aaru-dps/Aaru.Checksums
1
0
Fork 0
mirror of https://github.com/aaru-dps/Aaru.Checksums.git synced 2025-12-16 19:24:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Reformatted.

Browse Source
This commit is contained in:
Natalia Portillo
2016-04-19 02:11:47 +01:00
parent 690e35e931
commit 344a45b3fa
14 changed files with 299 additions and 299 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
Adler32Context.cs
View File

@@ -62,7 +62,7 @@ namespace DiscImageChef.Checksums
/// <param name="len">Length of buffer to hash.</param> /// <param name="len">Length of buffer to hash.</param>
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
{ {
sum1 = (ushort)((sum1 + data[i]) % AdlerModule); sum1 = (ushort)((sum1 + data[i]) % AdlerModule);
sum2 = (ushort)((sum2 + sum1) % AdlerModule); sum2 = (ushort)((sum2 + sum1) % AdlerModule);
@@ -95,7 +95,7 @@ namespace DiscImageChef.Checksums
UInt32 finalSum = (uint)((sum2 << 16) | sum1); UInt32 finalSum = (uint)((sum2 << 16) | sum1);
StringBuilder adlerOutput = new StringBuilder(); StringBuilder adlerOutput = new StringBuilder();
for (int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++)
{ {
adlerOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2")); adlerOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2"));
} }
@@ -137,7 +137,7 @@ namespace DiscImageChef.Checksums
StringBuilder adlerOutput = new StringBuilder(); StringBuilder adlerOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
adlerOutput.Append(hash[i].ToString("x2")); adlerOutput.Append(hash[i].ToString("x2"));
} }
@@ -159,7 +159,7 @@ namespace DiscImageChef.Checksums
localSum1 = 1; localSum1 = 1;
localSum2 = 0; localSum2 = 0;
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
{ {
localSum1 = (ushort)((localSum1 + data[i]) % AdlerModule); localSum1 = (ushort)((localSum1 + data[i]) % AdlerModule);
localSum2 = (ushort)((localSum2 + localSum1) % AdlerModule); localSum2 = (ushort)((localSum2 + localSum1) % AdlerModule);
@@ -171,7 +171,7 @@ namespace DiscImageChef.Checksums
StringBuilder adlerOutput = new StringBuilder(); StringBuilder adlerOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
adlerOutput.Append(hash[i].ToString("x2")); adlerOutput.Append(hash[i].ToString("x2"));
} }

