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atenfyratenfyr
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fix indentation
1 parent 058142e commit 0c4afaa

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‎UAssetAPI/AC7Decrypt.cs‎

Lines changed: 179 additions & 179 deletions
Original file line numberDiff line numberDiff line change
@@ -3,28 +3,28 @@
33

44
namespace UAssetAPI
55
{
6-
public class AC7XorKey
7-
{
8-
public int NameKey;
9-
public int Offset;
10-
public int pk1;
11-
public int pk2;
6+
public class AC7XorKey
7+
{
8+
public int NameKey;
9+
public int Offset;
10+
public int pk1;
11+
public int pk2;
1212

13-
public void SkipCount(int count)
14-
{
15-
int num = count % 217;
16-
pk1 += num;
17-
if (pk1 >= 217)
18-
{
19-
pk1 -= 217;
20-
}
21-
int num2 = count % 1024;
22-
pk2 += num2;
23-
if (pk2 >= 1024)
24-
{
25-
pk2 -= 1024;
26-
}
27-
}
13+
public void SkipCount(int count)
14+
{
15+
int num = count % 217;
16+
pk1 += num;
17+
if (pk1 >= 217)
18+
{
19+
pk1 -= 217;
20+
}
21+
int num2 = count % 1024;
22+
pk2 += num2;
23+
if (pk2 >= 1024)
24+
{
25+
pk2 -= 1024;
26+
}
27+
}
2828

2929
public AC7XorKey(int nameKey, int offset)
3030
{
@@ -33,178 +33,178 @@ public AC7XorKey(int nameKey, int offset)
3333
}
3434
}
3535

36-
public class AC7Decrypt
36+
public class AC7Decrypt
3737
{
38-
private static byte[] AC7FullKey = new byte[0];
38+
private static byte[] AC7FullKey = new byte[0];
3939

40-
public AC7Decrypt()
40+
public AC7Decrypt()
4141
{
42-
if (AC7FullKey.Length == 0) AC7FullKey = Properties.Resources.AC7Key;
42+
if (AC7FullKey.Length == 0) AC7FullKey = Properties.Resources.AC7Key;
4343
}
4444

45-
public void Decrypt(string input, string output)
45+
public void Decrypt(string input, string output)
4646
{
47-
AC7XorKey xorKey = GetXorKey(Path.GetFileNameWithoutExtension(input));
48-
byte[] doneData = DecryptUAssetBytes(File.ReadAllBytes(input), xorKey);
49-
File.WriteAllBytes(output, doneData);
50-
try
51-
{
52-
byte[] doneData2 = DecryptUexpBytes(File.ReadAllBytes(Path.ChangeExtension(input, "uexp")), xorKey);
53-
File.WriteAllBytes(Path.ChangeExtension(output, "uexp"), doneData2);
54-
}
55-
catch { }
56-
}
47+
AC7XorKey xorKey = GetXorKey(Path.GetFileNameWithoutExtension(input));
48+
byte[] doneData = DecryptUAssetBytes(File.ReadAllBytes(input), xorKey);
49+
File.WriteAllBytes(output, doneData);
50+
try
51+
{
52+
byte[] doneData2 = DecryptUexpBytes(File.ReadAllBytes(Path.ChangeExtension(input, "uexp")), xorKey);
53+
File.WriteAllBytes(Path.ChangeExtension(output, "uexp"), doneData2);
54+
}
55+
catch { }
56+
}
5757

58-
public void Encrypt(string input, string output)
58+
public void Encrypt(string input, string output)
5959
{
60-
AC7XorKey xorKey = GetXorKey(Path.GetFileNameWithoutExtension(input));
61-
byte[] doneData = EncryptUAssetBytes(File.ReadAllBytes(input), xorKey);
62-
File.WriteAllBytes(output, doneData);
63-
try
64-
{
65-
byte[] doneData2 = EncryptUexpBytes(File.ReadAllBytes(Path.ChangeExtension(input, "uexp")), xorKey);
66-
File.WriteAllBytes(Path.ChangeExtension(output, "uexp"), doneData2);
67-
}
68-
catch { }
69-
}
60+
AC7XorKey xorKey = GetXorKey(Path.GetFileNameWithoutExtension(input));
61+
byte[] doneData = EncryptUAssetBytes(File.ReadAllBytes(input), xorKey);
62+
File.WriteAllBytes(output, doneData);
63+
try
64+
{
65+
byte[] doneData2 = EncryptUexpBytes(File.ReadAllBytes(Path.ChangeExtension(input, "uexp")), xorKey);
66+
File.WriteAllBytes(Path.ChangeExtension(output, "uexp"), doneData2);
67+
}
68+
catch { }
69+
}
7070

