org.bouncycastle.jcajce.provider.asymmetric.rsa.ISOSignatureSpi Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of bouncycastle Show documentation
The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
There is a newer version: 1.2.2.1-jre17
Show newest version
package org.bouncycastle.jcajce.provider.asymmetric.rsa;

import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SignatureException;
import java.security.SignatureSpi;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.AlgorithmParameterSpec;

import org.bouncycastle.crypto.AsymmetricBlockCipher;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.RIPEMD160Digest;
import org.bouncycastle.crypto.digests.WhirlpoolDigest;
import org.bouncycastle.crypto.engines.RSABlindedEngine;
import org.bouncycastle.crypto.signers.ISO9796d2Signer;
import org.bouncycastle.crypto.util.DigestFactory;

public class ISOSignatureSpi
    extends SignatureSpi
{
    private ISO9796d2Signer signer;

    protected ISOSignatureSpi(
        Digest digest,
        AsymmetricBlockCipher cipher)
    {
        signer = new ISO9796d2Signer(cipher, digest, true);
    }

    protected void engineInitVerify(
        PublicKey publicKey)
        throws InvalidKeyException
    {
        CipherParameters param = RSAUtil.generatePublicKeyParameter((RSAPublicKey)publicKey);

        signer.init(false, param);
    }

    protected void engineInitSign(
        PrivateKey privateKey)
        throws InvalidKeyException
    {
        CipherParameters param = RSAUtil.generatePrivateKeyParameter((RSAPrivateKey)privateKey);

        signer.init(true, param);
    }

    protected void engineUpdate(
        byte    b)
        throws SignatureException
    {
        signer.update(b);
    }

    protected void engineUpdate(
        byte[]  b,
        int     off,
        int     len) 
        throws SignatureException
    {
        signer.update(b, off, len);
    }

    protected byte[] engineSign()
        throws SignatureException
    {
        try
        {
            byte[]  sig = signer.generateSignature();

            return sig;
        }
        catch (Exception e)
        {
            throw new SignatureException(e.toString());
        }
    }

    protected boolean engineVerify(
        byte[]  sigBytes) 
        throws SignatureException
    {
        boolean yes = signer.verifySignature(sigBytes);

        return yes;
    }

    protected void engineSetParameter(
        AlgorithmParameterSpec params)
    {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    /**
     * @deprecated replaced with engineSetParameter(java.security.spec.AlgorithmParameterSpec)
     */
    protected void engineSetParameter(
        String param,
        Object value)
    {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    /**
     * @deprecated
     */
    protected Object engineGetParameter(
        String param)
    {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    static public class SHA1WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA1WithRSAEncryption()
        {
            super(DigestFactory.createSHA1(), new RSABlindedEngine());
        }
    }

    static public class MD5WithRSAEncryption
        extends ISOSignatureSpi
    {
        public MD5WithRSAEncryption()
        {
            super(DigestFactory.createMD5(), new RSABlindedEngine());
        }
    }

    static public class RIPEMD160WithRSAEncryption
        extends ISOSignatureSpi
    {
        public RIPEMD160WithRSAEncryption()
        {
            super(new RIPEMD160Digest(), new RSABlindedEngine());
        }
    }

    static public class SHA224WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA224WithRSAEncryption()
        {
            super(DigestFactory.createSHA224(), new RSABlindedEngine());
        }
    }

    static public class SHA256WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA256WithRSAEncryption()
        {
            super(DigestFactory.createSHA256(), new RSABlindedEngine());
        }
    }

    static public class SHA384WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA384WithRSAEncryption()
        {
            super(DigestFactory.createSHA384(), new RSABlindedEngine());
        }
    }

    static public class SHA512WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA512WithRSAEncryption()
        {
            super(DigestFactory.createSHA512(), new RSABlindedEngine());
        }
    }

    static public class SHA512_224WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA512_224WithRSAEncryption()
        {
            super(DigestFactory.createSHA512_224(), new RSABlindedEngine());
        }
    }

    static public class SHA512_256WithRSAEncryption
        extends ISOSignatureSpi
    {
        public SHA512_256WithRSAEncryption()
        {
            super(DigestFactory.createSHA512_256(), new RSABlindedEngine());
        }
    }

    static public class WhirlpoolWithRSAEncryption
        extends ISOSignatureSpi
    {
        public WhirlpoolWithRSAEncryption()
        {
            super(new WhirlpoolDigest(), new RSABlindedEngine());
        }
    }
}