Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/DH.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric;

import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.jcajce.provider.asymmetric.dh.KeyFactorySpi;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.util.AsymmetricAlgorithmProvider;

public class DH
{
    private static final String PREFIX = "org.bouncycastle.jcajce.provider.asymmetric" + ".dh.";

    public static class Mappings
        extends AsymmetricAlgorithmProvider
    {
        public Mappings()
        {
        }

        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("KeyPairGenerator.DH", PREFIX + "KeyPairGeneratorSpi");
            provider.addAlgorithm("Alg.Alias.KeyPairGenerator.DIFFIEHELLMAN", "DH");

            provider.addAlgorithm("KeyAgreement.DH", PREFIX + "KeyAgreementSpi");
            provider.addAlgorithm("Alg.Alias.KeyAgreement.DIFFIEHELLMAN", "DH");
            provider.addAlgorithm("KeyAgreement", PKCSObjectIdentifiers.id_alg_ESDH, PREFIX + "KeyAgreementSpi$DHwithRFC2631KDF");
            provider.addAlgorithm("KeyAgreement", PKCSObjectIdentifiers.id_alg_SSDH, PREFIX + "KeyAgreementSpi$DHwithRFC2631KDF");

            provider.addAlgorithm("KeyFactory.DH", PREFIX + "KeyFactorySpi");
            provider.addAlgorithm("Alg.Alias.KeyFactory.DIFFIEHELLMAN", "DH");

            provider.addAlgorithm("AlgorithmParameters.DH", PREFIX + "AlgorithmParametersSpi");
            provider.addAlgorithm("Alg.Alias.AlgorithmParameters.DIFFIEHELLMAN", "DH");

            provider.addAlgorithm("Alg.Alias.AlgorithmParameterGenerator.DIFFIEHELLMAN", "DH");

            provider.addAlgorithm("AlgorithmParameterGenerator.DH", PREFIX + "AlgorithmParameterGeneratorSpi");

            provider.addAlgorithm("Cipher.IES", PREFIX + "IESCipher$IES");
            provider.addAlgorithm("Cipher.IESwithAES", PREFIX + "IESCipher$IESwithAES");
            provider.addAlgorithm("Cipher.IESWITHAES", PREFIX + "IESCipher$IESwithAES");
            provider.addAlgorithm("Cipher.IESWITHDESEDE", PREFIX + "IESCipher$IESwithDESede");

            provider.addAlgorithm("Cipher.DHIES", PREFIX + "IESCipher$IES");
            provider.addAlgorithm("Cipher.DHIESwithAES", PREFIX + "IESCipher$IESwithAES");
            provider.addAlgorithm("Cipher.DHIESWITHAES", PREFIX + "IESCipher$IESwithAES");
            provider.addAlgorithm("Cipher.DHIESWITHDESEDE", PREFIX + "IESCipher$IESwithDESede");

            provider.addAlgorithm("Cipher.OLDDHIES", PREFIX + "IESCipher$OldIES");
            provider.addAlgorithm("Cipher.OLDDHIESwithAES", PREFIX + "IESCipher$OldIESwithAES");
            provider.addAlgorithm("Cipher.OLDDHIESWITHAES", PREFIX + "IESCipher$OldIESwithAES");
            provider.addAlgorithm("Cipher.OLDDHIESWITHDESEDE", PREFIX + "IESCipher$OldIESwithDESede");

            registerOid(provider, PKCSObjectIdentifiers.dhKeyAgreement, "DH", new KeyFactorySpi());
            registerOid(provider, X9ObjectIdentifiers.dhpublicnumber, "DH", new KeyFactorySpi());
        }
    }
}

## 内容2
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/EC.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric;

import org.bouncycastle.asn1.bsi.BSIObjectIdentifiers;
import org.bouncycastle.asn1.eac.EACObjectIdentifiers;
import org.bouncycastle.asn1.nist.NISTObjectIdentifiers;
import org.bouncycastle.asn1.sec.SECObjectIdentifiers;
import org.bouncycastle.asn1.teletrust.TeleTrusTObjectIdentifiers;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.jcajce.provider.asymmetric.ec.KeyFactorySpi;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.util.AsymmetricAlgorithmProvider;
import org.bouncycastle.util.Properties;

public class EC
{
    private static final String PREFIX = "org.bouncycastle.jcajce.provider.asymmetric" + ".ec.";

    public static class Mappings
        extends AsymmetricAlgorithmProvider
    {
        public Mappings()
        {
        }

        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("AlgorithmParameters.EC", PREFIX + "AlgorithmParametersSpi");

            provider.addAlgorithm("KeyAgreement.ECDH", PREFIX + "KeyAgreementSpi$DH");
            provider.addAlgorithm("KeyAgreement.ECDHC", PREFIX + "KeyAgreementSpi$DHC");
            provider.addAlgorithm("KeyAgreement.ECCDH", PREFIX + "KeyAgreementSpi$DHC");

            provider.addAlgorithm("KeyAgreement." + X9ObjectIdentifiers.dhSinglePass_stdDH_sha1kdf_scheme, PREFIX + "KeyAgreementSpi$DHwithSHA1KDFAndSharedInfo");
            provider.addAlgorithm("KeyAgreement." + X9ObjectIdentifiers.dhSinglePass_cofactorDH_sha1kdf_scheme, PREFIX + "KeyAgreementSpi$CDHwithSHA1KDFAndSharedInfo");

            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_stdDH_sha224kdf_scheme, PREFIX + "KeyAgreementSpi$DHwithSHA224KDFAndSharedInfo");
            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_cofactorDH_sha224kdf_scheme, PREFIX + "KeyAgreementSpi$CDHwithSHA224KDFAndSharedInfo");

            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_stdDH_sha256kdf_scheme, PREFIX + "KeyAgreementSpi$DHwithSHA256KDFAndSharedInfo");
            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_cofactorDH_sha256kdf_scheme, PREFIX + "KeyAgreementSpi$CDHwithSHA256KDFAndSharedInfo");

            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_stdDH_sha384kdf_scheme, PREFIX + "KeyAgreementSpi$DHwithSHA384KDFAndSharedInfo");
            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_cofactorDH_sha384kdf_scheme, PREFIX + "KeyAgreementSpi$CDHwithSHA384KDFAndSharedInfo");

            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_stdDH_sha512kdf_scheme, PREFIX + "KeyAgreementSpi$DHwithSHA512KDFAndSharedInfo");
            provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.dhSinglePass_cofactorDH_sha512kdf_scheme, PREFIX + "KeyAgreementSpi$CDHwithSHA512KDFAndSharedInfo");

            provider.addAlgorithm("KeyAgreement.ECDHWITHSHA1KDF", PREFIX + "KeyAgreementSpi$DHwithSHA1KDF");

            provider.addAlgorithm("KeyAgreement.ECCDHWITHSHA1CKDF", PREFIX + "KeyAgreementSpi$DHwithSHA1CKDF");
            provider.addAlgorithm("KeyAgreement.ECCDHWITHSHA256CKDF", PREFIX + "KeyAgreementSpi$DHwithSHA256CKDF");
            provider.addAlgorithm("KeyAgreement.ECCDHWITHSHA384CKDF", PREFIX + "KeyAgreementSpi$DHwithSHA384CKDF");
            provider.addAlgorithm("KeyAgreement.ECCDHWITHSHA512CKDF", PREFIX + "KeyAgreementSpi$DHwithSHA512CKDF");

            registerOid(provider, X9ObjectIdentifiers.id_ecPublicKey, "EC", new KeyFactorySpi.EC());

            registerOid(provider, X9ObjectIdentifiers.dhSinglePass_cofactorDH_sha1kdf_scheme, "EC", new KeyFactorySpi.EC());
            registerOid(provider, X9ObjectIdentifiers.mqvSinglePass_sha1kdf_scheme, "ECMQV", new KeyFactorySpi.ECMQV());

            registerOid(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha224kdf_scheme, "EC", new KeyFactorySpi.EC());
            registerOid(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha224kdf_scheme, "EC", new KeyFactorySpi.EC());

            registerOid(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha256kdf_scheme, "EC", new KeyFactorySpi.EC());
            registerOid(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha256kdf_scheme, "EC", new KeyFactorySpi.EC());

            registerOid(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha384kdf_scheme, "EC", new KeyFactorySpi.EC());
            registerOid(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha384kdf_scheme, "EC", new KeyFactorySpi.EC());

            registerOid(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha512kdf_scheme, "EC", new KeyFactorySpi.EC());
            registerOid(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha512kdf_scheme, "EC", new KeyFactorySpi.EC());

            registerOidAlgorithmParameters(provider, X9ObjectIdentifiers.id_ecPublicKey, "EC");

            registerOidAlgorithmParameters(provider, X9ObjectIdentifiers.dhSinglePass_stdDH_sha1kdf_scheme, "EC");
            registerOidAlgorithmParameters(provider, X9ObjectIdentifiers.dhSinglePass_cofactorDH_sha1kdf_scheme, "EC");

