diff --git a/Crypto/src/asn1/cryptopro/GOST3410NamedParameters.cs b/Crypto/src/asn1/cryptopro/GOST3410NamedParameters.cs
new file mode 100644
index 000000000..66dba51d7
--- /dev/null
+++ b/Crypto/src/asn1/cryptopro/GOST3410NamedParameters.cs
@@ -0,0 +1,123 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+ /**
+ * table of the available named parameters for GOST 3410-94.
+ */
+ public sealed class Gost3410NamedParameters
+ {
+ private Gost3410NamedParameters()
+ {
+ }
+
+ private static readonly IDictionary objIds = Platform.CreateHashtable();
+ private static readonly IDictionary parameters = Platform.CreateHashtable();
+
+ private static readonly Gost3410ParamSetParameters cryptoProA = new Gost3410ParamSetParameters(
+ 1024,
+ new BigInteger("127021248288932417465907042777176443525787653508916535812817507265705031260985098497423188333483401180925999995120988934130659205614996724254121049274349357074920312769561451689224110579311248812610229678534638401693520013288995000362260684222750813532307004517341633685004541062586971416883686778842537820383"),
+ new BigInteger("68363196144955700784444165611827252895102170888761442055095051287550314083023"),
+ new BigInteger("100997906755055304772081815535925224869841082572053457874823515875577147990529272777244152852699298796483356699682842027972896052747173175480590485607134746852141928680912561502802222185647539190902656116367847270145019066794290930185446216399730872221732889830323194097355403213400972588322876850946740663962")
+ // validationAlgorithm {
+ // algorithm
+ // id-GostR3410-94-bBis,
+ // parameters
+ // GostR3410-94-ValidationBisParameters: {
+ // x0 1376285941,
+ // c 3996757427
+ // }
+ // }
+
+ );
+
+ private static readonly Gost3410ParamSetParameters cryptoProB = new Gost3410ParamSetParameters(
+ 1024,
+ new BigInteger("139454871199115825601409655107690713107041707059928031797758001454375765357722984094124368522288239833039114681648076688236921220737322672160740747771700911134550432053804647694904686120113087816240740184800477047157336662926249423571248823968542221753660143391485680840520336859458494803187341288580489525163"),
+ new BigInteger("79885141663410976897627118935756323747307951916507639758300472692338873533959"),
+ new BigInteger("42941826148615804143873447737955502392672345968607143066798112994089471231420027060385216699563848719957657284814898909770759462613437669456364882730370838934791080835932647976778601915343474400961034231316672578686920482194932878633360203384797092684342247621055760235016132614780652761028509445403338652341")
+ // validationAlgorithm {
+ // algorithm
+ // id-GostR3410-94-bBis,
+ // parameters
+ // GostR3410-94-ValidationBisParameters: {
+ // x0 1536654555,
+ // c 1855361757,
+ // d 14408629386140014567655
+ //4902939282056547857802241461782996702017713059974755104394739915140
+ //6115284791024439062735788342744854120601660303926203867703556828005
+ //8957203818114895398976594425537561271800850306
+ // }
+ // }
+ //}
+ );
+
+ private static readonly Gost3410ParamSetParameters cryptoProXchA = new Gost3410ParamSetParameters(
+ 1024,
+ new BigInteger("142011741597563481196368286022318089743276138395243738762872573441927459393512718973631166078467600360848946623567625795282774719212241929071046134208380636394084512691828894000571524625445295769349356752728956831541775441763139384457191755096847107846595662547942312293338483924514339614727760681880609734239"),
+ new BigInteger("91771529896554605945588149018382750217296858393520724172743325725474374979801"),
+ new BigInteger("133531813272720673433859519948319001217942375967847486899482359599369642528734712461590403327731821410328012529253871914788598993103310567744136196364803064721377826656898686468463277710150809401182608770201615324990468332931294920912776241137878030224355746606283971659376426832674269780880061631528163475887")
+ );
+
+ static Gost3410NamedParameters()
+ {
+ parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProA] = cryptoProA;
+ parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProB] = cryptoProB;
+ //parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProC] = cryptoProC;
+ //parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProD] = cryptoProD;
+ parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProXchA] = cryptoProXchA;
+ //parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProXchB] = cryptoProXchA;
+ //parameters[CryptoProObjectIdentifiers.GostR3410x94CryptoProXchC] = cryptoProXchA;
+
+ objIds["GostR3410-94-CryptoPro-A"] = CryptoProObjectIdentifiers.GostR3410x94CryptoProA;
+ objIds["GostR3410-94-CryptoPro-B"] = CryptoProObjectIdentifiers.GostR3410x94CryptoProB;
+ objIds["GostR3410-94-CryptoPro-XchA"] = CryptoProObjectIdentifiers.GostR3410x94CryptoProXchA;
+ }
+
+ /**
+ * return the GOST3410ParamSetParameters object for the given OID, null if it
+ * isn't present.
+ *
+ * @param oid an object identifier representing a named parameters, if present.
+ */
+ public static Gost3410ParamSetParameters GetByOid(
+ DerObjectIdentifier oid)
+ {
+ return (Gost3410ParamSetParameters) parameters[oid];
+ }
+
+ /**
+ * returns an enumeration containing the name strings for parameters
+ * contained in this structure.
+ */
+ public static IEnumerable Names
+ {
+ get { return new EnumerableProxy(objIds.Keys); }
+ }
+
+ public static Gost3410ParamSetParameters GetByName(
+ string name)
+ {
+ DerObjectIdentifier oid = (DerObjectIdentifier) objIds[name];
+
+ if (oid != null)
+ {
+ return (Gost3410ParamSetParameters) parameters[oid];
+ }
+
+ return null;
+ }
+
+ public static DerObjectIdentifier GetOid(
+ string name)
+ {
+ return (DerObjectIdentifier) objIds[name];
+ }
+ }
+}
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