/*
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <pthread.h>
#include <security/cryptoki.h>
#include "softGlobal.h"
#include "softSession.h"
#include "softObject.h"
#include "softOps.h"
CK_RV
C_EncryptInit(CK_SESSION_HANDLE hSession, CK_MECHANISM_PTR pMechanism,
CK_OBJECT_HANDLE hKey)
{
CK_RV rv;
soft_session_t *session_p;
soft_object_t *key_p;
boolean_t lock_held = B_FALSE;
if (!softtoken_initialized)
return (CKR_CRYPTOKI_NOT_INITIALIZED);
/* Obtain the session pointer. */
rv = handle2session(hSession, &session_p);
if (rv != CKR_OK)
return (rv);
if (pMechanism == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
/* Obtain the object pointer. */
HANDLE2OBJECT(hKey, key_p, rv);
if (rv != CKR_OK)
goto clean_exit;
/* Check to see if key object allows for encryption. */
if (!(key_p->bool_attr_mask & ENCRYPT_BOOL_ON)) {
rv = CKR_KEY_FUNCTION_NOT_PERMITTED;
goto clean_exit1;
}
(void) pthread_mutex_lock(&session_p->session_mutex);
lock_held = B_TRUE;
/* Check to see if encrypt operation is already active. */
if (session_p->encrypt.flags & CRYPTO_OPERATION_ACTIVE) {
/* free the memory to avoid memory leak */
soft_crypt_cleanup(session_p, B_TRUE, lock_held);
}
/*
* This active flag will remain ON until application calls either
* C_Encrypt or C_EncryptFinal to actually obtain the final piece
* of ciphertext.
*/
session_p->encrypt.flags = CRYPTO_OPERATION_ACTIVE;
(void) pthread_mutex_unlock(&session_p->session_mutex);
lock_held = B_FALSE;
rv = soft_encrypt_init(session_p, pMechanism, key_p);
if (rv != CKR_OK) {
(void) pthread_mutex_lock(&session_p->session_mutex);
session_p->encrypt.flags &= ~CRYPTO_OPERATION_ACTIVE;
lock_held = B_TRUE;
}
clean_exit1:
OBJ_REFRELE(key_p);
clean_exit:
SES_REFRELE(session_p, lock_held);
return (rv);
}
CK_RV
C_Encrypt(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pData, CK_ULONG ulDataLen,
CK_BYTE_PTR pEncryptedData, CK_ULONG_PTR pulEncryptedDataLen)
{
CK_RV rv;
soft_session_t *session_p;
boolean_t lock_held = B_FALSE;
if (!softtoken_initialized)
return (CKR_CRYPTOKI_NOT_INITIALIZED);
/* Obtain the session pointer. */
rv = handle2session(hSession, &session_p);
if (rv != CKR_OK)
return (rv);
/*
* Only check if input buffer is null. How to handle zero input
* length depends on the mechanism in use. For secret key mechanisms,
* unpadded ones yield zero length output, but padded ones always
* result in greater than zero length output.
*/
if (pData == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
/*
* Only check if pulEncryptedDataLen is NULL.
* No need to check if pEncryptedData is NULL because
* application might just ask for the length of buffer to hold
* the ciphertext.
*/
if (pulEncryptedDataLen == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
(void) pthread_mutex_lock(&session_p->session_mutex);
lock_held = B_TRUE;
/* Application must call C_EncryptInit before calling C_Encrypt. */
if (!(session_p->encrypt.flags & CRYPTO_OPERATION_ACTIVE)) {
SES_REFRELE(session_p, lock_held);
return (CKR_OPERATION_NOT_INITIALIZED);
}
/*
* C_Encrypt must be called without intervening C_EncryptUpdate
* calls.
*/
if (session_p->encrypt.flags & CRYPTO_OPERATION_UPDATE) {
/*
* C_Encrypt can not be used to terminate a multi-part
* operation, so we'll leave the active encrypt operation
* flag on and let the application continue with the
* encrypt update operation.
*/
SES_REFRELE(session_p, lock_held);
return (CKR_FUNCTION_FAILED);
}
(void) pthread_mutex_unlock(&session_p->session_mutex);
lock_held = B_FALSE;
rv = soft_encrypt(session_p, pData, ulDataLen, pEncryptedData,
pulEncryptedDataLen);
if ((rv == CKR_BUFFER_TOO_SMALL) ||
(pEncryptedData == NULL && rv == CKR_OK)) {
/*
* We will not terminate the active encrypt operation flag,
* when the application-supplied buffer is too small, or
* the application asks for the length of buffer to hold
* the ciphertext.
