MacUtilities
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Iana;
using Org.BouncyCastle.Asn1.Misc;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Oiw;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.Rosstandart;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Macs;
using Org.BouncyCastle.Crypto.Paddings;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Collections;
using System;
using System.Collections.Generic;
namespace Org.BouncyCastle.Security
{
public static class MacUtilities
{
private static readonly Dictionary<string, string> AlgorithmMap;
private static readonly Dictionary<DerObjectIdentifier, string> AlgorithmOidMap;
static MacUtilities()
{
AlgorithmMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
AlgorithmOidMap = new Dictionary<DerObjectIdentifier, string>();
AlgorithmOidMap[IanaObjectIdentifiers.HmacMD5] = "HMAC-MD5";
AlgorithmOidMap[IanaObjectIdentifiers.HmacRipeMD160] = "HMAC-RIPEMD160";
AlgorithmOidMap[IanaObjectIdentifiers.HmacSha1] = "HMAC-SHA1";
AlgorithmOidMap[IanaObjectIdentifiers.HmacTiger] = "HMAC-TIGER";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha1] = "HMAC-SHA1";
AlgorithmOidMap[MiscObjectIdentifiers.HMAC_SHA1] = "HMAC-SHA1";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha224] = "HMAC-SHA224";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha256] = "HMAC-SHA256";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha384] = "HMAC-SHA384";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha512] = "HMAC-SHA512";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha512_224] = "HMAC-SHA512-224";
AlgorithmOidMap[PkcsObjectIdentifiers.IdHmacWithSha512_256] = "HMAC-SHA512-256";
AlgorithmOidMap[NistObjectIdentifiers.IdHMacWithSha3_224] = "HMAC-SHA3-224";
AlgorithmOidMap[NistObjectIdentifiers.IdHMacWithSha3_256] = "HMAC-SHA3-256";
AlgorithmOidMap[NistObjectIdentifiers.IdHMacWithSha3_384] = "HMAC-SHA3-384";
AlgorithmOidMap[NistObjectIdentifiers.IdHMacWithSha3_512] = "HMAC-SHA3-512";
AlgorithmOidMap[RosstandartObjectIdentifiers.id_tc26_hmac_gost_3411_12_256] = "HMAC-GOST3411-2012-256";
AlgorithmOidMap[RosstandartObjectIdentifiers.id_tc26_hmac_gost_3411_12_512] = "HMAC-GOST3411-2012-512";
AlgorithmMap["DES"] = "DESMAC";
AlgorithmMap["DES/CFB8"] = "DESMAC/CFB8";
AlgorithmMap["DES64"] = "DESMAC64";
AlgorithmMap["DESEDE"] = "DESEDEMAC";
AlgorithmOidMap[PkcsObjectIdentifiers.DesEde3Cbc] = "DESEDEMAC";
AlgorithmMap["DESEDE/CFB8"] = "DESEDEMAC/CFB8";
AlgorithmMap["DESISO9797MAC"] = "DESWITHISO9797";
AlgorithmMap["DESEDE64"] = "DESEDEMAC64";
AlgorithmMap["DESEDE64WITHISO7816-4PADDING"] = "DESEDEMAC64WITHISO7816-4PADDING";
AlgorithmMap["DESEDEISO9797ALG1MACWITHISO7816-4PADDING"] = "DESEDEMAC64WITHISO7816-4PADDING";
AlgorithmMap["DESEDEISO9797ALG1WITHISO7816-4PADDING"] = "DESEDEMAC64WITHISO7816-4PADDING";
AlgorithmMap["ISO9797ALG3"] = "ISO9797ALG3MAC";
AlgorithmMap["ISO9797ALG3MACWITHISO7816-4PADDING"] = "ISO9797ALG3WITHISO7816-4PADDING";
AlgorithmMap["SKIPJACK"] = "SKIPJACKMAC";
AlgorithmMap["SKIPJACK/CFB8"] = "SKIPJACKMAC/CFB8";
AlgorithmMap["IDEA"] = "IDEAMAC";
AlgorithmMap["IDEA/CFB8"] = "IDEAMAC/CFB8";
AlgorithmMap["RC2"] = "RC2MAC";
AlgorithmMap["RC2/CFB8"] = "RC2MAC/CFB8";
AlgorithmMap["RC5"] = "RC5MAC";
AlgorithmMap["RC5/CFB8"] = "RC5MAC/CFB8";
AlgorithmMap["GOST28147"] = "GOST28147MAC";
AlgorithmMap["VMPC"] = "VMPCMAC";
AlgorithmMap["VMPC-MAC"] = "VMPCMAC";
AlgorithmMap["SIPHASH"] = "SIPHASH-2-4";
AlgorithmMap["PBEWITHHMACSHA"] = "PBEWITHHMACSHA1";
AlgorithmOidMap[OiwObjectIdentifiers.IdSha1] = "PBEWITHHMACSHA1";
}
public static byte[] CalculateMac(string algorithm, ICipherParameters cp, byte[] input)
{
