52 lines
1.7 KiB
C#
52 lines
1.7 KiB
C#
using System;
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namespace Org.BouncyCastle.Crypto.Parameters;
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public class MqvPrivateParameters : ICipherParameters
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{
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private readonly ECPrivateKeyParameters staticPrivateKey;
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private readonly ECPrivateKeyParameters ephemeralPrivateKey;
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private readonly ECPublicKeyParameters ephemeralPublicKey;
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public virtual ECPrivateKeyParameters StaticPrivateKey => staticPrivateKey;
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public virtual ECPrivateKeyParameters EphemeralPrivateKey => ephemeralPrivateKey;
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public virtual ECPublicKeyParameters EphemeralPublicKey => ephemeralPublicKey;
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public MqvPrivateParameters(ECPrivateKeyParameters staticPrivateKey, ECPrivateKeyParameters ephemeralPrivateKey)
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: this(staticPrivateKey, ephemeralPrivateKey, null)
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{
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}
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public MqvPrivateParameters(ECPrivateKeyParameters staticPrivateKey, ECPrivateKeyParameters ephemeralPrivateKey, ECPublicKeyParameters ephemeralPublicKey)
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{
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if (staticPrivateKey == null)
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{
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throw new ArgumentNullException("staticPrivateKey");
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}
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if (ephemeralPrivateKey == null)
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{
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throw new ArgumentNullException("ephemeralPrivateKey");
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}
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ECDomainParameters parameters = staticPrivateKey.Parameters;
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if (!parameters.Equals(ephemeralPrivateKey.Parameters))
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{
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throw new ArgumentException("Static and ephemeral private keys have different domain parameters");
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}
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if (ephemeralPublicKey == null)
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{
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ephemeralPublicKey = new ECPublicKeyParameters(parameters.G.Multiply(ephemeralPrivateKey.D), parameters);
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}
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else if (!parameters.Equals(ephemeralPublicKey.Parameters))
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{
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throw new ArgumentException("Ephemeral public key has different domain parameters");
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}
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this.staticPrivateKey = staticPrivateKey;
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this.ephemeralPrivateKey = ephemeralPrivateKey;
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this.ephemeralPublicKey = ephemeralPublicKey;
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}
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}
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