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/*
* 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.
* Copyright (c) 2018, Joyent, Inc.
*/
#include <pthread.h>
#include <errno.h>
#include <stdio.h>
#include <strings.h>
#include <sys/crypto/ioctl.h>
#include <security/cryptoki.h>
#include <security/pkcs11t.h>
#include "softSession.h"
#include "softObject.h"
#include "softOps.h"
#include "softMAC.h"
#include "kernelSoftCommon.h"
/*
* Do the operation(s) specified by opflag.
*/
CK_RV
do_soft_digest(void **s, CK_MECHANISM_PTR pMechanism, CK_BYTE_PTR pData,
CK_ULONG ulDataLen, CK_BYTE_PTR pDigest, CK_ULONG_PTR pulDigestLen,
int opflag)
{
soft_session_t *session_p;
CK_RV rv = CKR_ARGUMENTS_BAD;
session_p = *((soft_session_t **)s);
if (session_p == NULL) {
if (!(opflag & OP_INIT)) {
return (CKR_ARGUMENTS_BAD);
}
session_p = calloc(1, sizeof (soft_session_t));
/*
* Initialize the lock for the newly created session.
* We do only the minimum needed setup for the
* soft_digest* routines to succeed.
*/
if (pthread_mutex_init(&session_p->session_mutex, NULL) != 0) {
free(session_p);
return (CKR_CANT_LOCK);
}
*s = session_p;
} else if (opflag & OP_INIT) {
free_soft_ctx(session_p, OP_DIGEST);
}
if (opflag & OP_INIT) {
rv = soft_digest_init(session_p, pMechanism);
if (rv != CKR_OK)
return (rv);
}
if (opflag & OP_SINGLE) {
rv = soft_digest(session_p, pData, ulDataLen,
pDigest, pulDigestLen);
} else {
if (opflag & OP_UPDATE) {
rv = soft_digest_update(session_p, pData, ulDataLen);
if (rv != CKR_OK)
return (rv);
}
if (opflag & OP_FINAL) {
rv = soft_digest_final(session_p,
pDigest, pulDigestLen);
}
}
return (rv);
}
/*
* opflag specifies whether this is a sign or verify.
*/
CK_RV
do_soft_hmac_init(void **s, CK_MECHANISM_PTR pMechanism,
CK_BYTE_PTR kval, CK_ULONG klen, int opflag)
{
CK_RV rv;
soft_object_t keyobj;
secret_key_obj_t skeyobj;
soft_object_t *key_p;
soft_session_t *session_p;
session_p = *((soft_session_t **)s);
if (session_p == NULL) {
session_p = calloc(1, sizeof (soft_session_t));
/* See comments in do_soft_digest() above */
if (pthread_mutex_init(&session_p->session_mutex, NULL) != 0) {
free(session_p);
return (CKR_CANT_LOCK);
}
*s = session_p;
} else if (opflag & OP_INIT) {
free_soft_ctx(session_p, opflag);
}
/* Do the minimum needed setup for the call to succeed */
key_p = &keyobj;
bzero(key_p, sizeof (soft_object_t));
key_p->class = CKO_SECRET_KEY;
key_p->key_type = CKK_GENERIC_SECRET;
bzero(&skeyobj, sizeof (secret_key_obj_t));
OBJ_SEC(key_p) = &skeyobj;
OBJ_SEC_VALUE(key_p) = kval;
OBJ_SEC_VALUE_LEN(key_p) = klen;
rv = soft_hmac_sign_verify_init_common(session_p, pMechanism,
key_p, opflag & OP_SIGN);
return (rv);
}
/*
* opflag specifies whether this is a sign or verify.
*/
CK_RV
do_soft_hmac_update(void **s, CK_BYTE_PTR pData, CK_ULONG ulDataLen, int opflag)
{
soft_session_t *session_p;
session_p = *((soft_session_t **)s);
if (session_p == NULL) {
return (CKR_ARGUMENTS_BAD);
}
return (soft_hmac_sign_verify_update(session_p,
pData, ulDataLen, opflag & OP_SIGN));
}
/*
* opflag specifies whether this is a final or single.
*/
CK_RV
do_soft_hmac_sign(void **s, CK_BYTE_PTR pData, CK_ULONG ulDataLen,
CK_BYTE_PTR pSignature, CK_ULONG_PTR pulSignatureLen, int opflag)
{
CK_RV rv;
soft_session_t *session_p;
CK_BYTE hmac[SHA512_DIGEST_LENGTH]; /* use the maximum size */
session_p = *((soft_session_t **)s);
if (session_p == NULL || !(opflag & OP_SINGLE || opflag & OP_FINAL)) {
return (CKR_ARGUMENTS_BAD);
}
rv = soft_hmac_sign_verify_common(session_p, pData, ulDataLen,
(pSignature != NULL ? hmac : NULL), pulSignatureLen, B_TRUE);
if ((rv == CKR_OK) && (pSignature != NULL)) {
(void) memcpy(pSignature, hmac, *pulSignatureLen);
}
return (rv);
}
/*
* opflag specifies whether this is a final or single.
*/
CK_RV
do_soft_hmac_verify(void **s, CK_BYTE_PTR pData, CK_ULONG ulDataLen,
CK_BYTE_PTR pSignature, CK_ULONG ulSignatureLen, int opflag)
{
CK_RV rv;
CK_ULONG len;
soft_session_t *session_p;
soft_hmac_ctx_t *hmac_ctx;
CK_BYTE hmac[SHA512_DIGEST_LENGTH]; /* use the maximum size */
session_p = *((soft_session_t **)s);
if (session_p == NULL || !(opflag & OP_SINGLE || opflag & OP_FINAL)) {
return (CKR_ARGUMENTS_BAD);
}
hmac_ctx = (soft_hmac_ctx_t *)session_p->verify.context;
len = hmac_ctx->hmac_len;
rv = soft_hmac_sign_verify_common(session_p, pData,
ulDataLen, hmac, &len, B_FALSE);
if (rv == CKR_OK) {
if (len != ulSignatureLen) {
rv = CKR_SIGNATURE_LEN_RANGE;
}
if (memcmp(hmac, pSignature, len) != 0) {
rv = CKR_SIGNATURE_INVALID;
}
}
return (rv);
}
/*
* Helper routine to handle the case when the ctx is abandoned.
*/
void
free_soft_ctx(void *s, int opflag)
{
soft_session_t *session_p;
session_p = (soft_session_t *)s;
if (session_p == NULL)
return;
if (opflag & OP_SIGN) {
freezero(session_p->sign.context,
sizeof (soft_hmac_ctx_t));
session_p->sign.context = NULL;
session_p->sign.flags = 0;
} else if (opflag & OP_VERIFY) {
freezero(session_p->verify.context,
sizeof (soft_hmac_ctx_t));
session_p->verify.context = NULL;
session_p->verify.flags = 0;
} else {
free(session_p->digest.context);
session_p->digest.context = NULL;
session_p->digest.flags = 0;
}
}
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