Magic-Mirror/radare2
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Add rahash2 -e

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This commit is contained in:
pancake 2014-02-05 12:07:27 +01:00
parent e6dfa898d1
commit c24543f112
2 changed files with 34 additions and 23 deletions
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53
binr/rahash2/rahash2.c
View File

@ -40,8 +40,19 @@ static void do_hash_seed(const char *seed) {
}
}
static void do_hash_print(RHash *ctx, int hash, int dlen, int rad) {
static void do_hash_hexprint (const ut8 *c, int len, int ule) {
int i;
if (ule) {
for (i=len-1; i>=0; i--)
printf ("%02x", c[i]);
} else {
for (i=0; i<len; i++)
printf ("%02x", c[i]);
}
printf ("\n");
}
static void do_hash_print(RHash *ctx, int hash, int dlen, int rad, int ule) {
char *o;
const ut8 *c = ctx->digest;
const char *hname = r_hash_name (hash);
@ -50,15 +61,11 @@ static void do_hash_print(RHash *ctx, int hash, int dlen, int rad) {
if (!quiet)
printf ("0x%08"PFMT64x"-0x%08"PFMT64x" %s: ",
from, to, hname);
for (i=0; i<dlen; i++)
printf ("%02x", c[i]);
printf ("\n");
do_hash_hexprint (c, dlen, ule);
break;
case 1:
printf ("e file.%s=", hname);
for (i=0; i<dlen; i++)
printf ("%02x", c[i]);
printf ("\n");
do_hash_hexprint (c, dlen, ule);
break;
default:
o = r_print_randomart (c, dlen, from);
@ -68,7 +75,7 @@ static void do_hash_print(RHash *ctx, int hash, int dlen, int rad) {
}
}
static int do_hash_internal(RHash *ctx, int hash, const ut8 *buf, int len, int rad, int print) {
static int do_hash_internal(RHash *ctx, int hash, const ut8 *buf, int len, int rad, int print, int le) {
int dlen;
if (len<1)
return 0;
@ -88,13 +95,13 @@ static int do_hash_internal(RHash *ctx, int hash, const ut8 *buf, int len, int r
} else {
if (iterations>0)
r_hash_do_spice (ctx, hash, iterations, _s);
do_hash_print (ctx, hash, dlen, rad);
do_hash_print (ctx, hash, dlen, rad, le);
}
return 1;
}
static int do_hash(const char *file, const char *algo, RIO *io, int bsize, int rad) {
static int do_hash(const char *file, const char *algo, RIO *io, int bsize, int rad, int ule) {
ut64 j, fsize, algobit = r_hash_name_to_bits (algo);
RHash *ctx;
ut8 *buf;
@ -130,24 +137,24 @@ static int do_hash(const char *file, const char *algo, RIO *io, int bsize, int r
r_hash_do_begin (ctx, i);
if (s.buf && s.prefix) {
do_hash_internal (ctx,
hashbit, s.buf, s.len, rad, 0);
hashbit, s.buf, s.len, rad, 0, ule);
}
for (j=from; j<to; j+=bsize) {
r_io_read_at (io, j, buf, bsize);
do_hash_internal (ctx,
hashbit, buf, ((j+bsize)<fsize)?
bsize: (bsize>j)?(fsize-j):0, rad, 0);
do_hash_internal (ctx, hashbit, buf,
((j+bsize)<fsize)? bsize:
(bsize>j)?(fsize-j):0, rad, 0, ule);
}
if (s.buf && !s.prefix) {
do_hash_internal (ctx,
hashbit, s.buf, s.len, rad, 0);
do_hash_internal (ctx, hashbit, s.buf,
s.len, rad, 0, ule);
}
r_hash_do_end (ctx, i);
if (iterations>0)
r_hash_do_spice (ctx, i, iterations, _s);
if (!quiet)
printf ("%s: ", file);
do_hash_print (ctx, i, dlen, rad);
do_hash_print (ctx, i, dlen, rad, ule);
}
}
if (_s)
@ -169,7 +176,7 @@ static int do_hash(const char *file, const char *algo, RIO *io, int bsize, int r
r_io_read_at (io, j, buf, bsize);
from = j;
to = j+bsize;
do_hash_internal (ctx, hashbit, buf, nsize, rad, 1);
do_hash_internal (ctx, hashbit, buf, nsize, rad, 1, ule);
}
from = ofrom;
to = oto;
@ -188,6 +195,7 @@ static int do_help(int line) {
" -a algo comma separated list of algorithms (default is 'sha256')\n"
" -b bsize specify the size of the block (instead of full file)\n"
" -B show per-block hash\n"
" -e swap endian (use little endian)\n"
" -f from start hashing at given address\n"
" -i num repeat hash N iterations\n"
" -S seed use given seed (hexa or s:string) use ^ to prefix\n"
@ -213,7 +221,7 @@ static void algolist() {
}
int main(int argc, char **argv) {
int i, ret, c, rad = 0, quit = 0, bsize = 0, numblocks = 0;
int i, ret, c, rad = 0, quit = 0, bsize = 0, numblocks = 0, ule = 0;
const char *algo = "sha256"; /* default hashing algorithm */
const char *seed = NULL;
char *hashstr = NULL;
@ -221,7 +229,7 @@ int main(int argc, char **argv) {
RHash *ctx;
RIO *io;
while ((c = getopt (argc, argv, "rva:i:S:s:b:nBhf:t:kLq")) != -1) {
while ((c = getopt (argc, argv, "rvea:i:S:s:b:nBhf:t:kLq")) != -1) {
switch (c) {
case 'q': quiet = 1; break;
case 'i': iterations = atoi (optarg);
@ -233,6 +241,7 @@ int main(int argc, char **argv) {
case 'S': seed = optarg; break;
case 'n': numblocks = 1; break;
case 'L': algolist (); return 0;
case 'e': ule = 1; break;
case 'r': rad = 1; break;
case 'k': rad = 2; break;
case 'a': algo = optarg; break;
@ -276,7 +285,7 @@ int main(int argc, char **argv) {
from = 0;
to = strsz;
do_hash_internal (ctx, hashbit,
(const ut8*)str, strsz, rad, 1);
(const ut8*)str, strsz, rad, 1, ule);
r_hash_free (ctx);
quit = R_TRUE;
}
@ -308,7 +317,7 @@ int main(int argc, char **argv) {
eprintf ("rahash2: Cannot open '%s'\n", argv[i]);
return 1;
}
ret |= do_hash (argv[i], algo, io, bsize, rad);
ret |= do_hash (argv[i], algo, io, bsize, rad, ule);
r_io_free (io);
}
return ret;

4
man/rahash2.1
View File

@ -4,7 +4,7 @@ hasher2 \- block based hashing utility
.Dd Nov 11, 2013
.Sh SYNOPSIS
.Nm hasher2
.Op Fl hBrkv
.Op Fl heBrkv
.Op Fl a Ar algorithm
.Op Fl b Ar size
.Op Fl s Ar string
@ -28,6 +28,8 @@ This is the command used by the '#' command of radare.
Select an algorithm for the hashing. Valid values are md5, crc32 and sha1
.It Fl b Ar blocksize
Define the block size
.It Fl e
Use little endian to display checksums
.It Fl i Ar iters
Apply the hash Iters times to itself+seed
.It Fl B