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perform.c
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/*
Copyright 2009-2017 Luigi Auriemma
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
http://www.gnu.org/licenses/gpl-2.0.txt
*/
// QuickBMS perform* encryption and compression operations
#define string_to_execute_VAR (1 << 0)
#define string_to_execute_INPUT (1 << 1)
#define string_to_execute_INPUT_SIZE (1 << 2)
#define string_to_execute_OUTPUT (1 << 3)
#define string_to_execute_OUTPUT_SIZE (1 << 4)
#define string_to_execute_REDIRECT (1 << 5)
#define string_to_execute_MULTI (1 << 6)
u8 *string_to_execute(u8 *str, u8 *INPUT, u8 *INPUT_SIZE, u8 *OUTPUT, u8 *OUTPUT_SIZE, int *res, int exec_checks, int will_be_reparsed_by_bms) {
#define string_to_execute_realloc(X) \
tmp = X; \
if((exesz + tmp) >= totsz) { \
totsz = exesz + tmp + 1024; \
exe = realloc(exe, totsz + 1); \
if(!exe) STD_ERR(QUICKBMS_ERROR_MEMORY); \
}
int tmp,
idx,
exesz = 0,
totsz = 0;
u8 *VAR,
*exe,
*p,
*l,
*limit;
if(!str) return NULL;
// do NOT modify the content of str
if(res) *res = 0;
totsz = strlen(str) + 1024;
exe = malloc(totsz + 1);
if(!exe) STD_ERR(QUICKBMS_ERROR_MEMORY);
exe[0] = 0;
limit = str + strlen(str);
for(p = str; *p && (p < limit);) {
if((p[0] == '>') || (p[0] == '<')) {
if(res) *res |= string_to_execute_REDIRECT;
}
if((p[0] == ';') || (p[0] == '&') || (p[0] == '|')) {
if(res) *res |= string_to_execute_MULTI;
}
#define string_to_execute_assign(X,Y) \
if(X) { \
if(exec_checks && mystrchrs(X, "\"\'><;&|")) { \
} else { \
string_to_execute_realloc(1 + strlen(X) + 1) \
if(will_be_reparsed_by_bms || need_quote_delimiters(X)) { \
exesz += sprintf(exe + exesz, "\"%s\"", X); \
} else { \
exesz += sprintf(exe + exesz, "%s", X); \
} \
} \
} \
p += Y; \
if(res) *res |= string_to_execute_##X;
if(p[0] == '%') {
p++;
if(p[1] == '%') continue;
l = strchr(p, '%');
if(!l) continue;
idx = get_var_from_name(p, l - p);
if(idx < 0) continue;
VAR = get_var(idx);
if(!VAR) continue;
string_to_execute_assign(VAR, (l - p) + 1)
} else if(!strnicmp(p, "#INPUT#", 7)) {
string_to_execute_assign(INPUT, 7)
} else if(!strnicmp(p, "#INPUT_SIZE#", 12)) {
string_to_execute_assign(INPUT_SIZE, 12)
} else if(!strnicmp(p, "#OUTPUT#", 8)) {
string_to_execute_assign(OUTPUT, 8)
} else if(!strnicmp(p, "#OUTPUT_SIZE#", 13)) {
string_to_execute_assign(OUTPUT_SIZE, 13)
} else {
string_to_execute_realloc(1)
exe[exesz++] = *p;
p++;
}
}
exe = realloc(exe, exesz + 1);
if(!exe) STD_ERR(QUICKBMS_ERROR_MEMORY);
exe[exesz] = 0;
return(exe);
}
u8 *quickbms_execute_pipe_path(u8 *mycmd) {
int len,
tmp,
quote = 0,
new_exelen;
u8 *old_path,
*old_exe,
*new_exe,
*p,
*l;
for(p = mycmd; *p && (*p <= ' '); p++);
l = NULL;
if(*p == '\"') l = strchr(++p, '\"');
else if(*p == '\'') l = strchr(++p, '\'');
if(!l) for(l = p; *l && (*l > ' '); l++);
tmp = *l;
*l = 0;
