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þ½Ž¿using System;
using System.Text;
using System.Runtime.InteropServices;
namespace mcl {
class BLS256 {
const int IoEcComp = 512; // fixed byte representation
public const int maxUnitSize = 4;
[DllImport("bls256.dll")]
public static extern int blsInit(int curve, int maxUnitSize);
[DllImport("bls256.dll")]
public static extern int blsIdIsSame(ref Id lhs, ref Id rhs);
[DllImport("bls256.dll")]
public static extern int blsIdSetStr(ref Id id, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern ulong blsIdGetStr(ref Id id, [Out]StringBuilder buf, ulong maxBufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern void blsIdSet(ref Id id, ref ulong p);
[DllImport("bls256.dll")]
public static extern int blsSecretKeyIsSame(ref SecretKey lhs, ref SecretKey rhs);
[DllImport("bls256.dll")]
public static extern void blsSecretKeySetArray(ref SecretKey sec, ref ulong p);
[DllImport("bls256.dll")]
public static extern int blsSecretKeySetStr(ref SecretKey sec, [In][MarshalAs(UnmanagedType.LPStr)] string buf, ulong bufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern ulong blsSecretKeyGetStr(ref SecretKey sec, [Out]StringBuilder buf, ulong maxBufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern void blsSecretKeyAdd(ref SecretKey sec, ref SecretKey rhs);
[DllImport("bls256.dll")]
public static extern void blsSecretKeyInit(ref SecretKey sec);
[DllImport("bls256.dll")]
public static extern void blsSecretKeyGetPublicKey(ref SecretKey sec, ref PublicKey pub);
[DllImport("bls256.dll")]
public static extern void blsSecretKeySign(ref SecretKey sec, ref Sign sign, [In][MarshalAs(UnmanagedType.LPStr)] string m, ulong size);
[DllImport("bls256.dll")]
public static extern int blsSecretKeySet(ref SecretKey sec, ref SecretKey msk, ulong k, ref Id id);
[DllImport("bls256.dll")]
public static extern int blsSecretKeyRecover(ref SecretKey sec, ref SecretKey secVec, ref Id idVec, ulong n);
[DllImport("bls256.dll")]
public static extern void blsSecretKeyGetPop(ref SecretKey sec, ref Sign sign);
[DllImport("bls256.dll")]
public static extern int blsPublicKeyIsSame(ref PublicKey lhs, ref PublicKey rhs);
[DllImport("bls256.dll")]
public static extern void blsPublicKeyPut(ref PublicKey pub);
[DllImport("bls256.dll")]
public static extern void blsPublicKeyCopy(ref PublicKey dst, ref PublicKey src);
[DllImport("bls256.dll")]
public static extern int blsPublicKeySetStr(ref PublicKey pub, ref byte buf, int bufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern ulong blsPublicKeyGetStr(ref PublicKey pub, ref byte buf, int maxBufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern void blsPublicKeyAdd(ref PublicKey pub, ref PublicKey rhs);
[DllImport("bls256.dll")]
public static extern int blsPublicKeySet(ref PublicKey pub, ref PublicKey mpk, ulong k, ref Id id);
[DllImport("bls256.dll")]
public static extern int blsPublicKeyRecover(ref PublicKey pub, ref PublicKey pubVec, ref Id idVec, ulong n);
[DllImport("bls256.dll")]
public static extern int blsSignIsSame(ref Sign lhs, ref Sign rhs);
[DllImport("bls256.dll")]
public static extern int blsSignSetStr(ref Sign sign, ref byte buf, int bufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern ulong blsSignGetStr(ref Sign sign, ref byte buf, int maxBufSize, int ioMode);
[DllImport("bls256.dll")]
public static extern void blsSignAdd(ref Sign sign, ref Sign rhs);
[DllImport("bls256.dll")]
public static extern int blsSignRecover(ref Sign sign, ref Sign signVec, ref Id idVec, ulong n);
[DllImport("bls256.dll")]
public static extern int blsSignVerify(ref Sign sign, ref PublicKey pub, [In][MarshalAs(UnmanagedType.LPStr)] string m, ulong size);
[DllImport("bls256.dll")]
public static extern int blsSignVerifyPop(ref Sign sign, ref PublicKey pub);
static string ConvertByteToHexStr(byte[] b, int size)
{
String s = "";
for (int i = 0; i < size; i++) {
s += Buffer.GetByte(b, i).ToString("x2");
}
return s;
}
static byte[] ConvertHexStrToByte(string s)
{
if ((s.Length & 1) == 1) {
throw new ArgumentException("ConvertHexStrToByte odd length");
}
int n = s.Length / 2;
byte[] b = new byte[n];
for (int i = 0; i < n; i++) {
int x = Convert.ToInt32(s.Substring(i * 2, 2), 16);
b[i] = (byte)x;
}
return b;
}
public static void Init()
{
const int CurveFp254BNb = 0;
if (!System.Environment.Is64BitProcess) {
throw new PlatformNotSupportedException("not 64-bit system");
}
int err = blsInit(CurveFp254BNb, maxUnitSize);
if (err != 0) {
throw new ArgumentException("blsInit");
}
}
public struct Id {
private ulong v0, v1, v2, v3;
public bool IsSame(Id rhs)
{
return blsIdIsSame(ref this, ref rhs) != 0;
}
public void SetStr(String s, int ioMode)
{
if (blsIdSetStr(ref this, s, (ulong)s.Length, ioMode) != 0) {
