chasing indexing error

1 files changed, 0 insertions, 61 deletions

diff --git a/ffmpeg/libavutil/rc4.c b/ffmpeg/libavutil/rc4.c
deleted file mode 100644
index 4e52ba5..0000000
--- a/ffmpeg/libavutil/rc4.c
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * RC4 encryption/decryption/pseudo-random number generator
- * Copyright (c) 2007 Reimar Doeffinger
- *
- * loosely based on LibTomCrypt by Tom St Denis
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avutil.h"
-#include "common.h"
-#include "rc4.h"
-
-typedef struct AVRC4 AVRC4;
-
-int av_rc4_init(AVRC4 *r, const uint8_t *key, int key_bits, int decrypt) {
-    int i, j;
-    uint8_t y;
-    uint8_t *state = r->state;
-    int keylen = key_bits >> 3;
-    if (key_bits & 7)
-        return -1;
-    for (i = 0; i < 256; i++)
-        state[i] = i;
-    y = 0;
-    // j is i % keylen
-    for (j = 0, i = 0; i < 256; i++, j++) {
-        if (j == keylen) j = 0;
-        y += state[i] + key[j];
-        FFSWAP(uint8_t, state[i], state[y]);
-    }
-    r->x = 1;
-    r->y = state[1];
-    return 0;
-}
-
-void av_rc4_crypt(AVRC4 *r, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt) {
-    uint8_t x = r->x, y = r->y;
-    uint8_t *state = r->state;
-    while (count-- > 0) {
-        uint8_t sum = state[x] + state[y];
-        FFSWAP(uint8_t, state[x], state[y]);
-        *dst++ = src ? *src++ ^ state[sum] : state[sum];
-        x++;
-        y += state[x];
-    }
-    r->x = x; r->y = y;
-}