old_path = mystrdup_simple(p);
len = strlen(old_path);
#ifdef WIN32
if((len < 4) || stricmp(old_path + len - 4, ".exe")) {
old_path = realloc(old_path, len + 4 + 1);
if(!old_path) STD_ERR(QUICKBMS_ERROR_MEMORY);
strcpy(old_path + len, ".exe");
}
#endif
old_exe = get_filename(old_path);
*l = tmp;
if(*l) l++;
if((old_path[0] == '/') || strchr(old_path, ':')) {
// do nothing, it's an absolute path
} else {
new_exe = quickbms_path_open(old_exe);
if(new_exe) {
if(mystrchrs(new_exe, " \t")) quote = 1;
tmp = l - mycmd;
len = strlen(l);
new_exelen = strlen(new_exe);
mycmd = realloc(mycmd, quote + new_exelen + quote + 1 + len + 1);
if(!mycmd) STD_ERR(QUICKBMS_ERROR_MEMORY);
mymemmove(mycmd + quote + new_exelen + quote + 1, mycmd + tmp, len + 1);
p = mycmd;
if(quote) *p++ = '\"';
memcpy(p, new_exe, new_exelen);
p += new_exelen;
if(quote) *p++ = '\"';
*p++ = ' ';
FREE(new_exe)
} else {
// return the original command, it will be found automatically by system()
}
}
FREE(old_path)
return(mycmd);
}
// it's necessary to use real files because
// the executed command may not support sequential data (like pipes)
// so I MUST guarantee the 100% of compatibility even if it's slower
// and occupy more resources
int quickbms_execute_pipe(u8 *cmdstr, u8 *in, int insz, u8 **out, int outsz, u8 *my_fname) {
FILE *fd;
int res,
t,
size = -1;
u8 *in_fname = NULL,
*out_fname = NULL,
*mycmd = NULL;
if(!cmdstr) return -1;
if(!in) {
if(!my_fname) return -1;
}
if(insz < 0) return -1;
if(!enable_execute_pipe) {
fprintf(stderr, "\n"
"- the script has requested to run an executable:\n"
" %s\n"
"\n"
" NOTE THAT I ASK THIS CONFIRMATION ONLY NOW SO CHECK THE SCRIPT BECAUSE YOU\n"
" WILL BE NO LONGER PROMPTED TO CONFIRM THE NEXT USAGE OF THE EXECUTE COMMAND!\n"
" THIS FEATURE IS DANGEROUS SO BE SURE TO KNOW WHAT YOU ARE DOING\n"
"\n"
" do you want to continue (y/N)? ",
cmdstr);
if(get_yesno(NULL) != 'y') myexit(QUICKBMS_ERROR_USER);
// *fixed, added warning*
// do NOT enable enable_execute_pipe because if we have
// multiple comtype then only the first one will be
// visualized and the others may be malicious!
enable_execute_pipe = 1;
}
if(!my_fname) {
quickbms_tmpname(&in_fname, NULL, "tmp");
mydump(in_fname, in, insz);
quickbms_tmpname(&out_fname, NULL, "tmp");
}
// I'm forced to use system() because it's possible that
// we have a command which uses stdout and so I must grant
// it's compatibility... yes I know that it's a big security
// problem!
mycmd = string_to_execute(cmdstr,
my_fname ? my_fname : in_fname,
NULL, // ???
my_fname ? my_fname : out_fname,
NULL, // ???
&res, 1,
0);
mycmd = quickbms_execute_pipe_path(mycmd);
invalid_chars_to_spaces(mycmd);
#ifdef WIN32
t = strlen(mycmd);
mycmd = realloc(mycmd, 1 + t + 1);
if(!mycmd) STD_ERR(QUICKBMS_ERROR_MEMORY);
mymemmove(mycmd + 1, mycmd, t + 1);
mycmd[0] = '@'; // crazy but necessary!
