public int Do_BuffaloEnc(string[] args, Program.Properties props)
{
int ret = 0;
Properties subprops = new Properties
{
crypt_key = DEFAULT_KEY,
magic = DEFAULT_MAGIC,
seed = 0x4F // Char: O
};
ToolsArgMap argMap = new ToolsArgMap();
argMap.Init_args_BuffaloEnc(args, ref subprops);
if (props.help)
{
PrintHelp();
return(0);
}
if (CheckParams(subprops) != 0)
{
return(1);
}
FileStream inFs;
FileStream outFs;
FileMode outFMode =
File.Exists(props.outFile) ? FileMode.Truncate : FileMode.Create;
try
{
inFs = new FileStream(props.inFile, FileMode.Open, FileAccess.Read, FileShare.Read);
outFs = new FileStream(props.outFile, outFMode, FileAccess.Write, FileShare.None);
}
catch (IOException e)
{
Console.Error.WriteLine(e.Message);
return(1);
}
if (inFs.Length >= 0x80000000L)
{
Console.Error.WriteLine(Lang.Tools.BuffaloEncRes.Error_BigFile);
return(1);
}
ret = subprops.isde ?
Decrypt(ref inFs, ref outFs, subprops, props.debug) :
Encrypt(ref inFs, ref outFs, subprops, props.debug);
inFs.Close();
outFs.Close();
return(ret);
}
public int Do_Aes(string[] args, int arg_idx, Program.Properties props)
{
byte[] iv;
byte[] key;
int keylen;
long offset = 0;
long len = 0;
Properties subprops = new Properties()
{
keylen = 256,
};
CryptoStream Cs;
ToolsArgMap argMap = new ToolsArgMap();
argMap.Init_args_Aes(args, arg_idx, ref subprops);
if (props.help)
{
PrintHelp(arg_idx);
return(0);
}
keylen = subprops.keylen;
iv = new byte[16];
key = new byte[keylen / 8]; // keylenはbit値、128または256
/*
* check/build iv and key
*/
/* iv */
if (subprops.iv == null || subprops.iv.Length == 0) // if iv is not specified or blank
{
/* use default array of iv (filled by '0') */
Console.Error.WriteLine(
Lang.Resource.Main_Warning_Prefix +
Lang.Tools.AesRes.Warning_NoIV);
}
else // if iv is specified
{
if (!subprops.hex_iv && subprops.iv.Length > iv.Length)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_LongIVLen);
return(1);
}
else if (subprops.hex_iv)
{
if (subprops.iv.Length % 2 != 0)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_InvalidIVLenHex);
return(1);
}
if (subprops.iv.Length > iv.Length * 2)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_LongIVLenHex);
}
}
if (subprops.hex_iv)
{
for (int i = 0; i < (subprops.iv.Length / 2); i++)
{
iv[i] = Convert.ToByte(subprops.iv.Substring(i * 2, 2), 16);
}
}
else
{
byte[] tmp_iv = Encoding.ASCII.GetBytes(subprops.iv);
Array.Copy(tmp_iv, iv, tmp_iv.Length);
}
}
/* iv end */
/* key */
if (subprops.key == null || subprops.key.Length == 0)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_NoKey);
return(1);
}
if (!subprops.hex_key && subprops.key.Length > key.Length)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_LongKeyLen, key.Length);
return(1);
}
else if (subprops.hex_key)
{
if (subprops.key.Length % 2 != 0)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_InvalidKeyLenHex);
return(1);
}
if (subprops.key.Length > key.Length * 2)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_LongKeyLenHex, key.Length, key.Length * 2);
return(1);
}
}
if (subprops.hex_key)
{
for (int i = 0; i < (subprops.key.Length / 2); i++)
{
key[i] = Convert.ToByte(subprops.key.Substring(i * 2, 2), 16);
}
}
else
{
byte[] tmp_key = Encoding.ASCII.GetBytes(subprops.key);
Array.Copy(tmp_key, key, tmp_key.Length);
//if (tmp_key.Length < keylen / 8)
// Console.Error.WriteLine("specified key is too short, padded by '0'");
}
/* key end */
/*
* check/build iv and key end
*/
FileStream inFs;
FileStream outFs;
FileMode outMode =
File.Exists(props.outFile) ? FileMode.Truncate : FileMode.Create;
try
{
inFs = new FileStream(props.inFile, FileMode.Open, FileAccess.Read, FileShare.Write);
outFs = new FileStream(props.outFile, outMode, FileAccess.Write, FileShare.None);
}
catch (IOException e)
{
Console.Error.WriteLine(e.Message);
return(1);
}
/* check offset/length */
if (subprops.offset > inFs.Length)
{
Console.Error.WriteLine(
Lang.Resource.Main_Warning_Prefix +
Lang.Tools.AesRes.Warning_LargeOffset);
}
else
{
offset = subprops.offset;
}
if (subprops.len != null && // something is specified for len
(!Program.StrToLong(subprops.len, out len, NumberStyles.None) || // fail to convert (invalid chars for num)
len <= 0 || // equal or smaller than 0
len > inFs.Length - offset)) // larger than valid length
{
Console.Error.WriteLine(
Lang.Resource.Main_Warning_Prefix +
Lang.Tools.AesRes.Warning_InvalidLength);
subprops.len = null;
}
if (subprops.len != null ?
