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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
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package org.bouncycastle.pqc.crypto.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.bouncycastle.asn1.ASN1BitString;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.bc.BCObjectIdentifiers;
import org.bouncycastle.asn1.nist.NISTObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.internal.asn1.isara.IsaraObjectIdentifiers;
import org.bouncycastle.pqc.asn1.CMCEPublicKey;
import org.bouncycastle.pqc.asn1.KyberPublicKey;
import org.bouncycastle.pqc.asn1.McElieceCCA2PublicKey;
import org.bouncycastle.pqc.asn1.PQCObjectIdentifiers;
import org.bouncycastle.pqc.asn1.SPHINCS256KeyParams;
import org.bouncycastle.pqc.asn1.XMSSKeyParams;
import org.bouncycastle.pqc.asn1.XMSSMTKeyParams;
import org.bouncycastle.pqc.asn1.XMSSPublicKey;
import org.bouncycastle.pqc.crypto.bike.BIKEParameters;
import org.bouncycastle.pqc.crypto.bike.BIKEPublicKeyParameters;
import org.bouncycastle.pqc.crypto.cmce.CMCEParameters;
import org.bouncycastle.pqc.crypto.cmce.CMCEPublicKeyParameters;
import org.bouncycastle.pqc.crypto.crystals.dilithium.DilithiumParameters;
import org.bouncycastle.pqc.crypto.crystals.dilithium.DilithiumPublicKeyParameters;
import org.bouncycastle.pqc.crypto.falcon.FalconParameters;
import org.bouncycastle.pqc.crypto.falcon.FalconPublicKeyParameters;
import org.bouncycastle.pqc.crypto.frodo.FrodoParameters;
import org.bouncycastle.pqc.crypto.frodo.FrodoPublicKeyParameters;
import org.bouncycastle.pqc.crypto.hqc.HQCParameters;
import org.bouncycastle.pqc.crypto.hqc.HQCPublicKeyParameters;
import org.bouncycastle.pqc.crypto.lms.HSSPublicKeyParameters;
import org.bouncycastle.pqc.crypto.lms.LMSPublicKeyParameters;
import org.bouncycastle.pqc.crypto.mldsa.MLDSAParameters;
import org.bouncycastle.pqc.crypto.mldsa.MLDSAPublicKeyParameters;
import org.bouncycastle.pqc.crypto.mlkem.MLKEMParameters;
import org.bouncycastle.pqc.crypto.mlkem.MLKEMPublicKeyParameters;
import org.bouncycastle.pqc.crypto.newhope.NHPublicKeyParameters;
import org.bouncycastle.pqc.crypto.ntru.NTRUParameters;
import org.bouncycastle.pqc.crypto.ntru.NTRUPublicKeyParameters;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimeParameters;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimePublicKeyParameters;
import org.bouncycastle.pqc.crypto.ntruprime.SNTRUPrimeParameters;
import org.bouncycastle.pqc.crypto.ntruprime.SNTRUPrimePublicKeyParameters;
import org.bouncycastle.pqc.crypto.picnic.PicnicParameters;
import org.bouncycastle.pqc.crypto.picnic.PicnicPublicKeyParameters;
import org.bouncycastle.pqc.crypto.rainbow.RainbowParameters;
import org.bouncycastle.pqc.crypto.rainbow.RainbowPublicKeyParameters;
import org.bouncycastle.pqc.crypto.saber.SABERParameters;
import org.bouncycastle.pqc.crypto.saber.SABERPublicKeyParameters;
import org.bouncycastle.pqc.crypto.slhdsa.SLHDSAParameters;
import org.bouncycastle.pqc.crypto.slhdsa.SLHDSAPublicKeyParameters;
import org.bouncycastle.pqc.crypto.sphincs.SPHINCSPublicKeyParameters;
import org.bouncycastle.pqc.crypto.sphincsplus.SPHINCSPlusParameters;
import org.bouncycastle.pqc.crypto.sphincsplus.SPHINCSPlusPublicKeyParameters;
import org.bouncycastle.pqc.crypto.xmss.XMSSMTParameters;
import org.bouncycastle.pqc.crypto.xmss.XMSSMTPublicKeyParameters;
import org.bouncycastle.pqc.crypto.xmss.XMSSParameters;
import org.bouncycastle.pqc.crypto.xmss.XMSSPublicKeyParameters;
import org.bouncycastle.pqc.legacy.crypto.mceliece.McElieceCCA2PublicKeyParameters;
import org.bouncycastle.pqc.legacy.crypto.qtesla.QTESLAPublicKeyParameters;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.Pack;
/**
* Factory to create asymmetric public key parameters for asymmetric ciphers from range of
* ASN.1 encoded SubjectPublicKeyInfo objects.
