/*
* Copyright (c) 2018 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <crypto/cryptodev.h>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define TEST_NAME "LIBBSD CRYPTO 1"
#define KEY_LENGTH 16
typedef struct {
int dev_fd;
int session_fd;
struct session2_op session;
} test_context;
static test_context test_instance;
/* Test data obtained from http://cryptodev-linux.org/ */
static const char iv[AES_BLOCK_LEN];
static const char key_0[KEY_LENGTH] = { 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const char plaintext_0[AES_BLOCK_LEN];
static const char ciphertext_0[AES_BLOCK_LEN] = { 0xdf, 0x55, 0x6a, 0x33, 0x43,
0x8d, 0xb8, 0x7b, 0xc4, 0x1b, 0x17, 0x52, 0xc5, 0x5e, 0x5e, 0x49 };
static const char key_1[KEY_LENGTH];
static const char plaintext_1[AES_BLOCK_LEN] = { 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00 };
static const char ciphertext_1[AES_BLOCK_LEN] = { 0xb7, 0x97, 0x2b, 0x39, 0x41,
0xc4, 0x4b, 0x90, 0xaf, 0xa7, 0xb2, 0x64, 0xbf, 0xba, 0x73, 0x87 };
static void
aes_session_create(test_context *ctx, const void *key, size_t keylen)
{
int rv;
rv = ioctl(ctx->dev_fd, CRIOGET, &ctx->session_fd);
assert(rv == 0);
memset(&ctx->session, 0, sizeof(ctx->session));
ctx->session.cipher = CRYPTO_AES_CBC;
ctx->session.key = (caddr_t)key;
ctx->session.keylen = (u_int32_t)keylen;
ctx->session.crid = CRYPTO_FLAG_HARDWARE | CRYPTO_FLAG_SOFTWARE;
rv = ioctl(ctx->session_fd, CIOCGSESSION2, &ctx->session);
assert(rv == 0);
}
static void
aes_session_destroy(test_context *ctx)
{
int rv;
rv = ioctl(ctx->session_fd, CIOCFSESSION, &ctx->session.ses);
assert(rv == 0);
rv = close(ctx->session_fd);
assert(rv == 0);
}
static void
aes_encrypt(const test_context *ctx, const void *iv, const void *plaintext,
void *ciphertext, size_t len)
{
struct crypt_op op;
int rv;
memset(&op, 0, sizeof(op));
op.op = COP_ENCRYPT;
op.ses = ctx->session.ses;
op.len = (u_int)len;
op.src = __DECONST(void *, plaintext);
op.dst = ciphertext;
op.iv = __DECONST(void *, iv);
rv = ioctl(ctx->session_fd, CIOCCRYPT, &op);
assert(rv == 0);
}
static void
aes_decrypt(const test_context *ctx, const void *iv, const void *ciphertext,
void *plaintext, size_t len)
{
struct crypt_op op;
int rv;
memset(&op, 0, sizeof(op));
op.op = COP_DECRYPT;
op.ses = ctx->session.ses;
op.len = (u_int)len;
op.src = __DECONST(void *, ciphertext);
op.dst = plaintext;
op.iv = __DECONST(void *, iv);
rv = ioctl(ctx->session_fd, CIOCCRYPT, &op);
assert(rv == 0);
}
static void
aes_test(test_context *ctx, const char *key, const char *plaintext,
const char *expected_ciphertext)
{
char ciphertext[AES_BLOCK_LEN];
char decrypted_ciphertext[AES_BLOCK_LEN];
aes_session_create(ctx, key, KEY_LENGTH);
memset(ciphertext, 0xff, AES_BLOCK_LEN);
aes_encrypt(ctx, iv, plaintext, ciphertext, AES_BLOCK_LEN);
assert(memcmp(ciphertext, expected_ciphertext, AES_BLOCK_LEN) == 0);
memset(decrypted_ciphertext, 0xff, AES_BLOCK_LEN);
aes_decrypt(ctx, iv, ciphertext, decrypted_ciphertext, AES_BLOCK_LEN);
assert(memcmp(decrypted_ciphertext, plaintext, AES_BLOCK_LEN) == 0);
aes_session_destroy(ctx);
}
static void
test_main(void)
{
test_context *ctx;
int allow;
int rv;
ctx = &test_instance;
allow = 1;
rv = sysctlbyname("kern.cryptodevallowsoft", NULL, NULL, &allow,
sizeof(allow));
assert(rv == 0);
ctx->dev_fd = open("/dev/crypto", O_RDWR);
assert(ctx->dev_fd >= 0);
aes_test(ctx, key_0, plaintext_0, ciphertext_0);
aes_test(ctx, key_1, plaintext_1, ciphertext_1);
rv = close(ctx->dev_fd);
assert(rv == 0);
exit(0);
}
#include <rtems/bsd/bsd.h>
#include <machine/rtems-bsd-nexus-bus.h>
SYSINIT_MODULE_REFERENCE(cryptodev);
RTEMS_BSD_DEFINE_NEXUS_DEVICE(cryptosoft, 0, 0, NULL);
#include <rtems/bsd/test/default-init.h>
