SM2KeyExchangePrivateParameters.cs 2.4 KB

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  1. #if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
  2. #pragma warning disable
  3. using System;
  4. using BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC;
  5. namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters
  6. {
  7. /// <summary>Private parameters for an SM2 key exchange.</summary>
  8. /// <remarks>The ephemeralPrivateKey is used to calculate the random point used in the algorithm.</remarks>
  9. public class SM2KeyExchangePrivateParameters
  10. : ICipherParameters
  11. {
  12. private readonly bool mInitiator;
  13. private readonly ECPrivateKeyParameters mStaticPrivateKey;
  14. private readonly ECPoint mStaticPublicPoint;
  15. private readonly ECPrivateKeyParameters mEphemeralPrivateKey;
  16. private readonly ECPoint mEphemeralPublicPoint;
  17. public SM2KeyExchangePrivateParameters(
  18. bool initiator,
  19. ECPrivateKeyParameters staticPrivateKey,
  20. ECPrivateKeyParameters ephemeralPrivateKey)
  21. {
  22. if (staticPrivateKey == null)
  23. throw new ArgumentNullException("staticPrivateKey");
  24. if (ephemeralPrivateKey == null)
  25. throw new ArgumentNullException("ephemeralPrivateKey");
  26. ECDomainParameters parameters = staticPrivateKey.Parameters;
  27. if (!parameters.Equals(ephemeralPrivateKey.Parameters))
  28. throw new ArgumentException("Static and ephemeral private keys have different domain parameters");
  29. this.mInitiator = initiator;
  30. this.mStaticPrivateKey = staticPrivateKey;
  31. this.mStaticPublicPoint = parameters.G.Multiply(staticPrivateKey.D).Normalize();
  32. this.mEphemeralPrivateKey = ephemeralPrivateKey;
  33. this.mEphemeralPublicPoint = parameters.G.Multiply(ephemeralPrivateKey.D).Normalize();
  34. }
  35. public virtual bool IsInitiator
  36. {
  37. get { return mInitiator; }
  38. }
  39. public virtual ECPrivateKeyParameters StaticPrivateKey
  40. {
  41. get { return mStaticPrivateKey; }
  42. }
  43. public virtual ECPoint StaticPublicPoint
  44. {
  45. get { return mStaticPublicPoint; }
  46. }
  47. public virtual ECPrivateKeyParameters EphemeralPrivateKey
  48. {
  49. get { return mEphemeralPrivateKey; }
  50. }
  51. public virtual ECPoint EphemeralPublicPoint
  52. {
  53. get { return mEphemeralPublicPoint; }
  54. }
  55. }
  56. }
  57. #pragma warning restore
  58. #endif