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using System.Collections;
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;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Collections;
namespace Org.BouncyCastle.Security
{
public sealed class GeneratorUtilities
{
private GeneratorUtilities()
{
}
private static readonly IDictionary kgAlgorithms = Platform.CreateHashtable();
private static readonly IDictionary kpgAlgorithms = Platform.CreateHashtable();
private static readonly IDictionary defaultKeySizes = Platform.CreateHashtable();
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",
"TDEA",
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("THREEFISH-256");
AddKgAlgorithm("THREEFISH-512");
AddKgAlgorithm("THREEFISH-1024");
AddKgAlgorithm("TNEPRES");
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("SHA512/224");
AddHMacKeyGenerator("SHA512/256");
AddHMacKeyGenerator("SHA3-224");
AddHMacKeyGenerator("SHA3-256");
AddHMacKeyGenerator("SHA3-384");
AddHMacKeyGenerator("SHA3-512");
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");
AddDefaultKeySizeEntries(64, "DES");
AddDefaultKeySizeEntries(80, "SKIPJACK");
AddDefaultKeySizeEntries(128, "AES128", "BLOWFISH", "CAMELLIA128", "CAST5", "DESEDE",
"HC128", "HMACMD2", "HMACMD4", "HMACMD5", "HMACRIPEMD128", "IDEA", "NOEKEON",
"RC2", "RC4", "RC5", "SALSA20", "SEED", "TEA", "XTEA", "VMPC", "VMPC-KSA3");
AddDefaultKeySizeEntries(160, "HMACRIPEMD160", "HMACSHA1");
AddDefaultKeySizeEntries(192, "AES", "AES192", "CAMELLIA192", "DESEDE3", "HMACTIGER",
"RIJNDAEL", "SERPENT", "TNEPRES");
AddDefaultKeySizeEntries(224, "HMACSHA224", "HMACSHA512/224");
AddDefaultKeySizeEntries(256, "AES256", "CAMELLIA", "CAMELLIA256", "CAST6", "GOST28147",
"HC256", "HMACSHA256", "HMACSHA512/256", "RC5-64", "RC6", "THREEFISH-256", "TWOFISH");
AddDefaultKeySizeEntries(384, "HMACSHA384");
AddDefaultKeySizeEntries(512, "HMACSHA512", "THREEFISH-512");
AddDefaultKeySizeEntries(1024, "THREEFISH-1024");
}
private static void AddDefaultKeySizeEntries(int size, params string[] algorithms)
{
foreach (string algorithm in algorithms)
{
defaultKeySizes.Add(algorithm, size);
}
}
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[Platform.ToUpperInvariant(algorithm)];
}
// TODO Consider making this public
internal static string GetCanonicalKeyPairGeneratorAlgorithm(
string algorithm)
{
return (string)kpgAlgorithms[Platform.ToUpperInvariant(algorithm)];
}
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.");
if (canonicalName == "DES")
return new DesKeyGenerator(defaultKeySize);
if (canonicalName == "DESEDE" || canonicalName == "DESEDE3")
return new DesEdeKeyGenerator(defaultKeySize);
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.");
if (canonicalName == "DH")
return new DHKeyPairGenerator();
if (canonicalName == "DSA")
return new DsaKeyPairGenerator();
// "EC", "ECDH", "ECDHC", "ECDSA", "ECGOST3410", "ECMQV"
if (Platform.StartsWith(canonicalName, "EC"))
return new ECKeyPairGenerator(canonicalName);
if (canonicalName == "ELGAMAL")
return new ElGamalKeyPairGenerator();
if (canonicalName == "GOST3410")
return new Gost3410KeyPairGenerator();
if (canonicalName == "RSA")
return new RsaKeyPairGenerator();
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)
{
if (!defaultKeySizes.Contains(canonicalName))
return -1;
return (int)defaultKeySizes[canonicalName];
}
}
}
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