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using System;
using System.Collections;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.BC;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Oiw;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.TeleTrust;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Macs;
using Org.BouncyCastle.Crypto.Modes;
using Org.BouncyCastle.Crypto.Paddings;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Security
{
/// <summary>
///
/// </summary>
public sealed class PbeUtilities
{
private PbeUtilities()
{
}
const string Pkcs5S1 = "Pkcs5S1";
const string Pkcs5S2 = "Pkcs5S2";
const string Pkcs12 = "Pkcs12";
const string OpenSsl = "OpenSsl";
private static readonly IDictionary algorithms = Platform.CreateHashtable();
private static readonly IDictionary algorithmType = Platform.CreateHashtable();
private static readonly IDictionary oids = Platform.CreateHashtable();
static PbeUtilities()
{
algorithms["PKCS5SCHEME1"] = "Pkcs5scheme1";
algorithms["PKCS5SCHEME2"] = "Pkcs5scheme2";
algorithms[PkcsObjectIdentifiers.IdPbeS2.Id] = "Pkcs5scheme2";
// algorithms[PkcsObjectIdentifiers.IdPbkdf2.Id] = "Pkcs5scheme2";
// FIXME Add support for these? (see Pkcs8Generator)
// algorithms[PkcsObjectIdentifiers.DesEde3Cbc.Id] = "Pkcs5scheme2";
// algorithms[NistObjectIdentifiers.IdAes128Cbc.Id] = "Pkcs5scheme2";
// algorithms[NistObjectIdentifiers.IdAes192Cbc.Id] = "Pkcs5scheme2";
// algorithms[NistObjectIdentifiers.IdAes256Cbc.Id] = "Pkcs5scheme2";
algorithms["PBEWITHMD2ANDDES-CBC"] = "PBEwithMD2andDES-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithMD2AndDesCbc.Id] = "PBEwithMD2andDES-CBC";
algorithms["PBEWITHMD2ANDRC2-CBC"] = "PBEwithMD2andRC2-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithMD2AndRC2Cbc.Id] = "PBEwithMD2andRC2-CBC";
algorithms["PBEWITHMD5ANDDES-CBC"] = "PBEwithMD5andDES-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithMD5AndDesCbc.Id] = "PBEwithMD5andDES-CBC";
algorithms["PBEWITHMD5ANDRC2-CBC"] = "PBEwithMD5andRC2-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithMD5AndRC2Cbc.Id] = "PBEwithMD5andRC2-CBC";
algorithms["PBEWITHSHA1ANDDES"] = "PBEwithSHA-1andDES-CBC";
algorithms["PBEWITHSHA-1ANDDES"] = "PBEwithSHA-1andDES-CBC";
algorithms["PBEWITHSHA1ANDDES-CBC"] = "PBEwithSHA-1andDES-CBC";
algorithms["PBEWITHSHA-1ANDDES-CBC"] = "PBEwithSHA-1andDES-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithSha1AndDesCbc.Id] = "PBEwithSHA-1andDES-CBC";
algorithms["PBEWITHSHA1ANDRC2"] = "PBEwithSHA-1andRC2-CBC";
algorithms["PBEWITHSHA-1ANDRC2"] = "PBEwithSHA-1andRC2-CBC";
algorithms["PBEWITHSHA1ANDRC2-CBC"] = "PBEwithSHA-1andRC2-CBC";
algorithms["PBEWITHSHA-1ANDRC2-CBC"] = "PBEwithSHA-1andRC2-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithSha1AndRC2Cbc.Id] = "PBEwithSHA-1andRC2-CBC";
algorithms["PKCS12"] = "Pkcs12";
