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
static int
sign_sr_atomic_common(crypto_mechanism_t *mech, crypto_key_t *key,
crypto_data_t *data, crypto_ctx_template_t tmpl, crypto_data_t *signature,
crypto_call_req_t *crq, crypto_func_group_t fg)
{
int error;
kcf_mech_entry_t *me;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
kcf_prov_tried_t *list = NULL;
kcf_ctx_template_t *ctx_tmpl;
crypto_spi_ctx_template_t spi_ctx_tmpl = NULL;
retry:
/* The pd is returned held */
if ((pd = kcf_get_mech_provider(mech->cm_type, &me, &error, list, fg,
CHECK_RESTRICT(crq), data->cd_length)) == NULL) {
if (list != NULL)
kcf_free_triedlist(list);
return (error);
}
/*
* For SW providers, check the validity of the context template
* It is very rare that the generation number mis-matches, so
* it is acceptable to fail here, and let the consumer recover by
* freeing this tmpl and create a new one for the key and new SW
* provider.
*/
if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) &&
((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) {
if (ctx_tmpl->ct_generation != me->me_gen_swprov) {
if (list != NULL)
kcf_free_triedlist(list);
KCF_PROV_REFRELE(pd);
return (CRYPTO_OLD_CTX_TEMPLATE);
} else {
spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl;
}
}
/* The fast path for SW providers. */
if (CHECK_FASTPATH(crq, pd)) {
crypto_mechanism_t lmech;
lmech = *mech;
KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech);
if (fg == CRYPTO_FG_SIGN_ATOMIC)
error = KCF_PROV_SIGN_ATOMIC(pd, pd->pd_sid, &lmech,
key, data, spi_ctx_tmpl, signature,
KCF_SWFP_RHNDL(crq));
else
error = KCF_PROV_SIGN_RECOVER_ATOMIC(pd, pd->pd_sid,
&lmech, key, data, spi_ctx_tmpl, signature,
KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, error);
} else {
kcf_op_type_t op = ((fg == CRYPTO_FG_SIGN_ATOMIC) ?
KCF_OP_ATOMIC : KCF_OP_SIGN_RECOVER_ATOMIC);
KCF_WRAP_SIGN_OPS_PARAMS(¶ms, op, pd->pd_sid,
mech, key, data, signature, spi_ctx_tmpl);
/* no crypto context to carry between multiple parts. */
error = kcf_submit_request(pd, NULL, crq, ¶ms, B_FALSE);
}
if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
IS_RECOVERABLE(error)) {
/* Add pd to the linked list of providers tried. */
if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
goto retry;
}
if (list != NULL)
kcf_free_triedlist(list);
KCF_PROV_REFRELE(pd);
return (error);
}
/*
* Cycle through all the providers submitting a request to each provider
* to generate random numbers. This is called for the modes - NONBLOCK_EXTRACT
* and ALWAYS_EXTRACT.
*
* Returns the number of bytes that are written to 'ptr'. Returns -1
* if no provider is found. ptr and len are unchanged.
*/
static int
rngprov_getbytes_nblk(uint8_t *ptr, size_t len)
{
int rv, total_bytes;
size_t blen;
uchar_t *rndbuf;
kcf_provider_desc_t *pd;
kcf_req_params_t params;
crypto_call_req_t req;
kcf_prov_tried_t *list = NULL;
int prov_cnt = 0;
blen = 0;
total_bytes = 0;
req.cr_flag = CRYPTO_SKIP_REQID;
req.cr_callback_func = notify_done;
while ((pd = kcf_get_mech_provider(rngmech_type, NULL, NULL, &rv,
list, CRYPTO_FG_RANDOM, 0)) != NULL) {
prov_cnt ++;
switch (pd->pd_prov_type) {
case CRYPTO_HW_PROVIDER:
/*
* We have to allocate a buffer here as we can not
* assume that the input buffer will remain valid
* when the callback comes. We use a fixed size buffer
* to simplify the book keeping.
