aaru-dps/Aaru.Decryption
1
0
Fork 0
mirror of https://github.com/aaru-dps/Aaru.Decryption.git synced 2025-12-16 19:24:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix bitwise calculation losing data.

Browse Source
This commit is contained in:
Natalia Portillo
2021-08-17 17:41:14 +01:00
parent 73b212d3bb
commit 36b638fd4e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
DVD/CSS.cs
View File

@@ -571,7 +571,7 @@ namespace Aaru.Decryption.DVD
lfsr1Lo = ((lfsr1Lo & 1) << 8) ^ oLfsr1; lfsr1Lo = ((lfsr1Lo & 1) << 8) ^ oLfsr1;
oLfsr1 = _cssTable4[oLfsr1]; oLfsr1 = _cssTable4[oLfsr1];
byte oLfsr0 = (byte)(((((((lfsr0 >> 8) ^ lfsr0) >> 1) ^ lfsr0) >> 3) ^ lfsr0) >> 7); byte oLfsr0 = (byte)(((((((lfsr0 >> 8) ^ lfsr0) >> 1) ^ lfsr0) >> 3) ^ lfsr0) >> 7);
lfsr0 = (uint)((lfsr0 >> 8) | (oLfsr0 << 24)); lfsr0 = (lfsr0 >> 8) | ((uint)oLfsr0 << 24);
combined += (uint)((oLfsr0 ^ invert) + oLfsr1); combined += (uint)((oLfsr0 ^ invert) + oLfsr1);
k[i] = (byte)(combined & 0xff); k[i] = (byte)(combined & 0xff);
combined >>= 8; combined >>= 8;