algorithms[BCObjectIdentifiers.bc_pbe_sha1_pkcs12_aes128_cbc.Id] = "PBEwithSHA-1and128bitAES-CBC-BC";
algorithms[BCObjectIdentifiers.bc_pbe_sha1_pkcs12_aes192_cbc.Id] = "PBEwithSHA-1and192bitAES-CBC-BC";
algorithms[BCObjectIdentifiers.bc_pbe_sha1_pkcs12_aes256_cbc.Id] = "PBEwithSHA-1and256bitAES-CBC-BC";
algorithms[BCObjectIdentifiers.bc_pbe_sha256_pkcs12_aes128_cbc.Id] = "PBEwithSHA-256and128bitAES-CBC-BC";
algorithms[BCObjectIdentifiers.bc_pbe_sha256_pkcs12_aes192_cbc.Id] = "PBEwithSHA-256and192bitAES-CBC-BC";
algorithms[BCObjectIdentifiers.bc_pbe_sha256_pkcs12_aes256_cbc.Id] = "PBEwithSHA-256and256bitAES-CBC-BC";
algorithms["PBEWITHSHAAND128BITRC4"] = "PBEwithSHA-1and128bitRC4";
algorithms["PBEWITHSHA1AND128BITRC4"] = "PBEwithSHA-1and128bitRC4";
algorithms["PBEWITHSHA-1AND128BITRC4"] = "PBEwithSHA-1and128bitRC4";
algorithms[PkcsObjectIdentifiers.PbeWithShaAnd128BitRC4.Id] = "PBEwithSHA-1and128bitRC4";
algorithms["PBEWITHSHAAND40BITRC4"] = "PBEwithSHA-1and40bitRC4";
algorithms["PBEWITHSHA1AND40BITRC4"] = "PBEwithSHA-1and40bitRC4";
algorithms["PBEWITHSHA-1AND40BITRC4"] = "PBEwithSHA-1and40bitRC4";
algorithms[PkcsObjectIdentifiers.PbeWithShaAnd40BitRC4.Id] = "PBEwithSHA-1and40bitRC4";
algorithms["PBEWITHSHAAND3-KEYDESEDE-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHAAND3-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHA1AND3-KEYDESEDE-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHA1AND3-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHA-1AND3-KEYDESEDE-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHA-1AND3-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithShaAnd3KeyTripleDesCbc.Id] = "PBEwithSHA-1and3-keyDESEDE-CBC";
algorithms["PBEWITHSHAAND2-KEYDESEDE-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHAAND2-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHA1AND2-KEYDESEDE-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHA1AND2-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHA-1AND2-KEYDESEDE-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHA-1AND2-KEYTRIPLEDES-CBC"] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithShaAnd2KeyTripleDesCbc.Id] = "PBEwithSHA-1and2-keyDESEDE-CBC";
algorithms["PBEWITHSHAAND128BITRC2-CBC"] = "PBEwithSHA-1and128bitRC2-CBC";
algorithms["PBEWITHSHA1AND128BITRC2-CBC"] = "PBEwithSHA-1and128bitRC2-CBC";
algorithms["PBEWITHSHA-1AND128BITRC2-CBC"] = "PBEwithSHA-1and128bitRC2-CBC";
algorithms[PkcsObjectIdentifiers.PbeWithShaAnd128BitRC2Cbc.Id] = "PBEwithSHA-1and128bitRC2-CBC";
algorithms["PBEWITHSHAAND40BITRC2-CBC"] = "PBEwithSHA-1and40bitRC2-CBC";
algorithms["PBEWITHSHA1AND40BITRC2-CBC"] = "PBEwithSHA-1and40bitRC2-CBC";
algorithms["PBEWITHSHA-1AND40BITRC2-CBC"] = "PBEwithSHA-1and40bitRC2-CBC";
algorithms[PkcsObjectIdentifiers.PbewithShaAnd40BitRC2Cbc.Id] = "PBEwithSHA-1and40bitRC2-CBC";
algorithms["PBEWITHSHAAND128BITAES-CBC-BC"] = "PBEwithSHA-1and128bitAES-CBC-BC";
