diff options
Diffstat (limited to 'crypto/src/asn1/cryptopro/ECGOST3410NamedCurves.cs')
| -rw-r--r-- | crypto/src/asn1/cryptopro/ECGOST3410NamedCurves.cs | 179 |
1 files changed, 179 insertions, 0 deletions
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]; + } + } +} |