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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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <security/cryptoki.h>
#include <security/pkcs11.h>
#include <arcfour.h>
#include "softSession.h"
#include "softObject.h"
#include "softCrypt.h"
/*
* Allocate the ARCFour key stream for the active encryption or decryption
* operation.
*/
CK_RV
soft_arcfour_crypt_init(soft_session_t *session_p, CK_MECHANISM_PTR pMechanism,
soft_object_t *key_p, boolean_t encrypt)
{
uint8_t *keyval;
int keyvallen;
ARCFour_key *keystream;
crypto_active_op_t *active_op;
#ifdef __sparcv9
/* LINTED */
keyvallen = (int)OBJ_SEC_VALUE_LEN(key_p);
#else /* !__sparcv9 */
keyvallen = OBJ_SEC_VALUE_LEN(key_p);
#endif /* __sparcv9 */
if ((keyvallen < ARCFOUR_MIN_KEY_BYTES) ||
(keyvallen > ARCFOUR_MAX_KEY_BYTES))
return (CKR_KEY_SIZE_RANGE);
keyval = OBJ_SEC_VALUE(key_p);
if (keyval == NULL)
return (CKR_KEY_TYPE_INCONSISTENT);
keystream = malloc(sizeof (ARCFour_key));
if (keystream == NULL) {
return (CKR_HOST_MEMORY);
}
arcfour_key_init(keystream, keyval, keyvallen);
(void) pthread_mutex_lock(&session_p->session_mutex);
active_op = (encrypt) ? &(session_p->encrypt) : &(session_p->decrypt);
active_op->context = keystream;
active_op->mech.mechanism = pMechanism->mechanism;
(void) pthread_mutex_unlock(&session_p->session_mutex);
return (CKR_OK);
}
/*
* soft_arcfour_crypt()
*
* Arguments:
* active_op: pointer to the active operation in the session
* input: pointer to the input data to be transformed
* inputlen: length of the input.
* output: pointer to the output storage.
* outputlenp: pointer to the length of the output
*
* Description:
* Encrypts/Decrypts the 'input' and gets the result in the 'output'
*
* Returns:
* CKR_OK: success
* CKR_BUFFER_TOO_SMALL: the output buffer provided by application
* is too small
* CKR_ARGUMENTS_BAD: keystream is a NULL pointer, cipher is not
* initialized
*/
CK_RV
soft_arcfour_crypt(crypto_active_op_t *active_op, CK_BYTE_PTR input,
CK_ULONG inputlen, CK_BYTE_PTR output, CK_ULONG_PTR outputlenp)
{
ARCFour_key *keystream = active_op->context;
if (keystream == NULL) {
return (CKR_ARGUMENTS_BAD);
}
/*
* If application asks for the length of the output buffer
* to hold the transformed text
*/
if (output == NULL) {
*outputlenp = inputlen;
return (CKR_OK);
}
/* Is the application-supplied buffer large enough? */
if (*outputlenp < inputlen) {
*outputlenp = inputlen;
return (CKR_BUFFER_TOO_SMALL);
}
arcfour_crypt(keystream, input, output, inputlen);
*outputlenp = inputlen;
return (CKR_OK);
}
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