algorithms["PBEWITHSHA1AND128BITAES-CBC-BC"] = "PBEwithSHA-1and128bitAES-CBC-BC";
algorithms["PBEWITHSHA-1AND128BITAES-CBC-BC"] = "PBEwithSHA-1and128bitAES-CBC-BC";
algorithms["PBEWITHSHAAND192BITAES-CBC-BC"] = "PBEwithSHA-1and192bitAES-CBC-BC";
algorithms["PBEWITHSHA1AND192BITAES-CBC-BC"] = "PBEwithSHA-1and192bitAES-CBC-BC";
algorithms["PBEWITHSHA-1AND192BITAES-CBC-BC"] = "PBEwithSHA-1and192bitAES-CBC-BC";
algorithms["PBEWITHSHAAND256BITAES-CBC-BC"] = "PBEwithSHA-1and256bitAES-CBC-BC";
algorithms["PBEWITHSHA1AND256BITAES-CBC-BC"] = "PBEwithSHA-1and256bitAES-CBC-BC";
algorithms["PBEWITHSHA-1AND256BITAES-CBC-BC"] = "PBEwithSHA-1and256bitAES-CBC-BC";
algorithms["PBEWITHSHA256AND128BITAES-CBC-BC"] = "PBEwithSHA-256and128bitAES-CBC-BC";
algorithms["PBEWITHSHA-256AND128BITAES-CBC-BC"] = "PBEwithSHA-256and128bitAES-CBC-BC";
algorithms["PBEWITHSHA256AND192BITAES-CBC-BC"] = "PBEwithSHA-256and192bitAES-CBC-BC";
algorithms["PBEWITHSHA-256AND192BITAES-CBC-BC"] = "PBEwithSHA-256and192bitAES-CBC-BC";
algorithms["PBEWITHSHA256AND256BITAES-CBC-BC"] = "PBEwithSHA-256and256bitAES-CBC-BC";
algorithms["PBEWITHSHA-256AND256BITAES-CBC-BC"] = "PBEwithSHA-256and256bitAES-CBC-BC";
algorithms["PBEWITHSHAANDIDEA"] = "PBEwithSHA-1andIDEA-CBC";
algorithms["PBEWITHSHAANDIDEA-CBC"] = "PBEwithSHA-1andIDEA-CBC";
algorithms["PBEWITHSHAANDTWOFISH"] = "PBEwithSHA-1andTWOFISH-CBC";
algorithms["PBEWITHSHAANDTWOFISH-CBC"] = "PBEwithSHA-1andTWOFISH-CBC";
algorithms["PBEWITHHMACSHA1"] = "PBEwithHmacSHA-1";
algorithms["PBEWITHHMACSHA-1"] = "PBEwithHmacSHA-1";
algorithms[OiwObjectIdentifiers.IdSha1.Id] = "PBEwithHmacSHA-1";
algorithms["PBEWITHHMACSHA224"] = "PBEwithHmacSHA-224";
algorithms["PBEWITHHMACSHA-224"] = "PBEwithHmacSHA-224";
algorithms[NistObjectIdentifiers.IdSha224.Id] = "PBEwithHmacSHA-224";
algorithms["PBEWITHHMACSHA256"] = "PBEwithHmacSHA-256";
algorithms["PBEWITHHMACSHA-256"] = "PBEwithHmacSHA-256";
algorithms[NistObjectIdentifiers.IdSha256.Id] = "PBEwithHmacSHA-256";
algorithms["PBEWITHHMACRIPEMD128"] = "PBEwithHmacRipeMD128";
algorithms[TeleTrusTObjectIdentifiers.RipeMD128.Id] = "PBEwithHmacRipeMD128";
algorithms["PBEWITHHMACRIPEMD160"] = "PBEwithHmacRipeMD160";
algorithms[TeleTrusTObjectIdentifiers.RipeMD160.Id] = "PBEwithHmacRipeMD160";
algorithms["PBEWITHHMACRIPEMD256"] = "PBEwithHmacRipeMD256";
algorithms[TeleTrusTObjectIdentifiers.RipeMD256.Id] = "PBEwithHmacRipeMD256";
algorithms["PBEWITHHMACTIGER"] = "PBEwithHmacTiger";
algorithms["PBEWITHMD5AND128BITAES-CBC-OPENSSL"] = "PBEwithMD5and128bitAES-CBC-OpenSSL";
algorithms["PBEWITHMD5AND192BITAES-CBC-OPENSSL"] = "PBEwithMD5and192bitAES-CBC-OpenSSL";
algorithms["PBEWITHMD5AND256BITAES-CBC-OPENSSL"] = "PBEwithMD5and256bitAES-CBC-OpenSSL";
algorithmType["Pkcs5scheme1"] = Pkcs5S1;
algorithmType["Pkcs5scheme2"] = Pkcs5S2;
algorithmType["PBEwithMD2andDES-CBC"] = Pkcs5S1;
