org.bouncycastle.tls.crypto.impl.jcajce.JcaDefaultTlsCredentialedSigner Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bctls-fips Show documentation

The Bouncy Castle Java APIs for the TLS, including a JSSE provider. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

There is a newer version: 2.0.19

Show newest version

package org.bouncycastle.tls.crypto.impl.jcajce;

import java.security.PrivateKey;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.RSAPrivateKey;

import org.bouncycastle.tls.Certificate;
import org.bouncycastle.tls.DefaultTlsCredentialedSigner;
import org.bouncycastle.tls.SignatureAlgorithm;
import org.bouncycastle.tls.SignatureAndHashAlgorithm;
import org.bouncycastle.tls.crypto.TlsCryptoParameters;
import org.bouncycastle.tls.crypto.TlsSigner;

/**
 * Credentialed class for generating signatures based on the use of primitives from the JCA.
 */
public class JcaDefaultTlsCredentialedSigner
    extends DefaultTlsCredentialedSigner
{
    private static TlsSigner makeSigner(JcaTlsCrypto crypto, PrivateKey privateKey,
        SignatureAndHashAlgorithm signatureAndHashAlgorithm)
    {
        String algorithm = privateKey.getAlgorithm();

        TlsSigner signer;
        if (privateKey instanceof RSAPrivateKey || "RSA".equals(algorithm))
        {
            if (signatureAndHashAlgorithm != null)
            {
                short signatureAlgorithm = signatureAndHashAlgorithm.getSignature();
                switch (signatureAlgorithm)
                {
                case SignatureAlgorithm.rsa_pss_pss_sha256:
                case SignatureAlgorithm.rsa_pss_pss_sha384:
                case SignatureAlgorithm.rsa_pss_pss_sha512:
                case SignatureAlgorithm.rsa_pss_rsae_sha256:
                case SignatureAlgorithm.rsa_pss_rsae_sha384:
                case SignatureAlgorithm.rsa_pss_rsae_sha512:
                    return new JcaTlsRSAPSSSigner(crypto, privateKey, signatureAlgorithm);
                }
            }

            signer = new JcaTlsRSASigner(crypto, privateKey);
        }
        else if (privateKey instanceof DSAPrivateKey || "DSA".equals(algorithm))
        {
            signer = new JcaTlsDSASigner(crypto, privateKey);
        }
        else if (ECUtil.isECPrivateKey(privateKey))
        {
            signer = new JcaTlsECDSASigner(crypto, privateKey);
        }
        else if ("Ed25519".equals(algorithm))
        {
            // TODO[RFC 8422] Extract public key from certificate?
            signer = new JcaTlsEd25519Signer(crypto, privateKey);
        }
        else if ("Ed448".equals(algorithm))
        {
            // TODO[RFC 8422] Extract public key from certificate?
            signer = new JcaTlsEd448Signer(crypto, privateKey);
        }
        else
        {
            throw new IllegalArgumentException("'privateKey' type not supported: " + privateKey.getClass().getName());
        }

        return signer;
    }

    public JcaDefaultTlsCredentialedSigner(TlsCryptoParameters cryptoParams, JcaTlsCrypto crypto, PrivateKey privateKey,
        Certificate certificate, SignatureAndHashAlgorithm signatureAndHashAlgorithm)
    {
        super(cryptoParams, makeSigner(crypto, privateKey, signatureAndHashAlgorithm), certificate,
            signatureAndHashAlgorithm);
    }
}