using System;
using System.Collections;
using System.Globalization;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.CryptoPro;
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.TeleTrust;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Signers;
namespace Org.BouncyCastle.Security{
/// <summary>
/// Signer Utility class contains methods that can not be specifically grouped into other classes.
/// </summary>
public sealed class SignerUtilities
{
private SignerUtilities()
{
}
internal static readonly Hashtable algorithms = new Hashtable();
internal static readonly Hashtable oids = new Hashtable();
static SignerUtilities()
{
algorithms["MD2WITHRSA"] = "MD2withRSA";
algorithms["MD2WITHRSAENCRYPTION"] = "MD2withRSA";
algorithms[PkcsObjectIdentifiers.MD2WithRsaEncryption.Id] = "MD2withRSA";
algorithms["MD4WITHRSA"] = "MD4withRSA";
algorithms["MD4WITHRSAENCRYPTION"] = "MD4withRSA";
algorithms[PkcsObjectIdentifiers.MD4WithRsaEncryption.Id] = "MD4withRSA";
algorithms["MD5WITHRSA"] = "MD5withRSA";
algorithms["MD5WITHRSAENCRYPTION"] = "MD5withRSA";
algorithms[PkcsObjectIdentifiers.MD5WithRsaEncryption.Id] = "MD5withRSA";
algorithms["SHA1WITHRSA"] = "SHA-1withRSA";
algorithms["SHA1WITHRSAENCRYPTION"] = "SHA-1withRSA";
algorithms[PkcsObjectIdentifiers.Sha1WithRsaEncryption.Id] = "SHA-1withRSA";
algorithms["SHA-1WITHRSA"] = "SHA-1withRSA";
algorithms["SHA224WITHRSA"] = "SHA-224withRSA";
algorithms["SHA224WITHRSAENCRYPTION"] = "SHA-224withRSA";
algorithms[PkcsObjectIdentifiers.Sha224WithRsaEncryption.Id] = "SHA-224withRSA";
algorithms["SHA-224WITHRSA"] = "SHA-224withRSA";
algorithms["SHA256WITHRSA"] = "SHA-256withRSA";
algorithms["SHA256WITHRSAENCRYPTION"] = "SHA-256withRSA";
algorithms[PkcsObjectIdentifiers.Sha256WithRsaEncryption.Id] = "SHA-256withRSA";
algorithms["SHA-256WITHRSA"] = "SHA-256withRSA";
algorithms["SHA384WITHRSA"] = "SHA-384withRSA";
algorithms["SHA384WITHRSAENCRYPTION"] = "SHA-384withRSA";
algorithms[PkcsObjectIdentifiers.Sha384WithRsaEncryption.Id] = "SHA-384withRSA";
algorithms["SHA-384WITHRSA"] = "SHA-384withRSA";
algorithms["SHA512WITHRSA"] = "SHA-512withRSA";
algorithms["SHA512WITHRSAENCRYPTION"] = "SHA-512withRSA";
algorithms[PkcsObjectIdentifiers.Sha512WithRsaEncryption.Id] = "SHA-512withRSA";
algorithms["SHA-512WITHRSA"] = "SHA-512withRSA";
algorithms["PSSWITHRSA"] = "PSSwithRSA";
algorithms["RSASSA-PSS"] = "PSSwithRSA";
algorithms[PkcsObjectIdentifiers.IdRsassaPss.Id] = "PSSwithRSA";
algorithms["RSAPSS"] = "PSSwithRSA";
algorithms["SHA1WITHRSAANDMGF1"] = "SHA-1withRSAandMGF1";
algorithms["SHA-1WITHRSAANDMGF1"] = "SHA-1withRSAandMGF1";
algorithms["SHA1WITHRSA/PSS"] = "SHA-1withRSAandMGF1";
algorithms["SHA-1WITHRSA/PSS"] = "SHA-1withRSAandMGF1";
algorithms["SHA224WITHRSAANDMGF1"] = "SHA-224withRSAandMGF1";
algorithms["SHA-224WITHRSAANDMGF1"] = "SHA-224withRSAandMGF1";
algorithms["SHA224WITHRSA/PSS"] = "SHA-224withRSAandMGF1";
algorithms["SHA-224WITHRSA/PSS"] = "SHA-224withRSAandMGF1";
algorithms["SHA256WITHRSAANDMGF1"] = "SHA-256withRSAandMGF1";
algorithms["SHA-256WITHRSAANDMGF1"] = "SHA-256withRSAandMGF1";
