þ½Ž¿using System;
using System.Text;
using System.Runtime.InteropServices;
namespace mcl
{
class BLS
{
public const int BN254 = 0;
public const int BLS12_381 = 5;
const int IoEcComp = 512; // fixed byte representation
public const int FR_UNIT_SIZE = 4;
public const int FP_UNIT_SIZE = 6; // 4 if bls256.dll is used
public const int COMPILED_TIME_VAR = FR_UNIT_SIZE * 10 + FP_UNIT_SIZE;
public const int ID_UNIT_SIZE = FR_UNIT_SIZE;
public const int SECRETKEY_UNIT_SIZE = FR_UNIT_SIZE;
public const int PUBLICKEY_UNIT_SIZE = FP_UNIT_SIZE * 3 * 2;
public const int SIGNATURE_UNIT_SIZE = FP_UNIT_SIZE * 3;
public const int ID_SERIALIZE_SIZE = FR_UNIT_SIZE * 8;
public const int SECRETKEY_SERIALIZE_SIZE = FR_UNIT_SIZE * 8;
public const int PUBLICKEY_SERIALIZE_SIZE = FP_UNIT_SIZE * 8 * 2;
public const int SIGNATURE_SERIALIZE_SIZE = FP_UNIT_SIZE * 8;
public const string dllName = FP_UNIT_SIZE == 4 ? "bls256.dll" : "bls384_256.dll";
[DllImport(dllName)]
public static extern int blsInit(int curveType, int compiledTimeVar);
[DllImport(dllName)] public static extern void blsIdSetInt(ref Id id, int x);
[DllImport(dllName)] public static extern int blsIdSetDecStr(ref Id id, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
[DllImport(dllName)] public static extern int blsIdSetHexStr(ref Id id, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsIdGetDecStr([Out]StringBuilder buf, ulong maxBufSize, in Id id);
[DllImport(dllName)] public static extern ulong blsIdGetHexStr([Out]StringBuilder buf, ulong maxBufSize, in Id id);
[DllImport(dllName)] public static extern ulong blsIdSerialize([Out]byte[] buf, ulong maxBufSize, in Id id);
[DllImport(dllName)] public static extern ulong blsSecretKeySerialize([Out]byte[] buf, ulong maxBufSize, in SecretKey sec);
[DllImport(dllName)] public static extern ulong blsPublicKeySerialize([Out]byte[] buf, ulong maxBufSize, in PublicKey pub);
[DllImport(dllName)] public static extern ulong blsSignatureSerialize([Out]byte[] buf, ulong maxBufSize, in Signature sig);
[DllImport(dllName)] public static extern ulong blsIdDeserialize(ref Id id, [In]byte[] buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsSecretKeyDeserialize(ref SecretKey sec, [In]byte[] buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsPublicKeyDeserialize(ref PublicKey pub, [In]byte[] buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsSignatureDeserialize(ref Signature sig, [In]byte[] buf, ulong bufSize);
[DllImport(dllName)] public static extern int blsIdIsEqual(in Id lhs, in Id rhs);
[DllImport(dllName)] public static extern int blsSecretKeyIsEqual(in SecretKey lhs, in SecretKey rhs);
[DllImport(dllName)] public static extern int blsPublicKeyIsEqual(in PublicKey lhs, in PublicKey rhs);
[DllImport(dllName)] public static extern int blsSignatureIsEqual(in Signature lhs, in Signature rhs);
// add
[DllImport(dllName)] public static extern void blsSecretKeyAdd(ref SecretKey sec, in SecretKey rhs);
[DllImport(dllName)] public static extern void blsPublicKeyAdd(ref PublicKey pub, in PublicKey rhs);
[DllImport(dllName)] public static extern void blsSignatureAdd(ref Signature sig, in Signature rhs);
// hash buf and set
[DllImport(dllName)] public static extern int blsHashToSecretKey(ref SecretKey sec, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
/*
set secretKey if system has /dev/urandom or CryptGenRandom
