using System.Collections;
using System.Globalization;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.CryptoPro;
using Org.BouncyCastle.Asn1.Iana;
using Org.BouncyCastle.Asn1.Kisa;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Ntt;
using Org.BouncyCastle.Asn1.Oiw;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Generators;
namespace Org.BouncyCastle.Security{
public sealed class GeneratorUtilities
{
private GeneratorUtilities()
{
}
private static readonly Hashtable kgAlgorithms = new Hashtable();
private static readonly Hashtable kpgAlgorithms = new Hashtable();
static GeneratorUtilities()
{
//
// key generators.
//
AddKgAlgorithm("AES",
"AESWRAP");
AddKgAlgorithm("AES128",
"2.16.840.1.101.3.4.2",
NistObjectIdentifiers.IdAes128Cbc,
NistObjectIdentifiers.IdAes128Cfb,
NistObjectIdentifiers.IdAes128Ecb,
NistObjectIdentifiers.IdAes128Ofb,
NistObjectIdentifiers.IdAes128Wrap);
AddKgAlgorithm("AES192",
"2.16.840.1.101.3.4.22",
NistObjectIdentifiers.IdAes192Cbc,
NistObjectIdentifiers.IdAes192Cfb,
NistObjectIdentifiers.IdAes192Ecb,
NistObjectIdentifiers.IdAes192Ofb,
NistObjectIdentifiers.IdAes192Wrap);
AddKgAlgorithm("AES256",
"2.16.840.1.101.3.4.42",
NistObjectIdentifiers.IdAes256Cbc,
NistObjectIdentifiers.IdAes256Cfb,
NistObjectIdentifiers.IdAes256Ecb,
NistObjectIdentifiers.IdAes256Ofb,
NistObjectIdentifiers.IdAes256Wrap);
AddKgAlgorithm("BLOWFISH",
"1.3.6.1.4.1.3029.1.2");
AddKgAlgorithm("CAMELLIA",
"CAMELLIAWRAP");
AddKgAlgorithm("CAMELLIA128",
NttObjectIdentifiers.IdCamellia128Cbc,
NttObjectIdentifiers.IdCamellia128Wrap);
AddKgAlgorithm("CAMELLIA192",
NttObjectIdentifiers.IdCamellia192Cbc,
NttObjectIdentifiers.IdCamellia192Wrap);
AddKgAlgorithm("CAMELLIA256",
NttObjectIdentifiers.IdCamellia256Cbc,
NttObjectIdentifiers.IdCamellia256Wrap);
AddKgAlgorithm("CAST5",
"1.2.840.113533.7.66.10");
AddKgAlgorithm("CAST6");
AddKgAlgorithm("DES",
OiwObjectIdentifiers.DesCbc,
OiwObjectIdentifiers.DesCfb,
OiwObjectIdentifiers.DesEcb,
OiwObjectIdentifiers.DesOfb);
AddKgAlgorithm("DESEDE",
"DESEDEWRAP",
OiwObjectIdentifiers.DesEde);
AddKgAlgorithm("DESEDE3",
PkcsObjectIdentifiers.DesEde3Cbc,
PkcsObjectIdentifiers.IdAlgCms3DesWrap);
AddKgAlgorithm("GOST28147",
"GOST",
"GOST-28147",
CryptoProObjectIdentifiers.GostR28147Cbc);
AddKgAlgorithm("HC128");
AddKgAlgorithm("HC256");
AddKgAlgorithm("IDEA",
"1.3.6.1.4.1.188.7.1.1.2");
AddKgAlgorithm("NOEKEON");
AddKgAlgorithm("RC2",
PkcsObjectIdentifiers.RC2Cbc,
PkcsObjectIdentifiers.IdAlgCmsRC2Wrap);
AddKgAlgorithm("RC4",
"ARC4",
"1.2.840.113549.3.4");
AddKgAlgorithm("RC5",
"RC5-32");
AddKgAlgorithm("RC5-64");
AddKgAlgorithm("RC6");
AddKgAlgorithm("RIJNDAEL");
AddKgAlgorithm("SALSA20");
AddKgAlgorithm("SEED",
KisaObjectIdentifiers.IdNpkiAppCmsSeedWrap,
KisaObjectIdentifiers.IdSeedCbc);
AddKgAlgorithm("SERPENT");
AddKgAlgorithm("SKIPJACK");
AddKgAlgorithm("TEA");
AddKgAlgorithm("TWOFISH");
