diff options
Diffstat (limited to 'crypto/src/asn1/x9/ECNamedCurveTable.cs')
| -rw-r--r-- | crypto/src/asn1/x9/ECNamedCurveTable.cs | 194 |
1 files changed, 94 insertions, 100 deletions
diff --git a/crypto/src/asn1/x9/ECNamedCurveTable.cs b/crypto/src/asn1/x9/ECNamedCurveTable.cs index f0d70272b..9243c341e 100644 --- a/crypto/src/asn1/x9/ECNamedCurveTable.cs +++ b/crypto/src/asn1/x9/ECNamedCurveTable.cs @@ -1,5 +1,5 @@ using System; -using System.Collections; +using System.Collections.Generic; using Org.BouncyCastle.Asn1.Anssi; using Org.BouncyCastle.Asn1.CryptoPro; @@ -7,23 +7,14 @@ using Org.BouncyCastle.Asn1.GM; using Org.BouncyCastle.Asn1.Nist; using Org.BouncyCastle.Asn1.Sec; using Org.BouncyCastle.Asn1.TeleTrust; -using Org.BouncyCastle.Utilities; -using Org.BouncyCastle.Utilities.Collections; namespace Org.BouncyCastle.Asn1.X9 { - /** - * A general class that reads all X9.62 style EC curve tables. - */ + /// <summary>A unified elliptic curve registry of the various standard-specific registries.</summary> public class ECNamedCurveTable { - /** - * return a X9ECParameters object representing the passed in named - * curve. The routine returns null if the curve is not present. - * - * @param name the name of the curve requested - * @return an X9ECParameters object or null if the curve is not available. - */ + /// <summary>Look up the <see cref="X9ECParameters"/> for the curve with the given name.</summary> + /// <param name="name">The name of the curve.</param> public static X9ECParameters GetByName(string name) { X9ECParameters ecP = X962NamedCurves.GetByName(name); @@ -45,7 +36,7 @@ namespace Org.BouncyCastle.Asn1.X9 } if (ecP == null) { - ecP = ECGost3410NamedCurves.GetByNameX9(name); + ecP = ECGost3410NamedCurves.GetByName(name); } if (ecP == null) { @@ -54,6 +45,12 @@ namespace Org.BouncyCastle.Asn1.X9 return ecP; } + /// <summary>Look up an <see cref="X9ECParametersHolder"/> for the curve with the given name.</summary> + /// <remarks> + /// Allows accessing the <see cref="ECCurve">curve</see> without necessarily triggering the creation of the + /// full <see cref="X9ECParameters"/>. + /// </remarks> + /// <param name="name">The name of the curve.</param> public static X9ECParametersHolder GetByNameLazy(string name) { X9ECParametersHolder holder = X962NamedCurves.GetByNameLazy(name); @@ -84,6 +81,76 @@ namespace Org.BouncyCastle.Asn1.X9 return holder; } + /// <summary>Look up the <see cref="X9ECParameters"/> for the curve with the given + /// <see cref="DerObjectIdentifier">OID</see>.</summary> + /// <param name="oid">The <see cref="DerObjectIdentifier">OID</see> for the curve.</param> + public static X9ECParameters GetByOid(DerObjectIdentifier oid) + { + X9ECParameters ecP = X962NamedCurves.GetByOid(oid); + if (ecP == null) + { + ecP = SecNamedCurves.GetByOid(oid); + } + + // NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup + + if (ecP == null) + { + ecP = TeleTrusTNamedCurves.GetByOid(oid); + } + if (ecP == null) + { + ecP = AnssiNamedCurves.GetByOid(oid); + } + if (ecP == null) + { + ecP = ECGost3410NamedCurves.GetByOid(oid); + } + if (ecP == null) + { + ecP = GMNamedCurves.GetByOid(oid); + } + return ecP; + } + + /// <summary>Look up an <see cref="X9ECParametersHolder"/> for the curve with the given + /// <see cref="DerObjectIdentifier">OID</see>.</summary> + /// <remarks> + /// Allows accessing the <see cref="ECCurve">curve</see> without necessarily triggering the creation of the + /// full <see cref="X9ECParameters"/>. + /// </remarks> + /// <param name="oid">The <see cref="DerObjectIdentifier">OID</see> for the curve.