algorithms["SHA256WITHRSA/PSS"] = "SHA-256withRSAandMGF1";
algorithms["SHA-256WITHRSA/PSS"] = "SHA-256withRSAandMGF1";
algorithms["SHA384WITHRSAANDMGF1"] = "SHA-384withRSAandMGF1";
algorithms["SHA-384WITHRSAANDMGF1"] = "SHA-384withRSAandMGF1";
algorithms["SHA384WITHRSA/PSS"] = "SHA-384withRSAandMGF1";
algorithms["SHA-384WITHRSA/PSS"] = "SHA-384withRSAandMGF1";
algorithms["SHA512WITHRSAANDMGF1"] = "SHA-512withRSAandMGF1";
algorithms["SHA-512WITHRSAANDMGF1"] = "SHA-512withRSAandMGF1";
algorithms["SHA512WITHRSA/PSS"] = "SHA-512withRSAandMGF1";
algorithms["SHA-512WITHRSA/PSS"] = "SHA-512withRSAandMGF1";
algorithms["RIPEMD128WITHRSA"] = "RIPEMD128withRSA";
algorithms["RIPEMD128WITHRSAENCRYPTION"] = "RIPEMD128withRSA";
algorithms[TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128.Id] = "RIPEMD128withRSA";
algorithms["RIPEMD160WITHRSA"] = "RIPEMD160withRSA";
algorithms["RIPEMD160WITHRSAENCRYPTION"] = "RIPEMD160withRSA";
algorithms[TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160.Id] = "RIPEMD160withRSA";
algorithms["RIPEMD256WITHRSA"] = "RIPEMD256withRSA";
algorithms["RIPEMD256WITHRSAENCRYPTION"] = "RIPEMD256withRSA";
algorithms[TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256.Id] = "RIPEMD256withRSA";
algorithms["NONEWITHRSA"] = "RSA";
algorithms["RSAWITHNONE"] = "RSA";
algorithms["RAWRSA"] = "RSA";
algorithms["RAWRSAPSS"] = "RAWRSASSA-PSS";
algorithms["NONEWITHRSAPSS"] = "RAWRSASSA-PSS";
algorithms["NONEWITHRSASSA-PSS"] = "RAWRSASSA-PSS";
algorithms["NONEWITHDSA"] = "NONEwithDSA";
algorithms["DSAWITHNONE"] = "NONEwithDSA";
algorithms["RAWDSA"] = "NONEwithDSA";
algorithms["DSA"] = "SHA-1withDSA";
algorithms["DSAWITHSHA1"] = "SHA-1withDSA";
algorithms["DSAWITHSHA-1"] = "SHA-1withDSA";
algorithms["SHA/DSA"] = "SHA-1withDSA";
algorithms["SHA1/DSA"] = "SHA-1withDSA";
algorithms["SHA-1/DSA"] = "SHA-1withDSA";
algorithms["SHA1WITHDSA"] = "SHA-1withDSA";
algorithms["SHA-1WITHDSA"] = "SHA-1withDSA";
algorithms[X9ObjectIdentifiers.IdDsaWithSha1.Id] = "SHA-1withDSA";
algorithms["DSAWITHSHA224"] = "SHA-224withDSA";
algorithms["DSAWITHSHA-224"] = "SHA-224withDSA";
algorithms["SHA224/DSA"] = "SHA-224withDSA";
algorithms["SHA-224/DSA"] = "SHA-224withDSA";
algorithms["SHA224WITHDSA"] = "SHA-224withDSA";
algorithms["SHA-224WITHDSA"] = "SHA-224withDSA";
algorithms[NistObjectIdentifiers.DsaWithSha224.Id] = "SHA-224withDSA";
algorithms["DSAWITHSHA256"] = "SHA-256withDSA";
algorithms["DSAWITHSHA-256"] = "SHA-256withDSA";
algorithms["SHA256/DSA"] = "SHA-256withDSA";
algorithms["SHA-256/DSA"] = "SHA-256withDSA";
algorithms["SHA256WITHDSA"] = "SHA-256withDSA";
algorithms["SHA-256WITHDSA"] = "SHA-256withDSA";
algorithms[NistObjectIdentifiers.DsaWithSha256.Id] = "SHA-256withDSA";
algorithms["DSAWITHSHA384"] = "SHA-384withDSA";
algorithms["DSAWITHSHA-384"] = "SHA-384withDSA";
algorithms["SHA384/DSA"] = "SHA-384withDSA";
algorithms["SHA-384/DSA"] = "SHA-384withDSA";
algorithms["SHA384WITHDSA"] = "SHA-384withDSA";
algorithms["SHA-384WITHDSA"] = "SHA-384withDSA";
algorithms[NistObjectIdentifiers.DsaWithSha384.Id] = "SHA-384withDSA";