#endif
fprintf(stderr, "- execute:\n %s\n", mycmd);
system(mycmd); // do NOT check the return value
FREE(mycmd);
fd = NULL;
if(res & string_to_execute_OUTPUT) {
if(out_fname) {
fd = xfopen(out_fname, "rb"); // check if it exists
if(!fd) goto quit;
}
} else if(res & string_to_execute_INPUT) {
if(in_fname) {
fd = xfopen(in_fname, "rb"); // check if it exists
if(!fd) goto quit;
}
}
if(fd) {
fseek(fd, 0, SEEK_END);
size = ftell(fd);
fseek(fd, 0, SEEK_SET);
if(out) {
if(outsz < size) {
outsz = size;
if(size == (u_int)-1LL) ALLOC_ERR;
*out = realloc(*out, size + 1);
if(!*out) STD_ERR(QUICKBMS_ERROR_MEMORY);
(*out)[size] = 0;
}
size = fread(*out, 1, size, fd);
} else {
if(insz < size) size = insz;
size = fread(in, 1, size, fd);
}
FCLOSE(fd);
}
quit:
if(!my_fname) {
unlink(in_fname);
FREE(in_fname)
unlink(out_fname);
FREE(out_fname)
}
return size;
}
int parse_bms(FILE *fds, u8 *inputs, int cmd, int eol_mode);
int CMD_CallDLL_func(int cmd, u8 *input, int input_size, u8 *output, int output_size);
int quickbms_calldll_pipe(u8 *cmdstr, u8 *in, int insz, u8 *out, int outsz) {
int cmd,
ret;
u8 *calldll_cmd = NULL,
*p;
if(!cmdstr) return -1;
cmdstr = skip_delimit(cmdstr);
p = mystrchrs(cmdstr, " \t");
if(!p) return -1;
*p = 0;
if(!stricmp(cmdstr, "calldll")) cmdstr = p + 1;
*p = ' '; // restore the NULLed char
p = malloc(32 + strlen(cmdstr) + 1);
if(!p) STD_ERR(QUICKBMS_ERROR_MEMORY);
sprintf(p, "calldll %s", cmdstr);
// #INPUT# -> "#INPUT#" to avoid the parse_bms comments
if(in && out) calldll_cmd = string_to_execute(p, "#INPUT#", "#INPUT_SIZE#", "#OUTPUT#","#OUTPUT_SIZE#", &ret, 0, 1);
else if(!in && out) calldll_cmd = string_to_execute(p, "#OUTPUT#","#OUTPUT_SIZE#", "#OUTPUT#","#OUTPUT_SIZE#", &ret, 0, 1);
else if(in && !out) calldll_cmd = string_to_execute(p, "#INPUT#", "#INPUT_SIZE#", "#INPUT#", "#INPUT_SIZE#", &ret, 0, 1);
else calldll_cmd = mystrdup_simple(p);
FREE(p);
for(cmd = 0; CMD.type != CMD_NONE; cmd++);
cmd++;
//if((cmd + 1) < MAX_CMDS) // not needed because parse_bms already does this check
parse_bms(NULL, calldll_cmd, cmd, 0);
ret = CMD_CallDLL_func(cmd, in, insz, out, outsz);
if(ret & string_to_execute_INPUT) {
if(!(ret & string_to_execute_OUTPUT)) {
if(out) {
if(outsz > insz) outsz = insz;
memcpy(out, in, outsz);
}
}
}
FREE(calldll_cmd);
return(outsz);
}
ICE_KEY *do_ice_key(u8 *key, int keysz, int icecrypt) {
ICE_KEY *ik;
int i = 0,
k,
level = 0;
u8 buf[1024];
if(keysz == 8) {
level = 0;
} else if(!(keysz % 16)) {
level = keysz / 16;
} else {
fprintf(stderr, "\nError: your ICE key has an incorrect size\n");
myexit(QUICKBMS_ERROR_ENCRYPTION);
}
if(icecrypt) {
memset(buf, 0, sizeof(buf));
for(k = 0; k < keysz; k++) {
u8 c = key[k] & 0x7f;
int idx = i / 8;
int bit = i & 7;
if (bit == 0) {
buf[idx] = (c << 1);
} else if (bit == 1) {
buf[idx] |= c;
} else {
buf[idx] |= (c >> (bit - 1));
buf[idx + 1] = (c << (9 - bit));
}
i += 7;
}
key = buf;
}
ik = ice_key_create(level);
if(!ik) return NULL;
ice_key_set(ik, key);
return(ik);
}
#ifndef DISABLE_MCRYPT
MCRYPT quick_mcrypt_check(u8 *type) {
u8 tmp[64],
*p,
*mode,
*algo;
if(!type) type = "";
