Initial import of old CVS repository

7 files changed, 688 insertions, 0 deletions

diff --git a/crypto/src/asn1/cryptopro/CryptoProObjectIdentifiers.cs b/crypto/src/asn1/cryptopro/CryptoProObjectIdentifiers.cs
new file mode 100644
index 000000000..e2f2c1848
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/CryptoProObjectIdentifiers.cs
@@ -0,0 +1,51 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public abstract class CryptoProObjectIdentifiers
+    {
+        // GOST Algorithms OBJECT IDENTIFIERS :
+        // { iso(1) member-body(2) ru(643) rans(2) cryptopro(2)}
+        public const string GostID = "1.2.643.2.2";
+
+		public static readonly DerObjectIdentifier GostR3411 = new DerObjectIdentifier(GostID + ".9");
+        public static readonly DerObjectIdentifier GostR3411Hmac = new DerObjectIdentifier(GostID + ".10");
+
+        public static readonly DerObjectIdentifier GostR28147Cbc = new DerObjectIdentifier(GostID + ".21");
+
+        public static readonly DerObjectIdentifier ID_Gost28147_89_CryptoPro_A_ParamSet = new DerObjectIdentifier(GostID + ".31.1");
+
+        public static readonly DerObjectIdentifier GostR3410x94 = new DerObjectIdentifier(GostID + ".20");
+        public static readonly DerObjectIdentifier GostR3410x2001 = new DerObjectIdentifier(GostID + ".19");
+        public static readonly DerObjectIdentifier GostR3411x94WithGostR3410x94 = new DerObjectIdentifier(GostID + ".4");
+        public static readonly DerObjectIdentifier GostR3411x94WithGostR3410x2001 = new DerObjectIdentifier(GostID + ".3");
+
+		// { iso(1) member-body(2) ru(643) rans(2) cryptopro(2) hashes(30) }
+        public static readonly DerObjectIdentifier GostR3411x94CryptoProParamSet = new DerObjectIdentifier(GostID + ".30.1");
+
+		// { iso(1) member-body(2) ru(643) rans(2) cryptopro(2) signs(32) }
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProA = new DerObjectIdentifier(GostID + ".32.2");
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProB = new DerObjectIdentifier(GostID + ".32.3");
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProC = new DerObjectIdentifier(GostID + ".32.4");
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProD = new DerObjectIdentifier(GostID + ".32.5");
+
+		// { iso(1) member-body(2) ru(643) rans(2) cryptopro(2) exchanges(33) }
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProXchA = new DerObjectIdentifier(GostID + ".33.1");
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProXchB = new DerObjectIdentifier(GostID + ".33.2");
+        public static readonly DerObjectIdentifier GostR3410x94CryptoProXchC = new DerObjectIdentifier(GostID + ".33.3");
+
+		//{ iso(1) member-body(2)ru(643) rans(2) cryptopro(2) ecc-signs(35) }
+        public static readonly DerObjectIdentifier GostR3410x2001CryptoProA = new DerObjectIdentifier(GostID + ".35.1");
+        public static readonly DerObjectIdentifier GostR3410x2001CryptoProB = new DerObjectIdentifier(GostID + ".35.2");
+        public static readonly DerObjectIdentifier GostR3410x2001CryptoProC = new DerObjectIdentifier(GostID + ".35.3");
+
+		// { iso(1) member-body(2) ru(643) rans(2) cryptopro(2) ecc-exchanges(36) }
+        public static readonly DerObjectIdentifier GostR3410x2001CryptoProXchA  = new DerObjectIdentifier(GostID + ".36.0");
+        public static readonly DerObjectIdentifier GostR3410x2001CryptoProXchB  = new DerObjectIdentifier(GostID + ".36.1");
+
+		public static readonly DerObjectIdentifier GostElSgDH3410Default = new DerObjectIdentifier(GostID + ".36.0");
+        public static readonly DerObjectIdentifier GostElSgDH3410x1 = new DerObjectIdentifier(GostID + ".36.1");
+    }
+}
diff --git a/crypto/src/asn1/cryptopro/ECGOST3410NamedCurves.cs b/crypto/src/asn1/cryptopro/ECGOST3410NamedCurves.cs
new file mode 100644
index 000000000..998e0e06f
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/ECGOST3410NamedCurves.cs
@@ -0,0 +1,179 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Math.EC;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    /**
+    * table of the available named parameters for GOST 3410-2001.
