Examples with PKCS12MacCalculatorBuilder com.github.zhenwei.pkix.pkcs.PKCS12MacCalculatorBuilder used on opensource projects

Example 1 with PKCS12MacCalculatorBuilder

use of com.github.zhenwei.pkix.pkcs.PKCS12MacCalculatorBuilder in project LinLong-Java by zhenwei1108.

the class JcePKCS12MacCalculatorBuilderProvider method get.

public PKCS12MacCalculatorBuilder get(final AlgorithmIdentifier algorithmIdentifier) {
    return new PKCS12MacCalculatorBuilder() {

        public MacCalculator build(final char[] password) throws OperatorCreationException {
            final PKCS12PBEParams pbeParams = PKCS12PBEParams.getInstance(algorithmIdentifier.getParameters());
            try {
                final ASN1ObjectIdentifier algorithm = algorithmIdentifier.getAlgorithm();
                final Mac mac = helper.createMac(algorithm.getId());
                PBEParameterSpec defParams = new PBEParameterSpec(pbeParams.getIV(), pbeParams.getIterations().intValue());
                final SecretKey key = new PKCS12Key(password);
                mac.init(key, defParams);
                return new MacCalculator() {

                    public AlgorithmIdentifier getAlgorithmIdentifier() {
                        return new AlgorithmIdentifier(algorithm, pbeParams);
                    }

                    public OutputStream getOutputStream() {
                        return new MacOutputStream(mac);
                    }

                    public byte[] getMac() {
                        return mac.doFinal();
                    }

                    public GenericKey getKey() {
                        return new GenericKey(getAlgorithmIdentifier(), key.getEncoded());
                    }
                };
            } catch (Exception e) {
                throw new OperatorCreationException("unable to create MAC calculator: " + e.getMessage(), e);
            }
        }

        public AlgorithmIdentifier getDigestAlgorithmIdentifier() {
            return new AlgorithmIdentifier(algorithmIdentifier.getAlgorithm(), DERNull.INSTANCE);
        }
    };
}