44 lines
1.3 KiB
C#
44 lines
1.3 KiB
C#
using System;
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using Org.BouncyCastle.Asn1;
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using Org.BouncyCastle.Asn1.CryptoPro;
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using Org.BouncyCastle.Security;
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namespace Org.BouncyCastle.Crypto.Parameters;
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public class Gost3410KeyGenerationParameters : KeyGenerationParameters
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{
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private readonly Gost3410Parameters parameters;
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private readonly DerObjectIdentifier publicKeyParamSet;
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public Gost3410Parameters Parameters => parameters;
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public DerObjectIdentifier PublicKeyParamSet => publicKeyParamSet;
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public Gost3410KeyGenerationParameters(SecureRandom random, Gost3410Parameters parameters)
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: base(random, parameters.P.BitLength - 1)
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{
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this.parameters = parameters;
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}
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public Gost3410KeyGenerationParameters(SecureRandom random, DerObjectIdentifier publicKeyParamSet)
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: this(random, LookupParameters(publicKeyParamSet))
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{
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this.publicKeyParamSet = publicKeyParamSet;
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}
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private static Gost3410Parameters LookupParameters(DerObjectIdentifier publicKeyParamSet)
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{
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if (publicKeyParamSet == null)
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{
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throw new ArgumentNullException("publicKeyParamSet");
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}
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Gost3410ParamSetParameters byOid = Gost3410NamedParameters.GetByOid(publicKeyParamSet);
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if (byOid == null)
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{
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throw new ArgumentException("OID is not a valid CryptoPro public key parameter set", "publicKeyParamSet");
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}
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return new Gost3410Parameters(byOid.P, byOid.Q, byOid.A);
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}
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}
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