156
CDChecksums.cs
View File

@@ -50,7 +50,7 @@ namespace DiscImageChef.Checksums
public static bool? CheckCDSector(byte[] buffer) public static bool? CheckCDSector(byte[] buffer)
{ {
switch (buffer.Length) switch(buffer.Length)
{ {
case 2448: case 2448:
{ {
@@ -64,15 +64,15 @@ namespace DiscImageChef.Checksums
bool? subchannelStatus = CheckCDSectorSubChannel(subchannel); bool? subchannelStatus = CheckCDSectorSubChannel(subchannel);
bool? status = null; bool? status = null;
if (channelStatus == null && subchannelStatus == null) if(channelStatus == null && subchannelStatus == null)
status = null; status = null;
if (channelStatus == false || subchannelStatus == false) if(channelStatus == false || subchannelStatus == false)
status = false; status = false;
if (channelStatus == null && subchannelStatus == true) if(channelStatus == null && subchannelStatus == true)
status = true; status = true;
if (channelStatus == true && subchannelStatus == null) if(channelStatus == true && subchannelStatus == null)
status = true; status = true;
if (channelStatus == true && subchannelStatus == true) if(channelStatus == true && subchannelStatus == true)
status = true; status = true;
return status; return status;
@@ -89,7 +89,7 @@ namespace DiscImageChef.Checksums
ECC_F_Table = new byte[256]; ECC_F_Table = new byte[256];
ECC_B_Table = new byte[256]; ECC_B_Table = new byte[256];
for (UInt32 i = 0; i < 256; i++) for(UInt32 i = 0; i < 256; i++)
{ {
UInt32 j = (uint)((i << 1) ^ ((i & 0x80) == 0x80 ? 0x11D : 0)); UInt32 j = (uint)((i << 1) ^ ((i & 0x80) == 0x80 ? 0x11D : 0));
ECC_F_Table[i] = (byte)j; ECC_F_Table[i] = (byte)j;
@@ -109,16 +109,16 @@ namespace DiscImageChef.Checksums
{ {
UInt32 size = major_count * minor_count; UInt32 size = major_count * minor_count;
UInt32 major; UInt32 major;
for (major = 0; major < major_count; major++) for(major = 0; major < major_count; major++)
{ {
UInt32 index = (major >> 1) * major_mult + (major & 1); UInt32 index = (major >> 1) * major_mult + (major & 1);
byte ecc_a = 0; byte ecc_a = 0;
byte ecc_b = 0; byte ecc_b = 0;
UInt32 minor; UInt32 minor;
for (minor = 0; minor < minor_count; minor++) for(minor = 0; minor < minor_count; minor++)
{ {
byte temp; byte temp;
if (index < 4) if(index < 4)
{ {
temp = address[index]; temp = address[index];
} }
@@ -127,7 +127,7 @@ namespace DiscImageChef.Checksums
temp = data[index - 4]; temp = data[index - 4];
} }
index += minor_inc; index += minor_inc;
if (index >= size) if(index >= size)
{ {
index -= size; index -= size;
} }
@@ -136,7 +136,7 @@ namespace DiscImageChef.Checksums
ecc_a = ECC_F_Table[ecc_a]; ecc_a = ECC_F_Table[ecc_a];
} }
ecc_a = ECC_B_Table[ECC_F_Table[ecc_a] ^ ecc_b]; ecc_a = ECC_B_Table[ECC_F_Table[ecc_a] ^ ecc_b];
if ( if(
ecc[major] != (ecc_a) || ecc[major] != (ecc_a) ||
ecc[major + major_count] != (ecc_a ^ ecc_b)) ecc[major + major_count] != (ecc_a ^ ecc_b))
{ {
@@ -150,7 +150,7 @@ namespace DiscImageChef.Checksums
{ {
ECCInit(); ECCInit();
if ( if(
channel[0x000] == 0x00 && // sync (12 bytes) channel[0x000] == 0x00 && // sync (12 bytes)
channel[0x001] == 0xFF && channel[0x001] == 0xFF &&
channel[0x002] == 0xFF && channel[0x002] == 0xFF &&
@@ -166,12 +166,12 @@ namespace DiscImageChef.Checksums
{ {
DicConsole.DebugWriteLine("CD checksums", "Data sector, address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Data sector, address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
if (channel[0x00F] == 0x00) // mode (1 byte) if(channel[0x00F] == 0x00) // mode (1 byte)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 0 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 0 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
for (int i = 0x010; i < 0x930; i++) for(int i = 0x010; i < 0x930; i++)
{ {
if (channel[i] != 0x00) if(channel[i] != 0x00)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 0 sector with error at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 0 sector with error at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
return false; return false;
@@ -179,11 +179,11 @@ namespace DiscImageChef.Checksums
} }
return true; return true;
} }
else if (channel[0x00F] == 0x01) // mode (1 byte) else if(channel[0x00F] == 0x01) // mode (1 byte)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
if (channel[0x814] != 0x00 || // reserved (8 bytes) if(channel[0x814] != 0x00 || // reserved (8 bytes)
channel[0x815] != 0x00 || channel[0x815] != 0x00 ||
channel[0x816] != 0x00 || channel[0x816] != 0x00 ||
channel[0x817] != 0x00 || channel[0x817] != 0x00 ||
@@ -211,12 +211,12 @@ namespace DiscImageChef.Checksums
bool FailedECC_P = CheckECC(address, data, 86, 24, 2, 86, ecc_p); bool FailedECC_P = CheckECC(address, data, 86, 24, 2, 86, ecc_p);
bool FailedECC_Q = CheckECC(address, data2, 52, 43, 86, 88, ecc_q); bool FailedECC_Q = CheckECC(address, data2, 52, 43, 86, 88, ecc_q);
if (FailedECC_P) if(FailedECC_P)
DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC P check", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC P check", channel[0x00C], channel[0x00D], channel[0x00E]);
if (FailedECC_Q) if(FailedECC_Q)
DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC Q check", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC Q check", channel[0x00C], channel[0x00D], channel[0x00E]);
if (FailedECC_P || FailedECC_Q) if(FailedECC_P || FailedECC_Q)
return false; return false;
byte[] SectorForCheck = new byte[0x810]; byte[] SectorForCheck = new byte[0x810];
@@ -226,7 +226,7 @@ namespace DiscImageChef.Checksums
CRC32Context.Data(SectorForCheck, 0x810, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed); CRC32Context.Data(SectorForCheck, 0x810, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed);
UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0); UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0);
if (CalculatedEDC != StoredEDC) if(CalculatedEDC != StoredEDC)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC); DicConsole.DebugWriteLine("CD checksums", "Mode 1 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC);
return false; return false;
@@ -234,13 +234,13 @@ namespace DiscImageChef.Checksums
return true; return true;
} }
else if (channel[0x00F] == 0x02) // mode (1 byte) else if(channel[0x00F] == 0x02) // mode (1 byte)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 2 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 2 sector at address {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
if ((channel[0x012] & 0x20) == 0x20) // mode 2 form 2 if((channel[0x012] & 0x20) == 0x20) // mode 2 form 2
{ {
if (channel[0x010] != channel[0x014] || channel[0x011] != channel[0x015] || channel[0x012] != channel[0x016] || channel[0x013] != channel[0x017]) if(channel[0x010] != channel[0x014] || channel[0x011] != channel[0x015] || channel[0x012] != channel[0x016] || channel[0x013] != channel[0x017])
{ {
DicConsole.DebugWriteLine("CD checksums", "Subheader copies differ in mode 2 form 2 sector at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Subheader copies differ in mode 2 form 2 sector at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
} }
@@ -252,7 +252,7 @@ namespace DiscImageChef.Checksums
CRC32Context.Data(SectorForCheck, 0x91C, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed); CRC32Context.Data(SectorForCheck, 0x91C, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed);
UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0); UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0);
if (CalculatedEDC != StoredEDC && StoredEDC != 0x00000000) if(CalculatedEDC != StoredEDC && StoredEDC != 0x00000000)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 2 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC); DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 2 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC);
return false; return false;
@@ -260,7 +260,7 @@ namespace DiscImageChef.Checksums
} }
else else
{ {
if (channel[0x010] != channel[0x014] || channel[0x011] != channel[0x015] || channel[0x012] != channel[0x016] || channel[0x013] != channel[0x017]) if(channel[0x010] != channel[0x014] || channel[0x011] != channel[0x015] || channel[0x012] != channel[0x016] || channel[0x013] != channel[0x017])
{ {
DicConsole.DebugWriteLine("CD checksums", "Subheader copies differ in mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Subheader copies differ in mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}", channel[0x00C], channel[0x00D], channel[0x00E]);
} }
@@ -283,12 +283,12 @@ namespace DiscImageChef.Checksums
bool FailedECC_P = CheckECC(address, data, 86, 24, 2, 86, ecc_p); bool FailedECC_P = CheckECC(address, data, 86, 24, 2, 86, ecc_p);
bool FailedECC_Q = CheckECC(address, data2, 52, 43, 86, 88, ecc_q); bool FailedECC_Q = CheckECC(address, data2, 52, 43, 86, 88, ecc_q);
if (FailedECC_P) if(FailedECC_P)
DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC P check", channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC P check", channel[0x00C], channel[0x00D], channel[0x00E]);
if (FailedECC_Q) if(FailedECC_Q)
DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC Q check", channel[0x00F], channel[0x00C], channel[0x00D], channel[0x00E]); DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, fails ECC Q check", channel[0x00F], channel[0x00C], channel[0x00D], channel[0x00E]);
if (FailedECC_P || FailedECC_Q) if(FailedECC_P || FailedECC_Q)
return false; return false;
byte[] SectorForCheck = new byte[0x808]; byte[] SectorForCheck = new byte[0x808];
@@ -298,7 +298,7 @@ namespace DiscImageChef.Checksums
CRC32Context.Data(SectorForCheck, 0x808, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed); CRC32Context.Data(SectorForCheck, 0x808, out CalculatedEDCBytes, CDCRC32Poly, CDCRC32Seed);
UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0); UInt32 CalculatedEDC = BitConverter.ToUInt32(CalculatedEDCBytes, 0);
if (CalculatedEDC != StoredEDC) if(CalculatedEDC != StoredEDC)
{ {
DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC); DicConsole.DebugWriteLine("CD checksums", "Mode 2 form 1 sector at address: {0:X2}:{1:X2}:{2:X2}, got CRC 0x{3:X8} expected 0x{4:X8}", channel[0x00C], channel[0x00D], channel[0x00E], CalculatedEDC, StoredEDC);
return false; return false;
@@ -330,16 +330,16 @@ namespace DiscImageChef.Checksums
byte[] CDSubRWPack4 = new byte[24]; byte[] CDSubRWPack4 = new byte[24];
int i = 0; int i = 0;
for (int j = 0; j < 12; j++) for(int j = 0; j < 12; j++)
QSubChannel[j] = 0; QSubChannel[j] = 0;
for (int j = 0; j < 18; j++) for(int j = 0; j < 18; j++)
{ {
CDTextPack1[j] = 0; CDTextPack1[j] = 0;
CDTextPack2[j] = 0; CDTextPack2[j] = 0;
CDTextPack3[j] = 0; CDTextPack3[j] = 0;
CDTextPack4[j] = 0; CDTextPack4[j] = 0;
} }
for (int j = 0; j < 24; j++) for(int j = 0; j < 24; j++)
{ {
CDSubRWPack1[j] = 0; CDSubRWPack1[j] = 0;
CDSubRWPack2[j] = 0; CDSubRWPack2[j] = 0;
@@ -347,7 +347,7 @@ namespace DiscImageChef.Checksums
CDSubRWPack4[j] = 0; CDSubRWPack4[j] = 0;
} }
for (int j = 0; j < 12; j++) for(int j = 0; j < 12; j++)
{ {
QSubChannel[j] = (byte)(QSubChannel[j] | ((subchannel[i++] & 0x40) << 1)); QSubChannel[j] = (byte)(QSubChannel[j] | ((subchannel[i++] & 0x40) << 1));
QSubChannel[j] = (byte)(QSubChannel[j] | (subchannel[i++] & 0x40)); QSubChannel[j] = (byte)(QSubChannel[j] | (subchannel[i++] & 0x40));
@@ -360,86 +360,86 @@ namespace DiscImageChef.Checksums
} }
i = 0; i = 0;
for (int j = 0; j < 18; j++) for(int j = 0; j < 18; j++)
{ {
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x3F) << 2)); CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x3F) << 2));
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j++] | ((subchannel[i] & 0xC0) >> 4)); CDTextPack1[j] = (byte)(CDTextPack1[j++] | ((subchannel[i] & 0xC0) >> 4));
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x0F) << 4)); CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x0F) << 4));
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j++] | ((subchannel[i] & 0x3C) >> 2)); CDTextPack1[j] = (byte)(CDTextPack1[j++] | ((subchannel[i] & 0x3C) >> 2));
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x03) << 6)); CDTextPack1[j] = (byte)(CDTextPack1[j] | ((subchannel[i++] & 0x03) << 6));
if (j < 18) if(j < 18)
CDTextPack1[j] = (byte)(CDTextPack1[j] | (subchannel[i++] & 0x3F)); CDTextPack1[j] = (byte)(CDTextPack1[j] | (subchannel[i++] & 0x3F));
} }
for (int j = 0; j < 18; j++) for(int j = 0; j < 18; j++)
{ {
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x3F) << 2)); CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x3F) << 2));
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j++] | ((subchannel[i] & 0xC0) >> 4)); CDTextPack2[j] = (byte)(CDTextPack2[j++] | ((subchannel[i] & 0xC0) >> 4));
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x0F) << 4)); CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x0F) << 4));
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j++] | ((subchannel[i] & 0x3C) >> 2)); CDTextPack2[j] = (byte)(CDTextPack2[j++] | ((subchannel[i] & 0x3C) >> 2));
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x03) << 6)); CDTextPack2[j] = (byte)(CDTextPack2[j] | ((subchannel[i++] & 0x03) << 6));
if (j < 18) if(j < 18)
CDTextPack2[j] = (byte)(CDTextPack2[j] | (subchannel[i++] & 0x3F)); CDTextPack2[j] = (byte)(CDTextPack2[j] | (subchannel[i++] & 0x3F));
} }
for (int j = 0; j < 18; j++) for(int j = 0; j < 18; j++)
{ {
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x3F) << 2)); CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x3F) << 2));
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j++] | ((subchannel[i] & 0xC0) >> 4)); CDTextPack3[j] = (byte)(CDTextPack3[j++] | ((subchannel[i] & 0xC0) >> 4));
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x0F) << 4)); CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x0F) << 4));
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j++] | ((subchannel[i] & 0x3C) >> 2)); CDTextPack3[j] = (byte)(CDTextPack3[j++] | ((subchannel[i] & 0x3C) >> 2));
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x03) << 6)); CDTextPack3[j] = (byte)(CDTextPack3[j] | ((subchannel[i++] & 0x03) << 6));
if (j < 18) if(j < 18)
CDTextPack3[j] = (byte)(CDTextPack3[j] | (subchannel[i++] & 0x3F)); CDTextPack3[j] = (byte)(CDTextPack3[j] | (subchannel[i++] & 0x3F));
} }
for (int j = 0; j < 18; j++) for(int j = 0; j < 18; j++)
{ {
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x3F) << 2)); CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x3F) << 2));
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j++] | ((subchannel[i] & 0xC0) >> 4)); CDTextPack4[j] = (byte)(CDTextPack4[j++] | ((subchannel[i] & 0xC0) >> 4));
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x0F) << 4)); CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x0F) << 4));
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j++] | ((subchannel[i] & 0x3C) >> 2)); CDTextPack4[j] = (byte)(CDTextPack4[j++] | ((subchannel[i] & 0x3C) >> 2));
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x03) << 6)); CDTextPack4[j] = (byte)(CDTextPack4[j] | ((subchannel[i++] & 0x03) << 6));
if (j < 18) if(j < 18)
CDTextPack4[j] = (byte)(CDTextPack4[j] | (subchannel[i++] & 0x3F)); CDTextPack4[j] = (byte)(CDTextPack4[j] | (subchannel[i++] & 0x3F));
} }
i = 0; i = 0;
for (int j = 0; j < 24; j++) for(int j = 0; j < 24; j++)
{ {
CDSubRWPack1[j] = (byte)(subchannel[i++] & 0x3F); CDSubRWPack1[j] = (byte)(subchannel[i++] & 0x3F);
} }
for (int j = 0; j < 24; j++) for(int j = 0; j < 24; j++)
{ {
CDSubRWPack2[j] = (byte)(subchannel[i++] & 0x3F); CDSubRWPack2[j] = (byte)(subchannel[i++] & 0x3F);
} }
for (int j = 0; j < 24; j++) for(int j = 0; j < 24; j++)
{ {
CDSubRWPack3[j] = (byte)(subchannel[i++] & 0x3F); CDSubRWPack3[j] = (byte)(subchannel[i++] & 0x3F);
} }
for (int j = 0; j < 24; j++) for(int j = 0; j < 24; j++)
{ {
CDSubRWPack4[j] = (byte)(subchannel[i++] & 0x3F); CDSubRWPack4[j] = (byte)(subchannel[i++] & 0x3F);
} }
switch (CDSubRWPack1[0]) switch(CDSubRWPack1[0])
{ {
case 0x00: case 0x00:
DicConsole.DebugWriteLine("CD checksums", "Detected Zero Pack in subchannel"); DicConsole.DebugWriteLine("CD checksums", "Detected Zero Pack in subchannel");
@@ -474,27 +474,27 @@ namespace DiscImageChef.Checksums
Array.Copy(QSubChannel, 0, QSubChannelForCRC, 0, 10); Array.Copy(QSubChannel, 0, QSubChannelForCRC, 0, 10);
UInt16 CalculatedQCRC = CalculateCCITT_CRC16(QSubChannelForCRC); UInt16 CalculatedQCRC = CalculateCCITT_CRC16(QSubChannelForCRC);
if (QSubChannelCRC != CalculatedQCRC) if(QSubChannelCRC != CalculatedQCRC)
{ {
DicConsole.DebugWriteLine("CD checksums", "Q subchannel CRC 0x{0:X4}, expected 0x{1:X4}", CalculatedQCRC, QSubChannelCRC); DicConsole.DebugWriteLine("CD checksums", "Q subchannel CRC 0x{0:X4}, expected 0x{1:X4}", CalculatedQCRC, QSubChannelCRC);
status = false; status = false;
} }
if ((CDTextPack1[0] & 0x80) == 0x80) if((CDTextPack1[0] & 0x80) == 0x80)
{ {
UInt16 CDTextPack1CRC = BigEndianBitConverter.ToUInt16(CDTextPack1, 16); UInt16 CDTextPack1CRC = BigEndianBitConverter.ToUInt16(CDTextPack1, 16);
byte[] CDTextPack1ForCRC = new byte[16]; byte[] CDTextPack1ForCRC = new byte[16];
Array.Copy(CDTextPack1, 0, CDTextPack1ForCRC, 0, 16); Array.Copy(CDTextPack1, 0, CDTextPack1ForCRC, 0, 16);
UInt16 CalculatedCDTP1CRC = CalculateCCITT_CRC16(CDTextPack1ForCRC); UInt16 CalculatedCDTP1CRC = CalculateCCITT_CRC16(CDTextPack1ForCRC);
if (CDTextPack1CRC != CalculatedCDTP1CRC && CDTextPack1CRC != 0) if(CDTextPack1CRC != CalculatedCDTP1CRC && CDTextPack1CRC != 0)
{ {
DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 1 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack1CRC, CalculatedCDTP1CRC); DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 1 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack1CRC, CalculatedCDTP1CRC);
status = false; status = false;
} }
} }
if ((CDTextPack2[0] & 0x80) == 0x80) if((CDTextPack2[0] & 0x80) == 0x80)
{ {
UInt16 CDTextPack2CRC = BigEndianBitConverter.ToUInt16(CDTextPack2, 16); UInt16 CDTextPack2CRC = BigEndianBitConverter.ToUInt16(CDTextPack2, 16);
byte[] CDTextPack2ForCRC = new byte[16]; byte[] CDTextPack2ForCRC = new byte[16];
@@ -502,14 +502,14 @@ namespace DiscImageChef.Checksums
UInt16 CalculatedCDTP2CRC = CalculateCCITT_CRC16(CDTextPack2ForCRC); UInt16 CalculatedCDTP2CRC = CalculateCCITT_CRC16(CDTextPack2ForCRC);
DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP2 0x{0:X4}, Calc CDTP2 0x{1:X4}", CDTextPack2CRC, CalculatedCDTP2CRC); DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP2 0x{0:X4}, Calc CDTP2 0x{1:X4}", CDTextPack2CRC, CalculatedCDTP2CRC);
if (CDTextPack2CRC != CalculatedCDTP2CRC && CDTextPack2CRC != 0) if(CDTextPack2CRC != CalculatedCDTP2CRC && CDTextPack2CRC != 0)
{ {
DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 2 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack2CRC, CalculatedCDTP2CRC); DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 2 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack2CRC, CalculatedCDTP2CRC);
status = false; status = false;
} }
} }
if ((CDTextPack3[0] & 0x80) == 0x80) if((CDTextPack3[0] & 0x80) == 0x80)
{ {
UInt16 CDTextPack3CRC = BigEndianBitConverter.ToUInt16(CDTextPack3, 16); UInt16 CDTextPack3CRC = BigEndianBitConverter.ToUInt16(CDTextPack3, 16);
byte[] CDTextPack3ForCRC = new byte[16]; byte[] CDTextPack3ForCRC = new byte[16];
@@ -517,14 +517,14 @@ namespace DiscImageChef.Checksums
UInt16 CalculatedCDTP3CRC = CalculateCCITT_CRC16(CDTextPack3ForCRC); UInt16 CalculatedCDTP3CRC = CalculateCCITT_CRC16(CDTextPack3ForCRC);
DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP3 0x{0:X4}, Calc CDTP3 0x{1:X4}", CDTextPack3CRC, CalculatedCDTP3CRC); DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP3 0x{0:X4}, Calc CDTP3 0x{1:X4}", CDTextPack3CRC, CalculatedCDTP3CRC);
if (CDTextPack3CRC != CalculatedCDTP3CRC && CDTextPack3CRC != 0) if(CDTextPack3CRC != CalculatedCDTP3CRC && CDTextPack3CRC != 0)
{ {
DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 3 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack3CRC, CalculatedCDTP3CRC); DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 3 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack3CRC, CalculatedCDTP3CRC);
status = false; status = false;
} }
} }
if ((CDTextPack4[0] & 0x80) == 0x80) if((CDTextPack4[0] & 0x80) == 0x80)
{ {
UInt16 CDTextPack4CRC = BigEndianBitConverter.ToUInt16(CDTextPack4, 16); UInt16 CDTextPack4CRC = BigEndianBitConverter.ToUInt16(CDTextPack4, 16);
byte[] CDTextPack4ForCRC = new byte[16]; byte[] CDTextPack4ForCRC = new byte[16];
@@ -532,7 +532,7 @@ namespace DiscImageChef.Checksums
UInt16 CalculatedCDTP4CRC = CalculateCCITT_CRC16(CDTextPack4ForCRC); UInt16 CalculatedCDTP4CRC = CalculateCCITT_CRC16(CDTextPack4ForCRC);
DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP4 0x{0:X4}, Calc CDTP4 0x{1:X4}", CDTextPack4CRC, CalculatedCDTP4CRC); DicConsole.DebugWriteLine("CD checksums", "Cyclic CDTP4 0x{0:X4}, Calc CDTP4 0x{1:X4}", CDTextPack4CRC, CalculatedCDTP4CRC);
if (CDTextPack4CRC != CalculatedCDTP4CRC && CDTextPack4CRC != 0) if(CDTextPack4CRC != CalculatedCDTP4CRC && CDTextPack4CRC != 0)
{ {
DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 4 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack4CRC, CalculatedCDTP4CRC); DicConsole.DebugWriteLine("CD checksums", "CD-Text Pack 4 CRC 0x{0:X4}, expected 0x{1:X4}", CDTextPack4CRC, CalculatedCDTP4CRC);
status = false; status = false;
@@ -581,7 +581,7 @@ namespace DiscImageChef.Checksums
static ushort CalculateCCITT_CRC16(byte[] buffer) static ushort CalculateCCITT_CRC16(byte[] buffer)
{ {
UInt16 CRC16 = 0; UInt16 CRC16 = 0;
for (int i = 0; i < buffer.Length; i++) for(int i = 0; i < buffer.Length; i++)
{ {
CRC16 = (ushort)(CCITT_CRC16Table[(CRC16 >> 8) ^ buffer[i]] ^ (CRC16 << 8)); CRC16 = (ushort)(CCITT_CRC16Table[(CRC16 >> 8) ^ buffer[i]] ^ (CRC16 << 8));
} }