algorithms["DSAWITHSHA512"] = "SHA-512withDSA";
algorithms["DSAWITHSHA-512"] = "SHA-512withDSA";
algorithms["SHA512/DSA"] = "SHA-512withDSA";
algorithms["SHA-512/DSA"] = "SHA-512withDSA";
algorithms["SHA512WITHDSA"] = "SHA-512withDSA";
algorithms["SHA-512WITHDSA"] = "SHA-512withDSA";
algorithms[NistObjectIdentifiers.DsaWithSha512.Id] = "SHA-512withDSA";
algorithms["NONEWITHECDSA"] = "NONEwithECDSA";
algorithms["ECDSAWITHNONE"] = "NONEwithECDSA";
algorithms["ECDSA"] = "SHA-1withECDSA";
algorithms["SHA1/ECDSA"] = "SHA-1withECDSA";
algorithms["SHA-1/ECDSA"] = "SHA-1withECDSA";
algorithms["ECDSAWITHSHA1"] = "SHA-1withECDSA";
algorithms["ECDSAWITHSHA-1"] = "SHA-1withECDSA";
algorithms["SHA1WITHECDSA"] = "SHA-1withECDSA";
algorithms["SHA-1WITHECDSA"] = "SHA-1withECDSA";
algorithms[X9ObjectIdentifiers.ECDsaWithSha1.Id] = "SHA-1withECDSA";
algorithms[TeleTrusTObjectIdentifiers.ECSignWithSha1.Id] = "SHA-1withECDSA";
algorithms["SHA224/ECDSA"] = "SHA-224withECDSA";
algorithms["SHA-224/ECDSA"] = "SHA-224withECDSA";
algorithms["ECDSAWITHSHA224"] = "SHA-224withECDSA";
algorithms["ECDSAWITHSHA-224"] = "SHA-224withECDSA";
algorithms["SHA224WITHECDSA"] = "SHA-224withECDSA";
algorithms["SHA-224WITHECDSA"] = "SHA-224withECDSA";
algorithms[X9ObjectIdentifiers.ECDsaWithSha224.Id] = "SHA-224withECDSA";
algorithms["SHA256/ECDSA"] = "SHA-256withECDSA";
algorithms["SHA-256/ECDSA"] = "SHA-256withECDSA";
algorithms["ECDSAWITHSHA256"] = "SHA-256withECDSA";
algorithms["ECDSAWITHSHA-256"] = "SHA-256withECDSA";
algorithms["SHA256WITHECDSA"] = "SHA-256withECDSA";
algorithms["SHA-256WITHECDSA"] = "SHA-256withECDSA";
algorithms[X9ObjectIdentifiers.ECDsaWithSha256.Id] = "SHA-256withECDSA";
algorithms["SHA384/ECDSA"] = "SHA-384withECDSA";
algorithms["SHA-384/ECDSA"] = "SHA-384withECDSA";
algorithms["ECDSAWITHSHA384"] = "SHA-384withECDSA";
algorithms["ECDSAWITHSHA-384"] = "SHA-384withECDSA";
algorithms["SHA384WITHECDSA"] = "SHA-384withECDSA";
algorithms["SHA-384WITHECDSA"] = "SHA-384withECDSA";
algorithms[X9ObjectIdentifiers.ECDsaWithSha384.Id] = "SHA-384withECDSA";
algorithms["SHA512/ECDSA"] = "SHA-512withECDSA";
algorithms["SHA-512/ECDSA"] = "SHA-512withECDSA";
algorithms["ECDSAWITHSHA512"] = "SHA-512withECDSA";
algorithms["ECDSAWITHSHA-512"] = "SHA-512withECDSA";
algorithms["SHA512WITHECDSA"] = "SHA-512withECDSA";
algorithms["SHA-512WITHECDSA"] = "SHA-512withECDSA";
algorithms[X9ObjectIdentifiers.ECDsaWithSha512.Id] = "SHA-512withECDSA";
algorithms["RIPEMD160/ECDSA"] = "RIPEMD160withECDSA";
algorithms["SHA-512/ECDSA"] = "RIPEMD160withECDSA";
algorithms["ECDSAWITHRIPEMD160"] = "RIPEMD160withECDSA";
algorithms["ECDSAWITHRIPEMD160"] = "RIPEMD160withECDSA";
algorithms["RIPEMD160WITHECDSA"] = "RIPEMD160withECDSA";
algorithms["RIPEMD160WITHECDSA"] = "RIPEMD160withECDSA";
algorithms[TeleTrusTObjectIdentifiers.ECSignWithRipeMD160.Id] = "RIPEMD160withECDSA";
algorithms["GOST-3410"] = "GOST3410";
algorithms["GOST-3410-94"] = "GOST3410";
algorithms["GOST3411WITHGOST3410"] = "GOST3410";
algorithms[CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94.Id] = "GOST3410";