            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha224kdf_scheme, "EC");
            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha224kdf_scheme, "EC");

            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha256kdf_scheme, "EC");
            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha256kdf_scheme, "EC");

            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha384kdf_scheme, "EC");
            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha384kdf_scheme, "EC");

            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_stdDH_sha512kdf_scheme, "EC");
            registerOidAlgorithmParameters(provider, SECObjectIdentifiers.dhSinglePass_cofactorDH_sha512kdf_scheme, "EC");

            if (!Properties.isOverrideSet("org.bouncycastle.ec.disable_mqv"))
            {
                provider.addAlgorithm("KeyAgreement.ECMQV", PREFIX + "KeyAgreementSpi$MQV");

                provider.addAlgorithm("KeyAgreement.ECMQVWITHSHA1CKDF", PREFIX + "KeyAgreementSpi$MQVwithSHA1CKDF");
                provider.addAlgorithm("KeyAgreement.ECMQVWITHSHA224CKDF", PREFIX + "KeyAgreementSpi$MQVwithSHA224CKDF");
                provider.addAlgorithm("KeyAgreement.ECMQVWITHSHA256CKDF", PREFIX + "KeyAgreementSpi$MQVwithSHA256CKDF");
                provider.addAlgorithm("KeyAgreement.ECMQVWITHSHA384CKDF", PREFIX + "KeyAgreementSpi$MQVwithSHA384CKDF");
                provider.addAlgorithm("KeyAgreement.ECMQVWITHSHA512CKDF", PREFIX + "KeyAgreementSpi$MQVwithSHA512CKDF");

                provider.addAlgorithm("KeyAgreement." + X9ObjectIdentifiers.mqvSinglePass_sha1kdf_scheme, PREFIX + "KeyAgreementSpi$MQVwithSHA1KDFAndSharedInfo");
                provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.mqvSinglePass_sha224kdf_scheme, PREFIX + "KeyAgreementSpi$MQVwithSHA224KDFAndSharedInfo");
                provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.mqvSinglePass_sha256kdf_scheme, PREFIX + "KeyAgreementSpi$MQVwithSHA256KDFAndSharedInfo");
                provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.mqvSinglePass_sha384kdf_scheme, PREFIX + "KeyAgreementSpi$MQVwithSHA384KDFAndSharedInfo");
                provider.addAlgorithm("KeyAgreement." + SECObjectIdentifiers.mqvSinglePass_sha512kdf_scheme, PREFIX + "KeyAgreementSpi$MQVwithSHA512KDFAndSharedInfo");

                registerOid(provider, X9ObjectIdentifiers.dhSinglePass_stdDH_sha1kdf_scheme, "EC", new KeyFactorySpi.EC());
                registerOidAlgorithmParameters(provider, X9ObjectIdentifiers.mqvSinglePass_sha1kdf_scheme, "EC");

                registerOid(provider, SECObjectIdentifiers.mqvSinglePass_sha224kdf_scheme, "ECMQV", new KeyFactorySpi.ECMQV());
                registerOidAlgorithmParameters(provider, SECObjectIdentifiers.mqvSinglePass_sha256kdf_scheme, "EC");

                registerOid(provider, SECObjectIdentifiers.mqvSinglePass_sha256kdf_scheme, "ECMQV", new KeyFactorySpi.ECMQV());
                registerOidAlgorithmParameters(provider, SECObjectIdentifiers.mqvSinglePass_sha224kdf_scheme, "EC");

                registerOid(provider, SECObjectIdentifiers.mqvSinglePass_sha384kdf_scheme, "ECMQV", new KeyFactorySpi.ECMQV());
                registerOidAlgorithmParameters(provider, SECObjectIdentifiers.mqvSinglePass_sha384kdf_scheme, "EC");

                registerOid(provider, SECObjectIdentifiers.mqvSinglePass_sha512kdf_scheme, "ECMQV", new KeyFactorySpi.ECMQV());
                registerOidAlgorithmParameters(provider, SECObjectIdentifiers.mqvSinglePass_sha512kdf_scheme, "EC");

                provider.addAlgorithm("KeyFactory.ECMQV", PREFIX + "KeyFactorySpi$ECMQV");
                provider.addAlgorithm("KeyPairGenerator.ECMQV", PREFIX + "KeyPairGeneratorSpi$ECMQV");
            }

            provider.addAlgorithm("KeyFactory.EC", PREFIX + "KeyFactorySpi$EC");
            provider.addAlgorithm("KeyFactory.ECDSA", PREFIX + "KeyFactorySpi$ECDSA");
            provider.addAlgorithm("KeyFactory.ECDH", PREFIX + "KeyFactorySpi$ECDH");
            provider.addAlgorithm("KeyFactory.ECDHC", PREFIX + "KeyFactorySpi$ECDHC");

            provider.addAlgorithm("KeyPairGenerator.EC", PREFIX + "KeyPairGeneratorSpi$EC");
            provider.addAlgorithm("KeyPairGenerator.ECDSA", PREFIX + "KeyPairGeneratorSpi$ECDSA");
            provider.addAlgorithm("KeyPairGenerator.ECDH", PREFIX + "KeyPairGeneratorSpi$ECDH");
            provider.addAlgorithm("KeyPairGenerator.ECDHWITHSHA1KDF", PREFIX + "KeyPairGeneratorSpi$ECDH");
            provider.addAlgorithm("KeyPairGenerator.ECDHC", PREFIX + "KeyPairGeneratorSpi$ECDHC");
            provider.addAlgorithm("KeyPairGenerator.ECIES", PREFIX + "KeyPairGeneratorSpi$ECDH");

            provider.addAlgorithm("Cipher.ECIES", PREFIX + "IESCipher$ECIES");
            provider.addAlgorithm("Cipher.ECIESwithAES", PREFIX + "IESCipher$ECIESwithAES");
            provider.addAlgorithm("Cipher.ECIESWITHAES", PREFIX + "IESCipher$ECIESwithAES");
            provider.addAlgorithm("Cipher.ECIESwithDESEDE", PREFIX + "IESCipher$ECIESwithDESede");
            provider.addAlgorithm("Cipher.ECIESWITHDESEDE", PREFIX + "IESCipher$ECIESwithDESede");
            provider.addAlgorithm("Cipher.ECIESwithAES-CBC", PREFIX + "IESCipher$ECIESwithAESCBC");
            provider.addAlgorithm("Cipher.ECIESWITHAES-CBC", PREFIX + "IESCipher$ECIESwithAESCBC");
            provider.addAlgorithm("Cipher.ECIESwithDESEDE-CBC", PREFIX + "IESCipher$ECIESwithDESedeCBC");
            provider.addAlgorithm("Cipher.ECIESWITHDESEDE-CBC", PREFIX + "IESCipher$ECIESwithDESedeCBC");

            provider.addAlgorithm("Cipher.OldECIES", PREFIX + "IESCipher$OldECIES");
            provider.addAlgorithm("Cipher.OldECIESwithAES", PREFIX + "IESCipher$OldECIESwithAES");
            provider.addAlgorithm("Cipher.OldECIESWITHAES", PREFIX + "IESCipher$OldECIESwithAES");
            provider.addAlgorithm("Cipher.OldECIESwithDESEDE", PREFIX + "IESCipher$OldECIESwithDESede");
            provider.addAlgorithm("Cipher.OldECIESWITHDESEDE", PREFIX + "IESCipher$OldECIESwithDESede");
            provider.addAlgorithm("Cipher.OldECIESwithAES-CBC", PREFIX + "IESCipher$OldECIESwithAESCBC");
            provider.addAlgorithm("Cipher.OldECIESWITHAES-CBC", PREFIX + "IESCipher$OldECIESwithAESCBC");
            provider.addAlgorithm("Cipher.OldECIESwithDESEDE-CBC", PREFIX + "IESCipher$OldECIESwithDESedeCBC");
            provider.addAlgorithm("Cipher.OldECIESWITHDESEDE-CBC", PREFIX + "IESCipher$OldECIESwithDESedeCBC");

