using Renci.SshNet.Security.Org.BouncyCastle.Security; using System; namespace Renci.SshNet.Security.Org.BouncyCastle.Crypto.Parameters { internal abstract class ECKeyParameters : AsymmetricKeyParameter { private static readonly string[] algorithms = new string[2] { "EC", "ECDH" }; private readonly string algorithm; private readonly ECDomainParameters parameters; public string AlgorithmName => algorithm; public ECDomainParameters Parameters => parameters; protected ECKeyParameters(string algorithm, bool isPrivate, ECDomainParameters parameters) : base(isPrivate) { if (algorithm == null) throw new ArgumentNullException("algorithm"); if (parameters == null) throw new ArgumentNullException("parameters"); this.algorithm = VerifyAlgorithmName(algorithm); this.parameters = parameters; } public override bool Equals(object obj) { if (obj == this) return true; ECDomainParameters eCDomainParameters = obj as ECDomainParameters; if (eCDomainParameters == null) return false; return Equals(eCDomainParameters); } protected bool Equals(ECKeyParameters other) { if (parameters.Equals(other.parameters)) return Equals((AsymmetricKeyParameter)other); return false; } public override int GetHashCode() { return parameters.GetHashCode() ^ base.GetHashCode(); } internal ECKeyGenerationParameters CreateKeyGenerationParameters(SecureRandom random) { return new ECKeyGenerationParameters(parameters, random); } internal static string VerifyAlgorithmName(string algorithm) { if (Array.IndexOf(algorithms, algorithm, 0, algorithms.Length) < 0) throw new ArgumentException("unrecognised algorithm: " + algorithm, "algorithm"); return algorithm.ToUpper(); } } }