algorithms["ECGOST-3410"] = "ECGOST3410";
algorithms["ECGOST-3410-2001"] = "ECGOST3410";
algorithms["GOST3411WITHECGOST3410"] = "ECGOST3410";
algorithms[CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001.Id] = "ECGOST3410";
oids["MD2withRSA"] = PkcsObjectIdentifiers.MD2WithRsaEncryption;
oids["MD4withRSA"] = PkcsObjectIdentifiers.MD4WithRsaEncryption;
oids["MD5withRSA"] = PkcsObjectIdentifiers.MD5WithRsaEncryption;
oids["SHA-1withRSA"] = PkcsObjectIdentifiers.Sha1WithRsaEncryption;
oids["SHA-224withRSA"] = PkcsObjectIdentifiers.Sha224WithRsaEncryption;
oids["SHA-256withRSA"] = PkcsObjectIdentifiers.Sha256WithRsaEncryption;
oids["SHA-384withRSA"] = PkcsObjectIdentifiers.Sha384WithRsaEncryption;
oids["SHA-512withRSA"] = PkcsObjectIdentifiers.Sha512WithRsaEncryption;
oids["PSSwithRSA"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["SHA-1withRSAandMGF1"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["SHA-224withRSAandMGF1"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["SHA-256withRSAandMGF1"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["SHA-384withRSAandMGF1"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["SHA-512withRSAandMGF1"] = PkcsObjectIdentifiers.IdRsassaPss;
oids["RIPEMD128withRSA"] = TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD128;
oids["RIPEMD160withRSA"] = TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD160;
oids["RIPEMD256withRSA"] = TeleTrusTObjectIdentifiers.RsaSignatureWithRipeMD256;
oids["SHA-1withDSA"] = X9ObjectIdentifiers.IdDsaWithSha1;
oids["SHA-1withECDSA"] = X9ObjectIdentifiers.ECDsaWithSha1;
oids["SHA-224withECDSA"] = X9ObjectIdentifiers.ECDsaWithSha224;
oids["SHA-256withECDSA"] = X9ObjectIdentifiers.ECDsaWithSha256;
oids["SHA-384withECDSA"] = X9ObjectIdentifiers.ECDsaWithSha384;
oids["SHA-512withECDSA"] = X9ObjectIdentifiers.ECDsaWithSha512;
oids["GOST3410"] = CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x94;
oids["ECGOST3410"] = CryptoProObjectIdentifiers.GostR3411x94WithGostR3410x2001;
}
/// <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>
// TODO Don't really want to support this
public static DerObjectIdentifier GetObjectIdentifier(
string mechanism)
{
if (mechanism == null)
throw new ArgumentNullException("mechanism");
mechanism = mechanism.ToUpper(CultureInfo.InvariantCulture);
string aliased = (string) algorithms[mechanism];
if (aliased != null)
mechanism = aliased;
return (DerObjectIdentifier) oids[mechanism];
}
public static ICollection Algorithms
{
get { return oids.Keys; }
}
public static Asn1Encodable GetDefaultX509Parameters(
DerObjectIdentifier id)
{
return GetDefaultX509Parameters(id.Id);
}
public static Asn1Encodable GetDefaultX509Parameters(
string algorithm)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
algorithm = algorithm.ToUpper(CultureInfo.InvariantCulture);
string mechanism = (string) algorithms[algorithm];
if (mechanism == null)
mechanism = algorithm;
switch (mechanism)
{
case "PSSwithRSA":
// TODO The Sha1Digest here is a default. In JCE version, the actual digest
// to be used can be overridden by subsequent parameter settings.