            provider.addAlgorithm("Signature.ECDSA", PREFIX + "SignatureSpi$ecDSA");
            provider.addAlgorithm("Signature.NONEwithECDSA", PREFIX + "SignatureSpi$ecDSAnone");

            provider.addAlgorithm("Alg.Alias.Signature.SHA1withECDSA", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.ECDSAwithSHA1", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA1WITHECDSA", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.ECDSAWITHSHA1", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA1WithECDSA", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.ECDSAWithSHA1", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature.1.2.840.10045.4.1", "ECDSA");
            provider.addAlgorithm("Alg.Alias.Signature." + TeleTrusTObjectIdentifiers.ecSignWithSha1, "ECDSA");

            provider.addAlgorithm("Signature.ECDDSA", PREFIX + "SignatureSpi$ecDetDSA");
            provider.addAlgorithm("Signature.SHA1WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSA");
            provider.addAlgorithm("Signature.SHA224WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSA224");
            provider.addAlgorithm("Signature.SHA256WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSA256");
            provider.addAlgorithm("Signature.SHA384WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSA384");
            provider.addAlgorithm("Signature.SHA512WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSA512");
            provider.addAlgorithm("Signature.SHA3-224WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSASha3_224");
            provider.addAlgorithm("Signature.SHA3-256WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSASha3_256");
            provider.addAlgorithm("Signature.SHA3-384WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSASha3_384");
            provider.addAlgorithm("Signature.SHA3-512WITHECDDSA", PREFIX + "SignatureSpi$ecDetDSASha3_512");

            provider.addAlgorithm("Alg.Alias.Signature.DETECDSA", "ECDDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA1WITHDETECDSA", "SHA1WITHECDDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA224WITHDETECDSA", "SHA224WITHECDDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA256WITHDETECDSA", "SHA256WITHECDDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA384WITHDETECDSA", "SHA384WITHECDDSA");
            provider.addAlgorithm("Alg.Alias.Signature.SHA512WITHDETECDSA", "SHA512WITHECDDSA");

            addSignatureAlgorithm(provider, "SHA224", "ECDSA", PREFIX + "SignatureSpi$ecDSA224", X9ObjectIdentifiers.ecdsa_with_SHA224);
            addSignatureAlgorithm(provider, "SHA256", "ECDSA", PREFIX + "SignatureSpi$ecDSA256", X9ObjectIdentifiers.ecdsa_with_SHA256);
            addSignatureAlgorithm(provider, "SHA384", "ECDSA", PREFIX + "SignatureSpi$ecDSA384", X9ObjectIdentifiers.ecdsa_with_SHA384);
            addSignatureAlgorithm(provider, "SHA512", "ECDSA", PREFIX + "SignatureSpi$ecDSA512", X9ObjectIdentifiers.ecdsa_with_SHA512);
            addSignatureAlgorithm(provider, "SHA3-224", "ECDSA", PREFIX + "SignatureSpi$ecDSASha3_224", NISTObjectIdentifiers.id_ecdsa_with_sha3_224);
            addSignatureAlgorithm(provider, "SHA3-256", "ECDSA", PREFIX + "SignatureSpi$ecDSASha3_256", NISTObjectIdentifiers.id_ecdsa_with_sha3_256);
            addSignatureAlgorithm(provider, "SHA3-384", "ECDSA", PREFIX + "SignatureSpi$ecDSASha3_384", NISTObjectIdentifiers.id_ecdsa_with_sha3_384);
            addSignatureAlgorithm(provider, "SHA3-512", "ECDSA", PREFIX + "SignatureSpi$ecDSASha3_512", NISTObjectIdentifiers.id_ecdsa_with_sha3_512);

            addSignatureAlgorithm(provider, "RIPEMD160", "ECDSA", PREFIX + "SignatureSpi$ecDSARipeMD160",TeleTrusTObjectIdentifiers.ecSignWithRipemd160);

            provider.addAlgorithm("Signature.SHA1WITHECNR", PREFIX + "SignatureSpi$ecNR");
            provider.addAlgorithm("Signature.SHA224WITHECNR", PREFIX + "SignatureSpi$ecNR224");
            provider.addAlgorithm("Signature.SHA256WITHECNR", PREFIX + "SignatureSpi$ecNR256");
            provider.addAlgorithm("Signature.SHA384WITHECNR", PREFIX + "SignatureSpi$ecNR384");
            provider.addAlgorithm("Signature.SHA512WITHECNR", PREFIX + "SignatureSpi$ecNR512");

            addSignatureAlgorithm(provider, "SHA1", "CVC-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA", EACObjectIdentifiers.id_TA_ECDSA_SHA_1);
            addSignatureAlgorithm(provider, "SHA224", "CVC-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA224", EACObjectIdentifiers.id_TA_ECDSA_SHA_224);
            addSignatureAlgorithm(provider, "SHA256", "CVC-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA256", EACObjectIdentifiers.id_TA_ECDSA_SHA_256);
            addSignatureAlgorithm(provider, "SHA384", "CVC-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA384", EACObjectIdentifiers.id_TA_ECDSA_SHA_384);
            addSignatureAlgorithm(provider, "SHA512", "CVC-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA512", EACObjectIdentifiers.id_TA_ECDSA_SHA_512);

            addSignatureAlgorithm(provider, "SHA1", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA", BSIObjectIdentifiers.ecdsa_plain_SHA1);
            addSignatureAlgorithm(provider, "SHA224", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA224", BSIObjectIdentifiers.ecdsa_plain_SHA224);
            addSignatureAlgorithm(provider, "SHA256", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA256", BSIObjectIdentifiers.ecdsa_plain_SHA256);
            addSignatureAlgorithm(provider, "SHA384", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA384", BSIObjectIdentifiers.ecdsa_plain_SHA384);
            addSignatureAlgorithm(provider, "SHA512", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecCVCDSA512", BSIObjectIdentifiers.ecdsa_plain_SHA512);
            addSignatureAlgorithm(provider, "RIPEMD160", "PLAIN-ECDSA", PREFIX + "SignatureSpi$ecPlainDSARP160", BSIObjectIdentifiers.ecdsa_plain_RIPEMD160);
        }
    }
}

## 内容3
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dh/IESCipher.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric.dh;

import java.io.ByteArrayOutputStream;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherSpi;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.ShortBufferException;
import javax.crypto.interfaces.DHKey;
import javax.crypto.interfaces.DHPrivateKey;
import javax.crypto.interfaces.DHPublicKey;

import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.KeyEncoder;
import org.bouncycastle.crypto.agreement.DHBasicAgreement;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.engines.DESedeEngine;
import org.bouncycastle.crypto.engines.IESEngine;
import org.bouncycastle.crypto.engines.OldIESEngine;
import org.bouncycastle.crypto.generators.DHKeyPairGenerator;
import org.bouncycastle.crypto.generators.EphemeralKeyPairGenerator;
import org.bouncycastle.crypto.generators.KDF2BytesGenerator;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.DHKeyGenerationParameters;
import org.bouncycastle.crypto.params.DHKeyParameters;
import org.bouncycastle.crypto.params.DHParameters;
import org.bouncycastle.crypto.params.DHPublicKeyParameters;
import org.bouncycastle.crypto.params.IESParameters;
import org.bouncycastle.crypto.params.IESWithCipherParameters;
import org.bouncycastle.crypto.parsers.DHIESPublicKeyParser;
import org.bouncycastle.jcajce.provider.asymmetric.util.DHUtil;
import org.bouncycastle.jcajce.provider.asymmetric.util.IESUtil;
import org.bouncycastle.jcajce.util.BCJcaJceHelper;
import org.bouncycastle.jcajce.util.JcaJceHelper;
import org.bouncycastle.jce.interfaces.IESKey;
import org.bouncycastle.jce.spec.IESParameterSpec;
import org.bouncycastle.util.BigIntegers;
import org.bouncycastle.util.Strings;

