private static RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey)
{
RSACryptoServiceProvider rSACryptoServiceProvider;
BinaryReader binaryReader = new BinaryReader(new MemoryStream(privkey));
ushort num = 0;
try
{
try
{
num = binaryReader.ReadUInt16();
if (num == 33072)
{
binaryReader.ReadByte();
}
else if (num != 33328)
{
rSACryptoServiceProvider = null;
return(rSACryptoServiceProvider);
}
else
{
binaryReader.ReadInt16();
}
num = binaryReader.ReadUInt16();
if (num != 258)
{
rSACryptoServiceProvider = null;
}
else if (binaryReader.ReadByte() == 0)
{
byte[] numArray = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray1 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray2 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray3 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray4 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray5 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray6 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
byte[] numArray7 = binaryReader.ReadBytes(RSAFromPkcs8.GetIntegerSize(binaryReader));
RSACryptoServiceProvider rSACryptoServiceProvider1 = new RSACryptoServiceProvider();
RSAParameters rSAParameter = new RSAParameters()
{
Modulus = numArray,
Exponent = numArray1,
D = numArray2,
P = numArray3,
Q = numArray4,
DP = numArray5,
DQ = numArray6,
InverseQ = numArray7
};
rSACryptoServiceProvider1.ImportParameters(rSAParameter);
rSACryptoServiceProvider = rSACryptoServiceProvider1;
}
else
{
rSACryptoServiceProvider = null;
}
}
catch (Exception exception)
{
rSACryptoServiceProvider = null;
}
}
finally
{
binaryReader.Close();
}
return(rSACryptoServiceProvider);
}
private static RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey)
{
MemoryStream input = new MemoryStream(privkey);
BinaryReader binaryReader = new BinaryReader(input);
RSACryptoServiceProvider result;
try
{
ushort num = binaryReader.ReadUInt16();
if (num == 33072)
{
binaryReader.ReadByte();
}
else
{
if (num != 33328)
{
result = null;
return(result);
}
binaryReader.ReadInt16();
}
num = binaryReader.ReadUInt16();
if (num != 258)
{
result = null;
}
else
{
byte b = binaryReader.ReadByte();
if (b != 0)
{
result = null;
}
else
{
int integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] modulus = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] exponent = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] d = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] p = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] q = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] dP = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] dQ = binaryReader.ReadBytes(integerSize);
integerSize = RSAFromPkcs8.GetIntegerSize(binaryReader);
byte[] inverseQ = binaryReader.ReadBytes(integerSize);
RSACryptoServiceProvider rSACryptoServiceProvider = new RSACryptoServiceProvider();
rSACryptoServiceProvider.ImportParameters(new RSAParameters
{
Modulus = modulus,
Exponent = exponent,
D = d,
P = p,
Q = q,
DP = dP,
DQ = dQ,
InverseQ = inverseQ
});
result = rSACryptoServiceProvider;
}
}
}
catch (Exception)
{
result = null;
}
finally
{
binaryReader.Close();
}
return(result);
}
