@@ -139,7 +139,7 @@ void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) {

     struct AVDES des;

     struct AVRC4 rc4;

     int num_qwords = len >> 3;

-    uint64_t *qwords = (uint64_t *)data;

+    uint8_t *qwords = data;

     uint64_t rc4buff[8];

     uint64_t packetkey;

     uint32_t ms_keys[12];

@@ -156,7 +156,7 @@ void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) {

     av_rc4_crypt(&rc4, (uint8_t *)rc4buff, NULL, sizeof(rc4buff), NULL, 1);

     multiswap_init((uint8_t *)rc4buff, ms_keys);

-    packetkey = AV_RN64(&qwords[num_qwords - 1]);

+    packetkey = AV_RN64(&qwords[num_qwords*8 - 8]);

     packetkey ^= rc4buff[7];

     av_des_init(&des, key + 12, 64, 1);

     av_des_crypt(&des, (uint8_t *)&packetkey, (uint8_t *)&packetkey, 1, NULL, 1);

@@ -166,7 +166,7 @@ void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) {

     av_rc4_crypt(&rc4, data, data, len, NULL, 1);

     ms_state = 0;

-    for (i = 0; i < num_qwords - 1; i++, qwords++)

+    for (i = 0; i < num_qwords - 1; i++, qwords += 8)

         ms_state = multiswap_enc(ms_keys, ms_state, AV_RL64(qwords));

     multiswap_invert_keys(ms_keys);

     packetkey = (packetkey << 32) | (packetkey >> 32);