return 0 if success else -1
*/
[DllImport(dllName)] public static extern int blsSecretKeySetByCSPRNG(ref SecretKey sec);
[DllImport(dllName)] public static extern void blsGetPublicKey(ref PublicKey pub, in SecretKey sec);
[DllImport(dllName)] public static extern void blsGetPop(ref Signature sig, in SecretKey sec);
// return 0 if success
[DllImport(dllName)] public static extern int blsSecretKeyShare(ref SecretKey sec, in SecretKey msk, ulong k, in Id id);
[DllImport(dllName)] public static extern int blsPublicKeyShare(ref PublicKey pub, in PublicKey mpk, ulong k, in Id id);
[DllImport(dllName)] public static extern int blsSecretKeyRecover(ref SecretKey sec, in SecretKey secVec, in Id idVec, ulong n);
[DllImport(dllName)] public static extern int blsPublicKeyRecover(ref PublicKey pub, in PublicKey pubVec, in Id idVec, ulong n);
[DllImport(dllName)] public static extern int blsSignatureRecover(ref Signature sig, in Signature sigVec, in Id idVec, ulong n);
[DllImport(dllName)] public static extern void blsSign(ref Signature sig, in SecretKey sec, [In][MarshalAs(UnmanagedType.LPStr)] string m, ulong size);
// return 1 if valid
[DllImport(dllName)] public static extern int blsVerify(in Signature sig, in PublicKey pub, [In][MarshalAs(UnmanagedType.LPStr)] string m, ulong size);
[DllImport(dllName)] public static extern int blsVerifyPop(in Signature sig, in PublicKey pub);
//////////////////////////////////////////////////////////////////////////
// the following apis will be removed
// mask buf with (1 << (bitLen(r) - 1)) - 1 if buf >= r
[DllImport(dllName)] public static extern int blsIdSetLittleEndian(ref Id id, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
/*
return written byte size if success else 0
*/
[DllImport(dllName)] public static extern ulong blsIdGetLittleEndian([Out]StringBuilder buf, ulong maxBufSize, in Id id);
// return 0 if success
// mask buf with (1 << (bitLen(r) - 1)) - 1 if buf >= r
[DllImport(dllName)] public static extern int blsSecretKeySetLittleEndian(ref SecretKey sec, [In]byte[] buf, ulong bufSize);
[DllImport(dllName)] public static extern int blsSecretKeySetDecStr(ref SecretKey sec, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
[DllImport(dllName)] public static extern int blsSecretKeySetHexStr(ref SecretKey sec, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
/*
return written byte size if success else 0
*/
[DllImport(dllName)] public static extern ulong blsSecretKeyGetLittleEndian([Out]byte[] buf, ulong maxBufSize, in SecretKey sec);
/*
return strlen(buf) if success else 0
buf is '\0' terminated
*/
[DllImport(dllName)] public static extern ulong blsSecretKeyGetDecStr([Out]StringBuilder buf, ulong maxBufSize, in SecretKey sec);
[DllImport(dllName)] public static extern ulong blsSecretKeyGetHexStr([Out]StringBuilder buf, ulong maxBufSize, in SecretKey sec);
[DllImport(dllName)] public static extern int blsPublicKeySetHexStr(ref PublicKey pub, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsPublicKeyGetHexStr([Out]StringBuilder buf, ulong maxBufSize, in PublicKey pub);
[DllImport(dllName)] public static extern int blsSignatureSetHexStr(ref Signature sig, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize);
[DllImport(dllName)] public static extern ulong blsSignatureGetHexStr([Out]StringBuilder buf, ulong maxBufSize, in Signature sig);
public static void Init(int curveType = BN254) {
