package org.bouncycastle.asn1.cryptopro;
import java.math.BigInteger;
import java.util.Enumeration;
import java.util.Hashtable;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECFieldElement;
import org.bouncycastle.math.ec.ECPoint;
/**
* table of the available named parameters for GOST 3410-2001.
*/
public class ECGOST3410NamedCurves
{
static final Hashtable objIds = new Hashtable();
static final Hashtable params = new Hashtable();
static final Hashtable names = new Hashtable();
static
{
BigInteger mod_p = new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639319");
BigInteger mod_q = new BigInteger("115792089237316195423570985008687907853073762908499243225378155805079068850323");
ECCurve.Fp curve = new ECCurve.Fp(
mod_p, // p
new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639316"), // a
new BigInteger("166")); // b
ECDomainParameters ecParams = new ECDomainParameters(
curve,
new ECPoint.Fp(curve,
new ECFieldElement.Fp(curve.getQ(),new BigInteger("1")), // x
new ECFieldElement.Fp(curve.getQ(),new BigInteger("64033881142927202683649881450433473985931760268884941288852745803908878638612"))), // y
mod_q);
params.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_A, ecParams);
mod_p = new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639319");
mod_q = new BigInteger("115792089237316195423570985008687907853073762908499243225378155805079068850323");
curve = new ECCurve.Fp(
mod_p, // p
new BigInteger("115792089237316195423570985008687907853269984665640564039457584007913129639316"),
new BigInteger("166"));
ecParams = new ECDomainParameters(
curve,
new ECPoint.Fp(curve,
new ECFieldElement.Fp(curve.getQ(),new BigInteger("1")), // x
new ECFieldElement.Fp(curve.getQ(),new BigInteger("64033881142927202683649881450433473985931760268884941288852745803908878638612"))), // y
mod_q);
params.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchA, ecParams);
mod_p = new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564823193"); //p
mod_q = new BigInteger("57896044618658097711785492504343953927102133160255826820068844496087732066703"); //q
curve = new ECCurve.Fp(
mod_p, // p
new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564823190"), // a
new BigInteger("28091019353058090096996979000309560759124368558014865957655842872397301267595")); // b
ecParams = new ECDomainParameters(
curve,
new ECPoint.Fp(curve,
new ECFieldElement.Fp(mod_p,new BigInteger("1")), // x
new ECFieldElement.Fp(mod_p,new BigInteger("28792665814854611296992347458380284135028636778229113005756334730996303888124"))), // y
mod_q); // q
params.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_B, ecParams);
mod_p = new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502619");
mod_q = new BigInteger("70390085352083305199547718019018437840920882647164081035322601458352298396601");
curve = new ECCurve.Fp(
mod_p, // p
new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502616"),
new BigInteger("32858"));
ecParams = new ECDomainParameters(
curve,
new ECPoint.Fp(curve,
new ECFieldElement.Fp(mod_p,new BigInteger("0")),
new ECFieldElement.Fp(mod_p,new BigInteger("29818893917731240733471273240314769927240550812383695689146495261604565990247"))),
mod_q);
params.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchB, ecParams);
mod_p = new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502619"); //p
mod_q = new BigInteger("70390085352083305199547718019018437840920882647164081035322601458352298396601"); //q
curve = new ECCurve.Fp(
mod_p, // p
new BigInteger("70390085352083305199547718019018437841079516630045180471284346843705633502616"), // a
new BigInteger("32858")); // b
ecParams = new ECDomainParameters(
curve,
new ECPoint.Fp(curve,
new ECFieldElement.Fp(mod_p,new BigInteger("0")), // x
new ECFieldElement.Fp(mod_p,new BigInteger("29818893917731240733471273240314769927240550812383695689146495261604565990247"))), // y
mod_q); // q
params.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_C, ecParams);
objIds.put("GostR3410-2001-CryptoPro-A", CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_A);
objIds.put("GostR3410-2001-CryptoPro-B", CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_B);
objIds.put("GostR3410-2001-CryptoPro-C", CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_C);
objIds.put("GostR3410-2001-CryptoPro-XchA", CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchA);
objIds.put("GostR3410-2001-CryptoPro-XchB", CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchB);
names.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_A, "GostR3410-2001-CryptoPro-A");
names.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_B, "GostR3410-2001-CryptoPro-B");
names.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_C, "GostR3410-2001-CryptoPro-C");
names.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchA, "GostR3410-2001-CryptoPro-XchA");
names.put(CryptoProObjectIdentifiers.gostR3410_2001_CryptoPro_XchB, "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(
ASN1ObjectIdentifier oid)
{
return (ECDomainParameters)params.get(oid);
}
/**
* returns an enumeration containing the name strings for parameters
* contained in this structure.
*/
public static Enumeration getNames()
{
return objIds.keys();
}
public static ECDomainParameters getByName(
String name)
{
ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)objIds.get(name);
if (oid != null)
{
return (ECDomainParameters)params.get(oid);
}
return null;
}
/**
* return the named curve name represented by the given object identifier.
*/
public static String getName(
ASN1ObjectIdentifier oid)
{
return (String)names.get(oid);
}
public static ASN1ObjectIdentifier getOID(String name)
{
return (ASN1ObjectIdentifier)objIds.get(name);
}
}