30
CRC16Context.cs
View File

@@ -60,11 +60,11 @@ namespace DiscImageChef.Checksums
hashInt = crc16Seed; hashInt = crc16Seed;
table = new UInt16[256]; table = new UInt16[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt16 entry = (UInt16)i; UInt16 entry = (UInt16)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (ushort)((entry >> 1) ^ crc16Poly); entry = (ushort)((entry >> 1) ^ crc16Poly);
else else
entry = (ushort)(entry >> 1); entry = (ushort)(entry >> 1);
@@ -79,7 +79,7 @@ namespace DiscImageChef.Checksums
/// <param name="len">Length of buffer to hash.</param> /// <param name="len">Length of buffer to hash.</param>
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
hashInt = (ushort)((hashInt >> 8) ^ table[data[i] ^ (hashInt & 0xFF)]); hashInt = (ushort)((hashInt >> 8) ^ table[data[i] ^ (hashInt & 0xFF)]);
} }
@@ -111,7 +111,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc16Output = new StringBuilder(); StringBuilder crc16Output = new StringBuilder();
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
for (int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++)
{ {
crc16Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2")); crc16Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2"));
} }
@@ -144,18 +144,18 @@ namespace DiscImageChef.Checksums
localhashInt = crc16Seed; localhashInt = crc16Seed;
localTable = new UInt16[256]; localTable = new UInt16[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt16 entry = (UInt16)i; UInt16 entry = (UInt16)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (ushort)((entry >> 1) ^ crc16Poly); entry = (ushort)((entry >> 1) ^ crc16Poly);
else else
entry = (ushort)(entry >> 1); entry = (ushort)(entry >> 1);
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < fileStream.Length; i++) for(int i = 0; i < fileStream.Length; i++)
localhashInt = (ushort)((localhashInt >> 8) ^ localTable[fileStream.ReadByte() ^ localhashInt & 0xff]); localhashInt = (ushort)((localhashInt >> 8) ^ localTable[fileStream.ReadByte() ^ localhashInt & 0xff]);
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
@@ -163,7 +163,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc16Output = new StringBuilder(); StringBuilder crc16Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc16Output.Append(hash[i].ToString("x2")); crc16Output.Append(hash[i].ToString("x2"));
} }
@@ -198,18 +198,18 @@ namespace DiscImageChef.Checksums
localhashInt = seed; localhashInt = seed;
localTable = new UInt16[256]; localTable = new UInt16[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt16 entry = (UInt16)i; UInt16 entry = (UInt16)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (ushort)((entry >> 1) ^ polynomial); entry = (ushort)((entry >> 1) ^ polynomial);
else else
entry = (ushort)(entry >> 1); entry = (ushort)(entry >> 1);
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
localhashInt = (ushort)((localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff]); localhashInt = (ushort)((localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff]);
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
@@ -217,7 +217,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc16Output = new StringBuilder(); StringBuilder crc16Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc16Output.Append(hash[i].ToString("x2")); crc16Output.Append(hash[i].ToString("x2"));
} }

30
CRC32Context.cs
View File

@@ -60,11 +60,11 @@ namespace DiscImageChef.Checksums
hashInt = crc32Seed; hashInt = crc32Seed;
table = new UInt32[256]; table = new UInt32[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt32 entry = (UInt32)i; UInt32 entry = (UInt32)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ crc32Poly; entry = (entry >> 1) ^ crc32Poly;
else else
entry = entry >> 1; entry = entry >> 1;
@@ -79,7 +79,7 @@ namespace DiscImageChef.Checksums
/// <param name="len">Length of buffer to hash.</param> /// <param name="len">Length of buffer to hash.</param>
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
hashInt = (hashInt >> 8) ^ table[data[i] ^ hashInt & 0xff]; hashInt = (hashInt >> 8) ^ table[data[i] ^ hashInt & 0xff];
} }
@@ -111,7 +111,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc32Output = new StringBuilder(); StringBuilder crc32Output = new StringBuilder();
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
for (int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++)
{ {
crc32Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2")); crc32Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2"));
} }
@@ -144,18 +144,18 @@ namespace DiscImageChef.Checksums
localhashInt = crc32Seed; localhashInt = crc32Seed;
localTable = new UInt32[256]; localTable = new UInt32[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt32 entry = (UInt32)i; UInt32 entry = (UInt32)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ crc32Poly; entry = (entry >> 1) ^ crc32Poly;
else else
entry = entry >> 1; entry = entry >> 1;
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < fileStream.Length; i++) for(int i = 0; i < fileStream.Length; i++)
localhashInt = (localhashInt >> 8) ^ localTable[fileStream.ReadByte() ^ localhashInt & 0xff]; localhashInt = (localhashInt >> 8) ^ localTable[fileStream.ReadByte() ^ localhashInt & 0xff];
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
@@ -163,7 +163,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc32Output = new StringBuilder(); StringBuilder crc32Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc32Output.Append(hash[i].ToString("x2")); crc32Output.Append(hash[i].ToString("x2"));
} }
@@ -198,18 +198,18 @@ namespace DiscImageChef.Checksums
localhashInt = seed; localhashInt = seed;
localTable = new UInt32[256]; localTable = new UInt32[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt32 entry = (UInt32)i; UInt32 entry = (UInt32)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial; entry = (entry >> 1) ^ polynomial;
else else
entry = entry >> 1; entry = entry >> 1;
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff]; localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff];
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
@@ -217,7 +217,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc32Output = new StringBuilder(); StringBuilder crc32Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc32Output.Append(hash[i].ToString("x2")); crc32Output.Append(hash[i].ToString("x2"));
} }

