configure: Support MSVC 2015

[ffmpeg] / libavutil / des.c

diff --git a/libavutil/des.c b/libavutil/des.c
index 43f6c4ae2ea4d6b1ca2d5149867a8699e6041566..ab0fc2f8bc9746af503642fd31dd73d0a914a92b 100644 (file)
--- a/libavutil/des.c
+++ b/libavutil/des.c
@@ -2,20 +2,20 @@
  * DES encryption/decryption
  * Copyright (c) 2007 Reimar Doeffinger
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include <inttypes.h>
@@ -39,6 +39,7 @@ static const uint8_t IP_shuffle[] = {
 };
 #undef T
 
+#if CONFIG_SMALL || defined(GENTABLES)
 #define T(a, b, c, d) 32-a,32-b,32-c,32-d
 static const uint8_t P_shuffle[] = {
     T(16,  7, 20, 21),
@@ -51,6 +52,7 @@ static const uint8_t P_shuffle[] = {
     T(22, 11,  4, 25)
 };
 #undef T
+#endif
 
 #define T(a, b, c, d, e, f, g) 64-a,64-b,64-c,64-d,64-e,64-f,64-g
 static const uint8_t PC1_shuffle[] = {
@@ -240,7 +242,7 @@ static uint32_t f_func(uint32_t r, uint64_t k) {
 }
 
 /**
- * \brief rotate the two halves of the expanded 56 bit key each 1 bit left
+ * @brief rotate the two halves of the expanded 56 bit key each 1 bit left
  *
  * Note: the specification calls this "shift", so I kept it although
  * it is confusing.
@@ -296,11 +298,11 @@ int av_des_init(AVDES *d, const uint8_t *key, int key_bits, int decrypt) {
     return 0;
 }
 
-void av_des_crypt(AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt) {
-    uint64_t iv_val = iv ? be2me_64(*(uint64_t *)iv) : 0;
+static void av_des_crypt_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt, int mac) {
+    uint64_t iv_val = iv ? AV_RB64(iv) : 0;
     while (count-- > 0) {
         uint64_t dst_val;
-        uint64_t src_val = src ? be2me_64(*(const uint64_t *)src) : 0;
+        uint64_t src_val = src ? AV_RB64(src) : 0;
         if (decrypt) {
             uint64_t tmp = src_val;
             if (d->triple_des) {
@@ -317,21 +319,29 @@ void av_des_crypt(AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t
             }
             iv_val = iv ? dst_val : 0;
         }
-        *(uint64_t *)dst = be2me_64(dst_val);
+        AV_WB64(dst, dst_val);
         src += 8;
-        dst += 8;
+        if (!mac)
+            dst += 8;
     }
     if (iv)
-        *(uint64_t *)iv = be2me_64(iv_val);
+        AV_WB64(iv, iv_val);
+}
+
+void av_des_crypt(AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt) {
+    av_des_crypt_mac(d, dst, src, count, iv, decrypt, 0);
+}
+
+void av_des_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count) {
+    av_des_crypt_mac(d, dst, src, count, (uint8_t[8]){0}, 0, 1);
 }
 
 #ifdef TEST
-#undef printf
-#undef rand
-#undef srand
 #include <stdlib.h>
 #include <stdio.h>
-#include <sys/time.h>
+
+#include "time.h"
+
 static uint64_t rand64(void) {
     uint64_t r = rand();
     r = (r << 32) | rand();
@@ -339,17 +349,17 @@ static uint64_t rand64(void) {
 }
 
 static const uint8_t test_key[] = {0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0};
-static const DECLARE_ALIGNED(8, uint8_t, plain[]) = {0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};
-static const DECLARE_ALIGNED(8, uint8_t, crypt[]) = {0x4a, 0xb6, 0x5b, 0x3d, 0x4b, 0x06, 0x15, 0x18};
-static DECLARE_ALIGNED(8, uint8_t, tmp[8]);
-static DECLARE_ALIGNED(8, uint8_t, large_buffer[10002][8]);
+static const DECLARE_ALIGNED(8, uint8_t, plain)[] = {0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};
+static const DECLARE_ALIGNED(8, uint8_t, crypt)[] = {0x4a, 0xb6, 0x5b, 0x3d, 0x4b, 0x06, 0x15, 0x18};
+static DECLARE_ALIGNED(8, uint8_t, tmp)[8];
+static DECLARE_ALIGNED(8, uint8_t, large_buffer)[10002][8];
 static const uint8_t cbc_key[] = {
     0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
     0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01,
     0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23
 };
 
-int run_test(int cbc, int decrypt) {
+static int run_test(int cbc, int decrypt) {
     AVDES d;
     int delay = cbc && !decrypt ? 2 : 1;
     uint64_t res;
@@ -378,13 +388,11 @@ int main(void) {
 #ifdef GENTABLES
     int j;
 #endif
-    struct timeval tv;
     uint64_t key[3];
     uint64_t data;
     uint64_t ct;
     uint64_t roundkeys[16];
-    gettimeofday(&tv, NULL);
-    srand(tv.tv_sec * 1000 * 1000 + tv.tv_usec);
+    srand(av_gettime());
     key[0] = AV_RB64(test_key);
     data = AV_RB64(plain);
     gen_roundkeys(roundkeys, key[0]);
@@ -402,7 +410,7 @@ int main(void) {
         printf("Partial Monte-Carlo test failed\n");
         return 1;
     }
-    for (i = 0; i < 1000000; i++) {
+    for (i = 0; i < 1000; i++) {
         key[0] = rand64(); key[1] = rand64(); key[2] = rand64();
         data = rand64();
         av_des_init(&d, key, 192, 0);