algorithmType["PBEwithMD2andRC2-CBC"] = Pkcs5S1;
algorithmType["PBEwithMD5andDES-CBC"] = Pkcs5S1;
algorithmType["PBEwithMD5andRC2-CBC"] = Pkcs5S1;
algorithmType["PBEwithSHA-1andDES-CBC"] = Pkcs5S1;
algorithmType["PBEwithSHA-1andRC2-CBC"] = Pkcs5S1;
algorithmType["Pkcs12"] = Pkcs12;
algorithmType["PBEwithSHA-1and128bitRC4"] = Pkcs12;
algorithmType["PBEwithSHA-1and40bitRC4"] = Pkcs12;
algorithmType["PBEwithSHA-1and3-keyDESEDE-CBC"] = Pkcs12;
algorithmType["PBEwithSHA-1and2-keyDESEDE-CBC"] = Pkcs12;
algorithmType["PBEwithSHA-1and128bitRC2-CBC"] = Pkcs12;
algorithmType["PBEwithSHA-1and40bitRC2-CBC"] = Pkcs12;
algorithmType["PBEwithSHA-1and128bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-1and192bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-1and256bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-256and128bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-256and192bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-256and256bitAES-CBC-BC"] = Pkcs12;
algorithmType["PBEwithSHA-1andIDEA-CBC"] = Pkcs12;
algorithmType["PBEwithSHA-1andTWOFISH-CBC"] = Pkcs12;
algorithmType["PBEwithHmacSHA-1"] = Pkcs12;
algorithmType["PBEwithHmacSHA-224"] = Pkcs12;
algorithmType["PBEwithHmacSHA-256"] = Pkcs12;
algorithmType["PBEwithHmacRipeMD128"] = Pkcs12;
algorithmType["PBEwithHmacRipeMD160"] = Pkcs12;
algorithmType["PBEwithHmacRipeMD256"] = Pkcs12;
algorithmType["PBEwithHmacTiger"] = Pkcs12;
algorithmType["PBEwithMD5and128bitAES-CBC-OpenSSL"] = OpenSsl;
algorithmType["PBEwithMD5and192bitAES-CBC-OpenSSL"] = OpenSsl;
algorithmType["PBEwithMD5and256bitAES-CBC-OpenSSL"] = OpenSsl;
oids["PBEwithMD2andDES-CBC"] = PkcsObjectIdentifiers.PbeWithMD2AndDesCbc;
oids["PBEwithMD2andRC2-CBC"] = PkcsObjectIdentifiers.PbeWithMD2AndRC2Cbc;
oids["PBEwithMD5andDES-CBC"] = PkcsObjectIdentifiers.PbeWithMD5AndDesCbc;
oids["PBEwithMD5andRC2-CBC"] = PkcsObjectIdentifiers.PbeWithMD5AndRC2Cbc;
oids["PBEwithSHA-1andDES-CBC"] = PkcsObjectIdentifiers.PbeWithSha1AndDesCbc;
oids["PBEwithSHA-1andRC2-CBC"] = PkcsObjectIdentifiers.PbeWithSha1AndRC2Cbc;
oids["PBEwithSHA-1and128bitRC4"] = PkcsObjectIdentifiers.PbeWithShaAnd128BitRC4;
oids["PBEwithSHA-1and40bitRC4"] = PkcsObjectIdentifiers.PbeWithShaAnd40BitRC4;
oids["PBEwithSHA-1and3-keyDESEDE-CBC"] = PkcsObjectIdentifiers.PbeWithShaAnd3KeyTripleDesCbc;
oids["PBEwithSHA-1and2-keyDESEDE-CBC"] = PkcsObjectIdentifiers.PbeWithShaAnd2KeyTripleDesCbc;
oids["PBEwithSHA-1and128bitRC2-CBC"] = PkcsObjectIdentifiers.PbeWithShaAnd128BitRC2Cbc;
oids["PBEwithSHA-1and40bitRC2-CBC"] = PkcsObjectIdentifiers.PbewithShaAnd40BitRC2Cbc;
oids["PBEwithHmacSHA-1"] = OiwObjectIdentifiers.IdSha1;
oids["PBEwithHmacSHA-224"] = NistObjectIdentifiers.IdSha224;
oids["PBEwithHmacSHA-256"] = NistObjectIdentifiers.IdSha256;
oids["PBEwithHmacRipeMD128"] = TeleTrusTObjectIdentifiers.RipeMD128;
oids["PBEwithHmacRipeMD160"] = TeleTrusTObjectIdentifiers.RipeMD160;
