void AES_CMAC_Update(AES_CMAC_CTX *ctx, const u_int8_t *data, u_int len)
{
u_int mlen;
unsigned char in[16];
if (ctx->M_n > 0)
{
mlen = MIN(16 - ctx->M_n, len);
memcpy1(ctx->M_last + ctx->M_n, data, mlen);
ctx->M_n += mlen;
if (ctx->M_n < 16 || len == mlen)
return;
XOR(ctx->M_last, ctx->X);
// rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
aes_encrypt( ctx->X, ctx->X, &ctx->rijndael);
data += mlen;
len -= mlen;
}
while (len > 16)
{ /* not last block */
XOR(data, ctx->X);
// rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
aes_encrypt( in, in, &ctx->rijndael);
memcpy1(&ctx->X[0], in, 16);
data += 16;
len -= 16;
}
/* potential last block, save it */
memcpy1(ctx->M_last, data, len);
ctx->M_n = len;
}
void f5(void)
{
char buf[10];
memset((void *)0x100000000ULL, 0, 0x1000);
memcpy((char *)NULL + 0x10000, buf, 0x10);
memcpy1((char *)NULL + 0x10000, buf, 0x10); // expected-error {{argument value 4 is outside the valid range [0, 3]}}
}
void AES_CMAC_Final(u_int8_t digest[AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX *ctx)
{
u_int8_t K[16];
unsigned char in[16];
/* generate subkey K1 */
memset1(K, '\0', 16);
// rijndael_encrypt(&ctx->rijndael, K, K);
aes_encrypt( K, K, &ctx->rijndael);
if (K[0] & 0x80)
{
LSHIFT(K, K);
K[15] ^= 0x87;
} else
LSHIFT(K, K);
if (ctx->M_n == 16)
{
/* last block was a complete block */
XOR(K, ctx->M_last);
} else {
/* generate subkey K2 */
if (K[0] & 0x80)
{
LSHIFT(K, K);
K[15] ^= 0x87;
} else
LSHIFT(K, K);
/* padding(M_last) */
ctx->M_last[ctx->M_n] = 0x80;
while (++ctx->M_n < 16)
ctx->M_last[ctx->M_n] = 0;
XOR(K, ctx->M_last);
}
XOR(ctx->M_last, ctx->X);
// rijndael_encrypt(&ctx->rijndael, ctx->X, digest);
memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
aes_encrypt(in, digest, &ctx->rijndael);
memset1(K, 0, sizeof K);
}
void mkfs()
{
MESSAGE driver_msg;
int i, j;
int bits_per_sect = SECTOR_SIZE * 8; /* 8 bits per byte */
struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
fsbuf = (u8 *)memman_alloc(memman,FSBUF_SIZE);
/* get the geometry of ROOTDEV */
struct part_info geo;
//driver_msg.type = DEV_IOCTL;
//driver_msg.DEVICE = MINOR(ROOT_DEV);
//driver_msg.REQUEST = DIOCTL_GET_GEO;
//driver_msg.BUF = &geo;
//driver_msg.PROC_NR = 0; //TASK_FS
//hd_ioctl(&driver_msg);
geo.size = 20097;
debug("dev size: 0x%x sectors", geo.size);
/************************/
/* super block */
/************************/
struct super_block sb;
sb.magic = MAGIC_V1;
sb.nr_inodes = bits_per_sect; //512 * 8 = 4096个i_node
sb.nr_inode_sects = sb.nr_inodes * INODE_SIZE / SECTOR_SIZE; //i_node所占用的扇区数=4096 * 32 / 512 = 32
sb.nr_sects = geo.size; /* partition size in sector， 这个分区总共有多少个扇区 */
sb.nr_imap_sects = 1; //inode-map所占用的扇区数
sb.nr_smap_sects = sb.nr_sects / bits_per_sect + 1; //secotr-map所占用的扇区数
sb.n_1st_sect = 1 + 1 + /* boot sector & super block */