71-
public byte[] DecryptUAssetBytes(byte[] uasset, AC7XorKey xorkey)
72-
{
73-
uint num = BitConverter.ToUInt32(uasset, 0);
74-
if (num != UAsset.ACE7_MAGIC)
75-
{
76-
return uasset;
77-
}
78-
byte[] array = new byte[uasset.Length];
79-
array[0] = 193;
80-
array[1] = 131;
81-
array[2] = 42;
82-
array[3] = 158;
83-
for (int i = 4; i < array.Length; i++)
84-
{
85-
array[i] = GetXorByte(uasset[i], ref xorkey);
86-
}
87-
return array;
88-
}
71+
public byte[] DecryptUAssetBytes(byte[] uasset, AC7XorKey xorkey)
72+
{
73+
uint num = BitConverter.ToUInt32(uasset, 0);
74+
if (num != UAsset.ACE7_MAGIC)
75+
{
76+
return uasset;
77+
}
78+
byte[] array = new byte[uasset.Length];
79+
array[0] = 193;
80+
array[1] = 131;
81+
array[2] = 42;
82+
array[3] = 158;
83+
for (int i = 4; i < array.Length; i++)
84+
{
85+
array[i] = GetXorByte(uasset[i], ref xorkey);
86+
}
87+
return array;
88+
}
8989

90-
// Unsure if this works or not, feel free to modify & PR
91-
public byte[] EncryptUAssetBytes(byte[] uasset, AC7XorKey xorkey)
92-
{
93-
uint num = BitConverter.ToUInt32(uasset, 0);
94-
if (num != UAsset.UASSET_MAGIC)
95-
{
96-
return uasset;
97-
}
98-
byte[] array = new byte[uasset.Length];
99-
array[0] = 65;
100-
array[1] = 67;
101-
array[2] = 69;
102-
array[3] = 55;
103-
for (int i = 4; i < array.Length; i++)
104-
{
105-
array[i] = GetXorByte(uasset[i], ref xorkey);
106-
}
107-
return array;
108-
}
90+
// Unsure if this works or not, feel free to modify & PR
91+
public byte[] EncryptUAssetBytes(byte[] uasset, AC7XorKey xorkey)
92+
{
93+
uint num = BitConverter.ToUInt32(uasset, 0);
94+
if (num != UAsset.UASSET_MAGIC)
95+
{
96+
return uasset;
97+
}
98+
byte[] array = new byte[uasset.Length];
99+
array[0] = 65;
100+
array[1] = 67;
101+
array[2] = 69;
102+
array[3] = 55;
103+
for (int i = 4; i < array.Length; i++)
104+
{
105+
array[i] = GetXorByte(uasset[i], ref xorkey);
106+
}
107+
return array;
108+
}
109109

110-
public byte[] DecryptUexpBytes(byte[] uexp, AC7XorKey xorkey)
111-
{
112-
if (xorkey == null)
113-
{
114-
return uexp;
115-
}
116-
byte[] array = new byte[uexp.Length];
117-
for (int i = 0; i < array.Length; i++)
118-
{
119-
array[i] = GetXorByte(uexp[i], ref xorkey);
120-
}
121-
array[array.Length - 4] = 193;
122-
array[array.Length - 3] = 131;
123-
array[array.Length - 2] = 42;
124-
array[array.Length - 1] = 158;
125-
return array;
126-
}
110+
public byte[] DecryptUexpBytes(byte[] uexp, AC7XorKey xorkey)
111+
{
112+
if (xorkey == null)
113+
{
114+
return uexp;
115+
}
116+
byte[] array = new byte[uexp.Length];
117+
for (int i = 0; i < array.Length; i++)
118+
{
119+
array[i] = GetXorByte(uexp[i], ref xorkey);
120+
}
121+
array[array.Length - 4] = 193;
122+
array[array.Length - 3] = 131;
123+
array[array.Length - 2] = 42;
124+
array[array.Length - 1] = 158;
125+
return array;
126+
}
127127

128-
// Unsure if this works or not, feel free to modify & PR
129-
public byte[] EncryptUexpBytes(byte[] uexp, AC7XorKey xorkey)
130-
{
131-
byte[] array = new byte[uexp.Length + 4];
132-
for (int i = 0; i < uexp.Length; i++)
133-
{
134-
array[i] = GetXorByte(uexp[i], ref xorkey);
135-
}
136-
for (int j = uexp.Length; j < array.Length; j++)
137-
{
138-
array[j] = GetXorByte(0, ref xorkey);
139-
}
140-
return array;
141-
}
128+
// Unsure if this works or not, feel free to modify & PR
129+
public byte[] EncryptUexpBytes(byte[] uexp, AC7XorKey xorkey)
130+
{
131+
byte[] array = new byte[uexp.Length + 4];
132+
for (int i = 0; i < uexp.Length; i++)
133+
{
134+
array[i] = GetXorByte(uexp[i], ref xorkey);
135+
}
136+
for (int j = uexp.Length; j < array.Length; j++)
137+
{
138+
array[j] = GetXorByte(0, ref xorkey);
139+
}
140+
return array;
141+
}
142142