+    */
+    public sealed class ECGost3410NamedCurves
+    {
+		private ECGost3410NamedCurves()
+		{
+		}
+
+        internal static readonly IDictionary objIds = Platform.CreateHashtable();
+        internal static readonly IDictionary parameters = Platform.CreateHashtable();
+        internal static readonly IDictionary names = Platform.CreateHashtable();
+
+        static ECGost3410NamedCurves()
+        {
+            BigInteger mod_p = new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639319");
+            BigInteger mod_q = new BigInteger("115792089237316195423570985008687907853073762908499243225378155805079068850323");
+
+            FpCurve curve = new FpCurve(
+                mod_p, // p
+                new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639316"), // a
+                new BigInteger("166")); // b
+
+            ECDomainParameters ecParams = new ECDomainParameters(
+                curve,
+				curve.CreatePoint(
+					BigInteger.One, // x
+					new BigInteger("64033881142927202683649881450433473985931760268884941288852745803908878638612"), // y
+					false),
+                mod_q);
+
+			parameters[CryptoProObjectIdentifiers.GostR3410x2001CryptoProA] = ecParams;
+
+            mod_p = new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639319");
+            mod_q = new BigInteger("115792089237316195423570985008687907853073762908499243225378155805079068850323");
+
+            curve = new FpCurve(
+                mod_p, // p
+                new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639316"),
+                new BigInteger("166"));
+
+            ecParams = new ECDomainParameters(
+                curve,
+				curve.CreatePoint(
+					BigInteger.One, // x
+					new BigInteger("64033881142927202683649881450433473985931760268884941288852745803908878638612"), // y
+					false),
+                mod_q);
+
+            parameters[CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchA] = ecParams;
+
+            mod_p = new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564823193"); //p
+            mod_q = new BigInteger("57896044618658097711785492504343953927102133160255826820068844496087732066703"); //q
+
+            curve = new FpCurve(
+                mod_p, // p
+                new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564823190"), // a
+                new BigInteger("28091019353058090096996979000309560759124368558014865957655842872397301267595")); // b
+
+            ecParams = new ECDomainParameters(
+                curve,
+                curve.CreatePoint(
+					BigInteger.One, // x
+					new BigInteger("28792665814854611296992347458380284135028636778229113005756334730996303888124"), // y
+					false),
+                mod_q); // q
+
+            parameters[CryptoProObjectIdentifiers.GostR3410x2001CryptoProB] = ecParams;
+
+            mod_p = new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502619");
+            mod_q = new BigInteger("70390085352083305199547718019018437840920882647164081035322601458352298396601");
+
+            curve = new FpCurve(
+                mod_p, // p
+                new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502616"),
+                new BigInteger("32858"));
+
+            ecParams = new ECDomainParameters(
+                curve,
+                curve.CreatePoint(
+					BigInteger.Zero, // x
+					new BigInteger("29818893917731240733471273240314769927240550812383695689146495261604565990247"), // y
+					false),
+                mod_q);
+
+            parameters[CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchB] = ecParams;
+
+            mod_p = new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502619"); //p
+            mod_q = new BigInteger("70390085352083305199547718019018437840920882647164081035322601458352298396601"); //q
+            curve = new FpCurve(
+                mod_p, // p
+                new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502616"), // a