return GetPssX509Parameters("SHA-1");
case "SHA-1withRSAandMGF1":
return GetPssX509Parameters("SHA-1");
case "SHA-224withRSAandMGF1":
return GetPssX509Parameters("SHA-224");
case "SHA-256withRSAandMGF1":
return GetPssX509Parameters("SHA-256");
case "SHA-384withRSAandMGF1":
return GetPssX509Parameters("SHA-384");
case "SHA-512withRSAandMGF1":
return GetPssX509Parameters("SHA-512");
default:
return DerNull.Instance;
}
}
private static Asn1Encodable GetPssX509Parameters(
string digestName)
{
AlgorithmIdentifier hashAlgorithm = new AlgorithmIdentifier(
DigestUtilities.GetObjectIdentifier(digestName), DerNull.Instance);
// TODO Is it possible for the MGF hash alg to be different from the PSS one?
AlgorithmIdentifier maskGenAlgorithm = new AlgorithmIdentifier(
PkcsObjectIdentifiers.IdMgf1, hashAlgorithm);
int saltLen = DigestUtilities.GetDigest(digestName).GetDigestSize();
return new RsassaPssParameters(hashAlgorithm, maskGenAlgorithm,
new DerInteger(saltLen), new DerInteger(1));
}
public static ISigner GetSigner(
DerObjectIdentifier id)
{
return GetSigner(id.Id);
}
public static ISigner GetSigner(
string algorithm)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
algorithm = algorithm.ToUpper(CultureInfo.InvariantCulture);
string mechanism = (string) algorithms[algorithm];
if (mechanism == null)
mechanism = algorithm;
if (mechanism.Equals("RSA"))
{
return (new RsaDigestSigner(new NullDigest()));
}
if (mechanism.Equals("MD2withRSA"))
{
return (new RsaDigestSigner(new MD2Digest()));
}
if (mechanism.Equals("MD4withRSA"))
{
return (new RsaDigestSigner(new MD4Digest()));
}
if (mechanism.Equals("MD5withRSA"))
{
return (new RsaDigestSigner(new MD5Digest()));
}
if (mechanism.Equals("SHA-1withRSA"))
{
return (new RsaDigestSigner(new Sha1Digest()));
}
if (mechanism.Equals("SHA-224withRSA"))
{
return (new RsaDigestSigner(new Sha224Digest()));
}
if (mechanism.Equals("SHA-256withRSA"))
{
return (new RsaDigestSigner(new Sha256Digest()));
}
if (mechanism.Equals("SHA-384withRSA"))
{
return (new RsaDigestSigner(new Sha384Digest()));
}
if (mechanism.Equals("SHA-512withRSA"))
{
return (new RsaDigestSigner(new Sha512Digest()));
}
if (mechanism.Equals("RIPEMD128withRSA"))
{
return (new RsaDigestSigner(new RipeMD128Digest()));
}
if (mechanism.Equals("RIPEMD160withRSA"))
{
return (new RsaDigestSigner(new RipeMD160Digest()));
}
if (mechanism.Equals("RIPEMD256withRSA"))
{
return (new RsaDigestSigner(new RipeMD256Digest()));
}
if (mechanism.Equals("RAWRSASSA-PSS"))
{
// TODO Add support for other parameter settings
IDigest contentDigest = new NullDigest();
IDigest mgfDigest = new Sha1Digest();
int saltLen = mgfDigest.GetDigestSize();
return (new PssSigner(new RsaBlindedEngine(), contentDigest, mgfDigest, saltLen, PssSigner.TrailerImplicit));
}
if (mechanism.Equals("PSSwithRSA"))
{
// TODO The Sha1Digest here is a default. In JCE version, the actual digest
// to be used can be overridden by subsequent parameter settings.
