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Diffstat (limited to 'toys/lsb/md5sum.c')
-rw-r--r--toys/lsb/md5sum.c35
1 files changed, 18 insertions, 17 deletions
diff --git a/toys/lsb/md5sum.c b/toys/lsb/md5sum.c
index 92e9221b..12f04503 100644
--- a/toys/lsb/md5sum.c
+++ b/toys/lsb/md5sum.c
@@ -168,19 +168,21 @@ static void hash_update(char *data, unsigned int len, void (*transform)(void))
j = TT.count & 63;
TT.count += len;
- // Enough data to process a frame?
- if ((j + len) > 63) {
- i = 64-j;
- memcpy(TT.buffer.c + j, data, i);
+ for (;;) {
+ // Grab next chunk of data, return if it's not enough to process a frame
+ i = 64 - j;
+ if (i>len) i = len;
+ memcpy(TT.buffer.c+j, data, i);
+ if (j+i != 64) break;
+
+ // Process a frame
+ if (IS_BIG_ENDIAN)
+ for (j=0; j<16; j++) TT.buffer.i[j] = SWAP_LE32(TT.buffer.i[j]);
transform();
- for ( ; i + 63 < len; i += 64) {
- memcpy(TT.buffer.c, data + i, 64);
- transform();
- }
- j = 0;
- } else i = 0;
- // Grab remaining chunk
- memcpy(TT.buffer.c + j, data + i, len - i);
+ j=0;
+ data += i;
+ len -= i;
+ }
}
// Callback for loopfiles()
@@ -221,16 +223,15 @@ static void do_hash(int fd, char *name)
hash_update(&buf, 1, transform);
buf = 0;
} while ((TT.count & 63) != 56);
- if (sha1) count=bswap_64(count);
- for (i = 0; i < 8; i++) TT.buffer.c[56+i] = count >> (8*i);
- transform();
+ count = sha1 ? SWAP_BE64(count) : SWAP_LE64(count);
+ hash_update((void *)&count, 8, transform);
if (sha1)
for (i = 0; i < 20; i++)
printf("%02x", 255&(TT.state[i>>2] >> ((3-(i & 3)) * 8)));
- else for (i=0; i<4; i++) printf("%08x", SWAP_BE32(TT.state[i]));
+ else for (i=0; i<4; i++) printf("%08x", bswap_32(TT.state[i]));
- // Wipe variables. Cryptographer paranoia.
+ // Wipe variables. Cryptographer paranoia.
memset(&TT, 0, sizeof(TT));
printf((toys.optflags & FLAG_b) ? "\n" : " %s\n", name);