oids["PBEwithHmacRipeMD256"] = TeleTrusTObjectIdentifiers.RipeMD256;
oids["Pkcs5scheme2"] = PkcsObjectIdentifiers.IdPbeS2;
}
static PbeParametersGenerator MakePbeGenerator(
string type,
IDigest digest,
byte[] key,
byte[] salt,
int iterationCount)
{
PbeParametersGenerator generator;
if (type.Equals(Pkcs5S1))
{
generator = new Pkcs5S1ParametersGenerator(digest);
}
else if (type.Equals(Pkcs5S2))
{
generator = new Pkcs5S2ParametersGenerator();
}
else if (type.Equals(Pkcs12))
{
generator = new Pkcs12ParametersGenerator(digest);
}
else if (type.Equals(OpenSsl))
{
generator = new OpenSslPbeParametersGenerator();
}
else
{
throw new ArgumentException("Unknown PBE type: " + type, "type");
}
generator.Init(key, salt, iterationCount);
return generator;
}
/// <summary>
/// Returns a ObjectIdentifier for a give encoding.
/// </summary>
/// <param name="mechanism">A string representation of the encoding.</param>
/// <returns>A DerObjectIdentifier, null if the Oid is not available.</returns>
public static DerObjectIdentifier GetObjectIdentifier(
string mechanism)
{
mechanism = (string) algorithms[Platform.ToUpperInvariant(mechanism)];
if (mechanism != null)
{
return (DerObjectIdentifier)oids[mechanism];
}
return null;
}
public static ICollection Algorithms
{
get { return oids.Keys; }
}
public static bool IsPkcs12(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
return mechanism != null && Pkcs12.Equals(algorithmType[mechanism]);
}
public static bool IsPkcs5Scheme1(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
return mechanism != null && Pkcs5S1.Equals(algorithmType[mechanism]);
}
public static bool IsPkcs5Scheme2(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
return mechanism != null && Pkcs5S2.Equals(algorithmType[mechanism]);
}
public static bool IsOpenSsl(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
return mechanism != null && OpenSsl.Equals(algorithmType[mechanism]);
}
public static bool IsPbeAlgorithm(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
return mechanism != null && algorithmType[mechanism] != null;
}
public static Asn1Encodable GenerateAlgorithmParameters(
DerObjectIdentifier algorithmOid,
byte[] salt,
int iterationCount)
{
return GenerateAlgorithmParameters(algorithmOid.Id, salt, iterationCount);
}
public static Asn1Encodable GenerateAlgorithmParameters(
string algorithm,
byte[] salt,
int iterationCount)
{
if (IsPkcs12(algorithm))
{
return new Pkcs12PbeParams(salt, iterationCount);
}
else if (IsPkcs5Scheme2(algorithm))
{
return new Pbkdf2Params(salt, iterationCount);
}
else
{
return new PbeParameter(salt, iterationCount);
}
}
public static ICipherParameters GenerateCipherParameters(
DerObjectIdentifier algorithmOid,
char[] password,
Asn1Encodable pbeParameters)
{
return GenerateCipherParameters(algorithmOid.Id, password, false, pbeParameters);
}
public static ICipherParameters GenerateCipherParameters(