AddKgAlgorithm("VMPC");
AddKgAlgorithm("VMPC-KSA3");
AddKgAlgorithm("XTEA");
//
// HMac key generators
//
AddHMacKeyGenerator("MD2");
AddHMacKeyGenerator("MD4");
AddHMacKeyGenerator("MD5",
IanaObjectIdentifiers.HmacMD5);
AddHMacKeyGenerator("SHA1",
PkcsObjectIdentifiers.IdHmacWithSha1,
IanaObjectIdentifiers.HmacSha1);
AddHMacKeyGenerator("SHA224",
PkcsObjectIdentifiers.IdHmacWithSha224);
AddHMacKeyGenerator("SHA256",
PkcsObjectIdentifiers.IdHmacWithSha256);
AddHMacKeyGenerator("SHA384",
PkcsObjectIdentifiers.IdHmacWithSha384);
AddHMacKeyGenerator("SHA512",
PkcsObjectIdentifiers.IdHmacWithSha512);
AddHMacKeyGenerator("RIPEMD128");
AddHMacKeyGenerator("RIPEMD160",
IanaObjectIdentifiers.HmacRipeMD160);
AddHMacKeyGenerator("TIGER",
IanaObjectIdentifiers.HmacTiger);
//
// key pair generators.
//
AddKpgAlgorithm("DH",
"DIFFIEHELLMAN");
AddKpgAlgorithm("DSA");
AddKpgAlgorithm("EC",
// TODO Should this be an alias for ECDH?
X9ObjectIdentifiers.DHSinglePassStdDHSha1KdfScheme);
AddKpgAlgorithm("ECDH",
"ECIES");
AddKpgAlgorithm("ECDHC");
AddKpgAlgorithm("ECMQV",
X9ObjectIdentifiers.MqvSinglePassSha1KdfScheme);
AddKpgAlgorithm("ECDSA");
AddKpgAlgorithm("ECGOST3410",
"ECGOST-3410",
"GOST-3410-2001");
AddKpgAlgorithm("ELGAMAL");
AddKpgAlgorithm("GOST3410",
"GOST-3410",
"GOST-3410-94");
AddKpgAlgorithm("RSA",
"1.2.840.113549.1.1.1");
}
private static void AddKgAlgorithm(
string canonicalName,
params object[] aliases)
{
kgAlgorithms[canonicalName] = canonicalName;
foreach (object alias in aliases)
{
kgAlgorithms[alias.ToString()] = canonicalName;
}
}
private static void AddKpgAlgorithm(
string canonicalName,
params object[] aliases)
{
kpgAlgorithms[canonicalName] = canonicalName;
foreach (object alias in aliases)
{
kpgAlgorithms[alias.ToString()] = canonicalName;
}
}
private static void AddHMacKeyGenerator(
string algorithm,
params object[] aliases)
{
string mainName = "HMAC" + algorithm;
kgAlgorithms[mainName] = mainName;
kgAlgorithms["HMAC-" + algorithm] = mainName;
kgAlgorithms["HMAC/" + algorithm] = mainName;
foreach (object alias in aliases)
{
kgAlgorithms[alias.ToString()] = mainName;
}
}
// TODO Consider making this public
internal static string GetCanonicalKeyGeneratorAlgorithm(
string algorithm)
{
return (string) kgAlgorithms[algorithm.ToUpper(CultureInfo.InvariantCulture)];
}
// TODO Consider making this public
internal static string GetCanonicalKeyPairGeneratorAlgorithm(
string algorithm)
{
return (string) kpgAlgorithms[algorithm.ToUpper(CultureInfo.InvariantCulture)];
}
public static CipherKeyGenerator GetKeyGenerator(
DerObjectIdentifier oid)
{
return GetKeyGenerator(oid.Id);
}
public static CipherKeyGenerator GetKeyGenerator(
string algorithm)
{
string canonicalName = GetCanonicalKeyGeneratorAlgorithm(algorithm);
if (canonicalName == null)
throw new SecurityUtilityException("KeyGenerator " + algorithm + " not recognised.");
