removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 104 deletions

diff --git a/sys/src/cmd/unix/drawterm/libsec/rc4.c b/sys/src/cmd/unix/drawterm/libsec/rc4.c
deleted file mode 100644
index beafa4868..000000000
--- a/sys/src/cmd/unix/drawterm/libsec/rc4.c
+++ /dev/null
@@ -1,104 +0,0 @@
-#include "os.h"
-#include <libsec.h>
-
-void
-setupRC4state(RC4state *key, uchar *start, int n)
-{
-	int t;
-	int index2;
-	uchar *state;
-	uchar *p, *e, *sp, *se;
-
-	state = key->state;
-	se = &state[256];
-	for(sp = state; sp < se; sp++)
-		*sp = sp - state;
-
-	key->x = 0;
-	key->y = 0;
-	index2 = 0;
-	e = start + n;
-	p = start;
-	for(sp = state; sp < se; sp++)
-	{
-		t = *sp;
-		index2 = (*p + t + index2) & 255;
-		*sp = state[index2];
-		state[index2] = t;
-		if(++p >= e)
-			p = start;
-	}
-}
-
-void
-rc4(RC4state *key, uchar *p, int len)
-{
-	int tx, ty;
-	int x, y;
-	uchar *state;
-	uchar *e;
-
-	x = key->x;
-	y = key->y;
-	state = &key->state[0];
-	for(e = p + len; p < e; p++)
-	{
-		x = (x+1)&255;
-		tx = state[x];
-		y = (y+tx)&255;
-		ty = state[y];
-		state[x] = ty;
-		state[y] = tx;
-		*p ^= state[(tx+ty)&255];
-	}
-	key->x = x;
-	key->y = y;
-}
-
-void
-rc4skip(RC4state *key, int len)
-{
-	int tx, ty;
-	int x, y;
-	uchar *state;
-	int i;
-
-	x = key->x;
-	y = key->y;
-	state = &key->state[0];
-	for(i=0; i<len; i++)
-	{
-		x = (x+1)&255;
-		tx = state[x];
-		y = (y+tx)&255;
-		ty = state[y];
-		state[x] = ty;
-		state[y] = tx;
-	}
-	key->x = x;
-	key->y = y;
-}
-
-void
-rc4back(RC4state *key, int len)
-{
-	int tx, ty;
-	int x, y;
-	uchar *state;
-	int i;
-
-	x = key->x;
-	y = key->y;
-	state = &key->state[0];
-	for(i=0; i<len; i++)
-	{
-		ty = state[x];
-		tx = state[y];
-		state[y] = ty;
-		state[x] = tx;
-		y = (y-tx)&255;
-		x = (x-1)&255;
-	}
-	key->x = x;
-	key->y = y;
-}