public static bool QuantSeq <U>(Dafny.Sequence <U> seq, bool frall, System.Predicate <U> pred)
{
foreach (var u in seq.Elements)
{
if (pred(u) != frall)
{
return(!frall);
}
}
return(frall);
}
/** Invoke PySSZ through an helper Python script to calculate the Merkle
* hash root of a Bitlist
*
* @param bitlist The bitlist as a raw sequence of bool (without the
* bit used as a sentinel for the length)
* @param bitlistInBytes The raw bitlist (i.e. without the bit used
* as a sentinel for the length)encoded as a
* sequence of bytes.
* @param limit The bitlist limit
* @returns The hashtree root of the supplied bitlist
*
* @note The reason for having both bitlist and bitlistInBytes parameters
* is that the former is used by the PySSZ bridge and the latter is used
* by the PrysmaticLab bridge.
*/
public static Dafny.Sequence <byte> BitlistRoot(Dafny.Sequence <bool> bitlist, Dafny.Sequence <byte> bitlistInBytes, BigInteger limit)
{
// Convert bitlist into a byte array
byte[] bl = new byte[bitlist.Elements.Length];
for (int i = 0; i < bitlist.Elements.Length; i++)
{
if (bitlist.Elements[i])
{
bl[i] = 1;
}
else
{
bl[i] = 0;
}
}
// Set command and command line
ProcessStartInfo start = new ProcessStartInfo();
start.FileName = "python3";
start.Arguments = "PySszBitlistMerkleisation.py " + limit;
// Set redirections for stdout and stdin
start.UseShellExecute = false;
start.RedirectStandardOutput = true;
start.RedirectStandardInput = true;
// Start the process
Process cmdProcess = new Process();
cmdProcess.StartInfo = start;
cmdProcess.Start();
// Write to the process stdin in binary format and then closes
// the stream
var bw = new BinaryWriter(cmdProcess.StandardInput.BaseStream);
bw.Write(bl);
cmdProcess.StandardInput.Close();
cmdProcess.WaitForExit();
// Read from the process stdout in binary format and store the
// read data in a byte array
var br = new BinaryReader(cmdProcess.StandardOutput.BaseStream);
byte[] retBytes = br.ReadBytes(32);
// Convert the C# byte array containing the data read from the
// process stdout to a Dafny sequence of byte
return(Dafny.Sequence <byte> .FromElements(retBytes));
}
public Result <Dafny.Sequence <char> > Get(Dafny.Sequence <char> key)
{
String result;
if (content.TryGetValue(key.ToString(), out result))
{
return(Result <Dafny.Sequence <char> > .create_Success(
Dafny.Sequence <char> .FromString(result)));
}
else
{
return(Result <Dafny.Sequence <char> > .create_Failure(
Dafny.Sequence <char> .FromString("key not found")));
}
}
public static Dafny.Sequence <byte> ListBytes32Root(Dafny.Sequence <Dafny.Sequence <byte> > listOfBytes32, BigInteger limit)
{
// Build the list of arguments for the Python script
List <String> arguments = new List <String>();
arguments.Add(limit.ToString());
foreach (Dafny.Sequence <byte> s in listOfBytes32.Elements)
{
foreach (BigInteger n in s.Elements)
{
arguments.Add(n.ToString());
}
}
// Set command and command line
ProcessStartInfo start = new ProcessStartInfo();
start.FileName = "python3";
start.Arguments = "PySszListOfBytes32Merkleisation.py " + String.Join(" ", arguments.ToArray());
// Set redirections for stdout and stdin
start.UseShellExecute = false;
start.RedirectStandardOutput = true;
// Start the process
Process cmdProcess = new Process();
cmdProcess.StartInfo = start;
cmdProcess.Start();
// Read from the process stdout in binary format and store the
// read data in a byte array
var br = new BinaryReader(cmdProcess.StandardOutput.BaseStream);
byte[] retBytes = br.ReadBytes(32);
// Convert the C# byte array containing the data read from the
// process stdout to a Dafny sequence of byte
return(Dafny.Sequence <byte> .FromElements(retBytes));
}
/** Invoke PySSZ through an helper Python script to calculate the Merkle
* hash root of a Vector of Bytes
*/
public static Dafny.Sequence <byte> BytesRoot(Dafny.Sequence <byte> bs)
{
ProcessStartInfo start = new ProcessStartInfo();
// Set command and command line
start.FileName = "python3";
start.Arguments = "PySszBytesMerkleisation.py";
// Set redirections for stdin and stdout
start.UseShellExecute = false;
start.RedirectStandardOutput = true;
start.RedirectStandardInput = true;
// Start the process
Process cmdProcess = new Process();
cmdProcess.StartInfo = start;
cmdProcess.Start();
// Write to the process stdin in binary format and then closes
// the stream
var bw = new BinaryWriter(cmdProcess.StandardInput.BaseStream);
bw.Write(bs.Elements);
cmdProcess.StandardInput.Close();
// Read from the process stdout in binary format and store the
// read data in a byte array
var br = new BinaryReader(cmdProcess.StandardOutput.BaseStream);
byte[] retBytes = br.ReadBytes(32);
// Convert the C# byte array containing the data read from the
// process stdout to a Dafny sequence of byte
return(Dafny.Sequence <byte> .FromElements(retBytes));
}
public void Put(Dafny.Sequence <char> key, Dafny.Sequence <char> value)
{
Console.WriteLine("C# Externs.StringMap.Put is called");
this.content.Add(key.ToString(), value.ToString());
}
public static void readln(out Dafny.Sequence <char> line)
{
string result = System.Console.ReadLine();
line = new Dafny.Sequence <char>((result == null ? "\0" : result).ToCharArray());
}
public static int parse(Dafny.Sequence <char> str)
{
return(System.Int32.Parse(str.ToString()));
}
// hash calculates the SHA256 of `data`
public static Dafny.Sequence <byte> hash(Dafny.Sequence <byte> data)
{
SHA256 sha = SHA256.Create();
return(Dafny.Sequence <byte> .FromElements(sha.ComputeHash(data.Elements)));
}
public void @get__random(BigInteger countb, out Dafny.Sequence<BigInteger> @result)
{
int counti = (int)countb;
BigInteger[] bary = new BigInteger[counti];
for (int i = 0; i < counti; i++)
{
int rand = rng.Next() & 0xff;
bary[i] = new BigInteger(rand);
}
@result = new Dafny.Sequence<BigInteger>(bary);
display_seq(bary);
}
public static void @CopySeqIntoArray <A>(Dafny.Sequence <A> src, ulong srcIndex, A[] dst, ulong dstIndex, ulong len)
{
System.Array.Copy(src.Elements, (long)srcIndex, dst, (long)dstIndex, (long)len);
}
