CurveData(final X9ECParameters params) {
ECCurve curve = params.getCurve();
this.a = curve.getA().toBigInteger().toString(16);
this.b = curve.getB().toBigInteger().toString(16);
this.x = params.getG().getAffineXCoord().toBigInteger().toString(16);
this.y = params.getG().getAffineYCoord().toBigInteger().toString(16);
this.n = params.getN().toString(16);
this.h = params.getH().intValue();
if (curve instanceof ECCurve.Fp) {
this.type = P;
ECCurve.Fp c = (ECCurve.Fp) curve;
this.sfield = c.getQ().toString(16);
} else // if (curve instanceof ECCurve.F2m)
{
this.type = B;
ECCurve.F2m c = (ECCurve.F2m) curve;
int m = c.getM();
int[] ks = new int[] {c.getK1(), c.getK2(), c.getK3()};
BigInteger rp = BigInteger.ONE;
rp = rp.setBit(m);
for (int j = 0; j < ks.length; j++) {
if (ks[j] > 0) {
rp = rp.setBit(ks[j]);
}
}
this.sfield = rp.toString(16);
}
}
private java.security.spec.ECPoint getPublicPoint(ECDSAPublicKey key) {
if (!key.hasParameters()) {
throw new IllegalArgumentException("Public key does not contains EC Params");
}
BigInteger p = key.getPrimeModulusP();
ECCurve.Fp curve = new ECCurve.Fp(p, key.getFirstCoefA(), key.getSecondCoefB());
ECPoint.Fp pubY = (ECPoint.Fp) curve.decodePoint(key.getPublicPointY());
return new java.security.spec.ECPoint(
pubY.getAffineXCoord().toBigInteger(), pubY.getAffineYCoord().toBigInteger());
}
private ECParameterSpec getParams(ECDSAPublicKey key) {
if (!key.hasParameters()) {
throw new IllegalArgumentException("Public key does not contains EC Params");
}
BigInteger p = key.getPrimeModulusP();
ECCurve.Fp curve = new ECCurve.Fp(p, key.getFirstCoefA(), key.getSecondCoefB());
ECPoint G = curve.decodePoint(key.getBasePointG());
BigInteger order = key.getOrderOfBasePointR();
BigInteger coFactor = key.getCofactorF();
EllipticCurve jcaCurve = convertCurve(curve);
return new ECParameterSpec(
jcaCurve,
new java.security.spec.ECPoint(
G.getAffineXCoord().toBigInteger(), G.getAffineYCoord().toBigInteger()),
order,
coFactor.intValue());
}
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
mod_q,
ECConstants.ONE);
ECDomainParameters ecParams =
new ECDomainParameters(
curve,
curve.createPoint(
new BigInteger("1"), // x
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"),
mod_q,
ECConstants.ONE);
ecParams =
new ECDomainParameters(
curve,
curve.createPoint(
new BigInteger("1"), // x
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
mod_q,
ECConstants.ONE);
ecParams =
new ECDomainParameters(
curve,
curve.createPoint(
new BigInteger("1"), // x
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"),
mod_q,
ECConstants.ONE);
ecParams =
new ECDomainParameters(
curve,
curve.createPoint(
new BigInteger("0"),
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
mod_q,
ECConstants.ONE);
ecParams =
new ECDomainParameters(
curve,
curve.createPoint(
new BigInteger("0"), // x
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");
}