30
CRC64Context.cs
View File

@@ -59,11 +59,11 @@ namespace DiscImageChef.Checksums
hashInt = crc64Seed; hashInt = crc64Seed;
table = new UInt64[256]; table = new UInt64[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt64 entry = (UInt64)i; UInt64 entry = (UInt64)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ crc64Poly; entry = (entry >> 1) ^ crc64Poly;
else else
entry = entry >> 1; entry = entry >> 1;
@@ -78,7 +78,7 @@ namespace DiscImageChef.Checksums
/// <param name="len">Length of buffer to hash.</param> /// <param name="len">Length of buffer to hash.</param>
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
hashInt = (hashInt >> 8) ^ table[data[i] ^ hashInt & 0xff]; hashInt = (hashInt >> 8) ^ table[data[i] ^ hashInt & 0xff];
} }
@@ -110,7 +110,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc64Output = new StringBuilder(); StringBuilder crc64Output = new StringBuilder();
BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian;
for (int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(hashInt).Length; i++)
{ {
crc64Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2")); crc64Output.Append(BigEndianBitConverter.GetBytes(hashInt)[i].ToString("x2"));
} }
@@ -143,18 +143,18 @@ namespace DiscImageChef.Checksums
localhashInt = crc64Seed; localhashInt = crc64Seed;
localTable = new UInt64[256]; localTable = new UInt64[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt64 entry = (UInt64)i; UInt64 entry = (UInt64)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ crc64Poly; entry = (entry >> 1) ^ crc64Poly;
else else
entry = entry >> 1; entry = entry >> 1;
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < fileStream.Length; i++) for(int i = 0; i < fileStream.Length; i++)
localhashInt = (localhashInt >> 8) ^ localTable[(ulong)fileStream.ReadByte() ^ localhashInt & (ulong)0xff]; localhashInt = (localhashInt >> 8) ^ localTable[(ulong)fileStream.ReadByte() ^ localhashInt & (ulong)0xff];
BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian;
@@ -162,7 +162,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc64Output = new StringBuilder(); StringBuilder crc64Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc64Output.Append(hash[i].ToString("x2")); crc64Output.Append(hash[i].ToString("x2"));
} }
@@ -197,18 +197,18 @@ namespace DiscImageChef.Checksums
localhashInt = seed; localhashInt = seed;
localTable = new UInt64[256]; localTable = new UInt64[256];
for (int i = 0; i < 256; i++) for(int i = 0; i < 256; i++)
{ {
UInt64 entry = (UInt64)i; UInt64 entry = (UInt64)i;
for (int j = 0; j < 8; j++) for(int j = 0; j < 8; j++)
if ((entry & 1) == 1) if((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial; entry = (entry >> 1) ^ polynomial;
else else
entry = entry >> 1; entry = entry >> 1;
localTable[i] = entry; localTable[i] = entry;
} }
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff]; localhashInt = (localhashInt >> 8) ^ localTable[data[i] ^ localhashInt & 0xff];
BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian; BigEndianBitConverter.IsLittleEndian = BigEndianBitConverter.IsLittleEndian;
@@ -216,7 +216,7 @@ namespace DiscImageChef.Checksums
StringBuilder crc64Output = new StringBuilder(); StringBuilder crc64Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
crc64Output.Append(hash[i].ToString("x2")); crc64Output.Append(hash[i].ToString("x2"));
} }

44
FletcherContext.cs
View File

@@ -69,15 +69,15 @@ namespace DiscImageChef.Checksums
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
UInt16 block; UInt16 block;
if (!inodd) if(!inodd)
{ {
// Odd size // Odd size
if (len % 2 != 0) if(len % 2 != 0)
{ {
oddValue = data[len - 1]; oddValue = data[len - 1];
inodd = true; inodd = true;
for (int i = 0; i < len - 1; i += 2) for(int i = 0; i < len - 1; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
sum1 = (UInt16)((sum1 + block) % 0xFFFF); sum1 = (UInt16)((sum1 + block) % 0xFFFF);
@@ -87,7 +87,7 @@ namespace DiscImageChef.Checksums
else else
{ {
inodd = false; inodd = false;
for (int i = 0; i < len; i += 2) for(int i = 0; i < len; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
sum1 = (UInt16)((sum1 + block) % 0xFFFF); sum1 = (UInt16)((sum1 + block) % 0xFFFF);
@@ -107,12 +107,12 @@ namespace DiscImageChef.Checksums
sum2 = (UInt16)((sum2 + sum1) % 0xFFFF); sum2 = (UInt16)((sum2 + sum1) % 0xFFFF);
// Even size, carrying odd // Even size, carrying odd
if (len % 2 == 0) if(len % 2 == 0)
{ {
oddValue = data[len - 1]; oddValue = data[len - 1];
inodd = true; inodd = true;
for (int i = 1; i < len - 1; i += 2) for(int i = 1; i < len - 1; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
sum1 = (UInt16)((sum1 + block) % 0xFFFF); sum1 = (UInt16)((sum1 + block) % 0xFFFF);
@@ -122,7 +122,7 @@ namespace DiscImageChef.Checksums
else else
{ {
inodd = false; inodd = false;
for (int i = 1; i < len; i += 2) for(int i = 1; i < len; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
sum1 = (UInt16)((sum1 + block) % 0xFFFF); sum1 = (UInt16)((sum1 + block) % 0xFFFF);
@@ -158,7 +158,7 @@ namespace DiscImageChef.Checksums
UInt32 finalSum = (UInt32)(sum1 + (sum2 << 16)); UInt32 finalSum = (UInt32)(sum1 + (sum2 << 16));
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++)
{ {
fletcherOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2")); fletcherOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2"));
} }
@@ -193,9 +193,9 @@ namespace DiscImageChef.Checksums
localSum2 = 0xFFFF; localSum2 = 0xFFFF;
block = 0; block = 0;
if (fileStream.Length % 2 == 0) if(fileStream.Length % 2 == 0)
{ {
for (int i = 0; i < fileStream.Length; i += 2) for(int i = 0; i < fileStream.Length; i += 2)
{ {
blockBytes = new byte[2]; blockBytes = new byte[2];
fileStream.Read(blockBytes, 0, 2); fileStream.Read(blockBytes, 0, 2);
@@ -206,7 +206,7 @@ namespace DiscImageChef.Checksums
} }
else else
{ {
for (int i = 0; i < fileStream.Length - 1; i += 2) for(int i = 0; i < fileStream.Length - 1; i += 2)
{ {
blockBytes = new byte[2]; blockBytes = new byte[2];
fileStream.Read(blockBytes, 0, 2); fileStream.Read(blockBytes, 0, 2);
@@ -230,7 +230,7 @@ namespace DiscImageChef.Checksums
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
fletcherOutput.Append(hash[i].ToString("x2")); fletcherOutput.Append(hash[i].ToString("x2"));
} }
@@ -253,9 +253,9 @@ namespace DiscImageChef.Checksums
localSum2 = 0xFFFF; localSum2 = 0xFFFF;
block = 0; block = 0;
if (len % 2 == 0) if(len % 2 == 0)
{ {
for (int i = 0; i < len; i += 2) for(int i = 0; i < len; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
localSum1 = (UInt16)((localSum1 + block) % 0xFFFF); localSum1 = (UInt16)((localSum1 + block) % 0xFFFF);
@@ -264,7 +264,7 @@ namespace DiscImageChef.Checksums
} }
else else
{ {
for (int i = 0; i < len - 1; i += 2) for(int i = 0; i < len - 1; i += 2)
{ {
block = BigEndianBitConverter.ToUInt16(data, i); block = BigEndianBitConverter.ToUInt16(data, i);
localSum1 = (UInt16)((localSum1 + block) % 0xFFFF); localSum1 = (UInt16)((localSum1 + block) % 0xFFFF);
@@ -286,7 +286,7 @@ namespace DiscImageChef.Checksums
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
fletcherOutput.Append(hash[i].ToString("x2")); fletcherOutput.Append(hash[i].ToString("x2"));
} }
@@ -325,7 +325,7 @@ namespace DiscImageChef.Checksums
/// <param name="len">Length of buffer to hash.</param> /// <param name="len">Length of buffer to hash.</param>
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
{ {
sum1 = (byte)((sum1 + data[i]) % 0xFF); sum1 = (byte)((sum1 + data[i]) % 0xFF);
sum2 = (byte)((sum2 + sum1) % 0xFF); sum2 = (byte)((sum2 + sum1) % 0xFF);
@@ -358,7 +358,7 @@ namespace DiscImageChef.Checksums
UInt16 finalSum = (UInt16)(sum1 + (sum2 << 8)); UInt16 finalSum = (UInt16)(sum1 + (sum2 << 8));
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++) for(int i = 0; i < BigEndianBitConverter.GetBytes(finalSum).Length; i++)
{ {
fletcherOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2")); fletcherOutput.Append(BigEndianBitConverter.GetBytes(finalSum)[i].ToString("x2"));
} }
@@ -392,7 +392,7 @@ namespace DiscImageChef.Checksums
localSum2 = 0xFF; localSum2 = 0xFF;
block = 0; block = 0;
for (int i = 0; i < fileStream.Length; i += 2) for(int i = 0; i < fileStream.Length; i += 2)
{ {
block = (byte)fileStream.ReadByte(); block = (byte)fileStream.ReadByte();
localSum1 = (byte)((localSum1 + block) % 0xFF); localSum1 = (byte)((localSum1 + block) % 0xFF);
@@ -405,7 +405,7 @@ namespace DiscImageChef.Checksums
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
fletcherOutput.Append(hash[i].ToString("x2")); fletcherOutput.Append(hash[i].ToString("x2"));
} }
@@ -427,7 +427,7 @@ namespace DiscImageChef.Checksums
localSum1 = 0xFF; localSum1 = 0xFF;
localSum2 = 0xFF; localSum2 = 0xFF;
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
{ {
localSum1 = (byte)((localSum1 + data[i]) % 0xFF); localSum1 = (byte)((localSum1 + data[i]) % 0xFF);
localSum2 = (byte)((localSum2 + localSum1) % 0xFF); localSum2 = (byte)((localSum2 + localSum1) % 0xFF);
@@ -439,7 +439,7 @@ namespace DiscImageChef.Checksums
StringBuilder fletcherOutput = new StringBuilder(); StringBuilder fletcherOutput = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
fletcherOutput.Append(hash[i].ToString("x2")); fletcherOutput.Append(hash[i].ToString("x2"));
} }