mystrcpy(tmp, type, sizeof(tmp));
// myisalnum gets also the '-' which is a perfect thing
// NEVER use '-' as delimiter because "rijndael-*" use it
algo = tmp;
if(!strnicmp(tmp, "mcrypt", 6)) {
for(algo = tmp + 6; *algo; algo++) {
if(myisalnum(*algo)) break;
}
}
p = mystrchrs(algo, "_, ");
if(p) {
*p = 0;
mode = p + 1;
} else {
mode = MCRYPT_ECB;
}
return(mcrypt_module_open(algo, NULL, mode, NULL));
}
#endif
#ifndef DISABLE_TOMCRYPT
// nonce:001122334455667788 header:aabbccddeeff0011 ivec:FFff00112233AAbb tweak:0011223344
void tomcrypt_lame_ivec(TOMCRYPT *ctx, u8 *ivec, int ivecsz) {
int t,
*y;
u8 *p,
*s,
*l,
**x,
*limit;
if(!ctx || !ivec || (ivecsz < 0)) return;
limit = ivec + ivecsz; // ivec is NULL delimited
for(p = ivec; p < limit; p = l + 1) {
while(*p && (*p <= ' ')) p++;
l = strchr(p, ' ');
if(!l) l = strchr(p, '\t');
if(!l) l = limit;
// ':' in all of the following
if((s = stristr(p, "nonce:")) || (s = stristr(p, "salt:")) ||
(s = stristr(p, "adata:")) || (s = stristr(p, "skey:")) ||
(s = stristr(p, "key2:")) || (s = stristr(p, /*salt_*/"key:"))) {
x = &ctx->nonce;
y = &ctx->noncelen;
} else if((s = stristr(p, "header:"))) {
x = &ctx->header;
y = &ctx->headerlen;
} else if((s = stristr(p, "ivec:"))) {
x = &ctx->ivec;
y = &ctx->ivecsz;
} else if((s = stristr(p, "tweak:"))) {
x = &ctx->tweak;
y = NULL;
} else {
break;
}
s = strchr(s, ':');
if(!s) break;
s++;
if(l < s) break;
*x = calloc((l - s) + 1, 1); // / 2, but it's ok (+1 is not needed)
if(!*x) STD_ERR(QUICKBMS_ERROR_MEMORY);
if(y) *y = 0;
t = unhex(s, l - s, *x, l - s);
if(t < 0) {
FREE(*x)
}
if((t >= 0) && y) *y = t;
}
if(!ctx->ivec) {
ctx->ivec = malloc(ivecsz);
if(!ctx->ivec) STD_ERR(QUICKBMS_ERROR_MEMORY);
memcpy(ctx->ivec, ivec, ivecsz);
ctx->ivecsz = ivecsz;
}
}
// badly implemented because it's intended only as a test
TOMCRYPT *tomcrypt_doit(TOMCRYPT *ctx, u8 *type, u8 *in, int insz, u8 *out, int outsz, i32 *ret) {
static int init = 0;
symmetric_ECB ecb;
symmetric_CFB cfb;
symmetric_OFB ofb;
symmetric_CBC cbc;
symmetric_CTR ctr;
symmetric_LRW lrw;
symmetric_F8 f8;
symmetric_xts xts;
long tmp;
i32 stat;
int i,
use_tomcrypt = 0;
u8 tag[64] = "",
desc[64],
*p,
*l;
ltc_mp = ltm_desc;
enum {
tomcrypt_enum_ecb,
tomcrypt_enum_cfb,
tomcrypt_enum_ofb,
tomcrypt_enum_cbc,
tomcrypt_enum_ctr,
tomcrypt_enum_lrw,
tomcrypt_enum_f8,
tomcrypt_enum_xts,
tomcrypt_enum_hmac,
tomcrypt_enum_omac,
tomcrypt_enum_pmac,
tomcrypt_enum_eax,
tomcrypt_enum_ocb3,
tomcrypt_enum_ocb,
tomcrypt_enum_ccm,
tomcrypt_enum_gcm,
tomcrypt_enum_pelican,
tomcrypt_enum_xcbc,
tomcrypt_enum_f9,
tomcrypt_enum_invalid
};
typedef struct {
int idx;
u8 *name;
u8 *type;
} quickbms_tomcrypt_t;
static int quickbms_tomcrypts = 0;
static quickbms_tomcrypt_t quickbms_tomcrypt[64];
#define TOMCRYPT_REGISTER(Z, X,Y) \
if(!init) { \
register_##Z(&X##_desc); \
quickbms_tomcrypt[quickbms_tomcrypts].idx = find_##Z(Y ? Y : #X); \
quickbms_tomcrypt[quickbms_tomcrypts].name = #X; \
quickbms_tomcrypt[quickbms_tomcrypts].type = #Z; \
quickbms_tomcrypts++; \
if(Y) { \
quickbms_tomcrypt[quickbms_tomcrypts].idx = quickbms_tomcrypt[quickbms_tomcrypts - 1].idx; \