if (!System.Environment.Is64BitProcess) {
throw new PlatformNotSupportedException("not 64-bit system");
}
int err = blsInit(curveType, COMPILED_TIME_VAR);
if (err != 0) {
throw new ArgumentException("blsInit");
}
}
[StructLayout(LayoutKind.Sequential)]
public unsafe struct Id
{
private fixed ulong v[ID_UNIT_SIZE];
public byte[] Serialize() {
byte[] buf = new byte[ID_SERIALIZE_SIZE];
ulong n = blsIdSerialize(buf, (ulong)buf.Length, this);
if (n == 0) {
throw new ArithmeticException("blsIdSerialize");
}
return buf;
}
public void Deserialize(byte[] buf) {
ulong n = blsIdDeserialize(ref this, buf, (ulong)buf.Length);
if (n == 0) {
throw new ArithmeticException("blsIdDeserialize");
}
}
public bool IsEqual(in Id rhs) {
return blsIdIsEqual(this, rhs) != 0;
}
public void SetDecStr(string s) {
if (blsIdSetDecStr(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsIdSetDecSt:" + s);
}
}
public void SetHexStr(string s) {
if (blsIdSetHexStr(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsIdSetHexStr:" + s);
}
}
public void SetInt(int x) {
blsIdSetInt(ref this, x);
}
public string GetDecStr() {
StringBuilder sb = new StringBuilder(1024);
ulong size = blsIdGetDecStr(sb, (ulong)sb.Capacity, this);
if (size == 0) {
throw new ArgumentException("blsIdGetDecStr");
}
return sb.ToString(0, (int)size);
}
public string GetHexStr() {
StringBuilder sb = new StringBuilder(1024);
ulong size = blsIdGetHexStr(sb, (ulong)sb.Capacity, this);
if (size == 0) {
throw new ArgumentException("blsIdGetHexStr");
}
return sb.ToString(0, (int)size);
}
}
[StructLayout(LayoutKind.Sequential)]
public unsafe struct SecretKey
{
private fixed ulong v[SECRETKEY_UNIT_SIZE];
public byte[] Serialize() {
byte[] buf = new byte[SECRETKEY_SERIALIZE_SIZE];
ulong n = blsSecretKeySerialize(buf, (ulong)buf.Length, this);
if (n == 0) {
throw new ArithmeticException("blsSecretKeySerialize");
}
return buf;
}
public void Deserialize(byte[] buf) {
ulong n = blsSecretKeyDeserialize(ref this, buf, (ulong)buf.Length);
if (n == 0) {
throw new ArithmeticException("blsSecretKeyDeserialize");
}
}
public bool IsEqual(in SecretKey rhs) {
return blsSecretKeyIsEqual(this, rhs) != 0;
}
public void SetHexStr(string s) {
if (blsSecretKeySetHexStr(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsSecretKeySetHexStr:" + s);
}
}
public string GetHexStr() {
StringBuilder sb = new StringBuilder(1024);
ulong size = blsSecretKeyGetHexStr(sb, (ulong)sb.Capacity, this);
if (size == 0) {
throw new ArgumentException("mclBnFr_getStr");
}
return sb.ToString(0, (int)size);
}
public void Add(in SecretKey rhs) {
blsSecretKeyAdd(ref this, rhs);
}
public void SetByCSPRNG() {
blsSecretKeySetByCSPRNG(ref this);
}
public void SetHashOf(string s) {
if (blsHashToSecretKey(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsHashToSecretKey");
}
}
public PublicKey GetPublicKey() {
PublicKey pub;
blsGetPublicKey(ref pub, this);
return pub;
}
public Signature Sign(string m) {
Signature sig;
blsSign(ref sig, this, m, (ulong)m.Length);
return sig;
}
public Signature GetPop() {
Signature sig;
blsGetPop(ref sig, this);
return sig;
}
}
// secretKey = sum_{i=0}^{msk.Length - 1} msk[i] * id^i
public static SecretKey ShareSecretKey(in SecretKey[] msk, in Id id) {
SecretKey sec;
if (blsSecretKeyShare(ref sec, msk[0], (ulong)msk.Length, id) != 0) {
throw new ArgumentException("GetSecretKeyForId:" + id.ToString());