</param> + public static X9ECParametersHolder GetByOidLazy(DerObjectIdentifier oid) + { + X9ECParametersHolder holder = X962NamedCurves.GetByOidLazy(oid); + if (null == holder) + { + holder = SecNamedCurves.GetByOidLazy(oid); + } + + // NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup + + if (null == holder) + { + holder = TeleTrusTNamedCurves.GetByOidLazy(oid); + } + if (null == holder) + { + holder = AnssiNamedCurves.GetByOidLazy(oid); + } + if (null == holder) + { + holder = ECGost3410NamedCurves.GetByOidLazy(oid); + } + if (null == holder) + { + holder = GMNamedCurves.GetByOidLazy(oid); + } + return holder; + } + + /// <summary>Look up the name of the curve with the given <see cref="DerObjectIdentifier">OID</see>.</summary> + /// <param name="oid">The <see cref="DerObjectIdentifier">OID</see> for the curve.</param> public static string GetName(DerObjectIdentifier oid) { string name = X962NamedCurves.GetName(oid); @@ -114,12 +181,8 @@ namespace Org.BouncyCastle.Asn1.X9 return name; } - /** - * return the object identifier signified by the passed in name. Null - * if there is no object identifier associated with name. - * - * @return the object identifier associated with name, if present. - */ + /// <summary>Look up the <see cref="DerObjectIdentifier">OID</see> of the curve with the given name.</summary> + /// <param name="name">The name of the curve.</param> public static DerObjectIdentifier GetOid(string name) { DerObjectIdentifier oid = X962NamedCurves.GetOid(name); @@ -150,89 +213,20 @@ namespace Org.BouncyCastle.Asn1.X9 return oid; } - /** - * return a X9ECParameters object representing the passed in named - * curve. - * - * @param oid the object id of the curve requested - * @return an X9ECParameters object or null if the curve is not available. - */ - public static X9ECParameters GetByOid(DerObjectIdentifier oid) - { - X9ECParameters ecP = X962NamedCurves.GetByOid(oid); - if (ecP == null) - { - ecP = SecNamedCurves.GetByOid(oid); - } - - // NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup - - if (ecP == null) - { - ecP = TeleTrusTNamedCurves.GetByOid(oid); - } - if (ecP == null) - { - ecP = AnssiNamedCurves.GetByOid(oid); - } - if (ecP == null) - { - ecP = ECGost3410NamedCurves.GetByOidX9(oid); - } - if (ecP == null) - { - ecP = GMNamedCurves.GetByOid(oid); - } - return ecP; - } - - public static X9ECParametersHolder GetByOidLazy(DerObjectIdentifier oid) - { - X9ECParametersHolder holder = X962NamedCurves.GetByOidLazy(oid); - if (null == holder) - { - holder = SecNamedCurves.GetByOidLazy(oid); - } - - // NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup - - if (null == holder) - { - holder = TeleTrusTNamedCurves.GetByOidLazy(oid); - } - if (null == holder) - { - holder = AnssiNamedCurves.GetByOidLazy(oid); - } - if (null == holder) - { - holder = ECGost3410NamedCurves.GetByOidLazy(oid); - } - if (null == holder) - { - holder = GMNamedCurves.GetByOidLazy(oid); - } - return holder; - } - - /** - * return an enumeration of the names of the available curves. - * - * @return an enumeration of the names of the available curves. - */ - public static IEnumerable Names + /// <summary>Enumerate the available curve names in all the registries.</summary> + public static IEnumerable<string> Names { get { - IList v = Platform.CreateArrayList(); - CollectionUtilities.AddRange(v, X962NamedCurves.Names); - CollectionUtilities.AddRange(v, SecNamedCurves.Names); - CollectionUtilities.AddRange(v, NistNamedCurves.Names); - CollectionUtilities.AddRange(v, TeleTrusTNamedCurves.Names); - CollectionUtilities.AddRange(v, AnssiNamedCurves.Names); - CollectionUtilities.AddRange(v, ECGost3410NamedCurves.Names); - CollectionUtilities.AddRange(v, GMNamedCurves.Names); - return v; + var result = new List<string>(); + result.AddRange(X962NamedCurves.Names); + result.AddRange(SecNamedCurves.Names); + result.AddRange(NistNamedCurves.Names); + result.AddRange(TeleTrusTNamedCurves.Names); + result.AddRange(AnssiNamedCurves.Names); + result.AddRange(ECGost3410NamedCurves.Names); + result.AddRange(GMNamedCurves.Names); + return result; } } } |