public class IESCipher
    extends CipherSpi
{
    private final JcaJceHelper helper = new BCJcaJceHelper();

    private IESEngine engine;
    private int state = -1;
    private ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    private AlgorithmParameters engineParam = null;
    private IESParameterSpec engineSpec = null;
    private AsymmetricKeyParameter key;
    private SecureRandom random;
    private boolean dhaesMode = false;
    private AsymmetricKeyParameter otherKeyParameter = null;

    public IESCipher(IESEngine engine)
    {
        this.engine = engine;
    }

    public IESCipher(OldIESEngine engine)
    {
        this.engine = engine;
    }

    public int engineGetBlockSize()
    {
        if (engine.getCipher() != null)
        {
            return engine.getCipher().getBlockSize();
        }
        else
        {
            return 0;
        }
    }

    public int engineGetKeySize(Key key)
    {
        if (key instanceof DHKey)
        {
            return ((DHKey)key).getParams().getP().bitLength();
        }
        else
        {
            throw new IllegalArgumentException("not a DH key");
        }
    }

    public byte[] engineGetIV()
    {
        return null;
    }

    public AlgorithmParameters engineGetParameters()
    {
        if (engineParam == null && engineSpec != null)
        {
            try
            {
                engineParam = helper.createAlgorithmParameters("IES");
                engineParam.init(engineSpec);
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.toString());
            }
        }

        return engineParam;
    }

    public void engineSetMode(String mode)
        throws NoSuchAlgorithmException
    {
        String modeName = Strings.toUpperCase(mode);

        if (modeName.equals("NONE"))
        {
            dhaesMode = false;
        }
        else if (modeName.equals("DHAES"))
        {
            dhaesMode = true;
        }
        else
        {
            throw new IllegalArgumentException("can't support mode " + mode);
        }
    }

    public int engineGetOutputSize(int inputLen)
    {
        int len1, len2, len3;

        if (key == null)
        {
            throw new IllegalStateException("cipher not initialised");
        }

        len1 = engine.getMac().getMacSize();

        if (otherKeyParameter == null)
        {
            len2 = 1 + 2 * (((DHKeyParameters)key).getParameters().getP().bitLength() + 7) / 8;
        }
        else
        {
            len2 = 0;
        }

        if (engine.getCipher() == null)
        {
            len3 = inputLen;
        }
        else if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            len3 = engine.getCipher().getOutputSize(inputLen);
        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            len3 = engine.getCipher().getOutputSize(inputLen - len1 - len2);
        }
        else
        {
            throw new IllegalStateException("cipher not initialised");
        }

        if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            return buffer.size() + len1 + len2 + len3;
        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            return buffer.size() - len1 - len2 + len3;
        }
        else
        {
            throw new IllegalStateException("IESCipher not initialised");
        }

    }

    public void engineSetPadding(String padding)
        throws NoSuchPaddingException
    {
        String paddingName = Strings.toUpperCase(padding);

        // TDOD: make this meaningful...
        if (paddingName.equals("NOPADDING"))
        {

        }
        else if (paddingName.equals("PKCS5PADDING") || paddingName.equals("PKCS7PADDING"))
        {

        }
        else
        {
            throw new NoSuchPaddingException("padding not available with IESCipher");
        }
    }

    // Initialisation methods

    public void engineInit(
        int opmode,
        Key key,
        AlgorithmParameters params,
        SecureRandom random)
        throws InvalidKeyException, InvalidAlgorithmParameterException
    {
        AlgorithmParameterSpec paramSpec = null;

        if (params != null)
        {
            try
            {
                paramSpec = params.getParameterSpec(IESParameterSpec.class);
            }
            catch (Exception e)
            {
                throw new InvalidAlgorithmParameterException("cannot recognise parameters: " + e.toString());
            }
        }

        engineParam = params;
        engineInit(opmode, key, paramSpec, random);
    }

    public void engineInit(
        int opmode,
        Key key,
        AlgorithmParameterSpec engineSpec,
        SecureRandom random)
        throws InvalidAlgorithmParameterException, InvalidKeyException
    {
        // Use default parameters (including cipher key size) if none are specified
        if (engineSpec == null)
        {
            this.engineSpec = IESUtil.guessParameterSpec(engine.getCipher());
        }
        else if (engineSpec instanceof IESParameterSpec)
        {
            this.engineSpec = (IESParameterSpec)engineSpec;
        }
        else
        {
            throw new InvalidAlgorithmParameterException("must be passed IES parameters");
        }

        // Parse the recipient's key
        if (opmode == Cipher.ENCRYPT_MODE || opmode == Cipher.WRAP_MODE)
        {
            if (key instanceof DHPublicKey)
            {
                this.key = DHUtil.generatePublicKeyParameter((PublicKey)key);
            }
            else if (key instanceof IESKey)
            {
                IESKey ieKey = (IESKey)key;

                this.key = DHUtil.generatePublicKeyParameter(ieKey.getPublic());
                this.otherKeyParameter = DHUtil.generatePrivateKeyParameter(ieKey.getPrivate());
            }
            else
            {
                throw new InvalidKeyException("must be passed recipient's public DH key for encryption");
            }
        }
        else if (opmode == Cipher.DECRYPT_MODE || opmode == Cipher.UNWRAP_MODE)
        {
            if (key instanceof DHPrivateKey)
            {
                this.key = DHUtil.generatePrivateKeyParameter((PrivateKey)key);
            }
            else if (key instanceof IESKey)
            {
                IESKey ieKey = (IESKey)key;

                this.otherKeyParameter = DHUtil.generatePublicKeyParameter(ieKey.getPublic());
                this.key = DHUtil.generatePrivateKeyParameter(ieKey.getPrivate());
            }
            else
            {
                throw new InvalidKeyException("must be passed recipient's private DH key for decryption");
            }
        }
        else
        {
            throw new InvalidKeyException("must be passed EC key");
        }

        this.random = random;
        this.state = opmode;
        buffer.reset();

    }

    public void engineInit(
        int opmode,
        Key key,
        SecureRandom random)
        throws InvalidKeyException
    {
        try
        {
            engineInit(opmode, key, (AlgorithmParameterSpec)null, random);
        }
        catch (InvalidAlgorithmParameterException e)
        {
            throw new IllegalArgumentException("can't handle supplied parameter spec");
        }

    }

    // Update methods - buffer the input

    public byte[] engineUpdate(
        byte[] input,
        int inputOffset,
        int inputLen)
    {
        buffer.write(input, inputOffset, inputLen);
        return null;
    }

    public int engineUpdate(
        byte[] input,
        int inputOffset,
        int inputLen,
        byte[] output,
        int outputOffset)
    {
        buffer.write(input, inputOffset, inputLen);
        return 0;
    }

    // Finalisation methods

    public byte[] engineDoFinal(
        byte[] input,
        int inputOffset,
        int inputLen)
        throws IllegalBlockSizeException, BadPaddingException
    {
        if (inputLen != 0)
        {
            buffer.write(input, inputOffset, inputLen);
        }

        byte[] in = buffer.toByteArray();
        buffer.reset();

        // Convert parameters for use in IESEngine
        IESParameters params = new IESWithCipherParameters(engineSpec.getDerivationV(),
            engineSpec.getEncodingV(),
            engineSpec.getMacKeySize(),
            engineSpec.getCipherKeySize());

        DHParameters dhParams = ((DHKeyParameters)key).getParameters();

        byte[] V;
        if (otherKeyParameter != null)
        {
            try
            {
                if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
                {
                    engine.init(true, otherKeyParameter, key, params);
                }
                else
                {
                    engine.init(false, key, otherKeyParameter, params);
                }
                return engine.processBlock(in, 0, in.length);
            }
            catch (Exception e)
            {
                throw new BadPaddingException(e.getMessage());
            }
        }

        if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            // Generate the ephemeral key pair
            DHKeyPairGenerator gen = new DHKeyPairGenerator();
            gen.init(new DHKeyGenerationParameters(random, dhParams));