return (new PssSigner(new RsaBlindedEngine(), new Sha1Digest()));
}
if (mechanism.Equals("SHA-1withRSAandMGF1"))
{
return (new PssSigner(new RsaBlindedEngine(), new Sha1Digest()));
}
if (mechanism.Equals("SHA-224withRSAandMGF1"))
{
return (new PssSigner(new RsaBlindedEngine(), new Sha224Digest()));
}
if (mechanism.Equals("SHA-256withRSAandMGF1"))
{
return (new PssSigner(new RsaBlindedEngine(), new Sha256Digest()));
}
if (mechanism.Equals("SHA-384withRSAandMGF1"))
{
return (new PssSigner(new RsaBlindedEngine(), new Sha384Digest()));
}
if (mechanism.Equals("SHA-512withRSAandMGF1"))
{
return (new PssSigner(new RsaBlindedEngine(), new Sha512Digest()));
}
if (mechanism.Equals("NONEwithDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new NullDigest()));
}
if (mechanism.Equals("SHA-1withDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new Sha1Digest()));
}
if (mechanism.Equals("SHA-224withDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new Sha224Digest()));
}
if (mechanism.Equals("SHA-256withDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new Sha256Digest()));
}
if (mechanism.Equals("SHA-384withDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new Sha384Digest()));
}
if (mechanism.Equals("SHA-512withDSA"))
{
return (new DsaDigestSigner(new DsaSigner(), new Sha512Digest()));
}
if (mechanism.Equals("NONEwithECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new NullDigest()));
}
if (mechanism.Equals("SHA-1withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new Sha1Digest()));
}
if (mechanism.Equals("SHA-224withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new Sha224Digest()));
}
if (mechanism.Equals("SHA-256withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new Sha256Digest()));
}
if (mechanism.Equals("SHA-384withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new Sha384Digest()));
}
if (mechanism.Equals("SHA-512withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new Sha512Digest()));
}
if (mechanism.Equals("RIPEMD160withECDSA"))
{
return (new DsaDigestSigner(new ECDsaSigner(), new RipeMD160Digest()));
}
if (mechanism.Equals("SHA1WITHECNR"))
{
return (new DsaDigestSigner(new ECNRSigner(), new Sha1Digest()));
}
if (mechanism.Equals("SHA224WITHECNR"))
{
return (new DsaDigestSigner(new ECNRSigner(), new Sha224Digest()));
}
if (mechanism.Equals("SHA256WITHECNR"))
{
return (new DsaDigestSigner(new ECNRSigner(), new Sha256Digest()));
}
if (mechanism.Equals("SHA384WITHECNR"))
{
return (new DsaDigestSigner(new ECNRSigner(), new Sha384Digest()));
}
if (mechanism.Equals("SHA512WITHECNR"))
{
return (new DsaDigestSigner(new ECNRSigner(), new Sha512Digest()));
}
if (mechanism.Equals("GOST3410"))
{
return new Gost3410DigestSigner(new Gost3410Signer(), new Gost3411Digest());
}
if (mechanism.Equals("ECGOST3410"))
{
return new Gost3410DigestSigner(new ECGost3410Signer(), new Gost3411Digest());
}
if (mechanism.Equals("SHA1WITHRSA/ISO9796-2"))
{
return new Iso9796d2Signer(new RsaBlindedEngine(), new Sha1Digest(), true);
}
if (mechanism.Equals("MD5WITHRSA/ISO9796-2"))
{
return new Iso9796d2Signer(new RsaBlindedEngine(), new MD5Digest(), true);
}
if (mechanism.Equals("RIPEMD160WITHRSA/ISO9796-2"))
{
return new Iso9796d2Signer(new RsaBlindedEngine(), new RipeMD160Digest(), true);
}
throw new SecurityUtilityException("Signer " + algorithm + " not recognised.");
}
public static string GetEncodingName(
DerObjectIdentifier oid)
{
return (string) algorithms[oid.Id];
}
}
}
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