DerObjectIdentifier algorithmOid,
char[] password,
bool wrongPkcs12Zero,
Asn1Encodable pbeParameters)
{
return GenerateCipherParameters(algorithmOid.Id, password, wrongPkcs12Zero, pbeParameters);
}
public static ICipherParameters GenerateCipherParameters(
AlgorithmIdentifier algID,
char[] password)
{
return GenerateCipherParameters(algID.Algorithm.Id, password, false, algID.Parameters);
}
public static ICipherParameters GenerateCipherParameters(
AlgorithmIdentifier algID,
char[] password,
bool wrongPkcs12Zero)
{
return GenerateCipherParameters(algID.Algorithm.Id, password, wrongPkcs12Zero, algID.Parameters);
}
public static ICipherParameters GenerateCipherParameters(
string algorithm,
char[] password,
Asn1Encodable pbeParameters)
{
return GenerateCipherParameters(algorithm, password, false, pbeParameters);
}
public static ICipherParameters GenerateCipherParameters(
string algorithm,
char[] password,
bool wrongPkcs12Zero,
Asn1Encodable pbeParameters)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
byte[] keyBytes = null;
byte[] salt = null;
int iterationCount = 0;
if (IsPkcs12(mechanism))
{
Pkcs12PbeParams pbeParams = Pkcs12PbeParams.GetInstance(pbeParameters);
salt = pbeParams.GetIV();
iterationCount = pbeParams.Iterations.IntValue;
keyBytes = PbeParametersGenerator.Pkcs12PasswordToBytes(password, wrongPkcs12Zero);
}
else if (IsPkcs5Scheme2(mechanism))
{
// See below
}
else
{
PbeParameter pbeParams = PbeParameter.GetInstance(pbeParameters);
salt = pbeParams.GetSalt();
iterationCount = pbeParams.IterationCount.IntValue;
keyBytes = PbeParametersGenerator.Pkcs5PasswordToBytes(password);
}
ICipherParameters parameters = null;
if (IsPkcs5Scheme2(mechanism))
{
PbeS2Parameters s2p = PbeS2Parameters.GetInstance(pbeParameters.ToAsn1Object());
AlgorithmIdentifier encScheme = s2p.EncryptionScheme;
DerObjectIdentifier encOid = encScheme.Algorithm;
Asn1Object encParams = encScheme.Parameters.ToAsn1Object();
// TODO What about s2p.KeyDerivationFunc.Algorithm?
Pbkdf2Params pbeParams = Pbkdf2Params.GetInstance(s2p.KeyDerivationFunc.Parameters.ToAsn1Object());
byte[] iv;
if (encOid.Equals(PkcsObjectIdentifiers.RC2Cbc)) // PKCS5.B.2.3
{
RC2CbcParameter rc2Params = RC2CbcParameter.GetInstance(encParams);
iv = rc2Params.GetIV();
}
else
{
iv = Asn1OctetString.GetInstance(encParams).GetOctets();
}
salt = pbeParams.GetSalt();
iterationCount = pbeParams.IterationCount.IntValue;
keyBytes = PbeParametersGenerator.Pkcs5PasswordToBytes(password);
int keyLength = pbeParams.KeyLength != null
? pbeParams.KeyLength.IntValue * 8
: GeneratorUtilities.GetDefaultKeySize(encOid);
PbeParametersGenerator gen = MakePbeGenerator(
(string)algorithmType[mechanism], null, keyBytes, salt, iterationCount);
parameters = gen.GenerateDerivedParameters(encOid.Id, keyLength);
if (iv != null)
{
// FIXME? OpenSSL weirdness with IV of zeros (for ECB keys?)