            EphemeralKeyPairGenerator kGen = new EphemeralKeyPairGenerator(gen, new KeyEncoder()
            {
                public byte[] getEncoded(AsymmetricKeyParameter keyParameter)
                {
                    byte[] Vloc = new byte[(((DHKeyParameters)keyParameter).getParameters().getP().bitLength() + 7) / 8];
                    byte[] Vtmp = BigIntegers.asUnsignedByteArray(((DHPublicKeyParameters)keyParameter).getY());

                    if (Vtmp.length > Vloc.length)
                    {
                        throw new IllegalArgumentException("Senders's public key longer than expected.");
                    }
                    else
                    {
                        System.arraycopy(Vtmp, 0, Vloc, Vloc.length - Vtmp.length, Vtmp.length);
                    }

                    return Vloc;
                }
            });

            // Encrypt the buffer
            try
            {
                engine.init(key, params, kGen);

                return engine.processBlock(in, 0, in.length);
            }
            catch (Exception e)
            {
                throw new BadPaddingException(e.getMessage());
            }
        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            // Decrypt the buffer
            try
            {
                engine.init(key, params, new DHIESPublicKeyParser(((DHKeyParameters)key).getParameters()));

                return engine.processBlock(in, 0, in.length);
            }
            catch (InvalidCipherTextException e)
            {
                throw new BadPaddingException(e.getMessage());
            }
        }
        else
        {
            throw new IllegalStateException("IESCipher not initialised");
        }

    }

    public int engineDoFinal(
        byte[] input,
        int inputOffset,
        int inputLength,
        byte[] output,
        int outputOffset)
        throws ShortBufferException, IllegalBlockSizeException, BadPaddingException
    {

        byte[] buf = engineDoFinal(input, inputOffset, inputLength);
        System.arraycopy(buf, 0, output, outputOffset, buf.length);
        return buf.length;

    }

    /**
     * Classes that inherit from us
     */

    static public class IES
        extends IESCipher
    {
        public IES()
        {
            super(new IESEngine(new DHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest())));
        }
    }

    static public class IESwithDESede
        extends IESCipher
    {
        public IESwithDESede()
        {
            super(new IESEngine(new DHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest()),
                new PaddedBufferedBlockCipher(new DESedeEngine())));
        }
    }

    static public class IESwithAES
        extends IESCipher
    {
        public IESwithAES()
        {
            super(new IESEngine(new DHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest()),
                new PaddedBufferedBlockCipher(new AESEngine())));
        }
    }

    /**
     * Backwards compatibility.
     */
    static public class OldIESwithCipher
        extends IESCipher
    {
        public OldIESwithCipher(BlockCipher baseCipher)
        {
            super(new OldIESEngine(new DHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest()),
                new PaddedBufferedBlockCipher(baseCipher)));
        }
    }

    static public class OldIES
        extends IESCipher
    {
        public OldIES()
        {
            super(new OldIESEngine(new DHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest())));
        }
    }

    static public class OldIESwithDESede
        extends OldIESwithCipher
    {
        public OldIESwithDESede()
        {
            super(new DESedeEngine());
        }
    }

    static public class OldIESwithAES
        extends OldIESwithCipher
    {
        public OldIESwithAES()
        {
            super(new AESEngine());
        }
    }
}

## 内容4
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/ec/IESCipher.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric.ec;

import java.io.ByteArrayOutputStream;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherSpi;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.ShortBufferException;

import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.KeyEncoder;
import org.bouncycastle.crypto.agreement.ECDHBasicAgreement;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.engines.DESedeEngine;
import org.bouncycastle.crypto.engines.IESEngine;
import org.bouncycastle.crypto.engines.OldIESEngine;
import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
import org.bouncycastle.crypto.generators.EphemeralKeyPairGenerator;
import org.bouncycastle.crypto.generators.KDF2BytesGenerator;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECKeyGenerationParameters;
import org.bouncycastle.crypto.params.ECKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.crypto.params.IESWithCipherParameters;
import org.bouncycastle.crypto.params.ParametersWithIV;
import org.bouncycastle.crypto.parsers.ECIESPublicKeyParser;
import org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil;
import org.bouncycastle.jcajce.provider.asymmetric.util.IESUtil;
import org.bouncycastle.jcajce.util.BCJcaJceHelper;
import org.bouncycastle.jcajce.util.JcaJceHelper;
import org.bouncycastle.jce.interfaces.ECKey;
import org.bouncycastle.jce.interfaces.IESKey;
import org.bouncycastle.jce.spec.IESParameterSpec;
import org.bouncycastle.util.Strings;

public class IESCipher
    extends CipherSpi
{
    private final JcaJceHelper helper = new BCJcaJceHelper();

    private int ivLength;
    private IESEngine engine;
    private int state = -1;
    private ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    private AlgorithmParameters engineParam = null;
    private IESParameterSpec engineSpec = null;
    private AsymmetricKeyParameter key;
    private SecureRandom random;
    private boolean dhaesMode = false;
    private AsymmetricKeyParameter otherKeyParameter = null;

    public IESCipher(IESEngine engine)
    {
        this.engine = engine;
        this.ivLength = 0;
    }

    public IESCipher(IESEngine engine, int ivLength)
    {
        this.engine = engine;
        this.ivLength = ivLength;
    }

    public int engineGetBlockSize()
    {
        if (engine.getCipher() != null)
        {
            return engine.getCipher().getBlockSize();
        }
        else
        {
            return 0;
        }
    }

    public int engineGetKeySize(Key key)
    {
        if (key instanceof ECKey)
        {
            return ((ECKey)key).getParameters().getCurve().getFieldSize();
        }
        else
        {
            throw new IllegalArgumentException("not an EC key");
        }
    }

    public byte[] engineGetIV()
    {
        return null;
    }

    public AlgorithmParameters engineGetParameters()
    {
        if (engineParam == null && engineSpec != null)
        {
            try
            {
                engineParam = helper.createAlgorithmParameters("IES");
                engineParam.init(engineSpec);
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.toString());
            }
        }

        return engineParam;
    }

    public void engineSetMode(String mode)
        throws NoSuchAlgorithmException
    {
        String modeName = Strings.toUpperCase(mode);

        if (modeName.equals("NONE"))
        {
            dhaesMode = false;
        }
        else if (modeName.equals("DHAES"))
        {
            dhaesMode = true;
        }
        else
        {
            throw new IllegalArgumentException("can't support mode " + mode);
        }
    }

    public int engineGetOutputSize(int inputLen)
    {
        int len1, len2, len3;

        if (key == null)
        {
            throw new IllegalStateException("cipher not initialised");
        }

        len1 = engine.getMac().getMacSize();

        if (otherKeyParameter == null)
        {
            len2 = 2 * (((ECKeyParameters)key).getParameters().getCurve().getFieldSize() + 7) / 8;
        }
        else
        {
            len2 = 0;
        }

        if (engine.getCipher() == null)
        {
            len3 = inputLen;
        }
        else if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            len3 = engine.getCipher().getOutputSize(inputLen);
        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            len3 = engine.getCipher().getOutputSize(inputLen - len1 - len2);
        }
        else
        {
            throw new IllegalStateException("cipher not initialised");
        }

        if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            return buffer.size() + len1 + 1 + len2 + len3;
        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            return buffer.size() - len1 - len2 + len3;
        }
        else
        {
            throw new IllegalStateException("cipher not initialised");
        }

    }

    public void engineSetPadding(String padding)
        throws NoSuchPaddingException
    {
        String paddingName = Strings.toUpperCase(padding);

        // TDOD: make this meaningful...
        if (paddingName.equals("NOPADDING"))
        {

        }
        else if (paddingName.equals("PKCS5PADDING") || paddingName.equals("PKCS7PADDING"))
        {

        }
        else
        {
            throw new NoSuchPaddingException("padding not available with IESCipher");
        }
    }

    // Initialisation methods

    public void engineInit(
        int opmode,
        Key key,
        AlgorithmParameters params,
        SecureRandom random)
        throws InvalidKeyException, InvalidAlgorithmParameterException
    {
        AlgorithmParameterSpec paramSpec = null;

        if (params != null)
        {
            try
            {
                paramSpec = params.getParameterSpec(IESParameterSpec.class);
            }
            catch (Exception e)
            {
                throw new InvalidAlgorithmParameterException("cannot recognise parameters: " + e.toString());
            }
        }

        engineParam = params;
        engineInit(opmode, key, paramSpec, random);