sb.nr_imap_sects + sb.nr_smap_sects + sb.nr_inode_sects; //数据区的第一个扇区编号
sb.root_inode = ROOT_INODE; //root directory占用的inode编号
sb.inode_size = INODE_SIZE;
struct inode x;
sb.inode_isize_off= (int)&x.i_size - (int)&x; //i_size在i-node结构中的偏移
sb.inode_start_off= (int)&x.i_start_sect - (int)&x; //start_sect在i-node结构中的偏移
sb.dir_ent_size = DIR_ENTRY_SIZE; //DIR_ENTRY结构的大小
struct dir_entry de;
sb.dir_ent_inode_off = (int)&de.inode_nr - (int)&de; //inode_nr在dir_entry中的偏移
sb.dir_ent_fname_off = (int)&de.name - (int)&de; //name在dir_entry中的偏移
memset1(fsbuf, 0x90, SECTOR_SIZE);
memcpy1(fsbuf, &sb, SUPER_BLOCK_SIZE);
debug("sb.n_1st_sect = %d",sb.n_1st_sect);
/* write the super block */
WR_SECT(ROOT_DEV, 1);
/************************/
/* inode map */
/************************/
memset1(fsbuf, 0, SECTOR_SIZE);
for (i = 0; i < (NR_CONSOLES + 2); i++)
fsbuf[0] |= 1 << i;
assert(fsbuf[0] == 0x1F);/* 0001 1111 :
// * | ||||
// * | |||`--- bit 0 : reserved
// * | ||`---- bit 1 : the first inode,
// * | || which indicates `/'
// * | |`----- bit 2 : /dev_tty0
// * | `------ bit 3 : /dev_tty1
// * `-------- bit 4 : /dev_tty2
// */
WR_SECT(ROOT_DEV, 2);
/************************/
/* secter map */
/************************/
memset1(fsbuf, 0, SECTOR_SIZE);
int nr_sects = NR_DEFAULT_FILE_SECTS + 1;
/* ~~~~~~~~~~~~~~~~~~~|~ |
* | `--- bit 0 is reserved
* `-------- for `/'
*/
for (i = 0; i < nr_sects / 8; i++)
fsbuf[i] = 0xFF;
for (j = 0; j < nr_sects % 8; j++)
fsbuf[i] |= (1 << j);
WR_SECT(ROOT_DEV, 2 + sb.nr_imap_sects);
/* zeromemory the rest sector-map */
memset1(fsbuf, 0, SECTOR_SIZE);
for (i = 1; i < sb.nr_smap_sects; i++)
WR_SECT(ROOT_DEV, 2 + sb.nr_imap_sects + i);
/************************/
/* inodes */
/************************/
/* inode of `/' */
memset1(fsbuf, 0, SECTOR_SIZE);
struct inode * pi = (struct inode*)fsbuf;
pi->i_mode = I_DIRECTORY;
pi->i_size = DIR_ENTRY_SIZE * 4; /* 4 files:
* `.',
* `dev_tty0', `dev_tty1', `dev_tty2',
*/
pi->i_start_sect = sb.n_1st_sect;
pi->i_nr_sects = NR_DEFAULT_FILE_SECTS;
/* inode of `/dev_tty0~2' */
for (i = 0; i < NR_CONSOLES; i++) {
pi = (struct inode*)(fsbuf + (INODE_SIZE * (i + 1)));
pi->i_mode = I_CHAR_SPECIAL;
pi->i_size = 0;
pi->i_start_sect = MAKE_DEV(DEV_CHAR_TTY, i);
debug("pi->i_start_sect = %d",MAKE_DEV(DEV_CHAR_TTY, i));
pi->i_nr_sects = 0;
}
WR_SECT(ROOT_DEV, 2 + sb.nr_imap_sects + sb.nr_smap_sects);
/************************/
/* `/' */
/************************/
memset1(fsbuf, 0, SECTOR_SIZE);
struct dir_entry * pde = (struct dir_entry *)fsbuf;
pde->inode_nr = 1;
strcpy(pde->name, ".");
/* dir entries of `/dev_tty0~2' */
for (i = 0; i < NR_CONSOLES; i++) {
pde++;
pde->inode_nr = i + 2; /* dev_tty0's inode_nr is 2 */
sprintf(pde->name, "dev_tty%d", i);
debug("pde->inode_nr = %d",pde->inode_nr);
debug("pde->name = %s",pde->name);
}
WR_SECT(ROOT_DEV, sb.n_1st_sect);
}