6
MD5Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_md5Provider.TransformFinalBlock(new byte[0], 0, 0); _md5Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder md5Output = new StringBuilder(); StringBuilder md5Output = new StringBuilder();
for (int i = 0; i < _md5Provider.Hash.Length; i++) for(int i = 0; i < _md5Provider.Hash.Length; i++)
{ {
md5Output.Append(_md5Provider.Hash[i].ToString("x2")); md5Output.Append(_md5Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _md5Provider.ComputeHash(fileStream); hash = _md5Provider.ComputeHash(fileStream);
StringBuilder md5Output = new StringBuilder(); StringBuilder md5Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
md5Output.Append(hash[i].ToString("x2")); md5Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _md5Provider.ComputeHash(data, 0, (int)len); hash = _md5Provider.ComputeHash(data, 0, (int)len);
StringBuilder md5Output = new StringBuilder(); StringBuilder md5Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
md5Output.Append(hash[i].ToString("x2")); md5Output.Append(hash[i].ToString("x2"));
} }

6
RIPEMD160Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_ripemd160Provider.TransformFinalBlock(new byte[0], 0, 0); _ripemd160Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder ripemd160Output = new StringBuilder(); StringBuilder ripemd160Output = new StringBuilder();
for (int i = 0; i < _ripemd160Provider.Hash.Length; i++) for(int i = 0; i < _ripemd160Provider.Hash.Length; i++)
{ {
ripemd160Output.Append(_ripemd160Provider.Hash[i].ToString("x2")); ripemd160Output.Append(_ripemd160Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _ripemd160Provider.ComputeHash(fileStream); hash = _ripemd160Provider.ComputeHash(fileStream);
StringBuilder ripemd160Output = new StringBuilder(); StringBuilder ripemd160Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
ripemd160Output.Append(hash[i].ToString("x2")); ripemd160Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _ripemd160Provider.ComputeHash(data, 0, (int)len); hash = _ripemd160Provider.ComputeHash(data, 0, (int)len);
StringBuilder ripemd160Output = new StringBuilder(); StringBuilder ripemd160Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
ripemd160Output.Append(hash[i].ToString("x2")); ripemd160Output.Append(hash[i].ToString("x2"));
} }