143-
public static AC7XorKey GetXorKey(string fname)
144-
{
145-
AC7XorKey key = new AC7XorKey(CalcNameKey(fname), 4);
146-
CalcPKeyFromNKey(key.NameKey, key.Offset, out key.pk1, out key.pk2);
147-
return key;
148-
}
143+
public static AC7XorKey GetXorKey(string fname)
144+
{
145+
AC7XorKey key = new AC7XorKey(CalcNameKey(fname), 4);
146+
CalcPKeyFromNKey(key.NameKey, key.Offset, out key.pk1, out key.pk2);
147+
return key;
148+
}
149149

150-
private static int CalcNameKey(string fname)
151-
{
152-
fname = fname.ToUpper();
153-
int num = 0;
154-
for (int i = 0; i < fname.Length; i++)
155-
{
156-
int num2 = (byte)fname[i];
157-
num ^= num2;
158-
num2 = num * 8;
159-
num2 ^= num;
160-
int num3 = num + num;
161-
num2 = ~num2;
162-
num2 = (num2 >> 7) & 1;
163-
num = num2 | num3;
164-
}
165-
return num;
166-
}
150+
private static int CalcNameKey(string fname)
151+
{
152+
fname = fname.ToUpper();
153+
int num = 0;
154+
for (int i = 0; i < fname.Length; i++)
155+
{
156+
int num2 = (byte)fname[i];
157+
num ^= num2;
158+
num2 = num * 8;
159+
num2 ^= num;
160+
int num3 = num + num;
161+
num2 = ~num2;
162+
num2 = (num2 >> 7) & 1;
163+
num = num2 | num3;
164+
}
165+
return num;
166+
}
167167

168-
private static void CalcPKeyFromNKey(int nkey, int dataoffset, out int pk1, out int pk2)
169-
{
170-
long num = (uint)((long)nkey * 7L);
171-
System.Numerics.BigInteger bigInteger = new System.Numerics.BigInteger(5440514381186227205L);
172-
num += dataoffset;
173-
System.Numerics.BigInteger bigInteger2 = bigInteger * num;
174-
long num2 = (long)(bigInteger2 >> 70);
175-
long num3 = num2 >> 63;
176-
num2 += num3;
177-
num3 = num2 * 217;
178-
num -= num3;
179-
pk1 = (int)(num & 0xFFFFFFFFu);
180-
long num4 = (uint)((long)nkey * 11L);
181-
num4 += dataoffset;
182-
num2 = 0L;
183-
num2 &= 0x3FF;
184-
num4 += num2;
185-
num4 &= 0x3FF;
186-
long num5 = num4 - num2;
187-
pk2 = (int)(num5 & 0xFFFFFFFFu);
188-
}
168+
private static void CalcPKeyFromNKey(int nkey, int dataoffset, out int pk1, out int pk2)
169+
{
170+
long num = (uint)((long)nkey * 7L);
171+
System.Numerics.BigInteger bigInteger = new System.Numerics.BigInteger(5440514381186227205L);
172+
num += dataoffset;
173+
System.Numerics.BigInteger bigInteger2 = bigInteger * num;
174+
long num2 = (long)(bigInteger2 >> 70);
175+
long num3 = num2 >> 63;
176+
num2 += num3;
177+
num3 = num2 * 217;
178+
num -= num3;
179+
pk1 = (int)(num & 0xFFFFFFFFu);
180+
long num4 = (uint)((long)nkey * 11L);
181+
num4 += dataoffset;
182+
num2 = 0L;
183+
num2 &= 0x3FF;
184+
num4 += num2;
185+
num4 &= 0x3FF;
186+
long num5 = num4 - num2;
187+
pk2 = (int)(num5 & 0xFFFFFFFFu);
188+
}
189189

190-
private static byte GetXorByte(byte tagb, ref AC7XorKey xorkey)
191-
{
192-
if (xorkey == null)
193-
{
194-
return tagb;
195-
}
196-
tagb = (byte)((uint)(tagb ^ AC7FullKey[xorkey.pk1 * 1024 + xorkey.pk2]) ^ 0x77u);
197-
xorkey.pk1++;
198-
xorkey.pk2++;
199-
if (xorkey.pk1 >= 217)
200-
{
201-
xorkey.pk1 = 0;
202-
}
203-
if (xorkey.pk2 >= 1024)
204-
{
205-
xorkey.pk2 = 0;
206-
}
207-
return tagb;
208-
}
209-
}
190+
private static byte GetXorByte(byte tagb, ref AC7XorKey xorkey)
191+
{
192+
if (xorkey == null)
193+
{
194+
return tagb;
195+
}
196+
tagb = (byte)((uint)(tagb ^ AC7FullKey[xorkey.pk1 * 1024 + xorkey.pk2]) ^ 0x77u);
197+
xorkey.pk1++;
198+
xorkey.pk2++;
199+
if (xorkey.pk1 >= 217)
200+
{
201+
xorkey.pk1 = 0;
202+
}
203+
if (xorkey.pk2 >= 1024)
204+
{
205+
xorkey.pk2 = 0;
206+
}
207+
return tagb;
208+
}
209+
}
210210
}

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