quickbms_tomcrypt[quickbms_tomcrypts].name = Y; \
quickbms_tomcrypt[quickbms_tomcrypts].type = #Z; \
quickbms_tomcrypts++; \
} \
}
TOMCRYPT_REGISTER(cipher, blowfish, NULL)
TOMCRYPT_REGISTER(cipher, rc5, NULL)
TOMCRYPT_REGISTER(cipher, rc6, NULL)
TOMCRYPT_REGISTER(cipher, rc2, NULL)
TOMCRYPT_REGISTER(cipher, saferp, NULL)
TOMCRYPT_REGISTER(cipher, safer_k64, "safer-k64")
TOMCRYPT_REGISTER(cipher, safer_k128, "safer-k128")
TOMCRYPT_REGISTER(cipher, safer_sk64, "safer-sk64")
TOMCRYPT_REGISTER(cipher, safer_sk128, "safer-sk128")
TOMCRYPT_REGISTER(cipher, rijndael, NULL)
TOMCRYPT_REGISTER(cipher, aes, "rijndael")
TOMCRYPT_REGISTER(cipher, xtea, NULL)
TOMCRYPT_REGISTER(cipher, twofish, NULL)
TOMCRYPT_REGISTER(cipher, des, NULL)
TOMCRYPT_REGISTER(cipher, des3, "3des")
TOMCRYPT_REGISTER(cipher, cast5, NULL)
TOMCRYPT_REGISTER(cipher, noekeon, NULL)
TOMCRYPT_REGISTER(cipher, skipjack, NULL)
TOMCRYPT_REGISTER(cipher, khazad, NULL)
TOMCRYPT_REGISTER(cipher, anubis, NULL)
TOMCRYPT_REGISTER(cipher, kseed, "seed")
TOMCRYPT_REGISTER(cipher, kasumi, NULL)
TOMCRYPT_REGISTER(cipher, multi2, NULL)
TOMCRYPT_REGISTER(cipher, camellia, NULL)
TOMCRYPT_REGISTER(hash, chc, NULL)
TOMCRYPT_REGISTER(hash, whirlpool, NULL)
TOMCRYPT_REGISTER(hash, sha512, NULL)
TOMCRYPT_REGISTER(hash, sha384, NULL)
TOMCRYPT_REGISTER(hash, sha512_256, "sha512-256")
TOMCRYPT_REGISTER(hash, sha512_224, "sha512-224")
TOMCRYPT_REGISTER(hash, sha256, NULL)
TOMCRYPT_REGISTER(hash, sha224, NULL)
TOMCRYPT_REGISTER(hash, sha1, NULL)
TOMCRYPT_REGISTER(hash, md5, NULL)
TOMCRYPT_REGISTER(hash, md4, NULL)
TOMCRYPT_REGISTER(hash, md2, NULL)
TOMCRYPT_REGISTER(hash, tiger, NULL)
TOMCRYPT_REGISTER(hash, rmd128, NULL)
TOMCRYPT_REGISTER(hash, rmd160, NULL)
TOMCRYPT_REGISTER(hash, rmd256, NULL)
TOMCRYPT_REGISTER(hash, rmd320, NULL)
if(!init) init = 1;
if(type) {
mystrcpy(desc, type, sizeof(desc));
ctx = calloc(1, sizeof(TOMCRYPT));
if(!ctx) STD_ERR(QUICKBMS_ERROR_MEMORY);
ctx->idx = -1; // 0 is AES
#define TOMCRYPT_IDX(X,Y) \
else if(!stricmp(p, #X)) { \
ctx->idx = X##_idx; \
Y; \
}
for(p = desc; *p; p = l + 1) {
l = strchr(p, ' ');
if(l) *l = 0;
while(*p && (*p <= ' ')) p++;
if(!strnicmp(p, "lib", 3)) p += 3;
if(!strnicmp(p, "tomcrypt", 8)) {
use_tomcrypt = 1;
p += 8;
} else {
for(i = 0; i < quickbms_tomcrypts; i++) {
if(!stricmp(p, quickbms_tomcrypt[i].name)) {
ctx->idx = quickbms_tomcrypt[i].idx;
if(!stricmp(quickbms_tomcrypt[i].name, "cipher")) {
ctx->cipher = tomcrypt_enum_ecb;
} else if(!stricmp(quickbms_tomcrypt[i].name, "hash")) {
ctx->hash = TRUE;
}
}
}
#define TOMCRYPT_REGISTER_ENUM(X) \
else if(stristr(p, #X)) ctx->cipher = tomcrypt_enum_##X;
if(!stricmp(p, "")) {} // needed because the others are "else"
TOMCRYPT_REGISTER_ENUM(ecb)
TOMCRYPT_REGISTER_ENUM(cfb)
TOMCRYPT_REGISTER_ENUM(ofb)
TOMCRYPT_REGISTER_ENUM(cbc)
TOMCRYPT_REGISTER_ENUM(ctr)
TOMCRYPT_REGISTER_ENUM(lrw)
TOMCRYPT_REGISTER_ENUM(f8)
TOMCRYPT_REGISTER_ENUM(xts)
TOMCRYPT_REGISTER_ENUM(hmac)
TOMCRYPT_REGISTER_ENUM(omac)
TOMCRYPT_REGISTER_ENUM(pmac)
TOMCRYPT_REGISTER_ENUM(eax)
TOMCRYPT_REGISTER_ENUM(ocb3)
TOMCRYPT_REGISTER_ENUM(ocb)
TOMCRYPT_REGISTER_ENUM(ccm)
