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Devin Jankowski
2023-06-21 12:46:23 -04:00
commit c70248a520
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iTechSharp/srcbc/asn1/cryptopro/ECGOST3410NamedCurves.cs Normal file
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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.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 Hashtable objIds = new Hashtable();
internal static readonly Hashtable parameters = new Hashtable();
internal static readonly Hashtable names = new Hashtable();
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];
}
}
}