174
ReedSolomon.cs
View File

@@ -97,52 +97,52 @@ namespace DiscImageChef.Checksums
/// </summary> /// </summary>
public void InitRS(int n, int k, int m) public void InitRS(int n, int k, int m)
{ {
switch (m) switch(m)
{ {
case 2: case 2:
Pp = new []{ 1, 1, 1 }; Pp = new[] { 1, 1, 1 };
break; break;
case 3: case 3:
Pp = new []{ 1, 1, 0, 1 }; Pp = new[] { 1, 1, 0, 1 };
break; break;
case 4: case 4:
Pp = new []{ 1, 1, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 0, 1 };
break; break;
case 5: case 5:
Pp = new []{ 1, 0, 1, 0, 0, 1 }; Pp = new[] { 1, 0, 1, 0, 0, 1 };
break; break;
case 6: case 6:
Pp = new []{ 1, 1, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 0, 0, 0, 1 };
break; break;
case 7: case 7:
Pp = new []{ 1, 0, 0, 1, 0, 0, 0, 1 }; Pp = new[] { 1, 0, 0, 1, 0, 0, 0, 1 };
break; break;
case 8: case 8:
Pp = new []{ 1, 0, 1, 1, 1, 0, 0, 0, 1 }; Pp = new[] { 1, 0, 1, 1, 1, 0, 0, 0, 1 };
break; break;
case 9: case 9:
Pp = new []{ 1, 0, 0, 0, 1, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 0, 0, 0, 1, 0, 0, 0, 0, 1 };
break; break;
case 10: case 10:
Pp = new []{ 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1 };
break; break;
case 11: case 11:
Pp = new []{ 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
break; break;
case 12: case 12:
Pp = new []{ 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1 };
break; break;
case 13: case 13:
Pp = new []{ 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
break; break;
case 14: case 14:
Pp = new []{ 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1 };
break; break;
case 15: case 15:
Pp = new []{ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
break; break;
case 16: case 16:
Pp = new []{ 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1 }; Pp = new[] { 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1 };
break; break;
default: default:
throw new ArgumentOutOfRangeException("m", "m must be between 2 and 16 inclusive"); throw new ArgumentOutOfRangeException("m", "m must be between 2 and 16 inclusive");
@@ -166,7 +166,7 @@ namespace DiscImageChef.Checksums
int modnn(int x) int modnn(int x)
{ {
while (x >= NN) while(x >= NN)
{ {
x -= NN; x -= NN;
x = (x >> MM) + (x & NN); x = (x >> MM) + (x & NN);
@@ -182,21 +182,21 @@ namespace DiscImageChef.Checksums
static void CLEAR(ref int[] a, int n) static void CLEAR(ref int[] a, int n)
{ {
int ci; int ci;
for (ci = (n) - 1; ci >= 0; ci--) for(ci = (n) - 1; ci >= 0; ci--)
(a)[ci] = 0; (a)[ci] = 0;
} }
static void COPY(ref int[] a, ref int[] b, int n) static void COPY(ref int[] a, ref int[] b, int n)
{ {
int ci; int ci;
for (ci = (n) - 1; ci >= 0; ci--) for(ci = (n) - 1; ci >= 0; ci--)
(a)[ci] = (b)[ci]; (a)[ci] = (b)[ci];
} }
static void COPYDOWN(ref int[] a, ref int[] b, int n) static void COPYDOWN(ref int[] a, ref int[] b, int n)
{ {
int ci; int ci;
for (ci = (n) - 1; ci >= 0; ci--) for(ci = (n) - 1; ci >= 0; ci--)
(a)[ci] = (b)[ci]; (a)[ci] = (b)[ci];
} }
@@ -236,12 +236,12 @@ namespace DiscImageChef.Checksums
mask = 1; mask = 1;
Alpha_to[MM] = 0; Alpha_to[MM] = 0;
for (i = 0; i < MM; i++) for(i = 0; i < MM; i++)
{ {
Alpha_to[i] = mask; Alpha_to[i] = mask;
Index_of[Alpha_to[i]] = i; Index_of[Alpha_to[i]] = i;
/* If Pp[i] == 1 then, term @^i occurs in poly-repr of @^MM */ /* If Pp[i] == 1 then, term @^i occurs in poly-repr of @^MM */
if (Pp[i] != 0) if(Pp[i] != 0)
Alpha_to[MM] ^= mask; /* Bit-wise EXOR operation */ Alpha_to[MM] ^= mask; /* Bit-wise EXOR operation */
mask <<= 1; /* single left-shift */ mask <<= 1; /* single left-shift */
} }
@@ -252,9 +252,9 @@ namespace DiscImageChef.Checksums
* term that may occur when poly-repr of @^i is shifted. * term that may occur when poly-repr of @^i is shifted.
*/ */
mask >>= 1; mask >>= 1;
for (i = MM + 1; i < NN; i++) for(i = MM + 1; i < NN; i++)
{ {
if (Alpha_to[i - 1] >= mask) if(Alpha_to[i - 1] >= mask)
Alpha_to[i] = Alpha_to[MM] ^ ((Alpha_to[i - 1] ^ mask) << 1); Alpha_to[i] = Alpha_to[MM] ^ ((Alpha_to[i - 1] ^ mask) << 1);
else else
Alpha_to[i] = Alpha_to[i - 1] << 1; Alpha_to[i] = Alpha_to[i - 1] << 1;
@@ -283,15 +283,15 @@ namespace DiscImageChef.Checksums
Gg[0] = Alpha_to[B0]; Gg[0] = Alpha_to[B0];
Gg[1] = 1; /* g(x) = (X+@**B0) initially */ Gg[1] = 1; /* g(x) = (X+@**B0) initially */
for (i = 2; i <= NN - KK; i++) for(i = 2; i <= NN - KK; i++)
{ {
Gg[i] = 1; Gg[i] = 1;
/* /*
* Below multiply (Gg[0]+Gg[1]*x + ... +Gg[i]x^i) by * Below multiply (Gg[0]+Gg[1]*x + ... +Gg[i]x^i) by
* (@**(B0+i-1) + x) * (@**(B0+i-1) + x)
*/ */
for (j = i - 1; j > 0; j--) for(j = i - 1; j > 0; j--)
if (Gg[j] != 0) if(Gg[j] != 0)
Gg[j] = Gg[j - 1] ^ Alpha_to[modnn((Index_of[Gg[j]]) + B0 + i - 1)]; Gg[j] = Gg[j - 1] ^ Alpha_to[modnn((Index_of[Gg[j]]) + B0 + i - 1)];
else else
Gg[j] = Gg[j - 1]; Gg[j] = Gg[j - 1];
@@ -299,7 +299,7 @@ namespace DiscImageChef.Checksums
Gg[0] = Alpha_to[modnn((Index_of[Gg[0]]) + B0 + i - 1)]; Gg[0] = Alpha_to[modnn((Index_of[Gg[0]]) + B0 + i - 1)];
} }
/* convert Gg[] to index form for quicker encoding */ /* convert Gg[] to index form for quicker encoding */
for (i = 0; i <= NN - KK; i++) for(i = 0; i <= NN - KK; i++)
Gg[i] = Index_of[Gg[i]]; Gg[i] = Index_of[Gg[i]];
} }
@@ -319,25 +319,25 @@ namespace DiscImageChef.Checksums
/// <param name="bb">Outs parity symbols.</param> /// <param name="bb">Outs parity symbols.</param>
public int encode_rs(int[] data, out int[] bb) public int encode_rs(int[] data, out int[] bb)
{ {
if (initialized) if(initialized)
{ {
int i, j; int i, j;
int feedback; int feedback;
bb = new int[NN - KK]; bb = new int[NN - KK];
CLEAR(ref bb, NN - KK); CLEAR(ref bb, NN - KK);
for (i = KK - 1; i >= 0; i--) for(i = KK - 1; i >= 0; i--)
{ {
if (MM != 8) if(MM != 8)
{ {
if (data[i] > NN) if(data[i] > NN)
return -1; /* Illegal symbol */ return -1; /* Illegal symbol */
} }
feedback = Index_of[data[i] ^ bb[NN - KK - 1]]; feedback = Index_of[data[i] ^ bb[NN - KK - 1]];
if (feedback != A0) if(feedback != A0)
{ /* feedback term is non-zero */ { /* feedback term is non-zero */
for (j = NN - KK - 1; j > 0; j--) for(j = NN - KK - 1; j > 0; j--)
if (Gg[j] != A0) if(Gg[j] != A0)
bb[j] = bb[j - 1] ^ Alpha_to[modnn(Gg[j] + feedback)]; bb[j] = bb[j - 1] ^ Alpha_to[modnn(Gg[j] + feedback)];
else else
bb[j] = bb[j - 1]; bb[j] = bb[j - 1];
@@ -346,7 +346,7 @@ namespace DiscImageChef.Checksums
else else
{ /* feedback term is zero. encoder becomes a { /* feedback term is zero. encoder becomes a
* single-byte shifter */ * single-byte shifter */
for (j = NN - KK - 1; j > 0; j--) for(j = NN - KK - 1; j > 0; j--)
bb[j] = bb[j - 1]; bb[j] = bb[j - 1];
bb[0] = 0; bb[0] = 0;
} }
@@ -378,7 +378,7 @@ namespace DiscImageChef.Checksums
/// <param name="no_eras">Number of erasures.</param> /// <param name="no_eras">Number of erasures.</param>
public int eras_dec_rs(ref int[] data, out int[] eras_pos, int no_eras) public int eras_dec_rs(ref int[] data, out int[] eras_pos, int no_eras)
{ {
if (initialized) if(initialized)
{ {
eras_pos = new int[NN - KK]; eras_pos = new int[NN - KK];
int deg_lambda, el, deg_omega; int deg_lambda, el, deg_omega;
@@ -396,11 +396,11 @@ namespace DiscImageChef.Checksums
int syn_error, count; int syn_error, count;
/* data[] is in polynomial form, copy and convert to index form */ /* data[] is in polynomial form, copy and convert to index form */
for (i = NN - 1; i >= 0; i--) for(i = NN - 1; i >= 0; i--)
{ {
if (MM != 8) if(MM != 8)
{ {
if (data[i] > NN) if(data[i] > NN)
return -1; /* Illegal symbol */ return -1; /* Illegal symbol */
} }
recd[i] = Index_of[data[i]]; recd[i] = Index_of[data[i]];
@@ -409,18 +409,18 @@ namespace DiscImageChef.Checksums
* namely @**(B0+i), i = 0, ... ,(NN-KK-1) * namely @**(B0+i), i = 0, ... ,(NN-KK-1)
*/ */
syn_error = 0; syn_error = 0;
for (i = 1; i <= NN - KK; i++) for(i = 1; i <= NN - KK; i++)
{ {
tmp = 0; tmp = 0;
for (j = 0; j < NN; j++) for(j = 0; j < NN; j++)
if (recd[j] != A0) /* recd[j] in index form */ if(recd[j] != A0) /* recd[j] in index form */
tmp ^= Alpha_to[modnn(recd[j] + (B0 + i - 1) * j)]; tmp ^= Alpha_to[modnn(recd[j] + (B0 + i - 1) * j)];
syn_error |= tmp; /* set flag if non-zero syndrome => syn_error |= tmp; /* set flag if non-zero syndrome =>
* error */ * error */
/* store syndrome in index form */ /* store syndrome in index form */
s[i] = Index_of[tmp]; s[i] = Index_of[tmp];
} }
if (syn_error == 0) if(syn_error == 0)
{ {
/* /*
* if syndrome is zero, data[] is a codeword and there are no * if syndrome is zero, data[] is a codeword and there are no
@@ -430,36 +430,36 @@ namespace DiscImageChef.Checksums
} }
CLEAR(ref lambda, NN - KK); CLEAR(ref lambda, NN - KK);
lambda[0] = 1; lambda[0] = 1;
if (no_eras > 0) if(no_eras > 0)
{ {
/* Init lambda to be the erasure locator polynomial */ /* Init lambda to be the erasure locator polynomial */
lambda[1] = Alpha_to[eras_pos[0]]; lambda[1] = Alpha_to[eras_pos[0]];
for (i = 1; i < no_eras; i++) for(i = 1; i < no_eras; i++)
{ {
u = eras_pos[i]; u = eras_pos[i];
for (j = i + 1; j > 0; j--) for(j = i + 1; j > 0; j--)
{ {
tmp = Index_of[lambda[j - 1]]; tmp = Index_of[lambda[j - 1]];
if (tmp != A0) if(tmp != A0)
lambda[j] ^= Alpha_to[modnn(u + tmp)]; lambda[j] ^= Alpha_to[modnn(u + tmp)];
} }
} }
#if DEBUG #if DEBUG
/* find roots of the erasure location polynomial */ /* find roots of the erasure location polynomial */
for (i = 1; i <= no_eras; i++) for(i = 1; i <= no_eras; i++)
reg[i] = Index_of[lambda[i]]; reg[i] = Index_of[lambda[i]];
count = 0; count = 0;
for (i = 1; i <= NN; i++) for(i = 1; i <= NN; i++)
{ {
q = 1; q = 1;
for (j = 1; j <= no_eras; j++) for(j = 1; j <= no_eras; j++)
if (reg[j] != A0) if(reg[j] != A0)
{ {
reg[j] = modnn(reg[j] + j); reg[j] = modnn(reg[j] + j);
q ^= Alpha_to[reg[j]]; q ^= Alpha_to[reg[j]];
} }
if (q == 0) if(q == 0)
{ {
/* store root and error location /* store root and error location
* number indices * number indices
@@ -469,19 +469,19 @@ namespace DiscImageChef.Checksums
count++; count++;
} }
} }
if (count != no_eras) if(count != no_eras)
{ {
DicConsole.DebugWriteLine("Reed Solomon", "\n lambda(x) is WRONG\n"); DicConsole.DebugWriteLine("Reed Solomon", "\n lambda(x) is WRONG\n");
return -1; return -1;
} }
DicConsole.DebugWriteLine("Reed Solomon", "\n Erasure positions as determined by roots of Eras Loc Poly:\n"); DicConsole.DebugWriteLine("Reed Solomon", "\n Erasure positions as determined by roots of Eras Loc Poly:\n");
for (i = 0; i < count; i++) for(i = 0; i < count; i++)
DicConsole.DebugWriteLine("Reed Solomon", "{0} ", loc[i]); DicConsole.DebugWriteLine("Reed Solomon", "{0} ", loc[i]);
DicConsole.DebugWriteLine("Reed Solomon", "\n"); DicConsole.DebugWriteLine("Reed Solomon", "\n");
#endif #endif
} }
for (i = 0; i < NN - KK + 1; i++) for(i = 0; i < NN - KK + 1; i++)
b[i] = Index_of[lambda[i]]; b[i] = Index_of[lambda[i]];
/* /*
@@ -490,19 +490,19 @@ namespace DiscImageChef.Checksums
*/ */
r = no_eras; r = no_eras;
el = no_eras; el = no_eras;
while (++r <= NN - KK) while(++r <= NN - KK)
{ /* r is the step number */ { /* r is the step number */
/* Compute discrepancy at the r-th step in poly-form */ /* Compute discrepancy at the r-th step in poly-form */
discr_r = 0; discr_r = 0;
for (i = 0; i < r; i++) for(i = 0; i < r; i++)
{ {
if ((lambda[i] != 0) && (s[r - i] != A0)) if((lambda[i] != 0) && (s[r - i] != A0))
{ {
discr_r ^= Alpha_to[modnn(Index_of[lambda[i]] + s[r - i])]; discr_r ^= Alpha_to[modnn(Index_of[lambda[i]] + s[r - i])];
} }
} }
discr_r = Index_of[discr_r]; /* Index form */ discr_r = Index_of[discr_r]; /* Index form */
if (discr_r == A0) if(discr_r == A0)
{ {
/* 2 lines below: B(x) <-- x*B(x) */ /* 2 lines below: B(x) <-- x*B(x) */
COPYDOWN(ref b, ref b, NN - KK); COPYDOWN(ref b, ref b, NN - KK);
@@ -512,21 +512,21 @@ namespace DiscImageChef.Checksums
{ {
/* 7 lines below: T(x) <-- lambda(x) - discr_r*x*b(x) */ /* 7 lines below: T(x) <-- lambda(x) - discr_r*x*b(x) */
t[0] = lambda[0]; t[0] = lambda[0];
for (i = 0; i < NN - KK; i++) for(i = 0; i < NN - KK; i++)
{ {
if (b[i] != A0) if(b[i] != A0)
t[i + 1] = lambda[i + 1] ^ Alpha_to[modnn(discr_r + b[i])]; t[i + 1] = lambda[i + 1] ^ Alpha_to[modnn(discr_r + b[i])];
else else
t[i + 1] = lambda[i + 1]; t[i + 1] = lambda[i + 1];
} }
if (2 * el <= r + no_eras - 1) if(2 * el <= r + no_eras - 1)
{ {
el = r + no_eras - el; el = r + no_eras - el;
/* /*
* 2 lines below: B(x) <-- inv(discr_r) * * 2 lines below: B(x) <-- inv(discr_r) *
* lambda(x) * lambda(x)
*/ */
for (i = 0; i <= NN - KK; i++) for(i = 0; i <= NN - KK; i++)
b[i] = (lambda[i] == 0) ? A0 : modnn(Index_of[lambda[i]] - discr_r + NN); b[i] = (lambda[i] == 0) ? A0 : modnn(Index_of[lambda[i]] - discr_r + NN);
} }
else else
@@ -541,10 +541,10 @@ namespace DiscImageChef.Checksums
/* Convert lambda to index form and compute deg(lambda(x)) */ /* Convert lambda to index form and compute deg(lambda(x)) */
deg_lambda = 0; deg_lambda = 0;
for (i = 0; i < NN - KK + 1; i++) for(i = 0; i < NN - KK + 1; i++)
{ {
lambda[i] = Index_of[lambda[i]]; lambda[i] = Index_of[lambda[i]];
if (lambda[i] != A0) if(lambda[i] != A0)
deg_lambda = i; deg_lambda = i;
} }
/* /*
@@ -555,16 +555,16 @@ namespace DiscImageChef.Checksums
COPY(ref reg, ref lambda, NN - KK); COPY(ref reg, ref lambda, NN - KK);
reg[0] = temp; reg[0] = temp;
count = 0; /* Number of roots of lambda(x) */ count = 0; /* Number of roots of lambda(x) */
for (i = 1; i <= NN; i++) for(i = 1; i <= NN; i++)
{ {
q = 1; q = 1;
for (j = deg_lambda; j > 0; j--) for(j = deg_lambda; j > 0; j--)
if (reg[j] != A0) if(reg[j] != A0)
{ {
reg[j] = modnn(reg[j] + j); reg[j] = modnn(reg[j] + j);
q ^= Alpha_to[reg[j]]; q ^= Alpha_to[reg[j]];
} }
if (q == 0) if(q == 0)
{ {
/* store root (index-form) and error location number */ /* store root (index-form) and error location number */
root[count] = i; root[count] = i;
@@ -573,14 +573,14 @@ namespace DiscImageChef.Checksums
} }
} }
#if DEBUG #if DEBUG
DicConsole.DebugWriteLine("Reed Solomon", "\n Final error positions:\t"); DicConsole.DebugWriteLine("Reed Solomon", "\n Final error positions:\t");
for (i = 0; i < count; i++) for(i = 0; i < count; i++)
DicConsole.DebugWriteLine("Reed Solomon", "{0} ", loc[i]); DicConsole.DebugWriteLine("Reed Solomon", "{0} ", loc[i]);
DicConsole.DebugWriteLine("Reed Solomon", "\n"); DicConsole.DebugWriteLine("Reed Solomon", "\n");
#endif #endif
if (deg_lambda != count) if(deg_lambda != count)
{ {
/* /*
* deg(lambda) unequal to number of roots => uncorrectable * deg(lambda) unequal to number of roots => uncorrectable
@@ -593,16 +593,16 @@ namespace DiscImageChef.Checksums
* x**(NN-KK)). in index form. Also find deg(omega). * x**(NN-KK)). in index form. Also find deg(omega).
*/ */
deg_omega = 0; deg_omega = 0;
for (i = 0; i < NN - KK; i++) for(i = 0; i < NN - KK; i++)
{ {
tmp = 0; tmp = 0;
j = (deg_lambda < i) ? deg_lambda : i; j = (deg_lambda < i) ? deg_lambda : i;
for (; j >= 0; j--) for(; j >= 0; j--)
{ {
if ((s[i + 1 - j] != A0) && (lambda[j] != A0)) if((s[i + 1 - j] != A0) && (lambda[j] != A0))
tmp ^= Alpha_to[modnn(s[i + 1 - j] + lambda[j])]; tmp ^= Alpha_to[modnn(s[i + 1 - j] + lambda[j])];
} }
if (tmp != 0) if(tmp != 0)
deg_omega = i; deg_omega = i;
omega[i] = Index_of[tmp]; omega[i] = Index_of[tmp];
} }
@@ -612,30 +612,30 @@ namespace DiscImageChef.Checksums
* Compute error values in poly-form. num1 = omega(inv(X(l))), num2 = * Compute error values in poly-form. num1 = omega(inv(X(l))), num2 =
* inv(X(l))**(B0-1) and den = lambda_pr(inv(X(l))) all in poly-form * inv(X(l))**(B0-1) and den = lambda_pr(inv(X(l))) all in poly-form
*/ */
for (j = count - 1; j >= 0; j--) for(j = count - 1; j >= 0; j--)
{ {
num1 = 0; num1 = 0;
for (i = deg_omega; i >= 0; i--) for(i = deg_omega; i >= 0; i--)
{ {
if (omega[i] != A0) if(omega[i] != A0)
num1 ^= Alpha_to[modnn(omega[i] + i * root[j])]; num1 ^= Alpha_to[modnn(omega[i] + i * root[j])];
} }
num2 = Alpha_to[modnn(root[j] * (B0 - 1) + NN)]; num2 = Alpha_to[modnn(root[j] * (B0 - 1) + NN)];
den = 0; den = 0;
/* lambda[i+1] for i even is the formal derivative lambda_pr of lambda[i] */ /* lambda[i+1] for i even is the formal derivative lambda_pr of lambda[i] */
for (i = min(deg_lambda, NN - KK - 1) & ~1; i >= 0; i -= 2) for(i = min(deg_lambda, NN - KK - 1) & ~1; i >= 0; i -= 2)
{ {
if (lambda[i + 1] != A0) if(lambda[i + 1] != A0)
den ^= Alpha_to[modnn(lambda[i + 1] + i * root[j])]; den ^= Alpha_to[modnn(lambda[i + 1] + i * root[j])];
} }
if (den == 0) if(den == 0)
{ {
DicConsole.DebugWriteLine("Reed Solomon", "\n ERROR: denominator = 0\n"); DicConsole.DebugWriteLine("Reed Solomon", "\n ERROR: denominator = 0\n");
return -1; return -1;
} }
/* Apply error to data */ /* Apply error to data */
if (num1 != 0) if(num1 != 0)
{ {
data[loc[j]] ^= Alpha_to[modnn(Index_of[num1] + Index_of[num2] + NN - Index_of[den])]; data[loc[j]] ^= Alpha_to[modnn(Index_of[num1] + Index_of[num2] + NN - Index_of[den])];
} }