TOMCRYPT_REGISTER_ENUM(gcm)
TOMCRYPT_REGISTER_ENUM(pelican)
TOMCRYPT_REGISTER_ENUM(xcbc)
TOMCRYPT_REGISTER_ENUM(f9)
}
if(!l) break;
*l = ' ';
}
if(!use_tomcrypt || (ctx->idx < 0)) {
FREE(ctx)
}
return(ctx);
}
//if(outsz > insz) outsz = insz;
tmp = outsz;
int blocklen = 0;
int set_tomcrypt_blocklen(int size, int blocklen) {
if(blocklen > 0) {
size = (size / blocklen) * blocklen;
}
return size;
}
#define TOMCRYPT_CRYPT_MODE3(X) \
X##_done(&X);
#define TOMCRYPT_CRYPT_MODE2(X) \
if(g_encrypt_mode) { if(X##_encrypt(in, out, insz, &X)) if(X##_encrypt(in, out, set_tomcrypt_blocklen(insz, blocklen), &X)) goto quit; } \
else { if(X##_decrypt(in, out, insz, &X)) if(X##_decrypt(in, out, set_tomcrypt_blocklen(insz, blocklen), &X)) goto quit; } \
TOMCRYPT_CRYPT_MODE3(X)
#define TOMCRYPT_CRYPT_MODE(X) \
if(X##_setiv(ctx->ivec, ctx->ivecsz, &X)) goto quit; \
TOMCRYPT_CRYPT_MODE2(X)
if(ret) *ret = 0;
if(ctx->idx < 0) ctx->idx = 0;
if(ctx->hash) {
if(hash_memory(ctx->idx, in, insz, out, &tmp)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_ecb) {
if(ecb_start(ctx->idx, ctx->key, ctx->keysz, 0, &ecb)) goto quit;
blocklen = ecb.blocklen;
TOMCRYPT_CRYPT_MODE2(ecb)
} else if(ctx->cipher == tomcrypt_enum_cfb) {
if(cfb_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, 0, &cfb)) goto quit;
blocklen = cfb.blocklen;
TOMCRYPT_CRYPT_MODE(cfb)
} else if(ctx->cipher == tomcrypt_enum_ofb) {
if(ofb_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, 0, &ofb)) goto quit;
blocklen = ofb.blocklen;
TOMCRYPT_CRYPT_MODE(ofb)
} else if(ctx->cipher == tomcrypt_enum_cbc) {
if(cbc_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, 0, &cbc)) goto quit;
blocklen = cbc.blocklen;
TOMCRYPT_CRYPT_MODE(cbc)
} else if(ctx->cipher == tomcrypt_enum_ctr) {
if(ctr_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, 0, CTR_COUNTER_LITTLE_ENDIAN, &ctr)) goto quit;
blocklen = ctr.blocklen;
TOMCRYPT_CRYPT_MODE(ctr)
} else if(ctx->cipher == tomcrypt_enum_lrw) {
if(lrw_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, ctx->tweak, 0, &lrw)) goto quit;
//blocklen = lrw.blocklen;
TOMCRYPT_CRYPT_MODE(lrw)
} else if(ctx->cipher == tomcrypt_enum_f8) {
if(f8_start(ctx->idx, ctx->ivec, ctx->key, ctx->keysz, ctx->nonce, ctx->noncelen, 0, &f8)) goto quit;
blocklen = f8.blocklen;
TOMCRYPT_CRYPT_MODE(f8)
} else if(ctx->cipher == tomcrypt_enum_xts) {
if(xts_start(ctx->idx, ctx->key, ctx->nonce, ctx->keysz, 0, &xts)) goto quit;
//blocklen = xts.blocklen;
if(g_encrypt_mode) { if(xts_encrypt(in, insz, out, ctx->tweak, &xts)) goto quit; } \
else { if(xts_decrypt(in, insz, out, ctx->tweak, &xts)) goto quit; } \
TOMCRYPT_CRYPT_MODE3(xts)
} else if(ctx->cipher == tomcrypt_enum_hmac) {
if(hmac_memory(ctx->idx, ctx->key, ctx->keysz, in, insz, out, &tmp)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_omac) {
if(omac_memory(ctx->idx, ctx->key, ctx->keysz, in, insz, out, &tmp)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_pmac) {
if(pmac_memory(ctx->idx, ctx->key, ctx->keysz, in, insz, out, &tmp)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_eax) {
tmp = sizeof(tag);
if(g_encrypt_mode) {