+                new BigInteger("32858")); // b
+
+            ecParams = new ECDomainParameters(
+                curve,
+                curve.CreatePoint(
+					BigInteger.Zero, // x
+					new BigInteger("29818893917731240733471273240314769927240550812383695689146495261604565990247"), // y
+					false),
+                mod_q); // q
+
+			parameters[CryptoProObjectIdentifiers.GostR3410x2001CryptoProC] = ecParams;
+
+            objIds["GostR3410-2001-CryptoPro-A"] = CryptoProObjectIdentifiers.GostR3410x2001CryptoProA;
+            objIds["GostR3410-2001-CryptoPro-B"] = CryptoProObjectIdentifiers.GostR3410x2001CryptoProB;
+            objIds["GostR3410-2001-CryptoPro-C"] = CryptoProObjectIdentifiers.GostR3410x2001CryptoProC;
+            objIds["GostR3410-2001-CryptoPro-XchA"] = CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchA;
+            objIds["GostR3410-2001-CryptoPro-XchB"] = CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchB;
+
+            names[CryptoProObjectIdentifiers.GostR3410x2001CryptoProA] = "GostR3410-2001-CryptoPro-A";
+            names[CryptoProObjectIdentifiers.GostR3410x2001CryptoProB] = "GostR3410-2001-CryptoPro-B";
+            names[CryptoProObjectIdentifiers.GostR3410x2001CryptoProC] = "GostR3410-2001-CryptoPro-C";
+            names[CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchA] = "GostR3410-2001-CryptoPro-XchA";
+            names[CryptoProObjectIdentifiers.GostR3410x2001CryptoProXchB] = "GostR3410-2001-CryptoPro-XchB";
+        }
+
+        /**
+        * return the ECDomainParameters object for the given OID, null if it
+        * isn't present.
+        *
+        * @param oid an object identifier representing a named parameters, if present.
+        */
+        public static ECDomainParameters GetByOid(
+            DerObjectIdentifier oid)
+        {
+            return (ECDomainParameters) parameters[oid];
+        }
+
+		/**
+		 * returns an enumeration containing the name strings for curves
+		 * contained in this structure.
+		 */
+		public static IEnumerable Names
+		{
+			get { return new EnumerableProxy(objIds.Keys); }
+		}
+
+        public static ECDomainParameters GetByName(
+            string name)
+        {
+            DerObjectIdentifier oid = (DerObjectIdentifier) objIds[name];
+
+            if (oid != null)
+            {
+                return (ECDomainParameters) parameters[oid];
+            }
+
+            return null;
+        }
+
+        /**
+        * return the named curve name represented by the given object identifier.
+        */
+        public static string GetName(
+            DerObjectIdentifier oid)
+        {
+            return (string) names[oid];
+        }
+
+		public static DerObjectIdentifier GetOid(
+			string name)
+        {
+            return (DerObjectIdentifier) objIds[name];
+        }
+    }
+}
diff --git a/crypto/src/asn1/cryptopro/ECGOST3410ParamSetParameters.cs b/crypto/src/asn1/cryptopro/ECGOST3410ParamSetParameters.cs
new file mode 100644
index 000000000..6f4435d7b
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/ECGOST3410ParamSetParameters.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public class ECGost3410ParamSetParameters
+        : Asn1Encodable
+    {
+        internal readonly DerInteger p, q, a, b, x, y;
+
+        public static ECGost3410ParamSetParameters GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+        public static ECGost3410ParamSetParameters GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is ECGost3410ParamSetParameters)
+            {
+                return (ECGost3410ParamSetParameters) obj;
+            }
+
+            if (obj is Asn1Sequence)
+            {
+                return new ECGost3410ParamSetParameters((Asn1Sequence) obj);
+            }
+
+            throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
+        }
+
+        public ECGost3410ParamSetParameters(
+            BigInteger a,