if (Arrays.AreEqual(iv, new byte[iv.Length]))
{
//Console.Error.Write("***** IV all 0 (length " + iv.Length + ") *****");
}
else
{
parameters = new ParametersWithIV(parameters, iv);
}
}
}
else if (Platform.StartsWith(mechanism, "PBEwithSHA-1"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string) algorithmType[mechanism], new Sha1Digest(), keyBytes, salt, iterationCount);
if (mechanism.Equals("PBEwithSHA-1and128bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 128, 128);
}
else if (mechanism.Equals("PBEwithSHA-1and192bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 192, 128);
}
else if (mechanism.Equals("PBEwithSHA-1and256bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 256, 128);
}
else if (mechanism.Equals("PBEwithSHA-1and128bitRC4"))
{
parameters = generator.GenerateDerivedParameters("RC4", 128);
}
else if (mechanism.Equals("PBEwithSHA-1and40bitRC4"))
{
parameters = generator.GenerateDerivedParameters("RC4", 40);
}
else if (mechanism.Equals("PBEwithSHA-1and3-keyDESEDE-CBC"))
{
parameters = generator.GenerateDerivedParameters("DESEDE", 192, 64);
}
else if (mechanism.Equals("PBEwithSHA-1and2-keyDESEDE-CBC"))
{
parameters = generator.GenerateDerivedParameters("DESEDE", 128, 64);
}
else if (mechanism.Equals("PBEwithSHA-1and128bitRC2-CBC"))
{
parameters = generator.GenerateDerivedParameters("RC2", 128, 64);
}
else if (mechanism.Equals("PBEwithSHA-1and40bitRC2-CBC"))
{
parameters = generator.GenerateDerivedParameters("RC2", 40, 64);
}
else if (mechanism.Equals("PBEwithSHA-1andDES-CBC"))
{
parameters = generator.GenerateDerivedParameters("DES", 64, 64);
}
else if (mechanism.Equals("PBEwithSHA-1andRC2-CBC"))
{
parameters = generator.GenerateDerivedParameters("RC2", 64, 64);
}
}
else if (Platform.StartsWith(mechanism, "PBEwithSHA-256"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string) algorithmType[mechanism], new Sha256Digest(), keyBytes, salt, iterationCount);
if (mechanism.Equals("PBEwithSHA-256and128bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 128, 128);
}
else if (mechanism.Equals("PBEwithSHA-256and192bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 192, 128);
}
else if (mechanism.Equals("PBEwithSHA-256and256bitAES-CBC-BC"))
{
parameters = generator.GenerateDerivedParameters("AES", 256, 128);
}
}
else if (Platform.StartsWith(mechanism, "PBEwithMD5"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string)algorithmType[mechanism], new MD5Digest(), keyBytes, salt, iterationCount);
if (mechanism.Equals("PBEwithMD5andDES-CBC"))
{
parameters = generator.GenerateDerivedParameters("DES", 64, 64);
}
else if (mechanism.Equals("PBEwithMD5andRC2-CBC"))
{
parameters = generator.GenerateDerivedParameters("RC2", 64, 64);
}
else if (mechanism.Equals("PBEwithMD5and128bitAES-CBC-OpenSSL"))
{
parameters = generator.GenerateDerivedParameters("AES", 128, 128);
}
else if (mechanism.Equals("PBEwithMD5and192bitAES-CBC-OpenSSL"))
{
parameters = generator.GenerateDerivedParameters("AES", 192, 128);
}
else if (mechanism.Equals("PBEwithMD5and256bitAES-CBC-OpenSSL"))
{
parameters = generator.GenerateDerivedParameters("AES", 256, 128);
}
}