if(eax_encrypt_authenticate_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce, ctx->noncelen,
ctx->header, ctx->headerlen,
in, insz,
out,
tag, &tmp)) goto quit;
} else {
if(eax_decrypt_verify_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce, ctx->noncelen,
ctx->header, ctx->headerlen,
in, insz,
out,
tag, tmp,
&stat)) goto quit;
}
tmp = insz;
} else if(ctx->cipher == tomcrypt_enum_ocb3) {
tmp = sizeof(tag);
if(g_encrypt_mode) {
if(ocb3_encrypt_authenticate_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce, ctx->noncelen,
ctx->header, ctx->headerlen,
in, insz,
out,
tag, &tmp)) goto quit;
} else {
if(ocb3_decrypt_verify_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce, ctx->noncelen,
ctx->header, ctx->headerlen,
in, insz,
out,
tag, tmp,
&stat)) goto quit;
}
tmp = insz;
} else if(ctx->cipher == tomcrypt_enum_ocb) {
tmp = sizeof(tag);
if(g_encrypt_mode) {
if(ocb_encrypt_authenticate_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce,
in, insz,
out,
tag, &tmp)) goto quit;
} else {
if(ocb_decrypt_verify_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->nonce,
in, insz,
out,
tag, tmp,
&stat)) goto quit;
}
tmp = insz;
} else if(ctx->cipher == tomcrypt_enum_ccm) {
tmp = sizeof(tag);
if(ccm_memory(
ctx->idx,
ctx->key, ctx->keysz,
NULL, //uskey,
ctx->nonce, ctx->noncelen,
ctx->header, ctx->headerlen,
in, insz,
out,
tag, &tmp,
g_encrypt_mode ? CCM_ENCRYPT: CCM_DECRYPT)) goto quit;
tmp = insz;
} else if(ctx->cipher == tomcrypt_enum_gcm) {
tmp = sizeof(tag);
if(gcm_memory(
ctx->idx,
ctx->key, ctx->keysz,
ctx->ivec, ctx->ivecsz,
ctx->nonce, ctx->noncelen, //adata, adatalen,
in, insz,
out,
tag, &tmp,
g_encrypt_mode ? GCM_ENCRYPT: GCM_DECRYPT)) goto quit;
tmp = insz;
} else if(ctx->cipher == tomcrypt_enum_pelican) {
if(pelican_memory(ctx->key, ctx->keysz, in, insz, out)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_xcbc) {
if(xcbc_memory(ctx->idx, ctx->key, ctx->keysz, in, insz, out, &tmp)) goto quit;
} else if(ctx->cipher == tomcrypt_enum_f9) {
if(f9_memory(ctx->idx, ctx->key, ctx->keysz, in, insz, out, &tmp)) goto quit;
}
if(ret) *ret = tmp;
return(ctx);
quit:
return NULL;
}
#endif
#ifndef DISABLE_SSL
// original Java code by Spirolone
// http://www.slightlymagic.net/forum/viewtopic.php?f=117&t=14839&start=135#p180107
int modpow_zed(unsigned char *content, int content_length) {
inline void System_arraycopy(unsigned char *src, int srcPos, unsigned char *dest, int destPos, int length) {
memcpy(dest + destPos, src + srcPos, length);
}
int i;
unsigned char result[256] = "";
memset(result, 0, sizeof(result));
if (content_length == 256)
System_arraycopy(content, 0, result, 0, content_length); //result = content;
else if (content_length > 256)
System_arraycopy(content, 1, result, 0, 256);
else if (content_length < 256)
System_arraycopy(content, 0, result, 256-content_length, content_length);
unsigned char m[24] = "";
for (i=0; i<20; i++)
m[i] = result[235+i];
m[20] = 0; m[21] = 0; m[22] = 0;
unsigned char mask[240] = "";
//MessageDigest md = MessageDigest.getInstance("SHA-1");
for (i=0; i<12; i++){
m[23] = (byte)i;
