move aes bits to libsec from nix kernel

Reference: /n/atom/patch/applied/wifisec
Date: Sat May 24 03:22:39 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/k10/wifi.c	Sat May 24 03:22:38 2014
+++ /sys/src/nix/k10/wifi.c	Sat May 24 03:22:38 2014
@@ -1395,128 +1395,6 @@
 	return memcmp(b->wp, mic, 8) != 0;
 }
 
-#define putbe	xputbe
-static uchar*
-putbe(uchar *p, int L, uint v)
-{
-	while(--L >= 0)
-		*p++ = (v >> L*8) & 0xFF;
-	return p;
-}
-
-static void
-xblock(int L, int M, uchar *N, uchar *a, int la, int lm, uchar t[16], AESstate *s)
-{
-	uchar l[8], *p, *x, *e;
-
-	assert(M >= 4 && M <= 16);
-	assert(L >= 2 && L <= 4);
-
-	t[0] = ((la > 0)<<6) | ((M-2)/2)<<3 | (L-1);	/* flags */
-	memmove(&t[1], N, 15-L);
-	putbe(&t[16-L], L, lm);
-	aes_encrypt(s->ekey, s->rounds, t, t);
-	
-	if(la > 0){
-		assert(la < 0xFF00);
-		for(p = l, e = putbe(l, 2, la), x = t; p < e; x++, p++)
-			*x ^= *p;
-		for(e = a + la; a < e; x = t){
-			for(; a < e && x < &t[16]; x++, a++)
-				*x ^= *a;
-			aes_encrypt(s->ekey, s->rounds, t, t);
-		}
-	}
-}
-
-static uchar*
-sblock(int L, uchar *N, uint i, uchar b[16], AESstate *s)
-{
-	b[0] = L-1;	/* flags */
-	memmove(&b[1], N, 15-L);
-	putbe(&b[16-L], L, i);
-	aes_encrypt(s->ekey, s->rounds, b, b);
-	return b;
-};
-
-static void
-aesCCMencrypt(int L, int M, uchar *N /* N[15-L] */,
-	uchar *a /* a[la] */, int la,
-	uchar *m /* m[lm+M] */, int lm,
-	AESstate *s)
-{
-	uchar t[16], b[16], *p, *x;
-	uint i;
-
-	xblock(L, M, N, a, la, lm, t, s);
-
-	for(i = 1; lm >= 16; i++, m += 16, lm -= 16){
-		sblock(L, N, i, b, s);
-
-		*((u32int*)&t[0]) ^= *((u32int*)&m[0]);
-		*((u32int*)&m[0]) ^= *((u32int*)&b[0]);
-		*((u32int*)&t[4]) ^= *((u32int*)&m[4]);
-		*((u32int*)&m[4]) ^= *((u32int*)&b[4]);
-		*((u32int*)&t[8]) ^= *((u32int*)&m[8]);
-		*((u32int*)&m[8]) ^= *((u32int*)&b[8]);
-		*((u32int*)&t[12]) ^= *((u32int*)&m[12]);
-		*((u32int*)&m[12]) ^= *((u32int*)&b[12]);
-
-		aes_encrypt(s->ekey, s->rounds, t, t);
-	}
-	if(lm > 0){
-		for(p = sblock(L, N, i, b, s), x = t; p < &b[lm]; x++, m++, p++){
-			*x ^= *m;
-			*m ^= *p;
-		}
-		aes_encrypt(s->ekey, s->rounds, t, t);
-	}
-
-	for(p = sblock(L, N, 0, b, s), x = t; p < &b[M]; x++, p++)
-		*x ^= *p;
-
-	memmove(m, t, M);
-}
-
-static int
-aesCCMdecrypt(int L, int M, uchar *N /* N[15-L] */,
-	uchar *a /* a[la] */, int la,
-	uchar *m /* m[lm+M] */, int lm,
-	AESstate *s)
-{
-	uchar t[16], b[16], *p, *x;
-	uint i;
-
-	xblock(L, M, N, a, la, lm, t, s);
-
-	for(i = 1; lm >= 16; i++, m += 16, lm -= 16){
-		sblock(L, N, i, b, s);
-
-		*((u32int*)&m[0]) ^= *((u32int*)&b[0]);
-		*((u32int*)&t[0]) ^= *((u32int*)&m[0]);
-		*((u32int*)&m[4]) ^= *((u32int*)&b[4]);
-		*((u32int*)&t[4]) ^= *((u32int*)&m[4]);
-		*((u32int*)&m[8]) ^= *((u32int*)&b[8]);
-		*((u32int*)&t[8]) ^= *((u32int*)&m[8]);
-		*((u32int*)&m[12]) ^= *((u32int*)&b[12]);
-		*((u32int*)&t[12]) ^= *((u32int*)&m[12]);
-
-		aes_encrypt(s->ekey, s->rounds, t, t);
-	}
-	if(lm > 0){
-		for(p = sblock(L, N, i, b, s), x = t; p < &b[lm]; x++, m++, p++){
-			*m ^= *p;
-			*x ^= *m;
-		}
-		aes_encrypt(s->ekey, s->rounds, t, t);
-	}
-
-	for(p = sblock(L, N, 0, b, s), x = t; p < &b[M]; x++, p++)
-		*x ^= *p;
-
-	return memcmp(m, t, M) != 0;
-}
-
 static int
 setupCCMP(Wkey *k, Wifipkt *w, uvlong tsc, uchar nonce[13], uchar auth[32], AESstate *as)
 {