kcf_verify.c revision 2f2f8eeb149e8cf47dfa3d6c71cde31ad671e029
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/errno.h>
#include <sys/types.h>
#include <sys/kmem.h>
#include <sys/sysmacros.h>
#include <sys/crypto/common.h>
#include <sys/crypto/impl.h>
#include <sys/crypto/api.h>
#include <sys/crypto/spi.h>
#include <sys/crypto/sched_impl.h>
#define CRYPTO_OPS_OFFSET(f) offsetof(crypto_ops_t, co_##f)
#define CRYPTO_VERIFY_OFFSET(f) offsetof(crypto_verify_ops_t, f)
/*
* Verify entry points.
*/
/*
* See comments for crypto_digest_init_prov().
*/
int
crypto_verify_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_VERIFY);
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_VERIFY_OPS_PARAMS(&params, KCF_OP_INIT, sid, mech,
key, NULL, NULL, tmpl);
rv = kcf_submit_request(real_provider, ctx, crq, &params, 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_verify_init(crypto_mechanism_t *mech, crypto_key_t *key,
crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *crq)
{
int error;
kcf_mech_entry_t *me;
kcf_provider_desc_t *pd;
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, CRYPTO_FG_VERIFY, CHECK_RESTRICT(crq), 0)) == 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;
}
}
error = crypto_verify_init_prov(pd, pd->pd_sid, mech, key, spi_ctx_tmpl,
ctxp, 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);
}
int
crypto_verify_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_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_SINGLE, 0, NULL,
NULL, data, signature, NULL);
error = kcf_submit_request(pd, ctx, cr, &params, B_FALSE);
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(error, kcf_ctx);
return (error);
}
/*
* See comments for crypto_digest_update().
*/
int
crypto_verify_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_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_UPDATE, ctx->cc_session,
NULL, NULL, data, NULL, NULL);
rv = kcf_submit_request(pd, ctx, cr, &params, B_FALSE);
return (rv);
}
/*
* See comments for crypto_digest_final().
*/
int
crypto_verify_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;
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_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_FINAL, ctx->cc_session,
NULL, NULL, NULL, signature, NULL);
rv = kcf_submit_request(pd, ctx, cr, &params, B_FALSE);
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(rv, kcf_ctx);
return (rv);
}
int
crypto_verify_prov(crypto_provider_t provider, crypto_session_id_t sid,
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)
{
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_VERIFY_ATOMIC);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
KCF_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_ATOMIC, sid, mech,
key, data, signature, tmpl);
rv = kcf_submit_request(real_provider, NULL, crq, &params, B_FALSE);
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
static int
verify_vr_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_VERIFY_ATOMIC)
error = KCF_PROV_VERIFY_ATOMIC(pd, pd->pd_sid, &lmech,
key, data, spi_ctx_tmpl, signature,
KCF_SWFP_RHNDL(crq));
else
/* Note: The argument order is different from above */
error = KCF_PROV_VERIFY_RECOVER_ATOMIC(pd, pd->pd_sid,
&lmech, key, signature, spi_ctx_tmpl, data,
KCF_SWFP_RHNDL(crq));
KCF_PROV_INCRSTATS(pd, error);
} else {
kcf_op_type_t op = ((fg == CRYPTO_FG_VERIFY_ATOMIC) ?
KCF_OP_ATOMIC : KCF_OP_VERIFY_RECOVER_ATOMIC);
KCF_WRAP_VERIFY_OPS_PARAMS(&params, 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, &params, 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_verify(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)
{
return (verify_vr_atomic_common(mech, key, data, tmpl, signature, crq,
CRYPTO_FG_VERIFY_ATOMIC));
}
int
crypto_verify_recover_prov(crypto_provider_t provider, crypto_session_id_t sid,
crypto_mechanism_t *mech, crypto_key_t *key, crypto_data_t *signature,
crypto_ctx_template_t tmpl, crypto_data_t *data, 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_VERIFY_RECOVER_ATOMIC);
if (rv != CRYPTO_SUCCESS)
return (rv);
}
KCF_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_VERIFY_RECOVER_ATOMIC,
sid, mech, key, data, signature, tmpl);
rv = kcf_submit_request(real_provider, NULL, crq, &params, B_FALSE);
if (pd->pd_prov_type == CRYPTO_LOGICAL_PROVIDER)
KCF_PROV_REFRELE(real_provider);
return (rv);
}
int
crypto_verify_recover(crypto_mechanism_t *mech, crypto_key_t *key,
crypto_data_t *signature, crypto_ctx_template_t tmpl, crypto_data_t *data,
crypto_call_req_t *crq)
{
return (verify_vr_atomic_common(mech, key, data, tmpl, signature, crq,
CRYPTO_FG_VERIFY_RECOVER_ATOMIC));
}
int
crypto_verify_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_VERIFY_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_VERIFY_OPS_PARAMS(&params, KCF_OP_VERIFY_RECOVER_INIT,
sid, mech, key, NULL, NULL, tmpl);
rv = kcf_submit_request(real_provider, ctx, crq, &params, 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_verify_recover_single(crypto_context_t context, crypto_data_t *signature,
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;
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_WRAP_VERIFY_OPS_PARAMS(&params, KCF_OP_VERIFY_RECOVER, 0, NULL,
NULL, data, signature, NULL);
error = kcf_submit_request(pd, ctx, cr, &params, B_FALSE);
/* Release the hold done in kcf_new_ctx() during init step. */
KCF_CONTEXT_COND_RELEASE(error, kcf_ctx);
return (error);
}