public void DecodeTest()
{
EncryptionParameters parms = new EncryptionParameters(SchemeType.BFV)
{
PlainModulus = new SmallModulus(1024)
};
SEALContext context = SEALContext.Create(parms);
IntegerEncoder encoder = new IntegerEncoder(context);
Plaintext plain = new Plaintext("0x^5 + 1x^4 + 1x^3 + 1x^1 + 0");
Assert.AreEqual(6ul, plain.CoeffCount);
ulong resultU64 = encoder.DecodeUInt64(plain);
Assert.AreEqual(26UL, resultU64);
long resultI64 = encoder.DecodeInt64(plain);
Assert.AreEqual(26L, resultI64);
uint resultU32 = encoder.DecodeUInt32(plain);
Assert.AreEqual(26U, resultU32);
int resultI32 = encoder.DecodeInt32(plain);
Assert.AreEqual(26, resultI32);
BigUInt bui = encoder.DecodeBigUInt(plain);
Assert.IsNotNull(bui);
Assert.AreEqual(0, bui.CompareTo(26ul));
}
public void DecodeTest()
{
IntegerEncoder encoder = new IntegerEncoder(GlobalContext.BFVContext);
Plaintext plain = new Plaintext("0x^5 + 1x^4 + 1x^3 + 1x^1 + 0");
Assert.AreEqual(6ul, plain.CoeffCount);
ulong resultU64 = encoder.DecodeUInt64(plain);
Assert.AreEqual(26UL, resultU64);
long resultI64 = encoder.DecodeInt64(plain);
Assert.AreEqual(26L, resultI64);
uint resultU32 = encoder.DecodeUInt32(plain);
Assert.AreEqual(26U, resultU32);
int resultI32 = encoder.DecodeInt32(plain);
Assert.AreEqual(26, resultI32);
BigUInt bui = encoder.DecodeBigUInt(plain);
Assert.IsNotNull(bui);
Assert.AreEqual(0, bui.CompareTo(26ul));
}
public ulong decryptDistance(string publicFile, string secretFile, string distanceFile)
{
using EncryptionParameters parms = new EncryptionParameters(SchemeType.BFV);
ulong polyModulusDegree = 4096;
parms.PolyModulusDegree = polyModulusDegree;
parms.CoeffModulus = CoeffModulus.BFVDefault(polyModulusDegree);
parms.PlainModulus = new Modulus(1024);
using SEALContext context = new SEALContext(parms);
using KeyGenerator keygen = new KeyGenerator(context);
using PublicKey riderPub = new PublicKey();
using (var sr = new StreamReader(publicFile))
{
riderPub.Load(context, sr.BaseStream);
}
using SecretKey riderSec = new SecretKey();
using (var sr = new StreamReader(secretFile))
{
riderSec.Load(context, sr.BaseStream);
}
using Ciphertext X2MinusX1SquaredPlusY2MinusY1Squared = new Ciphertext();
using (var sr = new StreamReader(distanceFile))
{
X2MinusX1SquaredPlusY2MinusY1Squared.Load(context, sr.BaseStream);
}
using Encryptor riderEncryptor = new Encryptor(context, riderPub);
using Decryptor riderDecryptor = new Decryptor(context, riderSec);
using Plaintext distance = new Plaintext();
riderDecryptor.Decrypt(X2MinusX1SquaredPlusY2MinusY1Squared, distance);
using IntegerEncoder encoder = new IntegerEncoder(context);
//Console.WriteLine("Decrypted polynomial f(x) = {0}.", distance );
//Console.WriteLine(" distance from rider {0}", encoder.DecodeUInt64(distance));
return(encoder.DecodeUInt64(distance));
}