*/
public class PublicKeyFactory
{
private static Map converters = new HashMap();
static
{
converters.put(PQCObjectIdentifiers.qTESLA_p_I, new QTeslaConverter());
converters.put(PQCObjectIdentifiers.qTESLA_p_III, new QTeslaConverter());
converters.put(PQCObjectIdentifiers.sphincs256, new SPHINCSConverter());
converters.put(PQCObjectIdentifiers.newHope, new NHConverter());
converters.put(PQCObjectIdentifiers.xmss, new XMSSConverter());
converters.put(PQCObjectIdentifiers.xmss_mt, new XMSSMTConverter());
converters.put(IsaraObjectIdentifiers.id_alg_xmss, new XMSSConverter());
converters.put(IsaraObjectIdentifiers.id_alg_xmssmt, new XMSSMTConverter());
converters.put(PKCSObjectIdentifiers.id_alg_hss_lms_hashsig, new LMSConverter());
converters.put(PQCObjectIdentifiers.mcElieceCca2, new McElieceCCA2Converter());
converters.put(BCObjectIdentifiers.sphincsPlus, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_128s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_128f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_128s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_128f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_128s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_128f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_192s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_192f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_192s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_192f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_192s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_192f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_256s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_256f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_256s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_256f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_256s_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_256f_r3, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_128s_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_128f_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_192s_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_192f_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_256s_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_haraka_256f_r3_simple, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_128s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_128f, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_128s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_128f, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_192s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_192f, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_192s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_192f, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_256s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_sha2_256f, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_256s, new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.sphincsPlus_shake_256f, new SPHINCSPlusConverter());
converters.put(new ASN1ObjectIdentifier("1.3.9999.6.4.10"), new SPHINCSPlusConverter());
converters.put(BCObjectIdentifiers.mceliece348864_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece348864f_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece460896_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece460896f_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece6688128_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece6688128f_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece6960119_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece6960119f_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece8192128_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.mceliece8192128f_r3, new CMCEConverter());
converters.put(BCObjectIdentifiers.frodokem640aes, new FrodoConverter());
converters.put(BCObjectIdentifiers.frodokem640shake, new FrodoConverter());
converters.put(BCObjectIdentifiers.frodokem976aes, new FrodoConverter());
converters.put(BCObjectIdentifiers.frodokem976shake, new FrodoConverter());
converters.put(BCObjectIdentifiers.frodokem1344aes, new FrodoConverter());
converters.put(BCObjectIdentifiers.frodokem1344shake, new FrodoConverter());
converters.put(BCObjectIdentifiers.lightsaberkem128r3, new SABERConverter());
converters.put(BCObjectIdentifiers.saberkem128r3, new SABERConverter());
converters.put(BCObjectIdentifiers.firesaberkem128r3, new SABERConverter());
converters.put(BCObjectIdentifiers.lightsaberkem192r3, new SABERConverter());
converters.put(BCObjectIdentifiers.saberkem192r3, new SABERConverter());
converters.put(BCObjectIdentifiers.firesaberkem192r3, new SABERConverter());
converters.put(BCObjectIdentifiers.lightsaberkem256r3, new SABERConverter());
converters.put(BCObjectIdentifiers.saberkem256r3, new SABERConverter());
converters.put(BCObjectIdentifiers.firesaberkem256r3, new SABERConverter());
