1 files changed, 55 insertions, 0 deletions
diff --git a/crypto/src/crypto/parameters/GOST3410KeyGenerationParameters.cs b/crypto/src/crypto/parameters/GOST3410KeyGenerationParameters.cs
new file mode 100644
index 000000000..b06a5d896
--- /dev/null
+++ b/crypto/src/crypto/parameters/GOST3410KeyGenerationParameters.cs
@@ -0,0 +1,55 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.CryptoPro;
+using Org.BouncyCastle.Security;
+
+namespace Org.BouncyCastle.Crypto.Parameters
+{
+ public class Gost3410KeyGenerationParameters
+ : KeyGenerationParameters
+ {
+ private readonly Gost3410Parameters parameters;
+ private readonly DerObjectIdentifier publicKeyParamSet;
+
+ public Gost3410KeyGenerationParameters(
+ SecureRandom random,
+ Gost3410Parameters parameters)
+ : base(random, parameters.P.BitLength - 1)
+ {
+ this.parameters = parameters;
+ }
+
+ public Gost3410KeyGenerationParameters(
+ SecureRandom random,
+ DerObjectIdentifier publicKeyParamSet)
+ : this(random, LookupParameters(publicKeyParamSet))
+ {
+ this.publicKeyParamSet = publicKeyParamSet;
+ }
+
+ public Gost3410Parameters Parameters
+ {
+ get { return parameters; }
+ }
+
+ public DerObjectIdentifier PublicKeyParamSet
+ {
+ get { return publicKeyParamSet; }
+ }
+
+ private static Gost3410Parameters LookupParameters(
+ DerObjectIdentifier publicKeyParamSet)
+ {
+ if (publicKeyParamSet == null)
+ throw new ArgumentNullException("publicKeyParamSet");
+
+ Gost3410ParamSetParameters p = Gost3410NamedParameters.GetByOid(publicKeyParamSet);
+
+ if (p == null)
+ throw new ArgumentException("OID is not a valid CryptoPro public key parameter set", "publicKeyParamSet");
+
+ return new Gost3410Parameters(p.P, p.Q, p.A);
+ }
+ }
+}
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