*/
rndbuf = kmem_alloc(MINEXTRACTBYTES, KM_NOSLEEP);
if (rndbuf == NULL) {
KCF_PROV_REFRELE(pd);
if (list != NULL)
kcf_free_triedlist(list);
return (total_bytes);
}
req.cr_callback_arg = rndbuf;
KCF_WRAP_RANDOM_OPS_PARAMS(¶ms,
KCF_OP_RANDOM_GENERATE,
pd->pd_sid, rndbuf, MINEXTRACTBYTES, 0, 0);
break;
case CRYPTO_SW_PROVIDER:
/*
* We do not need to allocate a buffer in the software
* provider case as there is no callback involved. We
* avoid any extra data copy by directly passing 'ptr'.
*/
KCF_WRAP_RANDOM_OPS_PARAMS(¶ms,
KCF_OP_RANDOM_GENERATE,
pd->pd_sid, ptr, len, 0, 0);
break;
}
rv = kcf_submit_request(pd, NULL, &req, ¶ms, B_FALSE);
if (rv == CRYPTO_SUCCESS) {
switch (pd->pd_prov_type) {
case CRYPTO_HW_PROVIDER:
/*
* Since we have the input buffer handy,
* we directly copy to it rather than
* adding to the pool.
*/
blen = min(MINEXTRACTBYTES, len);
bcopy(rndbuf, ptr, blen);
if (len < MINEXTRACTBYTES)
rndc_addbytes(rndbuf + len,
MINEXTRACTBYTES - len);
ptr += blen;
len -= blen;
total_bytes += blen;
break;
case CRYPTO_SW_PROVIDER:
total_bytes += len;
len = 0;
break;
}
}
/*
* We free the buffer in the callback routine
* for the CRYPTO_QUEUED case.
*/
if (pd->pd_prov_type == CRYPTO_HW_PROVIDER &&
rv != CRYPTO_QUEUED) {
bzero(rndbuf, MINEXTRACTBYTES);
kmem_free(rndbuf, MINEXTRACTBYTES);
}
if (len == 0) {
KCF_PROV_REFRELE(pd);
break;
}
if (rv != CRYPTO_SUCCESS) {
/* Add pd to the linked list of providers tried. */
if (kcf_insert_triedlist(&list, pd, KM_NOSLEEP) ==
NULL) {
KCF_PROV_REFRELE(pd);
break;
}
}
}
if (list != NULL) {
kcf_free_triedlist(list);
}
if (prov_cnt == 0) { /* no provider could be found. */
rng_prov_found = B_FALSE;
return (-1);
} else {
rng_prov_found = B_TRUE;
/* See comments in kcf_rngprov_check() */
rng_ok_to_log = B_TRUE;
}
return (total_bytes);
}
/*
* This routine is used to add cryptographic providers to the KEF framework.
* Providers pass a crypto_provider_info structure to crypto_register_provider()
* and get back a handle. The crypto_provider_info structure contains a
* list of mechanisms supported by the provider and an ops vector containing
* provider entry points. Hardware providers call this routine in their attach
* routines. Software providers call this routine in their _init() routine.
*/
int
crypto_register_provider(crypto_provider_info_t *info,
crypto_kcf_provider_handle_t *handle)
{
char ks_name[KSTAT_STRLEN];
kcf_provider_desc_t *prov_desc = NULL;
int ret = CRYPTO_ARGUMENTS_BAD;
if (info->pi_interface_version > CRYPTO_SPI_VERSION_3)
return (CRYPTO_VERSION_MISMATCH);
/*
* Check provider type, must be software, hardware, or logical.
*/
if (info->pi_provider_type != CRYPTO_HW_PROVIDER &&
info->pi_provider_type != CRYPTO_SW_PROVIDER &&
info->pi_provider_type != CRYPTO_LOGICAL_PROVIDER)
return (CRYPTO_ARGUMENTS_BAD);
/*
* Allocate and initialize a new provider descriptor. We also
* hold it and release it when done.
*/
prov_desc = kcf_alloc_provider_desc(info);
KCF_PROV_REFHOLD(prov_desc);
prov_desc->pd_prov_type = info->pi_provider_type;
/* provider-private handle, opaque to KCF */
prov_desc->pd_prov_handle = info->pi_provider_handle;
/* copy provider description string */
if (info->pi_provider_description != NULL) {
/*
* pi_provider_descriptor is a string that can contain
* up to CRYPTO_PROVIDER_DESCR_MAX_LEN + 1 characters
* INCLUDING the terminating null character. A bcopy()
* is necessary here as pd_description should not have
* a null character. See comments in kcf_alloc_provider_desc()
* for details on pd_description field.
