ckolivas/lrzip
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Add encryption -e option and flag encryption with a control flag, removing encrypt field.

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This commit is contained in:
Con Kolivas 2011-03-15 15:04:58 +11:00
parent 65f901a83c
commit 202d972a6c
4 changed files with 16 additions and 6 deletions
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1
liblrzip.h
View file

@ -48,6 +48,7 @@
#define LZO_TEST (control->flags & FLAG_THRESHOLD)
#define TMP_OUTBUF (control->flags & FLAG_TMP_OUTBUF)
#define TMP_INBUF (control->flags & FLAG_TMP_INBUF)
#define ENCRYPT (control->flags & FLAG_ENCRYPT)
#define print_output(format, args...) do {\
fprintf(control->msgout, format, ##args); \

7
lrzip.c
View file

@ -74,7 +74,7 @@ static char *make_magic(rzip_control *control)
* crc is still stored for compatibility with 0.5 versions.
*/
magic[21] = 1;
if (control->encrypt)
if (ENCRYPT)
magic[22] = 1;
memcpy(&magic[23], &control->salt, 16);
@ -153,11 +153,12 @@ static i64 enc_loops(uchar b1, uchar b2)
static void get_magicver06(rzip_control *control, char *magic)
{
if (magic[22] == 1)
control->encrypt = 1;
control->flags |= FLAG_ENCRYPT;
memcpy(control->salt, &magic[23], 16);
memcpy(&control->secs, control->salt, 5);
print_maxverbose("Storage time in seconds %lld\n", control->secs);
control->encloops = enc_loops(control->salt[5], control->salt[6]);
if (ENCRYPT)
print_maxverbose("Encryption hash loops %lld\n", control->encloops);
}
@ -791,6 +792,8 @@ next_chunk:
print_output("%s:\nlrzip version: %d.%d file\n", infilecopy, control->major_version, control->minor_version);
if (ENCRYPT)
print_output("Encrypted\n");
print_output("Compression: ");
if (ctype == CTYPE_NONE)
print_output("rzip alone\n");

2
lrzip_private.h
View file

@ -122,6 +122,7 @@ typedef struct md5_ctx md5_ctx;
#define FLAG_THRESHOLD (1 << 20)
#define FLAG_TMP_OUTBUF (1 << 21)
#define FLAG_TMP_INBUF (1 << 22)
#define FLAG_ENCRYPT (1 << 23)
#define NO_MD5 (!(HASH_CHECK) && !(HAS_MD5))
@ -191,7 +192,6 @@ struct rzip_control {
int fd_in;
int fd_out;
int fd_hist;
char encrypt;
i64 encloops;
uchar loop_byte1;
uchar loop_byte2;

8
main.c
View file

@ -77,6 +77,7 @@
#define LZO_TEST (control.flags & FLAG_THRESHOLD)
#define TMP_OUTBUF (control.flags & FLAG_TMP_OUTBUF)
#define TMP_INBUF (control.flags & FLAG_TMP_INBUF)
#define ENCRYPT (control.flags & FLAG_ENCRYPT)
#define print_output(format, args...) do {\
fprintf(control.msgout, format, ##args); \
@ -166,6 +167,7 @@ static void usage(void)
print_output("General options:\n");
print_output(" -c check integrity of file written on decompression\n");
print_output(" -d decompress\n");
print_output(" -e password protected encryption on compression\n");
print_output(" -h|-? show help\n");
print_output(" -H display md5 hash integrity information\n");
print_output(" -i show compressed file information\n");
@ -268,6 +270,7 @@ static void show_summary(void)
print_verbose("Using Unlimited Window size\n");
}
print_maxverbose("Storage time in seconds %lld\n", control.secs);
if (ENCRYPT)
print_maxverbose("Encryption hash loops %lld\n", control.encloops);
}
}
@ -515,7 +518,7 @@ int main(int argc, char *argv[])
else if (!strstr(eptr,"NOCONFIG"))
read_config(&control);
while ((c = getopt(argc, argv, "L:h?dS:tVvDfqo:w:nlbUO:TN:p:gziHck")) != -1) {
while ((c = getopt(argc, argv, "bcdDefghHiklL:nN:o:O:p:qS:tTUvVw:z?")) != -1) {
switch (c) {
case 'b':
if (control.flags & FLAG_NOT_LZMA)
@ -532,6 +535,9 @@ int main(int argc, char *argv[])
case 'D':
control.flags &= ~FLAG_KEEP_FILES;
break;
case 'e':
control.flags |= FLAG_ENCRYPT;
break;
case 'f':
control.flags |= FLAG_FORCE_REPLACE;
break;