len % 16 != 0 : // if "length" specified
(inFs.Length - offset) % 16 != 0) // no length specified
{
if (subprops.decrypt)
{
Console.Error.WriteLine(
Lang.Resource.Main_Error_Prefix +
Lang.Tools.AesRes.Error_InvalidDecLen);
return(1);
}
else
{
Console.Error.WriteLine(
Lang.Resource.Main_Warning_Prefix +
Lang.Tools.AesRes.Warning_ShortEncLen);
}
}
/* check offset/length end */
if (!props.quiet)
{
PrintInfo(subprops, key, iv,
subprops.len != null ? len : inFs.Length - offset);
}
AesManaged aes = new AesManaged
{
KeySize = keylen,
IV = iv,
Key = key,
Mode = CipherMode.CBC,
Padding = PaddingMode.Zeros
};
ICryptoTransform endec = subprops.decrypt ?
aes.CreateDecryptor(aes.Key, aes.IV) :
aes.CreateEncryptor(aes.Key, aes.IV);
Cs = new CryptoStream(outFs, endec, CryptoStreamMode.Write);
inFs.Seek(offset, SeekOrigin.Begin);
byte[] buf = new byte[0x10000];
int readlen;
while ((readlen = inFs.Read(buf, 0, buf.Length)) > 0)
{
if (subprops.len == null)
{
Cs.Write(buf, 0, readlen);
}
else if (len > readlen)
{
len -= readlen;
Cs.Write(buf, 0, readlen);
}
else
{
Cs.Write(buf, 0, (int)len);
break;
}
}
Cs.Close();
inFs.Close();
outFs.Close();
return(0);
}
public int Do_BinCut(string[] args, int arg_idx, Program.Properties props)
{
Properties subprops = new Properties();
if (props.help)
{
PrintHelp(arg_idx);
return(0);
}
ToolsArgMap argMap = new ToolsArgMap();
argMap.Init_args_BinCut(args, arg_idx, ref subprops);
FileStream inFs;
FileStream outFs;
FileMode outFMode =
File.Exists(props.outFile) ? FileMode.Truncate : FileMode.Create;
try
{
inFs = new FileStream(props.inFile, FileMode.Open, FileAccess.Read, FileShare.Read);
outFs = new FileStream(props.outFile, outFMode, FileAccess.Write, FileShare.None);
}
catch (IOException e)
{
Console.Error.WriteLine(e.Message);
return(1);
}
/* check offset/length */
if (subprops.offset > inFs.Length)
{
Console.Error.WriteLine(Lang.Resource.Main_Warning_Prefix +
Lang.Tools.BinCutRes.Warning_LargeOffset);
subprops.offset = 0;
}
if (subprops.len < 0 || subprops.len > inFs.Length - subprops.offset)
{
Console.Error.WriteLine(Lang.Resource.Main_Warning_Prefix +
Lang.Tools.BinCutRes.Warning_InvalidLength);
subprops.len = 0;
}
if (subprops.pad > 0 && subprops.padBS > 0)
{
Console.Error.WriteLine(Lang.Resource.Main_Error_Prefix +
Lang.Tools.BinCutRes.Error_DualPad);
return(1);
}
if (subprops.pad != 0 &&
subprops.pad <
(subprops.len != 0 ? subprops.len : inFs.Length - subprops.offset))
{
Console.Error.WriteLine(Lang.Resource.Main_Error_Prefix +
Lang.Tools.BinCutRes.Error_SmallPadSize);
return(1);
}
if (subprops.padBS < 0)
{
Console.Error.WriteLine(Lang.Resource.Main_Error_Prefix +
Lang.Tools.BinCutRes.Error_InvalidPadBSSize);
return(1);
}
/* check offset/length/pad/pad_with_bs end */
long data_len =
subprops.len != 0 ? subprops.len : (inFs.Length - subprops.offset);
if (!props.quiet)
{
PrintInfo(subprops, data_len);
}
inFs.Seek(subprops.offset, SeekOrigin.Begin);
inFs.CopyTo(outFs);
if (subprops.len != 0)
{
outFs.SetLength(subprops.len);
}
/* padding無しであればここで終了 */
if (subprops.pad == 0 && subprops.padBS == 0)
{
return(0);
}
long padded_len;
/*
* blocksizeでのpaddingの際は余りを確認して、あるようならblocksizeを足す
* 指定サイズへのpaddingの際はそのサイズをそのまま指定
*/
if (subprops.padBS > 0)
{
padded_len = subprops.padBS *
((data_len / subprops.padBS) + (data_len % subprops.padBS > 0 ? 1 : 0));
}
else
{
padded_len = subprops.pad;
}
long len;
byte[] buf = new byte[0x10000];
for (len = padded_len - data_len; len >= buf.Length; len -= buf.Length)
{
outFs.Write(buf, 0, buf.Length);
}
if (len > 0)
{
outFs.Write(buf, 0, (int)len);
}
return(0);
}