*/
bcopy(info->pi_provider_description, prov_desc->pd_description,
MIN(strlen(info->pi_provider_description),
(size_t)CRYPTO_PROVIDER_DESCR_MAX_LEN));
}
if (info->pi_provider_type != CRYPTO_LOGICAL_PROVIDER) {
if (info->pi_ops_vector == NULL) {
goto bail;
}
copy_ops_vector_v1(info->pi_ops_vector,
prov_desc->pd_ops_vector);
if (info->pi_interface_version >= CRYPTO_SPI_VERSION_2) {
copy_ops_vector_v2(info->pi_ops_vector,
prov_desc->pd_ops_vector);
prov_desc->pd_flags = info->pi_flags;
}
if (info->pi_interface_version == CRYPTO_SPI_VERSION_3) {
copy_ops_vector_v3(info->pi_ops_vector,
prov_desc->pd_ops_vector);
}
}
/* object_ops and nostore_key_ops are mutually exclusive */
if (prov_desc->pd_ops_vector->co_object_ops &&
prov_desc->pd_ops_vector->co_nostore_key_ops) {
goto bail;
}
/* process the mechanisms supported by the provider */
if ((ret = init_prov_mechs(info, prov_desc)) != CRYPTO_SUCCESS)
goto bail;
/*
* Add provider to providers tables, also sets the descriptor
* pd_prov_id field.
*/
if ((ret = kcf_prov_tab_add_provider(prov_desc)) != CRYPTO_SUCCESS) {
undo_register_provider(prov_desc, B_FALSE);
goto bail;
}
/*
* We create a taskq only for a hardware provider. The global
* software queue is used for software providers. We handle ordering
* of multi-part requests in the taskq routine. So, it is safe to
* have multiple threads for the taskq. We pass TASKQ_PREPOPULATE flag
* to keep some entries cached to improve performance.
*/
if (prov_desc->pd_prov_type == CRYPTO_HW_PROVIDER)
prov_desc->pd_sched_info.ks_taskq = taskq_create("kcf_taskq",
crypto_taskq_threads, minclsyspri,
crypto_taskq_minalloc, crypto_taskq_maxalloc,
TASKQ_PREPOPULATE);
else
prov_desc->pd_sched_info.ks_taskq = NULL;
/* no kernel session to logical providers */
if (prov_desc->pd_prov_type != CRYPTO_LOGICAL_PROVIDER) {
/*
* Open a session for session-oriented providers. This session
* is used for all kernel consumers. This is fine as a provider
* is required to support multiple thread access to a session.
* We can do this only after the taskq has been created as we
* do a kcf_submit_request() to open the session.
*/
if (KCF_PROV_SESSION_OPS(prov_desc) != NULL) {
kcf_req_params_t params;
KCF_WRAP_SESSION_OPS_PARAMS(¶ms,
KCF_OP_SESSION_OPEN, &prov_desc->pd_sid, 0,
CRYPTO_USER, NULL, 0, prov_desc);
ret = kcf_submit_request(prov_desc, NULL, NULL, ¶ms,
B_FALSE);
if (ret != CRYPTO_SUCCESS) {
undo_register_provider(prov_desc, B_TRUE);
ret = CRYPTO_FAILED;
goto bail;
}
}
}
if (prov_desc->pd_prov_type != CRYPTO_LOGICAL_PROVIDER) {
/*
* Create the kstat for this provider. There is a kstat
* installed for each successfully registered provider.
* This kstat is deleted, when the provider unregisters.
