public void Is_Equals_Result()
{
//Arrange
byte[] message = Encoding.UTF8.GetBytes("message");
string SK = "<RSAKeyValue><Modulus>rQaN8F5SI3HZ0lR3gEY7RoDGFx/hOwYaGH0cTiy1/je41yE2TI" +
"RSlEgme22dJ9Sn8Q9C8V9Wg6mZ6IyBBPoED/lcdP6m7fFBAwCVzZ+TYcwdkC8vGw0YfWON0ya31bhgAt" +
"q4fDgfV1271RGelYzapx9kDJd+Dj/LxBE0NHXxjAk=</Modulus><Exponent>AQAB</Exponent><P>" +
"5rGNQDfyrSaNczuDtV9p+NxJ5/NxQaiqbkdGAViwuvki6ffKCeWTMGwWU+kNlEkZm5jh+pApXBLE4qvx" +
"AtrLnw==</P><Q>wAGLDZdcQ4xs3DAYSrW98EKIWPlNBoQ5ZXnLh/xVNbLAUzpqn0IcgAGcoYqQNR51v" +
"c/COFpzd+i2RiAiD9sHVw==</Q><DP>DPmTfjcnWQHAFukUAVF6flq1dWxFxHGeFFHB6DV6yylUA2DCZ" +
"kgZPTH3F4UWFG8AF7ZDj3ooOVt841rUVVrE9Q==</DP><DQ>BzaHoMUU5Dy8QjFUWEonjoURVjZXXG1P" +
"Mq62pK8oDFJgwz+ojb8QDwcAeVkZPcWdKrpJU5CiUdjeMBg471uNFQ==</DQ><InverseQ>arL2Yjq/7" +
"3RofGP310n5B0QxrqqiE9zP20AZ1lZCYFgyF++2iZ2kNgq0QO/fLRAO8QrFmSQXTS2Imsa/AdAuIQ==<" +
"/InverseQ><D>W6QoE1JxoLJRUxRHwtnv1TSpNmA9M7zUn3nMPx9xOPccYF0H3FkNP9pC/4acAReh54x" +
"UwXDkapGuobuhLhiZg1iGuUA0w9NQZwwms+esvE4c7E3AOlBWFJxUL4wDZNd58HDHSSlQxC+HPYu7ukR" +
"7tfC3aqAyc5VN2P+2/1AGts0=</D></RSAKeyValue>";
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(SK);
//Act
var cipherbytes = serviceMock.Encrypt(message, rsa.ExportParameters(false));
var plainbytes = serviceMock.Decrypt(cipherbytes, rsa.ExportParameters(true));
//Assert
Assert.IsNotNull(cipherbytes);
Assert.IsInstanceOfType(cipherbytes, typeof(byte[]));
Assert.IsInstanceOfType(plainbytes, typeof(byte[]));
CollectionAssert.AreEqual(message, plainbytes);
}
public byte[] Decipher(byte[] data)
{
RSAParameters parameters = rsa.ExportParameters();
int keySize = parameters.Modulus.Length;
List <byte[]> blocks = BlockCipherSupport.DivideIntoBlocks(data, keySize);
for (int i = 0; i < blocks.Count; i++)
{
blocks[i] = rsa.Decrypt(blocks[i]);
blocks[i] = BlockCipherSupport.PadWithZeros(blocks[i], BlockSize);
}
return(BlockCipherSupport.RemovePadding(BlockCipherSupport.ConcatenateBlocks(blocks)));
}
private List <byte[]> DecipherBlocks(List <byte[]> blocks)
{
List <byte[]> decipheredBlocks = new List <byte[]>(blocks.Count);
for (int i = 0; i < blocks.Count; i++)
{
BigInteger cipheredPreviousBlock = GetCipheredPreviousBlock(blocks, i);
decipheredBlocks.Add(rsa.Decrypt(blocks[i]));
BigInteger decipheredBlock = BigIntegerExtensions.UnsignedFromBytes(decipheredBlocks[i]);
decipheredBlock ^= cipheredPreviousBlock;
decipheredBlocks[i] = BigIntegerExtensions.UnsignedToBytes(decipheredBlock);
decipheredBlocks[i] = BlockCipherSupport.PadWithZeros(decipheredBlocks[i], BlockSize);
}
return(decipheredBlocks);
}
private List <byte[]> DecipherBlocks(List <byte[]> blocks)
{
List <byte[]> decipheredBlocks = new List <byte[]>(blocks.Count);
for (int i = 0; i < blocks.Count; i++)
{
var previousXor = CalculatePreviousXor(blocks, i, decipheredBlocks);
decipheredBlocks.Add(rsa.Decrypt(blocks[i]));
var decipheredBlock = BigIntegerExtensions.UnsignedFromBytes(decipheredBlocks[i]);
decipheredBlock ^= previousXor;
decipheredBlocks[i] = BigIntegerExtensions.UnsignedToBytes(decipheredBlock).Take(BlockSize).ToArray();
decipheredBlocks[i] = BlockCipherSupport.PadWithZeros(decipheredBlocks[i], BlockSize);
}
return(decipheredBlocks);
}