*/
SES_REFRELE(session_p, lock_held);
return (rv);
}
clean_exit:
/* Clear context, free key, and release session counter */
soft_crypt_cleanup(session_p, B_TRUE, B_FALSE);
return (rv);
}
CK_RV
C_EncryptUpdate(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pPart,
CK_ULONG ulPartLen, CK_BYTE_PTR pEncryptedPart,
CK_ULONG_PTR pulEncryptedPartLen)
{
CK_RV rv;
soft_session_t *session_p;
boolean_t lock_held = B_FALSE;
if (!softtoken_initialized)
return (CKR_CRYPTOKI_NOT_INITIALIZED);
/* Obtain the session pointer. */
rv = handle2session(hSession, &session_p);
if (rv != CKR_OK)
return (rv);
/*
* Only check if input buffer is null. How to handle zero input
* length depends on the mechanism in use. For secret key mechanisms,
* unpadded ones yeild zero length output, but padded ones always
* result in greater than zero length output.
*/
if (pPart == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
/*
* Only check if pulEncryptedPartLen is NULL.
* No need to check if pEncryptedPart is NULL because
* application might just ask for the length of buffer to hold
* the ciphertext.
*/
if (pulEncryptedPartLen == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
(void) pthread_mutex_lock(&session_p->session_mutex);
lock_held = B_TRUE;
/*
* Application must call C_EncryptInit before calling
* C_EncryptUpdate.
*/
if (!(session_p->encrypt.flags & CRYPTO_OPERATION_ACTIVE)) {
SES_REFRELE(session_p, lock_held);
return (CKR_OPERATION_NOT_INITIALIZED);
}
session_p->encrypt.flags |= CRYPTO_OPERATION_UPDATE;
(void) pthread_mutex_unlock(&session_p->session_mutex);
lock_held = B_FALSE;
rv = soft_encrypt_update(session_p, pPart, ulPartLen,
pEncryptedPart, pulEncryptedPartLen);
/*
* If CKR_OK or CKR_BUFFER_TOO_SMALL, don't terminate the
* current encryption operation.
*/
if ((rv == CKR_OK) || (rv == CKR_BUFFER_TOO_SMALL)) {
SES_REFRELE(session_p, lock_held);
return (rv);
}
clean_exit:
/*
* After an error occurred, terminate the current encrypt
* operation by resetting the active and update flags.
*/
soft_crypt_cleanup(session_p, B_TRUE, lock_held);
return (rv);
}
CK_RV
C_EncryptFinal(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pLastEncryptedPart,
CK_ULONG_PTR pulLastEncryptedPartLen)
{
CK_RV rv;
soft_session_t *session_p;
boolean_t lock_held = B_FALSE;
if (!softtoken_initialized)
return (CKR_CRYPTOKI_NOT_INITIALIZED);
/* Obtain the session pointer. */
rv = handle2session(hSession, &session_p);
if (rv != CKR_OK)
return (rv);
if (pulLastEncryptedPartLen == NULL) {
rv = CKR_ARGUMENTS_BAD;
goto clean_exit;
}
(void) pthread_mutex_lock(&session_p->session_mutex);
lock_held = B_TRUE;
/*
* Application must call C_EncryptInit before calling
* C_EncryptFinal.
*/
if (!(session_p->encrypt.flags & CRYPTO_OPERATION_ACTIVE)) {
SES_REFRELE(session_p, lock_held);
return (CKR_OPERATION_NOT_INITIALIZED);
}
(void) pthread_mutex_unlock(&session_p->session_mutex);
lock_held = B_FALSE;
rv = soft_encrypt_final(session_p, pLastEncryptedPart,
pulLastEncryptedPartLen);
if ((rv == CKR_BUFFER_TOO_SMALL) ||
(pLastEncryptedPart == NULL && rv == CKR_OK)) {
/*
* We will not terminate the active encrypt operation flag,
* when the application-supplied buffer is too small, or
* the application asks for the length of buffer to hold
* the ciphertext.
*/
SES_REFRELE(session_p, lock_held);
return (rv);
}
/* Terminates the active encrypt operation. */
(void) pthread_mutex_lock(&session_p->session_mutex);
session_p->encrypt.flags = 0;
lock_held = B_TRUE;
SES_REFRELE(session_p, lock_held);
return (rv);
clean_exit:
/* Terminates the active encrypt operation. */
soft_crypt_cleanup(session_p, B_TRUE, lock_held);
return (rv);
}