    }

    public void engineInit(
        int opmode,
        Key key,
        AlgorithmParameterSpec engineSpec,
        SecureRandom random)
        throws InvalidAlgorithmParameterException, InvalidKeyException
    {
        otherKeyParameter = null;

        // Use default parameters (including cipher key size) if none are specified
        if (engineSpec == null)
        {
            this.engineSpec = IESUtil.guessParameterSpec(engine.getCipher());
        }
        else if (engineSpec instanceof IESParameterSpec)
        {
            this.engineSpec = (IESParameterSpec)engineSpec;
        }
        else
        {
            throw new InvalidAlgorithmParameterException("must be passed IES parameters");
        }

        byte[] nonce = this.engineSpec.getNonce();

        if (nonce != null)
        {
            if (ivLength == 0)
            {
                throw new InvalidAlgorithmParameterException("NONCE present in IES Parameters when none required");
            }
            else if (nonce.length != ivLength)
            {
                throw new InvalidAlgorithmParameterException("NONCE in IES Parameters needs to be " + ivLength + " bytes long");
            }
        }

        // Parse the recipient's key
        if (opmode == Cipher.ENCRYPT_MODE || opmode == Cipher.WRAP_MODE)
        {
            if (key instanceof PublicKey)
            {
                this.key = ECUtils.generatePublicKeyParameter((PublicKey)key);
            }
            else if (key instanceof IESKey)
            {
                IESKey ieKey = (IESKey)key;

                this.key = ECUtils.generatePublicKeyParameter(ieKey.getPublic());
                this.otherKeyParameter = ECUtil.generatePrivateKeyParameter(ieKey.getPrivate());
            }
            else
            {
                throw new InvalidKeyException("must be passed recipient's public EC key for encryption");
            }
        }
        else if (opmode == Cipher.DECRYPT_MODE || opmode == Cipher.UNWRAP_MODE)
        {
            if (key instanceof PrivateKey)
            {
                this.key = ECUtil.generatePrivateKeyParameter((PrivateKey)key);
            }
            else if (key instanceof IESKey)
            {
                IESKey ieKey = (IESKey)key;

                this.otherKeyParameter = ECUtils.generatePublicKeyParameter(ieKey.getPublic());
                this.key = ECUtil.generatePrivateKeyParameter(ieKey.getPrivate());
            }
            else
            {
                throw new InvalidKeyException("must be passed recipient's private EC key for decryption");
            }
        }
        else
        {
            throw new InvalidKeyException("must be passed EC key");
        }

        this.random = random;
        this.state = opmode;
        buffer.reset();

    }

    public void engineInit(
        int opmode,
        Key key,
        SecureRandom random)
        throws InvalidKeyException
    {
        try
        {
            engineInit(opmode, key, (AlgorithmParameterSpec)null, random);
        }
        catch (InvalidAlgorithmParameterException e)
        {
            throw new IllegalArgumentException("can't handle supplied parameter spec");
        }

    }

    // Update methods - buffer the input

    public byte[] engineUpdate(
        byte[] input,
        int inputOffset,
        int inputLen)
    {
        buffer.write(input, inputOffset, inputLen);
        return null;
    }

    public int engineUpdate(
        byte[] input,
        int inputOffset,
        int inputLen,
        byte[] output,
        int outputOffset)
    {
        buffer.write(input, inputOffset, inputLen);
        return 0;
    }

    // Finalisation methods

    public byte[] engineDoFinal(
        byte[] input,
        int inputOffset,
        int inputLen)
        throws IllegalBlockSizeException, BadPaddingException
    {
        if (inputLen != 0)
        {
            buffer.write(input, inputOffset, inputLen);
        }

        final byte[] in = buffer.toByteArray();
        buffer.reset();

        // Convert parameters for use in IESEngine
        CipherParameters params = new IESWithCipherParameters(engineSpec.getDerivationV(),
            engineSpec.getEncodingV(),
            engineSpec.getMacKeySize(),
            engineSpec.getCipherKeySize());

        if (engineSpec.getNonce() != null)
        {
            params = new ParametersWithIV(params, engineSpec.getNonce());
        }

        final ECDomainParameters ecParams = ((ECKeyParameters)key).getParameters();

        final byte[] V;

        if (otherKeyParameter != null)
        {
            try
            {
                if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
                {
                    engine.init(true, otherKeyParameter, key, params);
                }
                else
                {
                    engine.init(false, key, otherKeyParameter, params);
                }
                return engine.processBlock(in, 0, in.length);
            }
            catch (Exception e)
            {
                throw new BadPaddingException(e.getMessage());
            }
        }

        if (state == Cipher.ENCRYPT_MODE || state == Cipher.WRAP_MODE)
        {
            // Generate the ephemeral key pair
            ECKeyPairGenerator gen = new ECKeyPairGenerator();
            gen.init(new ECKeyGenerationParameters(ecParams, random));

            final boolean usePointCompression = engineSpec.getPointCompression();
            EphemeralKeyPairGenerator kGen = new EphemeralKeyPairGenerator(gen, new KeyEncoder()
            {
                public byte[] getEncoded(AsymmetricKeyParameter keyParameter)
                {
                    return ((ECPublicKeyParameters)keyParameter).getQ().getEncoded(usePointCompression);
                }
            });

            // Encrypt the buffer
            try
            {
                engine.init(key, params, kGen);

                return engine.processBlock(in, 0, in.length);
            }
            catch (Exception e)
            {
                throw new BadPaddingException(e.getMessage());
            }

        }
        else if (state == Cipher.DECRYPT_MODE || state == Cipher.UNWRAP_MODE)
        {
            // Decrypt the buffer
            try
            {
                engine.init(key, params, new ECIESPublicKeyParser(ecParams));

                return engine.processBlock(in, 0, in.length);
            }
            catch (InvalidCipherTextException e)
            {
                throw new BadPaddingException(e.getMessage());
            }
        }
        else
        {
            throw new IllegalStateException("cipher not initialised");
        }

    }

    public int engineDoFinal(
        byte[] input,
        int inputOffset,
        int inputLength,
        byte[] output,
        int outputOffset)
        throws ShortBufferException, IllegalBlockSizeException, BadPaddingException
    {

        byte[] buf = engineDoFinal(input, inputOffset, inputLength);
        System.arraycopy(buf, 0, output, outputOffset, buf.length);
        return buf.length;
    }

    /**
     * Classes that inherit from us
     */

    static public class ECIES
        extends IESCipher
    {
        public ECIES()
        {
            super(new IESEngine(new ECDHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest())));
        }
    }

    static public class ECIESwithCipher
        extends IESCipher
    {
        public ECIESwithCipher(BlockCipher cipher)
        {
            super(new IESEngine(new ECDHBasicAgreement(),
                            new KDF2BytesGenerator(new SHA1Digest()),
                            new HMac(new SHA1Digest()),
                            new PaddedBufferedBlockCipher(cipher)));
        }

        public ECIESwithCipher(BlockCipher cipher, int ivLength)
        {
            super(new IESEngine(new ECDHBasicAgreement(),
                            new KDF2BytesGenerator(new SHA1Digest()),
                            new HMac(new SHA1Digest()),
                            new PaddedBufferedBlockCipher(cipher)), ivLength);
        }
    }

    static public class ECIESwithDESede
        extends ECIESwithCipher
    {
        public ECIESwithDESede()
        {
            super(new DESedeEngine());
        }
    }

    static public class ECIESwithAES
        extends ECIESwithCipher
    {
        public ECIESwithAES()
        {
            super(new AESEngine());
        }
    }

    static public class ECIESwithDESedeCBC
        extends ECIESwithCipher
    {
        public ECIESwithDESedeCBC()
        {
            super(new CBCBlockCipher(new DESedeEngine()), 8);
        }
    }

    static public class ECIESwithAESCBC
        extends ECIESwithCipher
    {
        public ECIESwithAESCBC()
        {
            super(new CBCBlockCipher(new AESEngine()), 16);
        }
    }

