Example usage for org.bouncycastle.crypto.signers PSSSigner PSSSigner

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.signers PSSSigner PSSSigner.

Prototype

public PSSSigner(AsymmetricBlockCipher cipher, Digest contentDigest, Digest mgfDigest, byte[] salt,
            byte trailer) 

Source Link

Usage

From source file:org.xipki.commons.security.util.SignerUtil.java

License:Open Source License

public static PSSSigner createPSSRSASigner(final AlgorithmIdentifier sigAlgId,
        final AsymmetricBlockCipher cipher) throws XiSecurityException {
    ParamUtil.requireNonNull("sigAlgId", sigAlgId);
    if (!PKCSObjectIdentifiers.id_RSASSA_PSS.equals(sigAlgId.getAlgorithm())) {
        throw new XiSecurityException("signature algorithm " + sigAlgId.getAlgorithm() + " is not allowed");
    }/*from ww w .  jav  a 2  s .com*/

    AlgorithmIdentifier digAlgId;
    try {
        digAlgId = AlgorithmUtil.extractDigesetAlgId(sigAlgId);
    } catch (NoSuchAlgorithmException ex) {
        throw new XiSecurityException(ex.getMessage(), ex);
    }

    RSASSAPSSparams param = RSASSAPSSparams.getInstance(sigAlgId.getParameters());

    AlgorithmIdentifier mfgDigAlgId = AlgorithmIdentifier
            .getInstance(param.getMaskGenAlgorithm().getParameters());

    Digest dig = getDigest(digAlgId);
    Digest mfgDig = getDigest(mfgDigAlgId);

    int saltSize = param.getSaltLength().intValue();
    int trailerField = param.getTrailerField().intValue();
    AsymmetricBlockCipher tmpCipher = (cipher == null) ? new RSABlindedEngine() : cipher;

    return new PSSSigner(tmpCipher, dig, mfgDig, saltSize, getTrailer(trailerField));
}

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From source file:org.xipki.security.SignerUtil.java

License:Open Source License

static public PSSSigner createPSSRSASigner(final AlgorithmIdentifier sigAlgId, AsymmetricBlockCipher cipher)
        throws OperatorCreationException {
    if (PKCSObjectIdentifiers.id_RSASSA_PSS.equals(sigAlgId.getAlgorithm()) == false) {
        throw new OperatorCreationException(
                "signature algorithm " + sigAlgId.getAlgorithm() + " is not allowed");
    }/*from w  w w  .ja va2  s .  com*/

    BcDigestProvider digestProvider = BcDefaultDigestProvider.INSTANCE;
    AlgorithmIdentifier digAlgId;
    try {
        digAlgId = AlgorithmUtil.extractDigesetAlgorithmIdentifier(sigAlgId);
    } catch (NoSuchAlgorithmException e) {
        throw new OperatorCreationException(e.getMessage(), e);
    }
    Digest dig = digestProvider.get(digAlgId);
    if (cipher == null) {
        cipher = new RSABlindedEngine();
    }

    RSASSAPSSparams param = RSASSAPSSparams.getInstance(sigAlgId.getParameters());

    AlgorithmIdentifier mfgDigAlgId = AlgorithmIdentifier
            .getInstance(param.getMaskGenAlgorithm().getParameters());
    Digest mfgDig = digestProvider.get(mfgDigAlgId);

    int saltSize = param.getSaltLength().intValue();
    int trailerField = param.getTrailerField().intValue();

    return new PSSSigner(cipher, dig, mfgDig, saltSize, getTrailer(trailerField));
}

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