*/
if (prov_desc->pd_prov_type == CRYPTO_SW_PROVIDER) {
(void) snprintf(ks_name, KSTAT_STRLEN, "%s_%s",
"NONAME", "provider_stats");
} else {
(void) snprintf(ks_name, KSTAT_STRLEN, "%s_%d_%u_%s",
"NONAME", 0,
prov_desc->pd_prov_id, "provider_stats");
}
prov_desc->pd_kstat = kstat_create("kcf", 0, ks_name, "crypto",
KSTAT_TYPE_NAMED, sizeof (kcf_prov_stats_t) /
sizeof (kstat_named_t), KSTAT_FLAG_VIRTUAL);
if (prov_desc->pd_kstat != NULL) {
bcopy(&kcf_stats_ks_data_template,
&prov_desc->pd_ks_data,
sizeof (kcf_stats_ks_data_template));
prov_desc->pd_kstat->ks_data = &prov_desc->pd_ks_data;
KCF_PROV_REFHOLD(prov_desc);
KCF_PROV_IREFHOLD(prov_desc);
prov_desc->pd_kstat->ks_private = prov_desc;
prov_desc->pd_kstat->ks_update = kcf_prov_kstat_update;
kstat_install(prov_desc->pd_kstat);
}
}
if (prov_desc->pd_prov_type == CRYPTO_HW_PROVIDER)
process_logical_providers(info, prov_desc);
mutex_enter(&prov_desc->pd_lock);
prov_desc->pd_state = KCF_PROV_READY;
mutex_exit(&prov_desc->pd_lock);
kcf_do_notify(prov_desc, B_TRUE);
*handle = prov_desc->pd_kcf_prov_handle;
ret = CRYPTO_SUCCESS;
bail:
KCF_PROV_REFRELE(prov_desc);
return (ret);
}
/*
* Same as crypto_mac_verify_prov(), but relies on the KCF scheduler to choose
* a provider. See crypto_mac_verify_prov() comments for more information.
*/
int
crypto_mac_verify(crypto_mechanism_t *mech, crypto_data_t *data,
crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *mac,
crypto_call_req_t *crq)
{
int error;
kcf_mech_entry_t *me;
kcf_req_params_t params;
kcf_provider_desc_t *pd;
kcf_ctx_template_t *ctx_tmpl;
crypto_spi_ctx_template_t spi_ctx_tmpl = NULL;
kcf_prov_tried_t *list = NULL;
retry:
/* The pd is returned held */
if ((pd = kcf_get_mech_provider(mech->cm_type, &me, &error,
list, CRYPTO_FG_MAC_ATOMIC, CHECK_RESTRICT(crq),
data->cd_length)) == NULL) {
if (list != NULL)
kcf_free_triedlist(list);
return (error);
}
/*
* For SW providers, check the validity of the context template
* It is very rare that the generation number mis-matches, so
* is acceptable to fail here, and let the consumer recover by
* freeing this tmpl and create a new one for the key and new SW
* provider
*/
if ((pd->pd_prov_type == CRYPTO_SW_PROVIDER) &&
((ctx_tmpl = (kcf_ctx_template_t *)tmpl) != NULL)) {
if (ctx_tmpl->ct_generation != me->me_gen_swprov) {
if (list != NULL)
kcf_free_triedlist(list);
KCF_PROV_REFRELE(pd);
return (CRYPTO_OLD_CTX_TEMPLATE);
} else {
spi_ctx_tmpl = ctx_tmpl->ct_prov_tmpl;
}
}
/* The fast path for SW providers. */
if (CHECK_FASTPATH(crq, pd)) {
crypto_mechanism_t lmech;
lmech = *mech;
KCF_SET_PROVIDER_MECHNUM(mech->cm_type, pd, &lmech);
error = KCF_PROV_MAC_VERIFY_ATOMIC(pd, pd->pd_sid, &lmech, key,
data, mac, spi_ctx_tmpl, KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, error);
} else {
if (pd->pd_prov_type == CRYPTO_HW_PROVIDER &&
(pd->pd_flags & CRYPTO_HASH_NO_UPDATE) &&
(data->cd_length > pd->pd_hash_limit)) {
/* see comments in crypto_mac() */
error = CRYPTO_BUFFER_TOO_BIG;
} else {
KCF_WRAP_MAC_OPS_PARAMS(¶ms,
KCF_OP_MAC_VERIFY_ATOMIC, pd->pd_sid, mech,
key, data, mac, spi_ctx_tmpl);
error = kcf_submit_request(pd, NULL, crq, ¶ms,
KCF_ISDUALREQ(crq));
}
}
if (error != CRYPTO_SUCCESS && error != CRYPTO_QUEUED &&
IS_RECOVERABLE(error)) {
/* Add pd to the linked list of providers tried. */
if (kcf_insert_triedlist(&list, pd, KCF_KMFLAG(crq)) != NULL)
goto retry;
}
if (list != NULL)
kcf_free_triedlist(list);
KCF_PROV_REFRELE(pd);
return (error);
}