    /**
     * Backwards compatibility
     */
    static public class OldECIES
        extends IESCipher
    {
        public OldECIES()
        {
            super(new OldIESEngine(new ECDHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest())));
        }
    }

    static public class OldECIESwithCipher
        extends IESCipher
    {
        public OldECIESwithCipher(BlockCipher baseCipher)
        {
            super(new OldIESEngine(new ECDHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest()),
                new PaddedBufferedBlockCipher(baseCipher)));
        }

        public OldECIESwithCipher(BlockCipher baseCipher, int ivLength)
        {
            super(new OldIESEngine(new ECDHBasicAgreement(),
                new KDF2BytesGenerator(new SHA1Digest()),
                new HMac(new SHA1Digest()),
                new PaddedBufferedBlockCipher(baseCipher)), ivLength);
        }
    }

    static public class OldECIESwithDESede
        extends OldECIESwithCipher
    {
        public OldECIESwithDESede()
        {
            super(new DESedeEngine());
        }
    }

    static public class OldECIESwithAES
        extends OldECIESwithCipher
    {
        public OldECIESwithAES()
        {
            super(new AESEngine());
        }
    }

    static public class OldECIESwithDESedeCBC
        extends OldECIESwithCipher
    {
        public OldECIESwithDESedeCBC()
        {
            super(new CBCBlockCipher(new DESedeEngine()), 8);
        }
    }

    static public class OldECIESwithAESCBC
        extends OldECIESwithCipher
    {
        public OldECIESwithAESCBC()
        {
            super(new CBCBlockCipher(new AESEngine()), 16);
        }
    }
}

## 内容5
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/ies/AlgorithmParametersSpi.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric.ies;

import java.io.IOException;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.InvalidParameterSpecException;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Encoding;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.jce.spec.IESParameterSpec;

public class AlgorithmParametersSpi
    extends java.security.AlgorithmParametersSpi
{
    protected boolean isASN1FormatString(String format)
    {
        return format == null || format.equals("ASN.1");
    }

    protected AlgorithmParameterSpec engineGetParameterSpec(
        Class paramSpec)
        throws InvalidParameterSpecException
    {
        if (paramSpec == null)
        {
            throw new NullPointerException("argument to getParameterSpec must not be null");
        }

        return localEngineGetParameterSpec(paramSpec);
    }

    IESParameterSpec currentSpec;

    /**
     * in the absence of a standard way of doing it this will do for
     * now...
     */
    protected byte[] engineGetEncoded()
    {
        try
        {
            ASN1EncodableVector v = new ASN1EncodableVector();

            if (currentSpec.getDerivationV() != null)
            {
                v.add(new DERTaggedObject(false, 0, new DEROctetString(currentSpec.getDerivationV())));
            }
            if (currentSpec.getEncodingV() != null)
            {
                v.add(new DERTaggedObject(false, 1, new DEROctetString(currentSpec.getEncodingV())));
            }
            v.add(new ASN1Integer(currentSpec.getMacKeySize()));

            return new DERSequence(v).getEncoded(ASN1Encoding.DER);
        }
        catch (IOException e)
        {
            throw new RuntimeException("Error encoding IESParameters");
        }
    }

    protected byte[] engineGetEncoded(
        String format)
    {
        if (isASN1FormatString(format) || format.equalsIgnoreCase("X.509"))
        {
            return engineGetEncoded();
        }

        return null;
    }

    protected AlgorithmParameterSpec localEngineGetParameterSpec(
        Class paramSpec)
        throws InvalidParameterSpecException
    {
        if (paramSpec == IESParameterSpec.class || paramSpec == AlgorithmParameterSpec.class)
        {
            return currentSpec;
        }

        throw new InvalidParameterSpecException("unknown parameter spec passed to ElGamal parameters object.");
    }

    protected void engineInit(
        AlgorithmParameterSpec paramSpec)
        throws InvalidParameterSpecException
    {
        if (!(paramSpec instanceof IESParameterSpec))
        {
            throw new InvalidParameterSpecException("IESParameterSpec required to initialise a IES algorithm parameters object");
        }

        this.currentSpec = (IESParameterSpec)paramSpec;
    }

    protected void engineInit(
        byte[] params)
        throws IOException
    {
        try
        {
            ASN1Sequence s = (ASN1Sequence)ASN1Primitive.fromByteArray(params);

            if (s.size() == 1)
            {
                this.currentSpec = new IESParameterSpec(null, null, ASN1Integer.getInstance(s.getObjectAt(0)).getValue().intValue());
            }
            else if (s.size() == 2)
            {
                ASN1TaggedObject tagged = ASN1TaggedObject.getInstance(s.getObjectAt(0));

                if (tagged.getTagNo() == 0)
                {
                    this.currentSpec = new IESParameterSpec(ASN1OctetString.getInstance(tagged, false).getOctets(), null, ASN1Integer.getInstance(s.getObjectAt(1)).getValue().intValue());
                }
                else
                {
                    this.currentSpec = new IESParameterSpec(null, ASN1OctetString.getInstance(tagged, false).getOctets(), ASN1Integer.getInstance(s.getObjectAt(1)).getValue().intValue());
                }
            }
            else
            {
                ASN1TaggedObject tagged1 = ASN1TaggedObject.getInstance(s.getObjectAt(0));
                ASN1TaggedObject tagged2 = ASN1TaggedObject.getInstance(s.getObjectAt(1));

                this.currentSpec = new IESParameterSpec(ASN1OctetString.getInstance(tagged1, false).getOctets(), ASN1OctetString.getInstance(tagged2, false).getOctets(), ASN1Integer.getInstance(s.getObjectAt(2)).getValue().intValue());
            }
        }
        catch (ClassCastException e)
        {
            throw new IOException("Not a valid IES Parameter encoding.");
        }
        catch (ArrayIndexOutOfBoundsException e)
        {
            throw new IOException("Not a valid IES Parameter encoding.");
        }
    }

    protected void engineInit(
        byte[] params,
        String format)
        throws IOException
    {
        if (isASN1FormatString(format) || format.equalsIgnoreCase("X.509"))
        {
            engineInit(params);
        }
        else
        {
            throw new IOException("Unknown parameter format " + format);
        }
    }

    protected String engineToString()
    {
        return "IES Parameters";
    }
}

## 内容6
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/util/IESUtil.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric.util;

import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.jce.spec.IESParameterSpec;

public class IESUtil
{
    public static IESParameterSpec guessParameterSpec(BufferedBlockCipher iesBlockCipher)
    {
        if (iesBlockCipher == null)
        {
            return new IESParameterSpec(null, null, 128);
        }
        else
        {
            BlockCipher underlyingCipher = iesBlockCipher.getUnderlyingCipher();

            if (underlyingCipher.getAlgorithmName().equals("DES") ||
                underlyingCipher.getAlgorithmName().equals("RC2") ||
                underlyingCipher.getAlgorithmName().equals("RC5-32") ||
                underlyingCipher.getAlgorithmName().equals("RC5-64"))
            {
                return new IESParameterSpec(null, null, 64, 64);
            }
            else if (underlyingCipher.getAlgorithmName().equals("SKIPJACK"))
            {
                return new IESParameterSpec(null, null, 80, 80);
            }
            else if (underlyingCipher.getAlgorithmName().equals("GOST28147"))
            {
                return new IESParameterSpec(null, null, 256, 256);
            }

            return new IESParameterSpec(null, null, 128, 128);
        }
    }
}

## 内容7
### 文件路径：
prov/src/main/java/org/bouncycastle/jce/spec/IESParameterSpec.java
### 代码内容：
package org.bouncycastle.jce.spec;

import java.security.spec.AlgorithmParameterSpec;

import org.bouncycastle.util.Arrays;

/**
 * Parameter spec for an integrated encryptor, as in IEEE P1363a
 */
public class IESParameterSpec
    implements AlgorithmParameterSpec
{
    private byte[] derivation;
    private byte[] encoding;
    private int macKeySize;
    private int cipherKeySize;
    private byte[] nonce;
    private boolean usePointCompression;

    /**
     * Set the IES engine parameters.
     *
     * @param derivation the optional derivation vector for the KDF.
     * @param encoding   the optional encoding vector for the KDF.
     * @param macKeySize the key size (in bits) for the MAC.
     */
    public IESParameterSpec(
        byte[] derivation,
        byte[] encoding,
        int macKeySize)
    {
        this(derivation, encoding, macKeySize, -1, null, false);
    }