converters.put(BCObjectIdentifiers.ulightsaberkemr3, new SABERConverter());
converters.put(BCObjectIdentifiers.usaberkemr3, new SABERConverter());
converters.put(BCObjectIdentifiers.ufiresaberkemr3, new SABERConverter());
converters.put(BCObjectIdentifiers.lightsaberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.saberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.firesaberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.ulightsaberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.usaberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.ufiresaberkem90sr3, new SABERConverter());
converters.put(BCObjectIdentifiers.picnicl1fs, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl1ur, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl3fs, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl3ur, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl5fs, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl5ur, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnic3l1, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnic3l3, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnic3l5, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl1full, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl3full, new PicnicConverter());
converters.put(BCObjectIdentifiers.picnicl5full, new PicnicConverter());
converters.put(BCObjectIdentifiers.ntruhps2048509, new NtruConverter());
converters.put(BCObjectIdentifiers.ntruhps2048677, new NtruConverter());
converters.put(BCObjectIdentifiers.ntruhps4096821, new NtruConverter());
converters.put(BCObjectIdentifiers.ntruhps40961229, new NtruConverter());
converters.put(BCObjectIdentifiers.ntruhrss701, new NtruConverter());
converters.put(BCObjectIdentifiers.ntruhrss1373, new NtruConverter());
converters.put(BCObjectIdentifiers.falcon_512, new FalconConverter());
converters.put(BCObjectIdentifiers.falcon_1024, new FalconConverter());
converters.put(NISTObjectIdentifiers.id_alg_ml_kem_512, new KyberConverter());
converters.put(NISTObjectIdentifiers.id_alg_ml_kem_768, new KyberConverter());
converters.put(NISTObjectIdentifiers.id_alg_ml_kem_1024, new KyberConverter());
converters.put(BCObjectIdentifiers.kyber512_aes, new KyberConverter());
converters.put(BCObjectIdentifiers.kyber768_aes, new KyberConverter());
converters.put(BCObjectIdentifiers.kyber1024_aes, new KyberConverter());
converters.put(BCObjectIdentifiers.ntrulpr653, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.ntrulpr761, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.ntrulpr857, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.ntrulpr953, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.ntrulpr1013, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.ntrulpr1277, new NTRULPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup653, new SNTRUPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup761, new SNTRUPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup857, new SNTRUPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup953, new SNTRUPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup1013, new SNTRUPrimeConverter());
converters.put(BCObjectIdentifiers.sntrup1277, new SNTRUPrimeConverter());
converters.put(NISTObjectIdentifiers.id_ml_dsa_44, new MLDSAConverter());
converters.put(NISTObjectIdentifiers.id_ml_dsa_65, new MLDSAConverter());
converters.put(NISTObjectIdentifiers.id_ml_dsa_87, new MLDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_ml_dsa_44_with_sha512, new MLDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_ml_dsa_65_with_sha512, new MLDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_ml_dsa_87_with_sha512, new MLDSAConverter());
converters.put(BCObjectIdentifiers.dilithium2, new DilithiumConverter());
converters.put(BCObjectIdentifiers.dilithium3, new DilithiumConverter());
converters.put(BCObjectIdentifiers.dilithium5, new DilithiumConverter());
converters.put(BCObjectIdentifiers.dilithium2_aes, new DilithiumConverter());
converters.put(BCObjectIdentifiers.dilithium3_aes, new DilithiumConverter());
converters.put(BCObjectIdentifiers.dilithium5_aes, new DilithiumConverter());
converters.put(BCObjectIdentifiers.bike128, new BIKEConverter());
converters.put(BCObjectIdentifiers.bike192, new BIKEConverter());
converters.put(BCObjectIdentifiers.bike256, new BIKEConverter());
converters.put(BCObjectIdentifiers.hqc128, new HQCConverter());
converters.put(BCObjectIdentifiers.hqc192, new HQCConverter());
converters.put(BCObjectIdentifiers.hqc256, new HQCConverter());
converters.put(BCObjectIdentifiers.rainbow_III_classic, new RainbowConverter());
converters.put(BCObjectIdentifiers.rainbow_III_circumzenithal, new RainbowConverter());
converters.put(BCObjectIdentifiers.rainbow_III_compressed, new RainbowConverter());
converters.put(BCObjectIdentifiers.rainbow_V_classic, new RainbowConverter());
converters.put(BCObjectIdentifiers.rainbow_V_circumzenithal, new RainbowConverter());