SHA1(m, 24, mask + (i*20));
}
for (i=0; i<235; i++)
result[i] ^= mask[i];
int zeroes = 0;
// Remove non-data bytes
if (result[zeroes]==-0x80)
zeroes++;
while (result[zeroes]==0)
zeroes++;
int decoded_length = 214-zeroes;
System_arraycopy(result, zeroes+1, content, 0, decoded_length);
return decoded_length;
}
#endif
void DO_QUICKBMS_HASH(u8 *INPUT, int INPUT_SIZE) {
int OUTPUT_SIZE = INPUT_SIZE * 2;
u8 OUTPUT[OUTPUT_SIZE + 1];
add_var(0, "QUICKBMS_HASH", INPUT, 0, INPUT_SIZE);
byte2hex(INPUT, INPUT_SIZE, OUTPUT, sizeof(OUTPUT), 1);
add_var(0, "QUICKBMS_HEXHASH", OUTPUT, 0, -1);
mytolower(OUTPUT);
add_var(0, "QUICKBMS_HEXHASHL", OUTPUT, 0, -1);
}
int do_quickbms_hmac(u8 *data, int datalen, u8 *digest) {
#ifndef DISABLE_SSL
EVP_MD_CTX *tmpctx;
i32 tmp = 0;
tmpctx = calloc(1, sizeof(EVP_MD_CTX));
if(!tmpctx) STD_ERR(QUICKBMS_ERROR_MEMORY);
if(hmac_ctx) {
HMAC_Update(hmac_ctx, data, datalen);
EVP_MD_CTX_copy_ex(tmpctx, evpmd_ctx);
HMAC_Final(hmac_ctx, digest, &tmp);
} else {
EVP_DigestUpdate(evpmd_ctx, data, datalen);
EVP_MD_CTX_copy_ex(tmpctx, evpmd_ctx);
EVP_DigestFinal(evpmd_ctx, digest, &tmp);
}
FREE(evpmd_ctx);
evpmd_ctx = tmpctx;
DO_QUICKBMS_HASH(digest, tmp);
#endif
return 0;
}
// if datalen is negative then it will return 0 if encryption is enabled or -1 if disabled
int perform_encryption(u8 *data, int datalen) {
#define ENCRYPT_BLOCKS(X,Y) { \
tmp = datalen / X; \
while(tmp--) { \
Y; \
data += X; \
} \
}
#ifndef EVP_MAX_MD_SIZE
#define EVP_MAX_MD_SIZE 64
#endif
u8 digest[EVP_MAX_MD_SIZE];
u_int crc = 0;
int i = 0;
i32 tmp = 0,
stat = 0;
// if(datalen <= 0) NEVER ENABLE THIS because it's needed
// if(!data) NEVER
QUICK_CRYPT_CASE(wincrypt_ctx)
if(!g_encrypt_mode) datalen = wincrypt_decrypt(wincrypt_ctx, data, datalen);
else datalen = wincrypt_encrypt(wincrypt_ctx, data, datalen);
#ifndef DISABLE_SSL
} else QUICK_CRYPT_CASE(evp_ctx)
tmp = datalen;
if(g_reimport) {
i = evp_ctx->encrypt;
evp_ctx->encrypt = g_encrypt_mode;
}
EVP_CipherUpdate(evp_ctx, data, &tmp, data, datalen);
if(g_reimport) evp_ctx->encrypt = i;
//EVP_CipherFinal(evp_ctx, data + datalen, &tmp); // it causes tons of problems
//datalen += tmp;
} else QUICK_CRYPT_CASE(evpmd_ctx) // probably I seem crazy for all these operations... but it's perfect!
do_quickbms_hmac(data, datalen, digest);
} else QUICK_CRYPT_CASE(blowfish_ctx)
if(!g_encrypt_mode) ENCRYPT_BLOCKS(8, BF_decrypt((void *)data, blowfish_ctx))
else ENCRYPT_BLOCKS(8, BF_encrypt((void *)data, blowfish_ctx))
} else QUICK_CRYPT_CASE(aes_ctr_ctx)
// don't exist 192 and 256
switch(aes_ctr_ctx->type) {
case aes_ctr_ctx_ctr: AES_ctr128_encrypt(data, data, datalen, &aes_ctr_ctx->ctx, aes_ctr_ctx->ivec, aes_ctr_ctx->ecount, &aes_ctr_ctx->num); break;
case aes_ctr_ctx_ige: AES_ige_encrypt(data, data, datalen, &aes_ctr_ctx->ctx, aes_ctr_ctx->ivec, g_encrypt_mode); break;
case aes_ctr_ctx_bi_ige: AES_bi_ige_encrypt(data, data, datalen, &aes_ctr_ctx->ctx, &aes_ctr_ctx->ctx, aes_ctr_ctx->ivec, g_encrypt_mode); break; // placeholder, it's wrong
case aes_ctr_ctx_heat: {
tmp = datalen / AES_BLOCK_SIZE;
if(datalen % AES_BLOCK_SIZE) tmp++;
while(tmp--) {