    /**
     * Set the IES engine parameters.
     *
     * @param derivation    the optional derivation vector for the KDF.
     * @param encoding      the optional encoding vector for the KDF.
     * @param macKeySize    the key size (in bits) for the MAC.
     * @param cipherKeySize the key size (in bits) for the block cipher.
     */
    public IESParameterSpec(
        byte[] derivation,
        byte[] encoding,
        int macKeySize,
        int cipherKeySize)
    {
        this(derivation, encoding, macKeySize, cipherKeySize, null, false);
    }

    /**
     * Set the IES engine parameters.
     *
     * @param derivation    the optional derivation vector for the KDF.
     * @param encoding      the optional encoding vector for the KDF.
     * @param macKeySize    the key size (in bits) for the MAC.
     * @param cipherKeySize the key size (in bits) for the block cipher.
     * @param nonce         an IV to use initialising the block cipher.
     */
    public IESParameterSpec(
        byte[] derivation,
        byte[] encoding,
        int macKeySize,
        int cipherKeySize,
        byte[] nonce)
    {
        this(derivation, encoding, macKeySize, cipherKeySize, nonce, false);
    }

    /**
     * Set the IES engine parameters.
     *
     * @param derivation    the optional derivation vector for the KDF.
     * @param encoding      the optional encoding vector for the KDF.
     * @param macKeySize    the key size (in bits) for the MAC.
     * @param cipherKeySize the key size (in bits) for the block cipher.
     * @param nonce         an IV to use initialising the block cipher.
     * @param usePointCompression whether to use EC point compression or not (false by default)
     */
    public IESParameterSpec(
        byte[] derivation,
        byte[] encoding,
        int macKeySize,
        int cipherKeySize,
        byte[] nonce,
        boolean usePointCompression)
    {
        if (derivation != null)
        {
            this.derivation = new byte[derivation.length];
            System.arraycopy(derivation, 0, this.derivation, 0, derivation.length);
        }
        else
        {
            this.derivation = null;
        }

        if (encoding != null)
        {
            this.encoding = new byte[encoding.length];
            System.arraycopy(encoding, 0, this.encoding, 0, encoding.length);
        }
        else
        {
            this.encoding = null;
        }

        this.macKeySize = macKeySize;
        this.cipherKeySize = cipherKeySize;
        this.nonce = Arrays.clone(nonce);
        this.usePointCompression = usePointCompression;
    }

    /**
     * return the derivation vector.
     */
    public byte[] getDerivationV()
    {
        return Arrays.clone(derivation);
    }

    /**
     * return the encoding vector.
     */
    public byte[] getEncodingV()
    {
        return Arrays.clone(encoding);
    }

    /**
     * return the key size in bits for the MAC used with the message
     */
    public int getMacKeySize()
    {
        return macKeySize;
    }

    /**
     * return the key size in bits for the block cipher used with the message
     */
    public int getCipherKeySize()
    {
        return cipherKeySize;
    }

    /**
     * Return the nonce (IV) value to be associated with message.
     *
     * @return block cipher IV for message.
     */
    public byte[] getNonce()
    {
        return Arrays.clone(nonce);
    }

    /**
     * Set the 'point compression' flag.
     */
    public void setPointCompression(boolean usePointCompression)
    {
        this.usePointCompression = usePointCompression;
    }

    /**
     * Return the 'point compression' flag.
     *
     * @return the point compression flag
     */
    public boolean getPointCompression()
    {
        return usePointCompression;
    }
}

Output:
【漏洞类型】非加密模式的加密算法支持
【严重性】High
【漏洞摘要】原始代码中支持了非CBC模式的IES和ECIES加密算法，这可能导致不安全的加密实践。具体表现为，代码中注册了许多基于非CBC模式的加密算法（如AES、DESede等），这些算法在某些情况下可能不提供足够的加密强度。例如，在DH.java文件中，`Cipher.IESwithAES`、`Cipher.IESWITHAES`和`Cipher.IESWITHDESEDE`等算法在配置时没有要求使用CBC模式，这可能导致未加密的数据块传输，从而降低安全性。根本原因是缺乏对加密模式的严格检查和强制要求，允许使用可能不安全的加密模式。
【关键代码模式】与此漏洞相关的关键代码模式、函数或关键词包括`provider.addAlgorithm("Cipher.IESwithAES", ...)`、`provider.addAlgorithm("Cipher.IESWITHAES", ...)`、`provider.addAlgorithm("Cipher.ECIESwithAES", ...)`等，以及在`IESCipher.java`中对非CBC模式的CipherParameters的处理。
【修复方法说明】修复方法通过移除对非CBC模式加密算法的支持，强制要求使用CBC模式，从而提高加密强度和安全性。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/KeyPairGeneratorSpi.java
### 代码内容：
package org.bouncycastle.jcajce.provider.asymmetric.dsa;

import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidParameterException;
import java.security.KeyPair;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.DSAParameterSpec;

import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.generators.DSAKeyPairGenerator;
import org.bouncycastle.crypto.generators.DSAParametersGenerator;
import org.bouncycastle.crypto.params.DSAKeyGenerationParameters;
import org.bouncycastle.crypto.params.DSAParameters;
import org.bouncycastle.crypto.params.DSAPrivateKeyParameters;
import org.bouncycastle.crypto.params.DSAPublicKeyParameters;

public class KeyPairGeneratorSpi
    extends java.security.KeyPairGenerator
{
    DSAKeyGenerationParameters param;
    DSAKeyPairGenerator engine = new DSAKeyPairGenerator();
    int strength = 1024;
    int certainty = 20;
    SecureRandom random = new SecureRandom();
    boolean initialised = false;

    public KeyPairGeneratorSpi()
    {
        super("DSA");
    }

    public void initialize(
        int strength,
        SecureRandom random)
    {
        if (strength < 512 || strength > 4096 || ((strength < 1024) && strength % 64 != 0) || (strength >= 1024 && strength % 1024 != 0))
        {
            throw new InvalidParameterException("strength must be from 512 - 4096 and a multiple of 1024 above 1024");
        }

        this.strength = strength;
        this.random = random;
    }

    public void initialize(
        AlgorithmParameterSpec params,
        SecureRandom random)
        throws InvalidAlgorithmParameterException
    {
        if (!(params instanceof DSAParameterSpec))
        {
            throw new InvalidAlgorithmParameterException("parameter object not a DSAParameterSpec");
        }
        DSAParameterSpec dsaParams = (DSAParameterSpec)params;

        param = new DSAKeyGenerationParameters(random, new DSAParameters(dsaParams.getP(), dsaParams.getQ(), dsaParams.getG()));

        engine.init(param);
        initialised = true;
    }

    public KeyPair generateKeyPair()
    {
        if (!initialised)
        {
            DSAParametersGenerator pGen = new DSAParametersGenerator();

            pGen.init(strength, certainty, random);
            param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
            engine.init(param);
            initialised = true;
        }

        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
        DSAPublicKeyParameters pub = (DSAPublicKeyParameters)pair.getPublic();
        DSAPrivateKeyParameters priv = (DSAPrivateKeyParameters)pair.getPrivate();

        return new KeyPair(new BCDSAPublicKey(pub), new BCDSAPrivateKey(priv));
    }
}

Output:
【漏洞类型】硬编码算法参数
【严重性】Medium
【漏洞摘要】原始代码中，如果用户没有提供特定的AlgorithmParameterSpec（DSAParameterSpec），则会使用默认的算法参数（strength=1024, certainty=20）。这种硬编码的方式可能导致生成的密钥对不满足最新的安全标准，尤其是当DSA算法的标准从186-2升级到186-4时，硬编码参数可能不再安全。此外，如果用户提供了参数，但参数的处理方式不当（例如，没有检查参数的合法性），也可能导致生成不安全的密钥对。
【关键代码模式】
- `if (!initialised)`
- `DSAParametersGenerator pGen = new DSAParametersGenerator();`
- `pGen.init(strength, certainty, random);`
- `param = new DSAKeyGenerationParameters(random, pGen.generateParameters());`
【修复方法说明】修复方法通过引入一个Hashtable来缓存已生成的DSAKeyGenerationParameters，以避免重复计算相同的参数。同时，根据不同的密钥长度（strength）选择不同的q的大小，并为大于1024位的密钥使用SHA256Digest。这样可以确保生成的密钥对遵循最新的安全标准。