+            BigInteger b,
+            BigInteger p,
+            BigInteger q,
+            int        x,
+            BigInteger y)
+        {
+            this.a = new DerInteger(a);
+            this.b = new DerInteger(b);
+            this.p = new DerInteger(p);
+            this.q = new DerInteger(q);
+            this.x = new DerInteger(x);
+            this.y = new DerInteger(y);
+        }
+
+        public ECGost3410ParamSetParameters(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 6)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			this.a = DerInteger.GetInstance(seq[0]);
+			this.b = DerInteger.GetInstance(seq[1]);
+			this.p = DerInteger.GetInstance(seq[2]);
+			this.q = DerInteger.GetInstance(seq[3]);
+			this.x = DerInteger.GetInstance(seq[4]);
+			this.y = DerInteger.GetInstance(seq[5]);
+        }
+
+		public BigInteger P
+		{
+			get { return p.PositiveValue; }
+		}
+
+		public BigInteger Q
+		{
+			get { return q.PositiveValue; }
+		}
+
+		public BigInteger A
+		{
+			get { return a.PositiveValue; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(a, b, p, q, x, y);
+        }
+    }
+}
diff --git a/crypto/src/asn1/cryptopro/GOST28147Parameters.cs b/crypto/src/asn1/cryptopro/GOST28147Parameters.cs
new file mode 100644
index 000000000..eb7e0e3f6
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/GOST28147Parameters.cs
@@ -0,0 +1,63 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public class Gost28147Parameters
+        : Asn1Encodable
+    {
+        private readonly Asn1OctetString iv;
+        private readonly DerObjectIdentifier paramSet;
+
+		public static Gost28147Parameters GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+		public static Gost28147Parameters GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is Gost28147Parameters)
+            {
+                return (Gost28147Parameters) obj;
+            }
+
+            if (obj is Asn1Sequence)
+            {
+                return new Gost28147Parameters((Asn1Sequence) obj);
+            }
+
+			throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
+        }
+
+        private Gost28147Parameters(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 2)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			this.iv = Asn1OctetString.GetInstance(seq[0]);
+			this.paramSet = DerObjectIdentifier.GetInstance(seq[1]);
+        }
+
+		/**
+         * <pre>
+         * Gost28147-89-Parameters ::=
+         *               SEQUENCE {
+         *                       iv                   Gost28147-89-IV,
+         *                       encryptionParamSet   OBJECT IDENTIFIER
+         *                }
+         *
+         *   Gost28147-89-IV ::= OCTET STRING (SIZE (8))
+         * </pre>
+         */
+        public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(iv, paramSet);
+        }
+    }
+}
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];
+        }
+    }
+}
diff --git a/crypto/src/asn1/cryptopro/GOST3410ParamSetParameters.cs b/crypto/src/asn1/cryptopro/GOST3410ParamSetParameters.cs
new file mode 100644
index 000000000..f133cdf1b
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/GOST3410ParamSetParameters.cs
@@ -0,0 +1,87 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public class Gost3410ParamSetParameters
+        : Asn1Encodable
+    {
+        private readonly int keySize;
+        private readonly DerInteger	p, q, a;
+
+		public static Gost3410ParamSetParameters GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+		public static Gost3410ParamSetParameters GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is Gost3410ParamSetParameters)
+            {
+                return (Gost3410ParamSetParameters) obj;
+            }
+
+			if (obj is Asn1Sequence)
+            {
+                return new Gost3410ParamSetParameters((Asn1Sequence) obj);
+            }
+
+			throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
+        }
+
+		public Gost3410ParamSetParameters(
