Delete bundled copy of NSS and replace with README.

nss/lib/freebl/ecl/ec_naf.c

Index: nss/lib/freebl/ecl/ec_naf.c
diff --git a/nss/lib/freebl/ecl/ec_naf.c b/nss/lib/freebl/ecl/ec_naf.c
deleted file mode 100644
index 20892f09d0f87792177e94d2b7adb17f27bbc298..0000000000000000000000000000000000000000
--- a/nss/lib/freebl/ecl/ec_naf.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "ecl-priv.h"
-
-/* Returns 2^e as an integer. This is meant to be used for small powers of 
- * two. */
-int
-ec_twoTo(int e)
-{
-	int a = 1;
-	int i;
-
-	for (i = 0; i < e; i++) {
-		a *= 2;
-	}
-	return a;
-}
-
-/* Computes the windowed non-adjacent-form (NAF) of a scalar. Out should
- * be an array of signed char's to output to, bitsize should be the number 
- * of bits of out, in is the original scalar, and w is the window size.
- * NAF is discussed in the paper: D. Hankerson, J. Hernandez and A.
- * Menezes, "Software implementation of elliptic curve cryptography over
- * binary fields", Proc. CHES 2000. */
-mp_err
-ec_compute_wNAF(signed char *out, int bitsize, const mp_int *in, int w)
-{
-	mp_int k;
-	mp_err res = MP_OKAY;
-	int i, twowm1, mask;
-
-	twowm1 = ec_twoTo(w - 1);
-	mask = 2 * twowm1 - 1;
-
-	MP_DIGITS(&k) = 0;
-	MP_CHECKOK(mp_init_copy(&k, in));
-
-	i = 0;
-	/* Compute wNAF form */
-	while (mp_cmp_z(&k) > 0) {
-		if (mp_isodd(&k)) {
-			out[i] = MP_DIGIT(&k, 0) & mask;
-			if (out[i] >= twowm1)
-				out[i] -= 2 * twowm1;
-
-			/* Subtract off out[i].  Note mp_sub_d only works with
-			 * unsigned digits */
-			if (out[i] >= 0) {
-				MP_CHECKOK(mp_sub_d(&k, out[i], &k));
-			} else {
-				MP_CHECKOK(mp_add_d(&k, -(out[i]), &k));
-			}
-		} else {
-			out[i] = 0;
-		}
-		MP_CHECKOK(mp_div_2(&k, &k));
-		i++;
-	}
-	/* Zero out the remaining elements of the out array. */
-	for (; i < bitsize + 1; i++) {
-		out[i] = 0;
-	}
-  CLEANUP:
-	mp_clear(&k);
-	return res;
-
-}