int defaultKeySize = FindDefaultKeySize(canonicalName);
if (defaultKeySize == -1)
throw new SecurityUtilityException("KeyGenerator " + algorithm
+ " (" + canonicalName + ") not supported.");
switch (canonicalName)
{
case "DES":
return new DesKeyGenerator(defaultKeySize);
case "DESEDE":
case "DESEDE3":
return new DesEdeKeyGenerator(defaultKeySize);
default:
return new CipherKeyGenerator(defaultKeySize);
}
}
public static IAsymmetricCipherKeyPairGenerator GetKeyPairGenerator(
DerObjectIdentifier oid)
{
return GetKeyPairGenerator(oid.Id);
}
public static IAsymmetricCipherKeyPairGenerator GetKeyPairGenerator(
string algorithm)
{
string canonicalName = GetCanonicalKeyPairGeneratorAlgorithm(algorithm);
if (canonicalName == null)
throw new SecurityUtilityException("KeyPairGenerator " + algorithm + " not recognised.");
switch (canonicalName)
{
case "DH":
return new DHKeyPairGenerator();
case "DSA":
return new DsaKeyPairGenerator();
case "EC":
case "ECDH":
case "ECDHC":
case "ECDSA":
case "ECGOST3410":
case "ECMQV":
return new ECKeyPairGenerator(canonicalName);
case "ELGAMAL":
return new ElGamalKeyPairGenerator();
case "GOST3410":
return new Gost3410KeyPairGenerator();
case "RSA":
return new RsaKeyPairGenerator();
default:
break;
}
throw new SecurityUtilityException("KeyPairGenerator " + algorithm
+ " (" + canonicalName + ") not supported.");
}
internal static int GetDefaultKeySize(
DerObjectIdentifier oid)
{
return GetDefaultKeySize(oid.Id);
}
internal static int GetDefaultKeySize(
string algorithm)
{
string canonicalName = GetCanonicalKeyGeneratorAlgorithm(algorithm);
if (canonicalName == null)
throw new SecurityUtilityException("KeyGenerator " + algorithm + " not recognised.");
int defaultKeySize = FindDefaultKeySize(canonicalName);
if (defaultKeySize == -1)
throw new SecurityUtilityException("KeyGenerator " + algorithm
+ " (" + canonicalName + ") not supported.");
return defaultKeySize;
}
private static int FindDefaultKeySize(
string canonicalName)
{
switch (canonicalName)
{
case "DES":
return 64;
case "SKIPJACK":
return 80;
case "AES128":
case "BLOWFISH":
case "CAMELLIA128":
case "CAST5":
case "DESEDE":
case "HC128":
case "HMACMD2":
case "HMACMD4":
case "HMACMD5":
case "HMACRIPEMD128":
case "IDEA":
case "NOEKEON":
case "RC2":
case "RC4":
case "RC5":
case "SALSA20":
case "SEED":
case "TEA":
case "XTEA":
case "VMPC":
case "VMPC-KSA3":
return 128;
case "HMACRIPEMD160":
case "HMACSHA1":
return 160;
case "AES":
case "AES192":
case "CAMELLIA192":
case "DESEDE3":
case "HMACTIGER":
case "RIJNDAEL":
case "SERPENT":
return 192;
case "HMACSHA224":
return 224;
case "AES256":
case "CAMELLIA":
case "CAMELLIA256":
case "CAST6":
case "GOST28147":
case "HC256":
case "HMACSHA256":
case "RC5-64":
case "RC6":
case "TWOFISH":
return 256;
case "HMACSHA384":
return 384;
case "HMACSHA512":
return 512;
default:
return -1;
}
}
}
}
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