GetPrimeCurveBlob() [2/2]

static unsafe byte[] System.Security.Cryptography.ECCng.GetPrimeCurveBlob ( ref ECParameters parameters, bool ecdh )

inlinestaticpackage

Definition at line 119 of file ECCng.cs.

    {
        bool flag = parameters.D != null;
        ECCurve curve = parameters.Curve;
        int num = sizeof(global::Interop.BCrypt.BCRYPT_ECCFULLKEY_BLOB) + curve.Prime.Length + curve.A.Length + curve.B.Length + curve.G.X.Length + curve.G.Y.Length + curve.Order.Length + curve.Cofactor.Length + ((curve.Seed != null) ? curve.Seed.Length : 0) + parameters.Q.X.Length + parameters.Q.Y.Length;
        if (flag)
        {
            num += parameters.D.Length;
        }
        byte[] array = new byte[num];
        fixed (byte* ptr = &array[0])
        {
            global::Interop.BCrypt.BCRYPT_ECCFULLKEY_BLOB* ptr2 = (global::Interop.BCrypt.BCRYPT_ECCFULLKEY_BLOB*)ptr;
            ptr2->Version = 1;
            ptr2->Magic = ((!flag) ? (ecdh ? global::Interop.BCrypt.KeyBlobMagicNumber.BCRYPT_ECDH_PUBLIC_GENERIC_MAGIC : global::Interop.BCrypt.KeyBlobMagicNumber.BCRYPT_ECDSA_PUBLIC_GENERIC_MAGIC) : (ecdh ? global::Interop.BCrypt.KeyBlobMagicNumber.BCRYPT_ECDH_PRIVATE_GENERIC_MAGIC : global::Interop.BCrypt.KeyBlobMagicNumber.BCRYPT_ECDSA_PRIVATE_GENERIC_MAGIC));
            ptr2->cbCofactor = curve.Cofactor.Length;
            ptr2->cbFieldLength = parameters.Q.X.Length;
            ptr2->cbSeed = ((curve.Seed != null) ? curve.Seed.Length : 0);
            ptr2->cbSubgroupOrder = curve.Order.Length;
            ptr2->CurveGenerationAlgId = GetHashAlgorithmId(curve.Hash);
            ptr2->CurveType = ConvertToCurveTypeEnum(curve.CurveType);
            int offset = sizeof(global::Interop.BCrypt.BCRYPT_ECCFULLKEY_BLOB);
            global::Interop.BCrypt.Emit(array, ref offset, curve.Prime);
            global::Interop.BCrypt.Emit(array, ref offset, curve.A);
            global::Interop.BCrypt.Emit(array, ref offset, curve.B);
            global::Interop.BCrypt.Emit(array, ref offset, curve.G.X);
            global::Interop.BCrypt.Emit(array, ref offset, curve.G.Y);
            global::Interop.BCrypt.Emit(array, ref offset, curve.Order);
            global::Interop.BCrypt.Emit(array, ref offset, curve.Cofactor);
            if (curve.Seed != null)
            {
                global::Interop.BCrypt.Emit(array, ref offset, curve.Seed);
            }
            global::Interop.BCrypt.Emit(array, ref offset, parameters.Q.X);
            global::Interop.BCrypt.Emit(array, ref offset, parameters.Q.Y);
            if (flag)
            {
                global::Interop.BCrypt.Emit(array, ref offset, parameters.D);
            }
        }
        return array;
    }

References System.Security.Cryptography.ECCurve.A, System.array, System.Security.Cryptography.ECCurve.B, System.Security.Cryptography.ECCurve.Cofactor, System.Security.Cryptography.ECCng.ConvertToCurveTypeEnum(), System.Security.Cryptography.ECCurve.CurveType, System.Security.Cryptography.ECCurve.G, System.Security.Cryptography.ECCng.GetHashAlgorithmId(), System.Security.Cryptography.ECCurve.Hash, System.offset, System.Security.Cryptography.ECCurve.Order, System.Security.Cryptography.ECCurve.Prime, System.Security.Cryptography.ECCurve.Seed, System.Security.Cryptography.ECPoint.X, and System.Security.Cryptography.ECPoint.Y.