}
return sec;
}
public static SecretKey RecoverSecretKey(in SecretKey[] secVec, in Id[] idVec) {
SecretKey sec;
if (blsSecretKeyRecover(ref sec, secVec[0], idVec[0], (ulong)secVec.Length) != 0) {
throw new ArgumentException("Recover");
}
return sec;
}
[StructLayout(LayoutKind.Sequential)]
public unsafe struct PublicKey
{
private fixed ulong v[PUBLICKEY_UNIT_SIZE];
public byte[] Serialize() {
byte[] buf = new byte[PUBLICKEY_SERIALIZE_SIZE];
ulong n = blsPublicKeySerialize(buf, (ulong)buf.Length, this);
if (n == 0) {
throw new ArithmeticException("blsPublicKeySerialize");
}
return buf;
}
public void Deserialize(byte[] buf) {
ulong n = blsPublicKeyDeserialize(ref this, buf, (ulong)buf.Length);
if (n == 0) {
throw new ArithmeticException("blsPublicKeyDeserialize");
}
}
public bool IsEqual(in PublicKey rhs) {
return blsPublicKeyIsEqual(this, rhs) != 0;
}
public void SetStr(string s) {
if (blsPublicKeySetHexStr(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsPublicKeySetStr:" + s);
}
}
public string GetHexStr() {
StringBuilder sb = new StringBuilder(1024);
ulong size = blsPublicKeyGetHexStr(sb, (ulong)sb.Capacity, this);
if (size == 0) {
throw new ArgumentException("blsPublicKeyGetStr");
}
return sb.ToString(0, (int)size);
}
public void Add(in PublicKey rhs) {
blsPublicKeyAdd(ref this, rhs);
}
public bool Verify(in Signature sig, string m) {
return blsVerify(sig, this, m, (ulong)m.Length) == 1;
}
public bool VerifyPop(in Signature pop) {
return blsVerifyPop(pop, this) == 1;
}
}
// publicKey = sum_{i=0}^{mpk.Length - 1} mpk[i] * id^i
public static PublicKey SharePublicKey(in PublicKey[] mpk, in Id id) {
PublicKey pub;
if (blsPublicKeyShare(ref pub, mpk[0], (ulong)mpk.Length, id) != 0) {
throw new ArgumentException("GetPublicKeyForId:" + id.ToString());
}
return pub;
}
public static PublicKey RecoverPublicKey(in PublicKey[] pubVec, in Id[] idVec) {
PublicKey pub;
if (blsPublicKeyRecover(ref pub, pubVec[0], idVec[0], (ulong)pubVec.Length) != 0) {
throw new ArgumentException("Recover");
}
return pub;
}
[StructLayout(LayoutKind.Sequential)]
public unsafe struct Signature
{
private fixed ulong v[SIGNATURE_UNIT_SIZE];
public byte[] Serialize() {
byte[] buf = new byte[SIGNATURE_SERIALIZE_SIZE];
ulong n = blsSignatureSerialize(buf, (ulong)buf.Length, this);
if (n == 0) {
throw new ArithmeticException("blsSignatureSerialize");
}
return buf;
}
public void Deserialize(byte[] buf) {
ulong n = blsSignatureDeserialize(ref this, buf, (ulong)buf.Length);
if (n == 0) {
throw new ArithmeticException("blsSignatureDeserialize");
}
}
public bool IsEqual(in Signature rhs) {
return blsSignatureIsEqual(this, rhs) != 0;
}
public void SetStr(string s) {
if (blsSignatureSetHexStr(ref this, s, (ulong)s.Length) != 0) {
throw new ArgumentException("blsSignatureSetStr:" + s);
}
}
public string GetHexStr() {
StringBuilder sb = new StringBuilder(1024);
ulong size = blsSignatureGetHexStr(sb, (ulong)sb.Capacity, this);
if (size == 0) {
throw new ArgumentException("blsSignatureGetStr");
}
return sb.ToString(0, (int)size);
}
public void Add(in Signature rhs) {
blsSignatureAdd(ref this, rhs);
}
}
public static Signature RecoverSign(in Signature[] sigVec, in Id[] idVec) {
Signature sig;
if (blsSignatureRecover(ref sig, sigVec[0], idVec[0], (ulong)sigVec.Length) != 0) {
throw new ArgumentException("Recover");
}
return sig;
}
}
}