6
SHA1Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_sha1Provider.TransformFinalBlock(new byte[0], 0, 0); _sha1Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder sha1Output = new StringBuilder(); StringBuilder sha1Output = new StringBuilder();
for (int i = 0; i < _sha1Provider.Hash.Length; i++) for(int i = 0; i < _sha1Provider.Hash.Length; i++)
{ {
sha1Output.Append(_sha1Provider.Hash[i].ToString("x2")); sha1Output.Append(_sha1Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _sha1Provider.ComputeHash(fileStream); hash = _sha1Provider.ComputeHash(fileStream);
StringBuilder sha1Output = new StringBuilder(); StringBuilder sha1Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha1Output.Append(hash[i].ToString("x2")); sha1Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _sha1Provider.ComputeHash(data, 0, (int)len); hash = _sha1Provider.ComputeHash(data, 0, (int)len);
StringBuilder sha1Output = new StringBuilder(); StringBuilder sha1Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha1Output.Append(hash[i].ToString("x2")); sha1Output.Append(hash[i].ToString("x2"));
} }

6
SHA256Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_sha256Provider.TransformFinalBlock(new byte[0], 0, 0); _sha256Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder sha256Output = new StringBuilder(); StringBuilder sha256Output = new StringBuilder();
for (int i = 0; i < _sha256Provider.Hash.Length; i++) for(int i = 0; i < _sha256Provider.Hash.Length; i++)
{ {
sha256Output.Append(_sha256Provider.Hash[i].ToString("x2")); sha256Output.Append(_sha256Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _sha256Provider.ComputeHash(fileStream); hash = _sha256Provider.ComputeHash(fileStream);
StringBuilder sha256Output = new StringBuilder(); StringBuilder sha256Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha256Output.Append(hash[i].ToString("x2")); sha256Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _sha256Provider.ComputeHash(data, 0, (int)len); hash = _sha256Provider.ComputeHash(data, 0, (int)len);
StringBuilder sha256Output = new StringBuilder(); StringBuilder sha256Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha256Output.Append(hash[i].ToString("x2")); sha256Output.Append(hash[i].ToString("x2"));
} }

6
SHA384Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_sha384Provider.TransformFinalBlock(new byte[0], 0, 0); _sha384Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder sha384Output = new StringBuilder(); StringBuilder sha384Output = new StringBuilder();
for (int i = 0; i < _sha384Provider.Hash.Length; i++) for(int i = 0; i < _sha384Provider.Hash.Length; i++)
{ {
sha384Output.Append(_sha384Provider.Hash[i].ToString("x2")); sha384Output.Append(_sha384Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _sha384Provider.ComputeHash(fileStream); hash = _sha384Provider.ComputeHash(fileStream);
StringBuilder sha384Output = new StringBuilder(); StringBuilder sha384Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha384Output.Append(hash[i].ToString("x2")); sha384Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _sha384Provider.ComputeHash(data, 0, (int)len); hash = _sha384Provider.ComputeHash(data, 0, (int)len);
StringBuilder sha384Output = new StringBuilder(); StringBuilder sha384Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha384Output.Append(hash[i].ToString("x2")); sha384Output.Append(hash[i].ToString("x2"));
} }

6
SHA512Context.cs
View File

@@ -92,7 +92,7 @@ namespace DiscImageChef.Checksums
_sha512Provider.TransformFinalBlock(new byte[0], 0, 0); _sha512Provider.TransformFinalBlock(new byte[0], 0, 0);
StringBuilder sha512Output = new StringBuilder(); StringBuilder sha512Output = new StringBuilder();
for (int i = 0; i < _sha512Provider.Hash.Length; i++) for(int i = 0; i < _sha512Provider.Hash.Length; i++)
{ {
sha512Output.Append(_sha512Provider.Hash[i].ToString("x2")); sha512Output.Append(_sha512Provider.Hash[i].ToString("x2"));
} }
@@ -121,7 +121,7 @@ namespace DiscImageChef.Checksums
hash = _sha512Provider.ComputeHash(fileStream); hash = _sha512Provider.ComputeHash(fileStream);
StringBuilder sha512Output = new StringBuilder(); StringBuilder sha512Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha512Output.Append(hash[i].ToString("x2")); sha512Output.Append(hash[i].ToString("x2"));
} }
@@ -140,7 +140,7 @@ namespace DiscImageChef.Checksums
hash = _sha512Provider.ComputeHash(data, 0, (int)len); hash = _sha512Provider.ComputeHash(data, 0, (int)len);
StringBuilder sha512Output = new StringBuilder(); StringBuilder sha512Output = new StringBuilder();
for (int i = 0; i < hash.Length; i++) for(int i = 0; i < hash.Length; i++)
{ {
sha512Output.Append(hash[i].ToString("x2")); sha512Output.Append(hash[i].ToString("x2"));
} }