IMac mac = GetMac(algorithm);
mac.Init(cp);
mac.BlockUpdate(input, 0, input.Length);
return DoFinal(mac);
}
public static byte[] DoFinal(IMac mac)
{
byte[] array = new byte[mac.GetMacSize()];
mac.DoFinal(array, 0);
return array;
}
public static byte[] DoFinal(IMac mac, byte[] input)
{
mac.BlockUpdate(input, 0, input.Length);
return DoFinal(mac);
}
public static string GetAlgorithmName(DerObjectIdentifier oid)
{
return CollectionUtilities.GetValueOrNull(AlgorithmOidMap, oid);
}
public static IMac GetMac(DerObjectIdentifier id)
{
if (id == null)
throw new ArgumentNullException("id");
if (AlgorithmOidMap.TryGetValue(id, out string value)) {
IMac macForMechanism = GetMacForMechanism(value);
if (macForMechanism != null)
return macForMechanism;
}
throw new SecurityUtilityException("Mac OID not recognised.");
}
public static IMac GetMac(string algorithm)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
IMac macForMechanism = GetMacForMechanism(GetMechanism(algorithm) ?? algorithm.ToUpperInvariant());
if (macForMechanism != null)
return macForMechanism;
throw new SecurityUtilityException("Mac " + algorithm + " not recognised.");
}
private static IMac GetMacForMechanism(string mechanism)
{
if (Platform.StartsWith(mechanism, "PBEWITH"))
mechanism = mechanism.Substring("PBEWITH".Length);
if (Platform.StartsWith(mechanism, "HMAC")) {
string algorithm = (!Platform.StartsWith(mechanism, "HMAC-") && !Platform.StartsWith(mechanism, "HMAC/")) ? mechanism.Substring(4) : mechanism.Substring(5);
return new HMac(DigestUtilities.GetDigest(algorithm));
}
if (mechanism == "AESCMAC")
return new CMac(AesUtilities.CreateEngine());
if (mechanism == "DESMAC")
return new CbcBlockCipherMac(new DesEngine());
if (mechanism == "DESMAC/CFB8")
return new CfbBlockCipherMac(new DesEngine());
if (mechanism == "DESMAC64")
return new CbcBlockCipherMac(new DesEngine(), 64);
if (mechanism == "DESEDECMAC")
return new CMac(new DesEdeEngine());
if (mechanism == "DESEDEMAC")
return new CbcBlockCipherMac(new DesEdeEngine());
if (mechanism == "DESEDEMAC/CFB8")
return new CfbBlockCipherMac(new DesEdeEngine());
if (mechanism == "DESEDEMAC64")
return new CbcBlockCipherMac(new DesEdeEngine(), 64);
if (mechanism == "DESEDEMAC64WITHISO7816-4PADDING")
return new CbcBlockCipherMac(new DesEdeEngine(), 64, new ISO7816d4Padding());
if (mechanism == "DESWITHISO9797" || mechanism == "ISO9797ALG3MAC")
return new ISO9797Alg3Mac(new DesEngine());
if (mechanism == "ISO9797ALG3WITHISO7816-4PADDING")
return new ISO9797Alg3Mac(new DesEngine(), new ISO7816d4Padding());
if (mechanism == "SKIPJACKMAC")
return new CbcBlockCipherMac(new SkipjackEngine());
if (mechanism == "SKIPJACKMAC/CFB8")
return new CfbBlockCipherMac(new SkipjackEngine());
if (mechanism == "IDEAMAC")
return new CbcBlockCipherMac(new IdeaEngine());
if (mechanism == "IDEAMAC/CFB8")
return new CfbBlockCipherMac(new IdeaEngine());
if (mechanism == "RC2MAC")
return new CbcBlockCipherMac(new RC2Engine());
if (mechanism == "RC2MAC/CFB8")
return new CfbBlockCipherMac(new RC2Engine());
if (mechanism == "RC5MAC")
return new CbcBlockCipherMac(new RC532Engine());
if (mechanism == "RC5MAC/CFB8")
return new CfbBlockCipherMac(new RC532Engine());
if (mechanism == "GOST28147MAC")
return new Gost28147Mac();
if (mechanism == "VMPCMAC")
return new VmpcMac();
if (mechanism == "SIPHASH-2-4")
return new SipHash();
return null;
}
private static string GetMechanism(string algorithm)
{
if (AlgorithmMap.TryGetValue(algorithm, out string value))
return value;
if (DerObjectIdentifier.TryFromID(algorithm, out DerObjectIdentifier oid) && AlgorithmOidMap.TryGetValue(oid, out string value2))
return value2;
return null;
}
}
}