converters.put(BCObjectIdentifiers.rainbow_V_compressed, new RainbowConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_128s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_128f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_192s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_192f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_256s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_sha2_256f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_128s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_128f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_192s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_192f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_256s, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_slh_dsa_shake_256f, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_128s_with_sha256, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_128f_with_sha256, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_192s_with_sha512, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_192f_with_sha512, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_256s_with_sha512, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_sha2_256f_with_sha512, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_128s_with_shake128, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_128f_with_shake128, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_192s_with_shake256, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_192f_with_shake256, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_256s_with_shake256, new SLHDSAConverter());
converters.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_256f_with_shake256, new SLHDSAConverter());
}
/**
* Create a public key from a SubjectPublicKeyInfo encoding
*
* @param keyInfoData the SubjectPublicKeyInfo encoding
* @return the appropriate key parameter
* @throws IOException on an error decoding the key
*/
public static AsymmetricKeyParameter createKey(byte[] keyInfoData)
throws IOException
{
if (keyInfoData == null)
{
throw new IllegalArgumentException("keyInfoData array null");
}
if (keyInfoData.length == 0)
{
throw new IllegalArgumentException("keyInfoData array empty");
}
return createKey(SubjectPublicKeyInfo.getInstance(ASN1Primitive.fromByteArray(keyInfoData)));
}
/**
* Create a public key from a SubjectPublicKeyInfo encoding read from a stream
*
* @param inStr the stream to read the SubjectPublicKeyInfo encoding from
* @return the appropriate key parameter
* @throws IOException on an error decoding the key
*/
public static AsymmetricKeyParameter createKey(InputStream inStr)
throws IOException
{
return createKey(SubjectPublicKeyInfo.getInstance(new ASN1InputStream(inStr).readObject()));
}
/**
* Create a public key from the passed in SubjectPublicKeyInfo
*
* @param keyInfo the SubjectPublicKeyInfo containing the key data
* @return the appropriate key parameter
* @throws IOException on an error decoding the key
*/
public static AsymmetricKeyParameter createKey(SubjectPublicKeyInfo keyInfo)
throws IOException
{
if (keyInfo == null)
{
throw new IllegalArgumentException("keyInfo argument null");
}
return createKey(keyInfo, null);
}
/**
* Create a public key from the passed in SubjectPublicKeyInfo
*
* @param keyInfo the SubjectPublicKeyInfo containing the key data
* @param defaultParams default parameters that might be needed.
* @return the appropriate key parameter
* @throws IOException on an error decoding the key
*/
public static AsymmetricKeyParameter createKey(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
if (keyInfo == null)
{
throw new IllegalArgumentException("keyInfo argument null");
}
AlgorithmIdentifier algId = keyInfo.getAlgorithm();
SubjectPublicKeyInfoConverter converter = (SubjectPublicKeyInfoConverter)converters.get(algId.getAlgorithm());
if (converter != null)
{
return converter.getPublicKeyParameters(keyInfo, defaultParams);
}
else
{
throw new IOException("algorithm identifier in public key not recognised: " + algId.getAlgorithm());
}
}
private static abstract class SubjectPublicKeyInfoConverter
{
abstract AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException;
}
private static class QTeslaConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
return new QTESLAPublicKeyParameters(Utils.qTeslaLookupSecurityCategory(keyInfo.getAlgorithm()), keyInfo.getPublicKeyData().getOctets());
}
}
private static class SPHINCSConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
return new SPHINCSPublicKeyParameters(keyInfo.getPublicKeyData().getBytes(),
Utils.sphincs256LookupTreeAlgName(SPHINCS256KeyParams.getInstance(keyInfo.getAlgorithm().getParameters())));
}
}
private static class NHConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
return new NHPublicKeyParameters(keyInfo.getPublicKeyData().getBytes());
}
}
private static class XMSSConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