86
SpamSumContext.cs
View File

@@ -122,7 +122,7 @@ namespace DiscImageChef.Checksums
{ {
self = new fuzzy_state(); self = new fuzzy_state();
self.bh = new blockhash_context[NUM_BLOCKHASHES]; self.bh = new blockhash_context[NUM_BLOCKHASHES];
for (int i = 0; i < NUM_BLOCKHASHES; i++) for(int i = 0; i < NUM_BLOCKHASHES; i++)
self.bh[i].digest = new byte[SPAMSUM_LENGTH]; self.bh[i].digest = new byte[SPAMSUM_LENGTH];
self.bhstart = 0; self.bhstart = 0;
@@ -184,10 +184,10 @@ namespace DiscImageChef.Checksums
{ {
uint obh, nbh; uint obh, nbh;
if (self.bhend >= NUM_BLOCKHASHES) if(self.bhend >= NUM_BLOCKHASHES)
return; return;
if (self.bhend == 0) // assert if(self.bhend == 0) // assert
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
obh = self.bhend - 1; obh = self.bhend - 1;
@@ -202,18 +202,18 @@ namespace DiscImageChef.Checksums
void fuzzy_try_reduce_blockhash() void fuzzy_try_reduce_blockhash()
{ {
if (self.bhstart >= self.bhend) if(self.bhstart >= self.bhend)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
if (self.bhend - self.bhstart < 2) if(self.bhend - self.bhstart < 2)
/* Need at least two working hashes. */ /* Need at least two working hashes. */
return; return;
if ((UInt64)SSDEEP_BS(self.bhstart) * SPAMSUM_LENGTH >= if((UInt64)SSDEEP_BS(self.bhstart) * SPAMSUM_LENGTH >=
self.total_size) self.total_size)
/* Initial blocksize estimate would select this or a smaller /* Initial blocksize estimate would select this or a smaller
* blocksize. */ * blocksize. */
return; return;
if (self.bh[self.bhstart + 1].dlen < SPAMSUM_LENGTH / 2) if(self.bh[self.bhstart + 1].dlen < SPAMSUM_LENGTH / 2)
/* Estimate adjustment would select this blocksize. */ /* Estimate adjustment would select this blocksize. */
return; return;
/* At this point we are clearly no longer interested in the /* At this point we are clearly no longer interested in the
@@ -231,16 +231,16 @@ namespace DiscImageChef.Checksums
roll_hash(c); roll_hash(c);
h = roll_sum(); h = roll_sum();
for (i = self.bhstart; i < self.bhend; ++i) for(i = self.bhstart; i < self.bhend; ++i)
{ {
self.bh[i].h = sum_hash(c, self.bh[i].h); self.bh[i].h = sum_hash(c, self.bh[i].h);
self.bh[i].halfh = sum_hash(c, self.bh[i].halfh); self.bh[i].halfh = sum_hash(c, self.bh[i].halfh);
} }
for (i = self.bhstart; i < self.bhend; ++i) for(i = self.bhstart; i < self.bhend; ++i)
{ {
/* With growing blocksize almost no runs fail the next test. */ /* With growing blocksize almost no runs fail the next test. */
if (h % SSDEEP_BS(i) != SSDEEP_BS(i) - 1) if(h % SSDEEP_BS(i) != SSDEEP_BS(i) - 1)
/* Once this condition is false for one bs, it is /* Once this condition is false for one bs, it is
* automatically false for all further bs. I.e. if * automatically false for all further bs. I.e. if
* h === -1 (mod 2*bs) then h === -1 (mod bs). */ * h === -1 (mod 2*bs) then h === -1 (mod bs). */
@@ -248,7 +248,7 @@ namespace DiscImageChef.Checksums
/* We have hit a reset point. We now emit hashes which are /* We have hit a reset point. We now emit hashes which are
* based on all characters in the piece of the message between * based on all characters in the piece of the message between
* the last reset point and this one */ * the last reset point and this one */
if (0 == self.bh[i].dlen) if(0 == self.bh[i].dlen)
{ {
/* Can only happen 30 times. */ /* Can only happen 30 times. */
/* First step for this blocksize. Clone next. */ /* First step for this blocksize. Clone next. */
@@ -256,7 +256,7 @@ namespace DiscImageChef.Checksums
} }
self.bh[i].digest[self.bh[i].dlen] = b64[self.bh[i].h % 64]; self.bh[i].digest[self.bh[i].dlen] = b64[self.bh[i].h % 64];
self.bh[i].halfdigest = b64[self.bh[i].halfh % 64]; self.bh[i].halfdigest = b64[self.bh[i].halfh % 64];
if (self.bh[i].dlen < SPAMSUM_LENGTH - 1) if(self.bh[i].dlen < SPAMSUM_LENGTH - 1)
{ {
/* We can have a problem with the tail overflowing. The /* We can have a problem with the tail overflowing. The
* easiest way to cope with this is to only reset the * easiest way to cope with this is to only reset the
@@ -266,7 +266,7 @@ namespace DiscImageChef.Checksums
* */ * */
self.bh[i].digest[++(self.bh[i].dlen)] = 0; self.bh[i].digest[++(self.bh[i].dlen)] = 0;
self.bh[i].h = HASH_INIT; self.bh[i].h = HASH_INIT;
if (self.bh[i].dlen < SPAMSUM_LENGTH / 2) if(self.bh[i].dlen < SPAMSUM_LENGTH / 2)
{ {
self.bh[i].halfh = HASH_INIT; self.bh[i].halfh = HASH_INIT;
self.bh[i].halfdigest = 0; self.bh[i].halfdigest = 0;
@@ -285,7 +285,7 @@ namespace DiscImageChef.Checksums
public void Update(byte[] data, uint len) public void Update(byte[] data, uint len)
{ {
self.total_size += len; self.total_size += len;
for (int i = 0; i < len; i++) for(int i = 0; i < len; i++)
fuzzy_engine_step(data[i]); fuzzy_engine_step(data[i]);
} }
@@ -308,34 +308,34 @@ namespace DiscImageChef.Checksums
int remain = (int)(FUZZY_MAX_RESULT - 1); /* Exclude terminating '\0'. */ int remain = (int)(FUZZY_MAX_RESULT - 1); /* Exclude terminating '\0'. */
result = new byte[FUZZY_MAX_RESULT]; result = new byte[FUZZY_MAX_RESULT];
/* Verify that our elimination was not overeager. */ /* Verify that our elimination was not overeager. */
if (!(bi == 0 || (UInt64)SSDEEP_BS(bi) / 2 * SPAMSUM_LENGTH < self.total_size)) if(!(bi == 0 || (UInt64)SSDEEP_BS(bi) / 2 * SPAMSUM_LENGTH < self.total_size))
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result_off = 0; result_off = 0;
/* Initial blocksize guess. */ /* Initial blocksize guess. */
while ((UInt64)SSDEEP_BS(bi) * SPAMSUM_LENGTH < self.total_size) while((UInt64)SSDEEP_BS(bi) * SPAMSUM_LENGTH < self.total_size)
{ {
++bi; ++bi;
if (bi >= NUM_BLOCKHASHES) if(bi >= NUM_BLOCKHASHES)
{ {
throw new OverflowException("The input exceeds data types."); throw new OverflowException("The input exceeds data types.");
} }
} }
/* Adapt blocksize guess to actual digest length. */ /* Adapt blocksize guess to actual digest length. */
while (bi >= self.bhend) while(bi >= self.bhend)
--bi; --bi;
while (bi > self.bhstart && self.bh[bi].dlen < SPAMSUM_LENGTH / 2) while(bi > self.bhstart && self.bh[bi].dlen < SPAMSUM_LENGTH / 2)
--bi; --bi;
if ((bi > 0 && self.bh[bi].dlen < SPAMSUM_LENGTH / 2)) if((bi > 0 && self.bh[bi].dlen < SPAMSUM_LENGTH / 2))
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
sb.AppendFormat("{0}:", SSDEEP_BS(bi)); sb.AppendFormat("{0}:", SSDEEP_BS(bi));
i = Encoding.ASCII.GetBytes(sb.ToString()).Length; i = Encoding.ASCII.GetBytes(sb.ToString()).Length;
if (i <= 0) if(i <= 0)
/* Maybe snprintf has set errno here? */ /* Maybe snprintf has set errno here? */
throw new OverflowException("The input exceeds data types."); throw new OverflowException("The input exceeds data types.");
if (i >= remain) if(i >= remain)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
remain -= i; remain -= i;
@@ -344,18 +344,18 @@ namespace DiscImageChef.Checksums
result_off += i; result_off += i;
i = (int)self.bh[bi].dlen; i = (int)self.bh[bi].dlen;
if (i > remain) if(i > remain)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
Array.Copy(self.bh[bi].digest, 0, result, result_off, i); Array.Copy(self.bh[bi].digest, 0, result, result_off, i);
result_off += i; result_off += i;
remain -= i; remain -= i;
if (h != 0) if(h != 0)
{ {
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off] = b64[self.bh[bi].h % 64]; result[result_off] = b64[self.bh[bi].h % 64];
if (i < 3 || if(i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off - 3]) result[result_off] != result[result_off - 3])
@@ -364,12 +364,12 @@ namespace DiscImageChef.Checksums
--remain; --remain;
} }
} }
else if (self.bh[bi].digest[i] != 0) else if(self.bh[bi].digest[i] != 0)
{ {
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off] = self.bh[bi].digest[i]; result[result_off] = self.bh[bi].digest[i];
if (i < 3 || if(i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off - 3]) result[result_off] != result[result_off - 3])
@@ -378,27 +378,27 @@ namespace DiscImageChef.Checksums
--remain; --remain;
} }
} }
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off++] = 0x3A; // ':' result[result_off++] = 0x3A; // ':'
--remain; --remain;
if (bi < self.bhend - 1) if(bi < self.bhend - 1)
{ {
++bi; ++bi;
i = (int)self.bh[bi].dlen; i = (int)self.bh[bi].dlen;
if (i > remain) if(i > remain)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
Array.Copy(self.bh[bi].digest, 0, result, result_off, i); Array.Copy(self.bh[bi].digest, 0, result, result_off, i);
result_off += i; result_off += i;
remain -= i; remain -= i;
if (h != 0) if(h != 0)
{ {
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
h = self.bh[bi].halfh; h = self.bh[bi].halfh;
result[result_off] = b64[h % 64]; result[result_off] = b64[h % 64];
if (i < 3 || if(i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off - 3]) result[result_off] != result[result_off - 3])
@@ -410,12 +410,12 @@ namespace DiscImageChef.Checksums
else else
{ {
i = self.bh[bi].halfdigest; i = self.bh[bi].halfdigest;
if (i != 0) if(i != 0)
{ {
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off] = (byte)i; result[result_off] = (byte)i;
if (i < 3 || if(i < 3 ||
result[result_off] != result[result_off - 1] || result[result_off] != result[result_off - 1] ||
result[result_off] != result[result_off - 2] || result[result_off] != result[result_off - 2] ||
result[result_off] != result[result_off - 3]) result[result_off] != result[result_off - 3])
@@ -426,11 +426,11 @@ namespace DiscImageChef.Checksums
} }
} }
} }
else if (h != 0) else if(h != 0)
{ {
if (self.bh[bi].dlen != 0) if(self.bh[bi].dlen != 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
if (remain <= 0) if(remain <= 0)
throw new Exception("Assertion failed"); throw new Exception("Assertion failed");
result[result_off++] = b64[self.bh[bi].h % 64]; result[result_off++] = b64[self.bh[bi].h % 64];
/* No need to bother with FUZZY_FLAG_ELIMSEQ, because this /* No need to bother with FUZZY_FLAG_ELIMSEQ, because this
@@ -519,9 +519,9 @@ namespace DiscImageChef.Checksums
{ {
StringBuilder sb = new StringBuilder(); StringBuilder sb = new StringBuilder();
for (int i = 0; i < CString.Length; i++) for(int i = 0; i < CString.Length; i++)
{ {
if (CString[i] == 0) if(CString[i] == 0)
break; break;
sb.Append(Encoding.ASCII.GetString(CString, i, 1)); sb.Append(Encoding.ASCII.GetString(CString, i, 1));