using System; namespace Org.BouncyCastle.Crypto.Parameters { public class SM2KeyExchangePublicParameters : ICipherParameters { private readonly ECPublicKeyParameters mStaticPublicKey; private readonly ECPublicKeyParameters mEphemeralPublicKey; public virtual ECPublicKeyParameters StaticPublicKey => mStaticPublicKey; public virtual ECPublicKeyParameters EphemeralPublicKey => mEphemeralPublicKey; public SM2KeyExchangePublicParameters(ECPublicKeyParameters staticPublicKey, ECPublicKeyParameters ephemeralPublicKey) { if (staticPublicKey == null) throw new ArgumentNullException("staticPublicKey"); if (ephemeralPublicKey == null) throw new ArgumentNullException("ephemeralPublicKey"); if (!staticPublicKey.Parameters.Equals(ephemeralPublicKey.Parameters)) throw new ArgumentException("Static and ephemeral public keys have different domain parameters"); mStaticPublicKey = staticPublicKey; mEphemeralPublicKey = ephemeralPublicKey; } } }