XMSSKeyParams keyParams = XMSSKeyParams.getInstance(keyInfo.getAlgorithm().getParameters());
if (keyParams != null)
{
ASN1ObjectIdentifier treeDigest = keyParams.getTreeDigest().getAlgorithm();
XMSSPublicKey xmssPublicKey = XMSSPublicKey.getInstance(keyInfo.parsePublicKey());
return new XMSSPublicKeyParameters
.Builder(new XMSSParameters(keyParams.getHeight(), Utils.getDigest(treeDigest)))
.withPublicSeed(xmssPublicKey.getPublicSeed())
.withRoot(xmssPublicKey.getRoot()).build();
}
else
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
return new XMSSPublicKeyParameters
.Builder(XMSSParameters.lookupByOID(Pack.bigEndianToInt(keyEnc, 0)))
.withPublicKey(keyEnc).build();
}
}
}
private static class XMSSMTConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
XMSSMTKeyParams keyParams = XMSSMTKeyParams.getInstance(keyInfo.getAlgorithm().getParameters());
if (keyParams != null)
{
ASN1ObjectIdentifier treeDigest = keyParams.getTreeDigest().getAlgorithm();
XMSSPublicKey xmssMtPublicKey = XMSSPublicKey.getInstance(keyInfo.parsePublicKey());
return new XMSSMTPublicKeyParameters
.Builder(new XMSSMTParameters(keyParams.getHeight(), keyParams.getLayers(), Utils.getDigest(treeDigest)))
.withPublicSeed(xmssMtPublicKey.getPublicSeed())
.withRoot(xmssMtPublicKey.getRoot()).build();
}
else
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
return new XMSSMTPublicKeyParameters
.Builder(XMSSMTParameters.lookupByOID(Pack.bigEndianToInt(keyEnc, 0)))
.withPublicKey(keyEnc).build();
}
}
}
private static class LMSConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
if (Pack.bigEndianToInt(keyEnc, 0) == 1)
{
return LMSPublicKeyParameters.getInstance(Arrays.copyOfRange(keyEnc, 4, keyEnc.length));
}
else
{
// public key with extra tree height
if (keyEnc.length == 64)
{
keyEnc = Arrays.copyOfRange(keyEnc, 4, keyEnc.length);
}
return HSSPublicKeyParameters.getInstance(keyEnc);
}
}
}
private static class SPHINCSPlusConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
try
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
SPHINCSPlusParameters spParams = Utils.sphincsPlusParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SPHINCSPlusPublicKeyParameters(spParams, Arrays.copyOfRange(keyEnc, 4, keyEnc.length));
}
catch (Exception e)
{
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
SPHINCSPlusParameters spParams = Utils.sphincsPlusParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SPHINCSPlusPublicKeyParameters(spParams, keyEnc);
}
}
}
private static class CMCEConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
try
{
byte[] keyEnc = CMCEPublicKey.getInstance(keyInfo.parsePublicKey()).getT();
CMCEParameters spParams = Utils.mcElieceParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new CMCEPublicKeyParameters(spParams, keyEnc);
}
catch (Exception e)
{
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
CMCEParameters spParams = Utils.mcElieceParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new CMCEPublicKeyParameters(spParams, keyEnc);
}
}
}
private static class SABERConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(
ASN1Sequence.getInstance(keyInfo.parsePublicKey()).getObjectAt(0)).getOctets();
SABERParameters saberParams = Utils.saberParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SABERPublicKeyParameters(saberParams, keyEnc);
}
}
private static class McElieceCCA2Converter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
McElieceCCA2PublicKey mKey = McElieceCCA2PublicKey.getInstance(keyInfo.parsePublicKey());
return new McElieceCCA2PublicKeyParameters(mKey.getN(), mKey.getT(), mKey.getG(), Utils.getDigestName(mKey.getDigest().getAlgorithm()));
}
}
private static class FrodoConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
FrodoParameters fParams = Utils.frodoParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new FrodoPublicKeyParameters(fParams, keyEnc);
}
}
private static class PicnicConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
PicnicParameters picnicParams = Utils.picnicParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new PicnicPublicKeyParameters(picnicParams, keyEnc);
}
}
private static class NtruConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
NTRUParameters ntruParams = Utils.ntruParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new NTRUPublicKeyParameters(ntruParams, keyEnc);
}
}
private static class FalconConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
// FalconPublicKey falconPublicKey = FalconPublicKey.getInstance(keyInfo.parsePublicKey());
FalconParameters falconParams = Utils.falconParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new FalconPublicKeyParameters(falconParams, Arrays.copyOfRange(keyEnc, 1, keyEnc.length));
}
}
private static class KyberConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
MLKEMParameters kyberParameters = Utils.mlkemParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
try
{
ASN1Primitive obj = keyInfo.parsePublicKey();