+            int			keySize,
+            BigInteger	p,
+            BigInteger	q,
+            BigInteger	a)
+        {
+            this.keySize = keySize;
+            this.p = new DerInteger(p);
+            this.q = new DerInteger(q);
+            this.a = new DerInteger(a);
+        }
+
+		private Gost3410ParamSetParameters(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 4)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			this.keySize = DerInteger.GetInstance(seq[0]).Value.IntValue;
+			this.p = DerInteger.GetInstance(seq[1]);
+            this.q = DerInteger.GetInstance(seq[2]);
+			this.a = DerInteger.GetInstance(seq[3]);
+        }
+
+		public int KeySize
+		{
+			get { return keySize; }
+		}
+
+		public BigInteger P
+		{
+			get { return p.PositiveValue; }
+		}
+
+		public BigInteger Q
+		{
+			get { return q.PositiveValue; }
+		}
+
+		public BigInteger A
+		{
+			get { return a.PositiveValue; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+        {
+			return new DerSequence(new DerInteger(keySize), p, q, a);
+        }
+    }
+}
diff --git a/crypto/src/asn1/cryptopro/GOST3410PublicKeyAlgParameters.cs b/crypto/src/asn1/cryptopro/GOST3410PublicKeyAlgParameters.cs
new file mode 100644
index 000000000..8bc1460af
--- /dev/null
+++ b/crypto/src/asn1/cryptopro/GOST3410PublicKeyAlgParameters.cs
@@ -0,0 +1,99 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.CryptoPro
+{
+    public class Gost3410PublicKeyAlgParameters
+        : Asn1Encodable
+    {
+        private DerObjectIdentifier	publicKeyParamSet;
+        private DerObjectIdentifier	digestParamSet;
+        private DerObjectIdentifier	encryptionParamSet;
+
+		public static Gost3410PublicKeyAlgParameters GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+		public static Gost3410PublicKeyAlgParameters GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is Gost3410PublicKeyAlgParameters)
+            {
+                return (Gost3410PublicKeyAlgParameters) obj;
+            }
+
+			if (obj is Asn1Sequence)
+            {
+                return new Gost3410PublicKeyAlgParameters((Asn1Sequence) obj);
+            }
+
+			throw new ArgumentException("Invalid GOST3410Parameter: " + obj.GetType().Name);
+        }
+
+		public Gost3410PublicKeyAlgParameters(
+            DerObjectIdentifier	publicKeyParamSet,
+            DerObjectIdentifier	digestParamSet)
+			: this (publicKeyParamSet, digestParamSet, null)
+        {
+        }
+
+		public Gost3410PublicKeyAlgParameters(
+            DerObjectIdentifier  publicKeyParamSet,
+            DerObjectIdentifier  digestParamSet,
+            DerObjectIdentifier  encryptionParamSet)
+        {
+			if (publicKeyParamSet == null)
+				throw new ArgumentNullException("publicKeyParamSet");
+			if (digestParamSet == null)
+				throw new ArgumentNullException("digestParamSet");
+
+			this.publicKeyParamSet = publicKeyParamSet;
+            this.digestParamSet = digestParamSet;
+            this.encryptionParamSet = encryptionParamSet;
+        }
+
+		public Gost3410PublicKeyAlgParameters(
+            Asn1Sequence seq)
+        {
+            this.publicKeyParamSet = (DerObjectIdentifier) seq[0];
+            this.digestParamSet = (DerObjectIdentifier) seq[1];
+
+			if (seq.Count > 2)
+            {
+                this.encryptionParamSet = (DerObjectIdentifier) seq[2];
+            }
+        }
+
+		public DerObjectIdentifier PublicKeyParamSet
+		{
+			get { return publicKeyParamSet; }
+		}
+
+		public DerObjectIdentifier DigestParamSet
+		{
+			get { return digestParamSet; }
+		}
+
+		public DerObjectIdentifier EncryptionParamSet
+		{
+			get { return encryptionParamSet; }
+		}
+
+		public override Asn1Object ToAsn1Object()
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector(
+				publicKeyParamSet, digestParamSet);
+
+			if (encryptionParamSet != null)
+            {
+                v.Add(encryptionParamSet);
+            }
+
+			return new DerSequence(v);
+        }
+    }
+}