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106 lines
3.9 KiB
106 lines
3.9 KiB
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR) |
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#pragma warning disable |
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using System; |
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using System.Collections; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Sec; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.X9; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Collections; |
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Nist |
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{ |
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/** |
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* Utility class for fetching curves using their NIST names as published in FIPS-PUB 186-3 |
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*/ |
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public sealed class NistNamedCurves |
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{ |
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private NistNamedCurves() |
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{ |
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} |
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private static readonly IDictionary objIds = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.CreateHashtable(); |
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private static readonly IDictionary names = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.CreateHashtable(); |
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private static void DefineCurveAlias( |
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string name, |
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DerObjectIdentifier oid) |
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{ |
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objIds.Add(BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.ToUpperInvariant(name), oid); |
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names.Add(oid, name); |
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} |
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static NistNamedCurves() |
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{ |
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DefineCurveAlias("B-163", SecObjectIdentifiers.SecT163r2); |
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DefineCurveAlias("B-233", SecObjectIdentifiers.SecT233r1); |
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DefineCurveAlias("B-283", SecObjectIdentifiers.SecT283r1); |
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DefineCurveAlias("B-409", SecObjectIdentifiers.SecT409r1); |
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DefineCurveAlias("B-571", SecObjectIdentifiers.SecT571r1); |
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DefineCurveAlias("K-163", SecObjectIdentifiers.SecT163k1); |
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DefineCurveAlias("K-233", SecObjectIdentifiers.SecT233k1); |
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DefineCurveAlias("K-283", SecObjectIdentifiers.SecT283k1); |
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DefineCurveAlias("K-409", SecObjectIdentifiers.SecT409k1); |
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DefineCurveAlias("K-571", SecObjectIdentifiers.SecT571k1); |
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DefineCurveAlias("P-192", SecObjectIdentifiers.SecP192r1); |
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DefineCurveAlias("P-224", SecObjectIdentifiers.SecP224r1); |
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DefineCurveAlias("P-256", SecObjectIdentifiers.SecP256r1); |
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DefineCurveAlias("P-384", SecObjectIdentifiers.SecP384r1); |
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DefineCurveAlias("P-521", SecObjectIdentifiers.SecP521r1); |
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} |
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public static X9ECParameters GetByName( |
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string name) |
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{ |
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DerObjectIdentifier oid = GetOid(name); |
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return oid == null ? null : GetByOid(oid); |
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} |
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/** |
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* return the X9ECParameters object for the named curve represented by |
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* the passed in object identifier. Null if the curve isn't present. |
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* |
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* @param oid an object identifier representing a named curve, if present. |
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*/ |
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public static X9ECParameters GetByOid( |
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DerObjectIdentifier oid) |
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{ |
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return SecNamedCurves.GetByOid(oid); |
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} |
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/** |
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* return the object identifier signified by the passed in name. Null |
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* if there is no object identifier associated with name. |
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* |
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* @return the object identifier associated with name, if present. |
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*/ |
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public static DerObjectIdentifier GetOid( |
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string name) |
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{ |
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return (DerObjectIdentifier) objIds[BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.ToUpperInvariant(name)]; |
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} |
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/** |
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* return the named curve name represented by the given object identifier. |
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*/ |
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public static string GetName( |
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DerObjectIdentifier oid) |
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{ |
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return (string) names[oid]; |
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} |
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/** |
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* returns an enumeration containing the name strings for curves |
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* contained in this structure. |
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*/ |
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public static IEnumerable Names |
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{ |
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get { return new EnumerableProxy(names.Values); } |
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} |
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} |
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} |
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#pragma warning restore |
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#endif
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