else if (Platform.StartsWith(mechanism, "PBEwithMD2"))
{
PbeParametersGenerator generator = MakePbeGenerator(
(string)algorithmType[mechanism], new MD2Digest(), keyBytes, salt, iterationCount);
if (mechanism.Equals("PBEwithMD2andDES-CBC"))
{
parameters = generator.GenerateDerivedParameters("DES", 64, 64);
}
else if (mechanism.Equals("PBEwithMD2andRC2-CBC"))
{
parameters = generator.GenerateDerivedParameters("RC2", 64, 64);
}
}
else if (Platform.StartsWith(mechanism, "PBEwithHmac"))
{
string digestName = mechanism.Substring("PBEwithHmac".Length);
IDigest digest = DigestUtilities.GetDigest(digestName);
PbeParametersGenerator generator = MakePbeGenerator(
(string) algorithmType[mechanism], digest, keyBytes, salt, iterationCount);
int bitLen = digest.GetDigestSize() * 8;
parameters = generator.GenerateDerivedMacParameters(bitLen);
}
Array.Clear(keyBytes, 0, keyBytes.Length);
return FixDesParity(mechanism, parameters);
}
public static object CreateEngine(
DerObjectIdentifier algorithmOid)
{
return CreateEngine(algorithmOid.Id);
}
public static object CreateEngine(
AlgorithmIdentifier algID)
{
string algorithm = algID.Algorithm.Id;
if (IsPkcs5Scheme2(algorithm))
{
PbeS2Parameters s2p = PbeS2Parameters.GetInstance(algID.Parameters.ToAsn1Object());
AlgorithmIdentifier encScheme = s2p.EncryptionScheme;
return CipherUtilities.GetCipher(encScheme.Algorithm);
}
return CreateEngine(algorithm);
}
public static object CreateEngine(
string algorithm)
{
string mechanism = (string)algorithms[Platform.ToUpperInvariant(algorithm)];
if (Platform.StartsWith(mechanism, "PBEwithHmac"))
{
string digestName = mechanism.Substring("PBEwithHmac".Length);
return MacUtilities.GetMac("HMAC/" + digestName);
}
if (Platform.StartsWith(mechanism, "PBEwithMD2")
|| Platform.StartsWith(mechanism, "PBEwithMD5")
|| Platform.StartsWith(mechanism, "PBEwithSHA-1")
|| Platform.StartsWith(mechanism, "PBEwithSHA-256"))
{
if (Platform.EndsWith(mechanism, "AES-CBC-BC") || Platform.EndsWith(mechanism, "AES-CBC-OPENSSL"))
{
return CipherUtilities.GetCipher("AES/CBC");
}
if (Platform.EndsWith(mechanism, "DES-CBC"))
{
return CipherUtilities.GetCipher("DES/CBC");
}
if (Platform.EndsWith(mechanism, "DESEDE-CBC"))
{
return CipherUtilities.GetCipher("DESEDE/CBC");
}
if (Platform.EndsWith(mechanism, "RC2-CBC"))
{
return CipherUtilities.GetCipher("RC2/CBC");
}
if (Platform.EndsWith(mechanism, "RC4"))
{
return CipherUtilities.GetCipher("RC4");
}
}
return null;
}
public static string GetEncodingName(
DerObjectIdentifier oid)
{
return (string) algorithms[oid.Id];
}
private static ICipherParameters FixDesParity(string mechanism, ICipherParameters parameters)
{
if (!Platform.EndsWith(mechanism, "DES-CBC") && !Platform.EndsWith(mechanism, "DESEDE-CBC"))
{
return parameters;
}
if (parameters is ParametersWithIV)
{
ParametersWithIV ivParams = (ParametersWithIV)parameters;
return new ParametersWithIV(FixDesParity(mechanism, ivParams.Parameters), ivParams.GetIV());
}
KeyParameter kParam = (KeyParameter)parameters;
byte[] keyBytes = kParam.GetKey();
DesParameters.SetOddParity(keyBytes);
return new KeyParameter(keyBytes);
}
}
}