throw new ArgumentException("blsIdSetStr:" + s);
}
}
public void SetInt(int x)
{
v0 = (uint)x;
v1 = v2 = v3 = 0;
}
public string GetStr(int ioMode)
{
StringBuilder sb = new StringBuilder(1024);
ulong size = blsIdGetStr(ref this, sb, (ulong)sb.Capacity, ioMode);
if (size == 0) {
throw new ArgumentException("blsIdGetStr");
}
return sb.ToString(0, (int)size);
}
public override string ToString()
{
return GetStr(16);
}
public void SetArray(ulong[] p)
{
int n = p.Length;
if (n != maxUnitSize) {
throw new ArgumentException("SetArray:" + n.ToString());
}
blsIdSet(ref this, ref p[0]);
}
}
public struct SecretKey {
private ulong v0, v1, v2, v3;
public bool IsSame(SecretKey rhs)
{
return blsSecretKeyIsSame(ref this, ref rhs) != 0;
}
public void SetStr(String s, int ioMode)
{
if (blsSecretKeySetStr(ref this, s, (ulong)s.Length, ioMode) != 0) {
throw new ArgumentException("blsSecretKeySetStr:" + s);
}
}
public string GetStr(int ioMode)
{
StringBuilder sb = new StringBuilder(1024);
ulong size = blsSecretKeyGetStr(ref this, sb, (ulong)sb.Capacity, ioMode);
if (size == 0) {
throw new ArgumentException("blsSecretKeyGetStr");
}
return sb.ToString(0, (int)size);
}
public override string ToString()
{
return GetStr(16);
}
public void SetArray(ulong[] p)
{
int n = p.Length;
if (n != maxUnitSize) {
throw new ArgumentException("SetArray:" + n.ToString());
}
blsSecretKeySetArray(ref this, ref p[0]);
}
public void Add(SecretKey rhs)
{
blsSecretKeyAdd(ref this, ref rhs);
}
public void Init()
{
blsSecretKeyInit(ref this);
}
public PublicKey GetPublicKey()
{
PublicKey pub = new PublicKey();
blsSecretKeyGetPublicKey(ref this, ref pub);
return pub;
}
public Sign Sign(String m)
{
Sign sign = new Sign();
blsSecretKeySign(ref this, ref sign, m, (ulong)m.Length);
return sign;
}
}
// secretKey = sum_{i=0}^{msk.Length - 1} msk[i] * id^i
public static SecretKey ShareSecretKey(SecretKey[] msk, Id id)
{
SecretKey sec = new SecretKey();
if (blsSecretKeySet(ref sec, ref msk[0], (ulong)msk.Length, ref id) != 0) {
throw new ArgumentException("GetSecretKeyForId:" + id.ToString());
}
return sec;
}
public static SecretKey RecoverSecretKey(SecretKey[] secs, Id[] ids)
{
SecretKey sec = new SecretKey();
if (blsSecretKeyRecover(ref sec, ref secs[0], ref ids[0], (ulong)secs.Length) != 0) {
throw new ArgumentException("Recover");
}
return sec;
}
public struct PublicKey {
private ulong v00, v01, v02, v03, v04, v05, v06, v07, v08, v09, v10, v11;
private ulong v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23;
public bool IsSame(PublicKey rhs)
{
return blsPublicKeyIsSame(ref this, ref rhs) != 0;
}
public void SetStr(String s)
{
byte[] b = ConvertHexStrToByte(s);
if (blsPublicKeySetStr(ref this, ref b[0], b.Length, IoEcComp) != 0) {
throw new ArgumentException("blsPublicKeySetStr:" + s);
}
}
public override string ToString()
{
byte[] b = new byte[1024];
int size = (int)blsPublicKeyGetStr(ref this, ref b[0], b.Length, IoEcComp);
if (size == 0) {
throw new ArgumentException("blsPublicKeyGetStr");
}
return ConvertByteToHexStr(b, size);
}
public void Add(PublicKey rhs)
{
blsPublicKeyAdd(ref this, ref rhs);
}
public bool Verify(Sign sign, string m)
{
return blsSignVerify(ref sign, ref this, m, (ulong)m.Length) == 1;
}
}
// publicKey = sum_{i=0}^{mpk.Length - 1} mpk[i] * id^i
public static PublicKey SharePublicKey(PublicKey[] mpk, Id id)
{
PublicKey pub = new PublicKey();
if (blsPublicKeySet(ref pub, ref mpk[0], (ulong)mpk.Length, ref id) != 0) {
throw new ArgumentException("GetPublicKeyForId:" + id.ToString());
}
return pub;
}
public static PublicKey RecoverPublicKey(PublicKey[] pubs, Id[] ids)
{
PublicKey pub = new PublicKey();
if (blsPublicKeyRecover(ref pub, ref pubs[0], ref ids[0], (ulong)pubs.Length) != 0) {
throw new ArgumentException("Recover");
}
return pub;
}
public struct Sign {
private ulong v00, v01, v02, v03, v04, v05, v06, v07, v08, v09, v10, v11;
public bool IsSame(Sign rhs)
{
return blsSignIsSame(ref this, ref rhs) != 0;
}
public void SetStr(String s)
{
byte[] b = ConvertHexStrToByte(s);
if (blsSignSetStr(ref this, ref b[0], b.Length, IoEcComp) != 0) {
throw new ArgumentException("blsSignSetStr:" + s);
}
}
public override string ToString()
{
byte[] b = new byte[1024];
int size = (int)blsSignGetStr(ref this, ref b[0], b.Length, IoEcComp);
if (size == 0) {
throw new ArgumentException("blsSignGetStr");
}
return ConvertByteToHexStr(b, size);
}
public void Add(Sign rhs)
{
blsSignAdd(ref this, ref rhs);
}
}
public static Sign RecoverSign(Sign[] signs, Id[] ids)
{
Sign sign = new Sign();
if (blsSignRecover(ref sign, ref signs[0], ref ids[0], (ulong)signs.Length) != 0) {
throw new ArgumentException("Recover");
}
return sign;
}
}
}
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