KyberPublicKey kyberKey = KyberPublicKey.getInstance(obj);
return new MLKEMPublicKeyParameters(kyberParameters, kyberKey.getT(), kyberKey.getRho());
}
catch (Exception e)
{
// we're a raw encoding
return new MLKEMPublicKeyParameters(kyberParameters, keyInfo.getPublicKeyData().getOctets());
}
}
}
private static class NTRULPrimeConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
NTRULPRimeParameters ntruLPRimeParams = Utils.ntrulprimeParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new NTRULPRimePublicKeyParameters(ntruLPRimeParams, keyEnc);
}
}
private static class SNTRUPrimeConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
SNTRUPrimeParameters ntruLPRimeParams = Utils.sntruprimeParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SNTRUPrimePublicKeyParameters(ntruLPRimeParams, keyEnc);
}
}
static class DilithiumConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
DilithiumParameters dilithiumParams = Utils.dilithiumParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return getPublicKeyParams(dilithiumParams, keyInfo.getPublicKeyData());
}
static DilithiumPublicKeyParameters getPublicKeyParams(DilithiumParameters dilithiumParams, ASN1BitString publicKeyData)
{
try
{
ASN1Primitive obj = ASN1Primitive.fromByteArray(publicKeyData.getOctets());
if (obj instanceof ASN1Sequence)
{
ASN1Sequence keySeq = ASN1Sequence.getInstance(obj);
return new DilithiumPublicKeyParameters(dilithiumParams,
ASN1OctetString.getInstance(keySeq.getObjectAt(0)).getOctets(),
ASN1OctetString.getInstance(keySeq.getObjectAt(1)).getOctets());
}
else
{
byte[] encKey = ASN1OctetString.getInstance(obj).getOctets();
return new DilithiumPublicKeyParameters(dilithiumParams, encKey);
}
}
catch (Exception e)
{
// we're a raw encoding
return new DilithiumPublicKeyParameters(dilithiumParams, publicKeyData.getOctets());
}
}
}
static class MLDSAConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
MLDSAParameters dilithiumParams = Utils.mldsaParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return getPublicKeyParams(dilithiumParams, keyInfo.getPublicKeyData());
}
static MLDSAPublicKeyParameters getPublicKeyParams(MLDSAParameters dilithiumParams, ASN1BitString publicKeyData)
{
try
{
ASN1Primitive obj = ASN1Primitive.fromByteArray(publicKeyData.getOctets());
if (obj instanceof ASN1Sequence)
{
ASN1Sequence keySeq = ASN1Sequence.getInstance(obj);
return new MLDSAPublicKeyParameters(dilithiumParams,
ASN1OctetString.getInstance(keySeq.getObjectAt(0)).getOctets(),
ASN1OctetString.getInstance(keySeq.getObjectAt(1)).getOctets());
}
else
{
byte[] encKey = ASN1OctetString.getInstance(obj).getOctets();
return new MLDSAPublicKeyParameters(dilithiumParams, encKey);
}
}
catch (Exception e)
{
// we're a raw encoding
return new MLDSAPublicKeyParameters(dilithiumParams, publicKeyData.getOctets());
}
}
}
private static class BIKEConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
try
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
BIKEParameters bikeParams = Utils.bikeParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new BIKEPublicKeyParameters(bikeParams, keyEnc);
}
catch (Exception e)
{
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
BIKEParameters bikeParams = Utils.bikeParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new BIKEPublicKeyParameters(bikeParams, keyEnc);
}
}
}
private static class HQCConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
try
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
HQCParameters hqcParams = Utils.hqcParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new HQCPublicKeyParameters(hqcParams, keyEnc);
}
catch (Exception e)
{
// raw encoding
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
HQCParameters hqcParams = Utils.hqcParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new HQCPublicKeyParameters(hqcParams, keyEnc);
}
}
}
private static class SLHDSAConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
try
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
SLHDSAParameters spParams = Utils.slhdsaParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SLHDSAPublicKeyParameters(spParams, Arrays.copyOfRange(keyEnc, 4, keyEnc.length));
}
catch (Exception e)
{
byte[] keyEnc = keyInfo.getPublicKeyData().getOctets();
SLHDSAParameters spParams = Utils.slhdsaParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new SLHDSAPublicKeyParameters(spParams, keyEnc);
}
}
}
private static class RainbowConverter
extends SubjectPublicKeyInfoConverter
{
AsymmetricKeyParameter getPublicKeyParameters(SubjectPublicKeyInfo keyInfo, Object defaultParams)
throws IOException
{
byte[] keyEnc = ASN1OctetString.getInstance(keyInfo.parsePublicKey()).getOctets();
RainbowParameters rainbowParams = Utils.rainbowParamsLookup(keyInfo.getAlgorithm().getAlgorithm());
return new RainbowPublicKeyParameters(rainbowParams, keyEnc);
}
}
}
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